DIN 1629 Carbon Seamless Circular Unalloyed Steel Pipes

DIN 1629 carbon seamless steel pipes

Panoramica dello standard:

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.

Materiale principale:

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

Ambito di applicazione:

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.

Specifiche

Standard	DIN1629
Procedura	SMLS
Dimensioni	10.2mm – 660mm
	1/8″ – 26″
	DN6 – DN800
Spessore	1.8mm – 30mm
Unità Lunghezza	6 meters, 12 meters or customized.
Grado di acciaio	DIN 1629 St37.0
	DIN 1629 St44.0
	DIN 1629 St52.0
Rivestimento di superficie	Verniciatura, nero, oliatura, zincatura a caldo
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

Dimensione

All'esterno
Diametro

Spessore del tubo (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

●

Requisiti chimici

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.

Grado di acciaio		Chemical Composition % by Mass
Symbol	Material Numero	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

Requisiti meccanici

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

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