{"id":2823,"date":"2023-10-19T14:22:45","date_gmt":"2023-10-19T06:22:45","guid":{"rendered":"https:\/\/uniasen.com\/?page_id=2823"},"modified":"2024-09-04T08:49:31","modified_gmt":"2024-09-04T00:49:31","slug":"astm-a691","status":"publish","type":"page","link":"https:\/\/uniasen.com\/it\/standard\/astm-a691\/","title":{"rendered":"ASTM A691"},"content":{"rendered":"<div id=\"page-header-1727670068\" class=\"page-header-wrapper\">\n  <div class=\"page-title dark featured-title\">\n\n        <div class=\"page-title-bg\">\n      <div class=\"title-bg fill bg-fill\"\n        data-parallax-container=\".page-title\"\n        data-parallax-background\n data-parallax=\"-\">\n      <\/div>\n      <div class=\"title-overlay fill\"><\/div>\n    <\/div>\n    \n    <div class=\"page-title-inner container align-center flex-row medium-flex-wrap\" >\n              <div class=\"title-wrapper flex-col text-left medium-text-center\">\n          <h1 class=\"entry-title mb-0\">\n            ASTM A691          <\/h1>\n        <\/div>\n                    <div class=\"title-content flex-col flex-right text-right medium-text-center\">\n        <div class=\"title-breadcrumbs pb-half pt-half\"><\/div>      <\/div>\n    <\/div>\n\n     \n<style>\n#page-header-1727670068 .title-bg {\n  background-image: url(https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-carbon-steel-pipe-manufacturer-header.webp);\n}\n<\/style>\n  <\/div>\n    <\/div>\n  \n\t<div id=\"gap-1319389165\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1319389165 {\n  padding-top: 4%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t<section class=\"section\" id=\"section_1478055183\">\n\t\t<div class=\"section-bg fill\" >\n\t\t\t\t\t\t\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n<div class=\"row align-middle align-center\"  id=\"row-1670038015\">\n\n\t<div id=\"col-351005728\" class=\"col medium-11 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_474498017\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner image-cover dark\" style=\"padding-top:75%;\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/uniasen.com\/wp-content\/uploads\/2024\/08\/china_lsaw_pipe_supplier_line_pipe_factory.webp\" class=\"attachment-original size-original\" alt=\"fornitore di tubi lsaw in Cina fabbrica di tubi di linea\" srcset=\"https:\/\/uniasen.com\/wp-content\/uploads\/2024\/08\/china_lsaw_pipe_supplier_line_pipe_factory.webp 1000w, https:\/\/uniasen.com\/wp-content\/uploads\/2024\/08\/china_lsaw_pipe_supplier_line_pipe_factory-300x225.webp 300w, https:\/\/uniasen.com\/wp-content\/uploads\/2024\/08\/china_lsaw_pipe_supplier_line_pipe_factory-768x576.webp 768w, https:\/\/uniasen.com\/wp-content\/uploads\/2024\/08\/china_lsaw_pipe_supplier_line_pipe_factory-16x12.webp 16w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_474498017 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-999766706\" class=\"col medium-12 small-12 large-6 medium-col-first\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<h2>Tubo ASTM A691<\/h2>\n<p><strong>Panoramica dello standard:\u00a0<\/strong><\/p>\n<p>L'ASTM A691 \u00e8 uno standard per i tubi saldati elettricamente in acciaio al carbonio e legato. \u00c8 destinato all'uso in ambienti ad alta temperatura e ad alta pressione. Questi tubi sono solitamente realizzati mediante arricciatura e saldatura di pi\u00f9 lastre di acciaio. Hanno una buona forza e resistenza alla corrosione.<\/p>\n<p><strong>Materiale principale:<\/strong><\/p>\n<p>Materiali in acciaio al carbonio e in acciaio legato. I materiali comuni in acciaio legato includono 1,25Cr-0,5Mo, 2,25Cr-1Mo, ecc.<\/p>\n<p><strong>Ambito di applicazione:<\/strong><\/p>\n<p>I tubi ASTM A691 sono ampiamente utilizzati nell'industria petrolifera, del gas, dell'energia e chimica. Sono destinati ad ambienti ad alta temperatura e alta pressione, come caldaie e sistemi di tubazioni.<\/p>\n<a href=\"#is-pop\" class=\"button primary\"  style=\"border-radius:10px;\">\n\t\t<span>Richiesta di preventivo<\/span>\n\t<\/a>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n\t\t<\/div>\n\n\t\t\n<style>\n#section_1478055183 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\n\t<section class=\"section\" id=\"section_802346195\">\n\t\t<div class=\"section-bg fill\" >\n\t\t\t\t\t\t\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n<div class=\"row\"  id=\"row-396275535\">\n\n\t<div id=\"col-1929178633\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<h2>Specifiche di ASTM A691<\/h2>\n<table>\n<thead>\n<tr>\n<th>Standard<\/th>\n<th>ASTM A691<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Applicazione<\/td>\n<td>Specifica standard per tubi di acciaio al carbonio e legato, saldati per fusione elettrica per servizio ad alta pressione ad alte temperature<\/td>\n<\/tr>\n<tr>\n<td>Grado del tubo<\/td>\n<td>Acciaio legato ASTM A691 Cl22,1 CR,1\/2 CR,1 1\/4 CR,2 1\/4 CR, 3 CR,5 CR,9 CR,91,CM 65,CM70,CM75<\/td>\n<\/tr>\n<tr>\n<td>Designazione della classe<\/td>\n<td>Classe 10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 34, 40, 41, 42, 43, 50, 51, 52, 53, 60, 61, 62, 63, 70, 71, 72, 73..<\/td>\n<\/tr>\n<tr>\n<td>Procedura<\/td>\n<td>EFW, <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/uniasen.com\/it\/prodotti\/tubo-erw\/\">ERW<\/a><\/span>, <a href=\"https:\/\/uniasen.com\/it\/prodotti\/tubo-senza-saldatura\/\"><span style=\"color: #ff6600;\">SENZA CUCITURE<\/span><\/a>, <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/uniasen.com\/it\/prodotti\/tubo-lsaw\/\">LSAW<\/a><\/span><\/td>\n<\/tr>\n<tr>\n<td>Diametro esterno<\/td>\n<td>1\/2&#8221;- 36&#8221;<\/td>\n<\/tr>\n<tr>\n<td>Spessore della parete<\/td>\n<td>SCH10, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80, SCH100, SCH12,0 SCH140, SCH160, XXS<\/td>\n<\/tr>\n<tr>\n<td>Lunghezza del tubo<\/td>\n<td>Singola lunghezza casuale\/doppia lunghezza casuale 5m-14m, 5,8m, 6m, 10m-12m, 12m o come richiesta reale del cliente<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"3\">Tolleranza<\/td>\n<td>OD: +\/- 0,5 % del diametro esterno specificato<\/td>\n<\/tr>\n<tr>\n<td>WT: non pi\u00f9 di 0,01 pollici (0,3 mm) sotto lo spessore nominale specificato.<\/td>\n<\/tr>\n<tr>\n<td>Lunghezza: entro -0,+1\u20442 poll. (-0, +13 mm) rispetto a quella specificata.<\/td>\n<\/tr>\n<tr>\n<td>Superficie del tubo<\/td>\n<td>Nudo, verniciatura nera, verniciato, zincato, anticorrosione, rivestimento PE PP\/EP\/FBE<\/td>\n<\/tr>\n<tr>\n<td>Estremit\u00e0 del tubo<\/td>\n<td>Estremit\u00e0 lisce\/smussate, protette da tappi in plastica su entrambe le estremit\u00e0, tagliate quare, scanalate, filettate e con accoppiamenti<\/td>\n<\/tr>\n<tr>\n<td>Metodo tecnico<\/td>\n<td>Laminati a caldo\/trafilati a freddo\/espansi a caldo<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n\t\t<\/div>\n\n\t\t\n<style>\n#section_802346195 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\n\t<section class=\"section\" id=\"section_1963506745\">\n\t\t<div class=\"section-bg fill\" >\n\t\t\t\t\t\t\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n<div class=\"row\"  id=\"row-1678445463\">\n\n\t<div id=\"col-108477166\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<h2>Dimensione<\/h2>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<div class=\"row\"  id=\"row-11486949\">\n\n\t<div id=\"col-2127430063\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<table>\n<tbody>\n<tr>\n<td width=\"190\">Diametro esterno: diametro esterno<\/td>\n<td width=\"296\">16 pollici [405 mm] o pi\u00f9 grande<\/td>\n<\/tr>\n<tr>\n<td>Spessore della parete: spessore della parete<\/td>\n<td>fino a 3 in. [75 mm]<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\" width=\"486\">I tubi di altre dimensioni possono essere forniti a condizione che siano conformi a tutti gli altri requisiti della presente specifica.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n\t\t<\/div>\n\n\t\t\n<style>\n#section_1963506745 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\n\t<section class=\"section\" id=\"section_2080701787\">\n\t\t<div class=\"section-bg fill\" >\n\t\t\t\t\t\t\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n<div class=\"row\"  id=\"row-1813006801\">\n\n\t<div id=\"col-1235427877\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<h2>Requisiti chimici<\/h2>\n<table>\n<tbody>\n<tr>\n<td rowspan=\"2\" width=\"72\">Grado del tubo<\/td>\n<td rowspan=\"2\" width=\"359\">Tipo di acciaio<\/td>\n<td colspan=\"2\" width=\"184\">Specifica ASTM<\/td>\n<td rowspan=\"2\" width=\"72\">HB , maxA<\/td>\n<\/tr>\n<tr>\n<td>Numero<\/td>\n<td>Grado<\/td>\n<\/tr>\n<tr>\n<td>CM -65<\/td>\n<td>acciaio al carbonio e molibdeno<\/td>\n<td>A204\/A204M<\/td>\n<td>A<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>CM -70<\/td>\n<td>acciaio al carbonio e molibdeno<\/td>\n<td>A204\/A204M<\/td>\n<td>B<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>CM -75<\/td>\n<td>acciaio al carbonio e molibdeno<\/td>\n<td>A204\/A204M<\/td>\n<td>C<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>CmSH -70<\/td>\n<td>acciaio al carbonio - manganese - silicio, normalizzato<\/td>\n<td>A537\/A537M<\/td>\n<td>1<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>CMS -75<\/td>\n<td>acciaio al carbonio - manganese - silicio<\/td>\n<td>A299\/A299M<\/td>\n<td>&#8211;<\/td>\n<td>&#8211;<\/td>\n<\/tr>\n<tr>\n<td>CMSH -80<\/td>\n<td>acciaio al carbonio - manganese - silicio , bonificato<\/td>\n<td>A537\/A537M<\/td>\n<td>2<\/td>\n<td>&#8211;<\/td>\n<\/tr>\n<tr>\n<td>1\/2 CR<\/td>\n<td>1\/2% cromo, 1\/2% acciaio al molibdeno<\/td>\n<td>A387\/A387M<\/td>\n<td>2<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>1CR<\/td>\n<td>1% cromo, 1\/2% acciaio al molibdeno<\/td>\n<td>A387\/A387M<\/td>\n<td>12<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>1-1\/4 CR<\/td>\n<td>11\/4% cromo, 1\/2% acciaio al molibdeno<\/td>\n<td>A387\/A387M<\/td>\n<td>11<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>2-1\/4 CR<\/td>\n<td>Cromo 21\/4%, acciaio al molibdeno 1%<\/td>\n<td>A387\/A387M<\/td>\n<td>22<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>3CR<\/td>\n<td>Cromo 3%, acciaio al molibdeno 1%<\/td>\n<td>A387\/A387M<\/td>\n<td>21<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>5CR<\/td>\n<td>5% cromo, 1\/2% molibdeno acciaio<\/td>\n<td>A387\/A387M<\/td>\n<td>5<\/td>\n<td>225<\/td>\n<\/tr>\n<tr>\n<td>9CR<\/td>\n<td>9% cromo, 1% acciaio al molibdeno<\/td>\n<td>A387\/A387M<\/td>\n<td>9<\/td>\n<td>241<\/td>\n<\/tr>\n<tr>\n<td>91<\/td>\n<td>Cromo 9%, molibdeno 1%, vanadio, columbio<\/td>\n<td>A387\/A387M<\/td>\n<td>91B<\/td>\n<td>241<\/td>\n<\/tr>\n<tr>\n<td colspan=\"5\" width=\"687\">A I valori di durezza elencati sono applicabili a S3.<br \/>\nBG Il grado 91 sar\u00e0 designato con il tipo 1 o il tipo 2 quando richiesto dalla specifica prevalente.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n\t\t<\/div>\n\n\t\t\n<style>\n#section_2080701787 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\n\t<section class=\"section\" id=\"section_1880410615\">\n\t\t<div class=\"section-bg fill\" >\n\t\t\t\t\t\t\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n<div class=\"row\"  id=\"row-1867356135\">\n\n\t<div id=\"col-1875931589\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<h2>Requisiti meccanici<\/h2>\n<table>\n<thead>\n<tr>\n<th rowspan=\"2\">Grado del tubo<\/th>\n<th rowspan=\"2\">Tipo di acciaio<\/th>\n<th colspan=\"2\">Specifica ASTM<\/th>\n<th rowspan=\"2\">HB , maxA<\/th>\n<\/tr>\n<tr>\n<th>Numero<\/th>\n<th>Grado<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>CM -65<\/td>\n<td>acciaio al carbonio e molibdeno<\/td>\n<td>A204\/A204M<\/td>\n<td>A<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>CM -70<\/td>\n<td>acciaio al carbonio e molibdeno<\/td>\n<td>A204\/A204M<\/td>\n<td>B<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>CM -75<\/td>\n<td>acciaio al carbonio e molibdeno<\/td>\n<td>A204\/A204M<\/td>\n<td>C<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>CmSH -70<\/td>\n<td>acciaio al carbonio - manganese - silicio, normalizzato<\/td>\n<td>A537\/A537M<\/td>\n<td>1<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>CMS -75<\/td>\n<td>acciaio al carbonio - manganese - silicio<\/td>\n<td>A299\/A299M<\/td>\n<td>&#8211;<\/td>\n<td>&#8211;<\/td>\n<\/tr>\n<tr>\n<td>CMSH -80<\/td>\n<td>acciaio al carbonio - manganese - silicio , bonificato<\/td>\n<td>A537\/A537M<\/td>\n<td>2<\/td>\n<td>&#8211;<\/td>\n<\/tr>\n<tr>\n<td>1\/2 CR<\/td>\n<td>1\/2% cromo, 1\/2% acciaio al molibdeno<\/td>\n<td>A387\/A387M<\/td>\n<td>2<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>1CR<\/td>\n<td>1% cromo, 1\/2% acciaio al molibdeno<\/td>\n<td>A387\/A387M<\/td>\n<td>12<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>1-1\/4 CR<\/td>\n<td>11\/4% cromo, 1\/2% acciaio al molibdeno<\/td>\n<td>A387\/A387M<\/td>\n<td>11<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>2-1\/4 CR<\/td>\n<td>Cromo 21\/4%, acciaio al molibdeno 1%<\/td>\n<td>A387\/A387M<\/td>\n<td>22<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>3CR<\/td>\n<td>Cromo 3%, acciaio al molibdeno 1%<\/td>\n<td>A387\/A387M<\/td>\n<td>21<\/td>\n<td>201<\/td>\n<\/tr>\n<tr>\n<td>5CR<\/td>\n<td>5% cromo, 1\/2% molibdeno acciaio<\/td>\n<td>A387\/A387M<\/td>\n<td>5<\/td>\n<td>225<\/td>\n<\/tr>\n<tr>\n<td>9CR<\/td>\n<td>9% cromo, 1% acciaio al molibdeno<\/td>\n<td>A387\/A387M<\/td>\n<td>9<\/td>\n<td>241<\/td>\n<\/tr>\n<tr>\n<td>91<\/td>\n<td>Cromo 9%, molibdeno 1%, vanadio, columbio<\/td>\n<td>A387\/A387M<\/td>\n<td>91B<\/td>\n<td>241<\/td>\n<\/tr>\n<tr>\n<td colspan=\"5\">A I valori di durezza elencati sono applicabili a S3.<\/td>\n<\/tr>\n<tr>\n<td colspan=\"5\">BG Il grado 91 sar\u00e0 designato con il tipo 1 o il tipo 2 quando richiesto dalla specifica prevalente.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n\t\t<\/div>\n\n\t\t\n<style>\n#section_1880410615 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\n\t<section class=\"section\" id=\"section_919770878\">\n\t\t<div class=\"section-bg fill\" >\n\t\t\t\t\t\t\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n<div class=\"row align-middle align-center\"  id=\"row-1969650830\">\n\n\t<div id=\"col-815388236\" class=\"col medium-12 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<h2>Perch\u00e9 scegliere UNIASEN?<\/h2>\n<ul>\n<li>Saldati e con l'aggiunta di metallo d'apporto. Sono prodotti a partire da piastre di qualit\u00e0 per recipienti a pressione con diversi gradi di analisi e resistenza. Assicuriamo che il trattamento termico venga eseguito come richiesto per ottenere le propriet\u00e0 meccaniche richieste. I nostri tubi sono classificati in base al grado di acciaio e al trattamento termico utilizzato nella produzione.<\/li>\n<li>UNIASEN offre tubi ASTM A691\/A691M in un'ampia gamma di dimensioni. I nostri tubi sono disponibili in una variet\u00e0 di diametri, spessori di parete e lunghezze, per soddisfare le vostre esigenze specifiche.<\/li>\n<li>I tubi ASTM A691\/A691M sono elettrofusi. Sono destinati all'uso ad alta pressione e ad alta temperatura. I tubi ASTM A691\/A691M di UNIASEN sono disponibili in varie dimensioni per soddisfare le vostre esigenze.<\/li>\n<\/ul>\n<a href=\"#is-pop\" class=\"button primary\"  style=\"border-radius:10px;\">\n\t\t<span>Richiesta di preventivo<\/span>\n\t<\/a>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1560432228\" class=\"col medium-11 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n  <div class=\"banner has-hover\" id=\"banner-1528096998\">\n          <div class=\"banner-inner fill\">\n        <div class=\"banner-bg fill\" >\n            <img loading=\"lazy\" decoding=\"async\" width=\"2500\" height=\"1670\" src=\"https:\/\/uniasen.com\/wp-content\/uploads\/2024\/03\/UNIASEN-factory-gate.webp\" class=\"bg\" alt=\"Cancello dello stabilimento UNIASEN\" srcset=\"https:\/\/uniasen.com\/wp-content\/uploads\/2024\/03\/UNIASEN-factory-gate.webp 2500w, https:\/\/uniasen.com\/wp-content\/uploads\/2024\/03\/UNIASEN-factory-gate-300x200.webp 300w, https:\/\/uniasen.com\/wp-content\/uploads\/2024\/03\/UNIASEN-factory-gate-1030x688.webp 1030w, https:\/\/uniasen.com\/wp-content\/uploads\/2024\/03\/UNIASEN-factory-gate-768x513.webp 768w, https:\/\/uniasen.com\/wp-content\/uploads\/2024\/03\/UNIASEN-factory-gate-1536x1026.webp 1536w, https:\/\/uniasen.com\/wp-content\/uploads\/2024\/03\/UNIASEN-factory-gate-2048x1368.webp 2048w\" sizes=\"auto, (max-width: 2500px) 100vw, 2500px\" \/>                                    \n                    <\/div>\n\t\t\n        <div class=\"banner-layers container\">\n            <div class=\"fill banner-link\"><\/div>            \n   <div id=\"text-box-1742647380\" class=\"text-box banner-layer x50 md-x50 lg-x50 y50 md-y50 lg-y50 res-text\">\n                                <div class=\"text-box-content text dark\">\n              \n              <div class=\"text-inner text-center\">\n                  \n<div class=\"video-button-wrapper\" style=\"font-size:200%\"><a href=\"https:\/\/www.youtube.com\/watch?v=oDiJnYyLsz4\" class=\"button open-video icon circle is-outline is-xlarge\"><i class=\"icon-play\" style=\"font-size:1.5em;\" ><\/i><\/a><\/div>\n              <\/div>\n           <\/div>\n                            \n<style>\n#text-box-1742647380 {\n  width: 60%;\n}\n#text-box-1742647380 .text-box-content {\n  font-size: 100%;\n}\n<\/style>\n    <\/div>\n \n        <\/div>\n      <\/div>\n\n            \n<style>\n#banner-1528096998 {\n  padding-top: 56.25%;\n}\n<\/style>\n  <\/div>\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n\t\t<\/div>\n\n\t\t\n<style>\n#section_919770878 {\n  padding-top: 0px;\n  padding-bottom: 0px;\n  background-color: rgba(231, 238, 241, 0.238);\n}\n@media (min-width:550px) {\n  #section_919770878 {\n    padding-top: 30px;\n    padding-bottom: 30px;\n  }\n}\n<\/style>\n\t<\/section>\n\t\n\t<div id=\"gap-191362894\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-191362894 {\n  padding-top: 3%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t<section class=\"section\" id=\"section_1724906982\">\n\t\t<div class=\"section-bg fill\" >\n\t\t\t\t\t\t\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-308819310\">\n\n\n\t<div id=\"col-1357897333\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"slider-wrapper relative\" id=\"slider-450631061\" >\n    <div class=\"slider slider-nav-circle slider-nav-large slider-nav-light slider-style-normal\"\n        data-flickity-options='{            \"cellAlign\": \"center\",            \"imagesLoaded\": true,            \"lazyLoad\": 1,            \"freeScroll\": false,            \"wrapAround\": true,            \"autoPlay\": 6000,            \"pauseAutoPlayOnHover\" : true,            \"prevNextButtons\": true,            \"contain\" : true,            \"adaptiveHeight\" : true,            \"dragThreshold\" : 10,            \"percentPosition\": true,            \"pageDots\": true,            \"rightToLeft\": false,            \"draggable\": true,            \"selectedAttraction\": 0.1,            \"parallax\" : 0,            \"friction\": 0.6        }'\n        >\n        \n\n<div class=\"row\"  id=\"row-1640863218\">\n\n\n\t<div id=\"col-456237926\" class=\"col medium-3 small-6 large-3\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_568619375\">\n\t\t<a class=\"\" href=\"https:\/\/uniasen.com\/it\/prodotti\/tubo-erw\/\" target=\"_blank\" rel=\"noopener\" >\t\t\t\t\t\t<div class=\"img-inner image-cover box-shadow-3-hover dark\" style=\"padding-top:75%;\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/UNIASEN-Carbon-Steel-Welded-Pipe.webp\" class=\"attachment-original size-original\" alt=\"Cina Tubo ERW produttore\" srcset=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/UNIASEN-Carbon-Steel-Welded-Pipe.webp 600w, https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/UNIASEN-Carbon-Steel-Welded-Pipe-300x200.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\t\t\n<style>\n#image_568619375 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t<div id=\"text-1313296679\" class=\"text\">\n\t\t\n\n<p><strong>Tubo saldato<\/strong><\/p>\n\t\t\n<style>\n#text-1313296679 {\n  text-align: center;\n  color: rgb(0,0,0);\n}\n#text-1313296679 > * {\n  color: rgb(0,0,0);\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1228331529\" class=\"col medium-3 small-6 large-3\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_305257867\">\n\t\t<a class=\"\" href=\"https:\/\/uniasen.com\/it\/prodotti\/tubo-per-sega\/\" target=\"_blank\" rel=\"noopener\" >\t\t\t\t\t\t<div class=\"img-inner image-cover box-shadow-3-hover dark\" style=\"padding-top:75%;\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/UNIASEN-spiral-welded-pipe-SSAW-Pipe.webp\" class=\"attachment-original size-original\" alt=\"Produttore e fornitore di tubi d&#039;acciaio per sega\" srcset=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/UNIASEN-spiral-welded-pipe-SSAW-Pipe.webp 600w, https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/UNIASEN-spiral-welded-pipe-SSAW-Pipe-300x200.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\t\t\n<style>\n#image_305257867 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t<div id=\"text-3559746083\" class=\"text\">\n\t\t\n\n<p><strong>Tubo in acciaio SSAW<\/strong><\/p>\n\t\t\n<style>\n#text-3559746083 {\n  text-align: center;\n  color: rgb(0,0,0);\n}\n#text-3559746083 > * {\n  color: rgb(0,0,0);\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-869160031\" class=\"col medium-3 small-6 large-3\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1314760720\">\n\t\t<a class=\"\" href=\"https:\/\/uniasen.com\/it\/prodotti\/sezioni-cave\/\" target=\"_blank\" rel=\"noopener\" >\t\t\t\t\t\t<div class=\"img-inner image-cover box-shadow-3-hover dark\" style=\"padding-top:75%;\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/UNIASEN-hollow-structural-section-manufacturer-and-supplier.webp\" class=\"attachment-original size-original\" alt=\"sezione cava in acciaio-sezione cava strutturale-Uniasen\" srcset=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/UNIASEN-hollow-structural-section-manufacturer-and-supplier.webp 600w, https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/UNIASEN-hollow-structural-section-manufacturer-and-supplier-300x200.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\t\t\n<style>\n#image_1314760720 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t<div id=\"text-1993576007\" class=\"text\">\n\t\t\n\n<p><strong>Sezione strutturale cava<\/strong><\/p>\n\t\t\n<style>\n#text-1993576007 {\n  text-align: center;\n  color: rgb(0,0,0);\n}\n#text-1993576007 > * {\n  color: rgb(0,0,0);\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-68453713\" class=\"col medium-3 small-6 large-3\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1086275457\">\n\t\t<a class=\"\" href=\"https:\/\/uniasen.com\/it\/prodotti\/tubo-senza-saldatura\/\" target=\"_blank\" rel=\"noopener\" >\t\t\t\t\t\t<div class=\"img-inner image-cover box-shadow-3-hover dark\" style=\"padding-top:75%;\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-seamless-carbon-steel-pipe.webp\" class=\"attachment-original size-original\" alt=\"tubo d&#039;acciaio senza saldatura - tubo SIML\" srcset=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-seamless-carbon-steel-pipe.webp 600w, https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-seamless-carbon-steel-pipe-300x200.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\t\t\n<style>\n#image_1086275457 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t<div id=\"text-3835968784\" class=\"text\">\n\t\t\n\n<p><strong>Tubo in acciaio senza saldatura<\/strong><\/p>\n\t\t\n<style>\n#text-3835968784 {\n  text-align: center;\n  color: rgb(0,0,0);\n}\n#text-3835968784 > * {\n  color: rgb(0,0,0);\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row\"  id=\"row-1366481958\">\n\n\n\t<div id=\"col-1812717992\" class=\"col medium-3 small-6 large-3\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1170268097\">\n\t\t<a class=\"\" href=\"https:\/\/uniasen.com\/it\/prodotti\/raccordi-per-tubi\/\" target=\"_blank\" rel=\"noopener\" >\t\t\t\t\t\t<div class=\"img-inner image-cover box-shadow-3-hover dark\" style=\"padding-top:75%;\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-pipe-fitting-manufacturer.webp\" class=\"attachment-original size-original\" alt=\"raccordi per tubi in Cina, raccordi per tubi in acciaio al carbonio\" srcset=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-pipe-fitting-manufacturer.webp 600w, https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-pipe-fitting-manufacturer-300x200.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\t\t\n<style>\n#image_1170268097 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t<div id=\"text-2591131962\" class=\"text\">\n\t\t\n\n<p><strong>Raccordi per tubi Raccordi per tubi<\/strong><\/p>\n\t\t\n<style>\n#text-2591131962 {\n  text-align: center;\n  color: rgb(0,0,0);\n}\n#text-2591131962 > * {\n  color: rgb(0,0,0);\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1837133551\" class=\"col medium-3 small-6 large-3\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_872641334\">\n\t\t<a class=\"\" href=\"https:\/\/uniasen.com\/it\/steel-pipe-standards\/fire-sprinkler-pipe\/\" target=\"_blank\" rel=\"noopener\" >\t\t\t\t\t\t<div class=\"img-inner image-cover box-shadow-3-hover dark\" style=\"padding-top:75%;\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/UNIASEN-fire-sprinkler-pipe-supplier-1.webp\" class=\"attachment-original size-original\" alt=\"\" srcset=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/UNIASEN-fire-sprinkler-pipe-supplier-1.webp 600w, https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/UNIASEN-fire-sprinkler-pipe-supplier-1-300x200.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\t\t\n<style>\n#image_872641334 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t<div id=\"text-2192498116\" class=\"text\">\n\t\t\n\n<p><strong>Tubo per sprinkler antincendio<\/strong><\/p>\n\t\t\n<style>\n#text-2192498116 {\n  text-align: center;\n  color: rgb(0,0,0);\n}\n#text-2192498116 > * {\n  color: rgb(0,0,0);\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-392774727\" class=\"col medium-3 small-6 large-3\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_599573264\">\n\t\t<a class=\"\" href=\"https:\/\/uniasen.com\/it\/steel-pipe-standards\/line-pipe\/\" target=\"_blank\" rel=\"noopener\" >\t\t\t\t\t\t<div class=\"img-inner image-cover box-shadow-3-hover dark\" style=\"padding-top:75%;\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-line-pipe-manufacturer.webp\" class=\"attachment-original size-original\" alt=\"\" srcset=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-line-pipe-manufacturer.webp 600w, https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-line-pipe-manufacturer-300x200.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\t\t\n<style>\n#image_599573264 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t<div id=\"text-2649535543\" class=\"text\">\n\t\t\n\n<p><strong>Tubo di linea<\/strong><\/p>\n\n\t\t\n<style>\n#text-2649535543 {\n  text-align: center;\n  color: rgb(0,0,0);\n}\n#text-2649535543 > * {\n  color: rgb(0,0,0);\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-223959334\" class=\"col medium-3 small-6 large-3\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_632946430\">\n\t\t<a class=\"\" href=\"https:\/\/uniasen.com\/it\/steel-pipe-standards\/astm-a106\/\" target=\"_blank\" rel=\"noopener\" >\t\t\t\t\t\t<div class=\"img-inner image-cover box-shadow-3-hover dark\" style=\"padding-top:75%;\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-ASTM-A106-Seamless-Carbon-Steel-Pipe.webp\" class=\"attachment-original size-original\" alt=\"\" srcset=\"https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-ASTM-A106-Seamless-Carbon-Steel-Pipe.webp 600w, https:\/\/uniasen.com\/wp-content\/uploads\/2023\/11\/Uniasen-ASTM-A106-Seamless-Carbon-Steel-Pipe-300x200.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\t\t\n<style>\n#image_632946430 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t<div id=\"text-2029017730\" class=\"text\">\n\t\t\n\n<p><strong>ASTM A106 Tubo in acciaio senza saldatura<\/strong><\/p>\n\t\t\n<style>\n#text-2029017730 {\n  text-align: center;\n  color: rgb(0,0,0);\n}\n#text-2029017730 > * {\n  color: rgb(0,0,0);\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n     <\/div>\n\n     <div class=\"loading-spin dark large centered\"><\/div>\n\n\t<\/div>\n\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_1724906982 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":3,"featured_media":4715,"parent":2187,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-blank.php","meta":{"footnotes":""},"class_list":["post-2823","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ASTM A691 Carbon and Alloy Steel Pipe Specification<\/title>\n<meta name=\"description\" content=\"ASTM A691 standard specifies the requirements for carbon and alloy steel pipes that are electric-fusion-welded with added filler metal, crafted from pressure-vessel-quality plates. These pipes, made from Chrome Moly steel, are designed to withstand high temperatures and pressures, making them suitable for demanding industrial applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/uniasen.com\/it\/standard\/astm-a691\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ASTM A691 Carbon and Alloy Steel Pipe Specification\" \/>\n<meta property=\"og:description\" content=\"ASTM A691 standard specifies the requirements for carbon and alloy steel pipes that are electric-fusion-welded with added filler metal, crafted from pressure-vessel-quality plates. 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