JIS G3452 carbon steel pipe

Vantaggi e svantaggi dei tubi neri in acciaio UNIASEN

JIS G3452 Carbon Steel Pipe

JIS G3452 specifies the requirements for carbon steel pipes used in common piping applications. We offer JIS G 3452 Carbon Steel Pipes in SGP grade. SGP is a commonly used material in the construction of such pipelines.

These pipes are primarily used to transport a variety of fluids including steam, water, oil, gas, and air at relatively low working pressures.

Preventivo gratuito

JIS G3452 Specification

Standard	JIS G 3452
Procedura	SMLS
Dimensioni	10.5mm – 508mm
Dimensioni	1/8″ – 20″
	DN6 – DN500
Spessore	1.7mm – 7.9mm
Spessore	SCH 10 – SCH 40
Unità Lunghezza	6 metri, 12 metri o su misura.
Grado di acciaio	JIS G 3452 SGP
Rivestimento di superficie	Black, Hot Dip Galvanizing
Tipo di estremità	Taglio quadrato, smussato, filettato, scanalato
Metodo congiunto	Raccordo, flangia, accoppiamento, morsetto, spalla del tubo, saldatura
Lavorazione di tubi	Saldatura, curvatura, foratura, punzonatura, imbutitura, rastrematura, svasatura, dilatazione

JIS G3452 Dimension

Diametro esterno e spessore della parete specificati ammissibili
Specified Outside Diameter D mm (in.)	Specified Wall Thickness t mm (in.)
Specified Outside Diameter D mm (in.)	Dimensioni speciali della luce a	Taglie regolari
≥ 10,3 (0,405) a < 13,7 (0,540)	-	≥ 1,7 (0,068) a ≤ 2,4 (0,094)
≥ 13,7 (0,540) a < 17,1 (0,675)	-	≥ 2,2 (0,088) a ≤ 3,0 (0,118)
≥ 17,1 (0,675) a < 21,3 (0,840)	-	≥ 2,3 (0,091) a ≤ 3,2 (0,125)
≥ 21,3 (0,840) a < 26,7 (1,050)	-	≥ 2,1 (0,083) a ≤ 7,5 (0,294)
≥ 26,7 (1,050) a < 33,4 (1,315)	-	≥ 2,1 (0,083) a ≤ 7,8 (0,308)
≥ 33,4 (1,315) a < 48,3 (1,900)	-	≥ 2,1 (0,083) a ≤ 10,0 (0,394)
≥ 48,3 (1,900) a < 60,3 (2,375)	-	≥ 2,1 (0,083) a ≤ 12,5 (0,492)
≥ 60,3 (2,375) a < 73,0 (2,875)	≥ 2,1 (0,083) a ≤ 3,6 (0,141)	> 3,6 (0,141) a ≤ 14,2 (0,559)
≥ 73,0 (2,875) a < 88,9 (3,500)	≥ 2,1 (0,083) a ≤ 3,6 (0,141)	> 3,6 (0,141) a ≤ 20,0 (0,787)
≥ 88,9 (3,500) a < 101,6 (4,000)	≥ 2,1 (0,083) a ≤ 4,0 (0,156)	> 4,0 (0,156) a ≤ 22,0 (0,866)
≥ 101,6 (4,000) a < 168,3 (6,625)	≥ 2,1 (0,083) a ≤ 4,0 (0,156)	> 4,0 (0,156) a ≤ 25,0 (0,984)
≥ 168,3 (6,625) a < 219,1 (8,625)	≥ 2,1 (0,083) a ≤ 4,0 (0,156)	> 4,0 (0,156) a ≤ 40,0 (1,575)
≥ 219,1 (8,625) a < 273,1 (10,750)	≥ 3,2 (0,125) a ≤ 4,0 (0,156)	> 4,0 (0,156) a ≤ 40,0 (1,575)
≥ 273,1 (10,750) a < 323,9 (12,750)	≥ 3,6 (0,141) a ≤ 5,2 (0,203)	> 5,2 (0,203) a ≤ 45,0 (1,771)
≥ 323,9 (12,750) a < 355,6 (14,000)	≥ 4,0 (0,156) a ≤ 5,6 (0,219)	> 5,6 (0,219) a ≤ 45,0 (1,771)
≥ 355,6 (14.000) a < 457 (18.000)	≥ 4,5 (0,177) a ≤ 7,1 (0,281)	> 7,1 (0,281) a ≤ 45,0 (1,771)
≥ 457 (18.000) a < 559 (22.000)	≥ 4,8 (0,188) a ≤ 7,1 (0,281)	> 7,1 (0,281) a ≤ 45,0 (1,771)
≥ 559 (22.000) a < 711 (28.000)	≥ 5,6 (0,219) a ≤ 7,1 (0,281)	> 7,1 (0,281) a ≤ 45,0 (1,771)
≥ 711 (28.000) a < 864 (34.000)	≥ 5,6 (0,219) a ≤ 7,1 (0,281)	> 7,1 (0,281) a ≤ 52,0 (2,050)
≥ 864 (34.000) a < 965 (38.000)	-	≥ 5,6 (0,219) a ≤ 52,0 (2,050)
≥ 965 (38.000) a < 1422 (56.000)	-	≥ 6,4 (0,250) a ≤ 52,0 (2,050)
≥ 1422 (56.000) a < 1829 (72.000)	-	≥ 9,5 (0,375) a ≤ 52,0 (2,050)
≥ 1829 (72.000) a < 2134 (84.000)	-	≥ 10,3 (0,406) a ≤ 52,0 (2,050)
NOTA I valori standardizzati per il diametro esterno specificato e lo spessore di parete specificato dei tubi sono riportati nelle norme ISO 4200 [7] e ASME B36.10M[8].
a I tubi che presentano la combinazione di diametro esterno e spessore di parete specificati sono definiti tubi speciali di dimensioni leggere; le altre combinazioni indicate in questa tabella sono definite tubi di dimensioni normali.

Requisiti chimici

Designazione del grado	P	S
SGP	0,040 max.	0,040 max.

Requisiti meccanici

Tensile Strength And Elongation
Designation of Symbol	Tensile Strength N/mm2	Allungamento %
		Tensile Test Piece	Tensile Test Direction	Spessore della parete
		Tensile Test Piece	Tensile Test Direction	Over 3mm up to and incl.4mm	Over 4mm up to and incl.5mm	Over 5mm up to and incl.6mm	Over 6mm up to and incl.7mm	Over 7mm up to and incl.8mm
SGP	290 min.	No.11 Test Piece	Parallel to the pipe axis	30 min.	30 min.	30 min.	30 min.	30 min.


		No.12 Test Piece	Parallel to the pipe axis	24 min.	26 min.	27 min.	28 min.	30 min.


		No.5 Test Piece	Perpendicular to the pipe axis	19 min.	20 min.	22 min.	24 min.	25 min.


NOTE: 1 N/mm2 =1 MPa

JIS G3452 pipe manufacturing method

According to JIS G3452, the process of manufacturing carbon steel pipes is as follows:

The pipes are mainly manufactured by resistance welding or butt welding. After manufacturing, the pipes are usually delivered in the manufactured state.
The cold-worked pipes need to be annealed after manufacturing. The purpose of this is to release the stress generated during the manufacturing process and improve the ductility and toughness of the pipes.
The ends of the pipes can be threaded or plain. For pipes with a nominal diameter of 350A and above, plain ends are usually used. For pipes with a nominal diameter of 300A and below, threaded or plain ends can be selected. Beveled ends can also be selected if the buyer has special requirements.
If a threaded end is selected, a tapered thread needs to be manufactured in accordance with JIS B 0203. One end of the thread needs to be screwed into a sleeve that complies with JIS B 2301 or JIS B 2302. For the end that is not screwed into the sleeve, a thread protection ring or other appropriate protection method is required.
Before threading the pipes and sockets, galvanizing is required. Galvanizing protects the metal from corrosion and prolongs its service life. The zinc used for galvanizing should be grade 1 distilled zinc ingot specified in JIS H 2107 or at least equivalent. Other general matters of galvanizing should be carried out in accordance with JIS H 8641.
Before galvanizing, the pipes and sockets need to be sandblasted, pickled, etc. This can ensure the adhesion of the galvanized layer and make the pipes more corrosion-resistant.