DIN 1629 Carbon Seamless Circular Unalloyed Steel Pipes

DIN 1629 carbon seamless steel pipes

Standard-Übersicht:

DIN 1629 specifies seamless circular steel pipes for general structural purposes. It outlines the delivery conditions for non-alloy steel pipes that do not require inspection or testing. The standard ensures that the steel pipes meet the required dimensions and properties for structural and pressure uses.

Hauptmaterial:

Non-alloy steel. Steel grades include St 37.0, St 44.0 and St 52.0.

Umfang der Anwendung:

DIN 1629 steel pipes are used in construction, machinery, and piping systems for pressurized fluids. They are commonly used in industries such as automotive, chemical and petrochemical.

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Why Choose UNIASEN DIN 1629 Pipe?

Our products are made of DIN 1629 seamless carbon steel pipes, with the main grades being St 37.0, St44.0, and St52.0. Especially the St 52.0 grade, which is a low-cost mild steel with a carbon content of up to 0.22%. Not only is it tough, but it also has high tensile properties, making it ideal for use in structural components.
Our pipes have no restrictions on working pressure values and a maximum working temperature of 300℃. Its mechanical properties suit it for many welding methods. These include gas fusion welding, arc welding, flash butt welding, voltage welding, and gas pressure welding.
Our DIN 1629 seamless carbon steel pipes have detailed specs. These include dimensions, manufacturing procedures, steel grades, surface coatings, end types, joint methods, and processing services.
The steel used is of the highest grade, offering high strength and durability. The surface coating is carefully applied to resist corrosion and extend service life.
The end types and joint methods are designed for easy installation and a secure fit. We customize our processing services to your needs. This ensures they integrate with your existing setup.

Spezifikation

Standard	DIN1629
Verfahren	SMLS
Abmessungen	10.2mm – 660mm
	1/8″ – 26″
	DN6 – DN800
Dicke	1.8mm – 30mm
Einheit Länge	6 meters, 12 meters or customized.
Stahlsorte	DIN 1629 St37.0
	DIN 1629 St44.0
	DIN 1629 St52.0
Oberflächenbeschichtung	Lackierung, Schwarz, Ölen, Feuerverzinkung
Ende Typ	Vierkantschnitt, schräg, mit Gewinde, gerillt
Gemeinsame Methode	Fitting, Flansch, Kupplung, Schelle, Rohrschulter, Schweißen
Bearbeitung von Rohren	Schweißen, Biegen, Bohren, Stanzen, Gesenkschmieden, Konifizieren, Bördeln, Expandieren

Dimension

Außerhalb
Durchmesser

Rohrdicke （mm）

mm

1.6

1.8

2

2.3

2.6

2.9

3.2

3.6

4.0

4.5

5

5.6

6.3

7.1

8.0

8.8

10

11

12.5

14.2

16

17.5

20

22.2

25

28

30

32

36

40

45

50

55

60

65

70

75

80

85

90

100

10.2

●

13.5

●

16

●

17.2

●

19

●

20

●

21.3

●

25

●

25.4

●

26.9

●

30

●

31.8

●

33.7

●

38

●

42.4

●

44.5

●

48.3

●

51

●

54

●

57

●

60.3

●

63.5

●

70

●

73

●

76.1

●

82.5

●

88.9

●

101.6

●

108

●

114.3

●

127

●

133

●

139.7

●

152.4

●

159

●

168.3

●

177.8

●

193.7

●

219.1

●

244.5

●

273

●

323.9

●

355.6

●

406.4

●

457

●

508

●

559

●

610

●

660

●

Chemischer Bedarf

Chemical requirements include a maximum carbon content of 0.22%, which makes the pipe easily formable. Other elements are also controlled to ensure the hardness, strength, and weldability of the pipe.

Stahlsorte		Chemical Composition % by Mass
Symbol	Material Nummer	Type of Deoxidization（R，Killed（Including Semi-Killed）RR，Fully Killed）	C	P	S	N	Addition of Nitrogen Fixing Elements（e.g.not less than 0.020%Altotal）
St 37.0	1.0254	R	0.17	0.04	0.04	0.009	–
St 44.0	1.0256	R	0.21	0.04	0.04	0.009	–
St 52.0	1.0421	RR	0.22	0.04	0.035	–	Yes

Mechanische Anforderung

Our DIN 1629 seamless carbon steel tubes meet strict mechanical standards. They require high tensile strength, which is vital for structural components.

Stahlsorte		Upper Yield Stress ReH For Wall Thickness，in mm			Zugfestigkeit Rm	Elongation After Fracture
Stahlsorte		up to 16	Over 16 up to 40	Over 40 up to 65	Zugfestigkeit Rm	Longitudinal	Transversal
Symbol	Material Nummer	N/mm2 min			N/mm2	% min
St 37.0	1.0254	235	225	215	350 bis 480	25	23
St 44.0	1.0256	275	265	255	420 bis 550	21	19
St 52.0	1.0421	355	345	335	500 bis 650	21	19

DIN 1629