DIN1629 introduction and specification

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DIN1629 is the standard of the seamless alloy steel pipeline with special quality requirements. The main steel grades contain DIN1629 ST37.0, DIN1629 ST44.0 and DIN1629 ST52.0.

★ Name: DIN1629 seamless alloy steel line pipe
★ Standard: DIN1629/EN10216-1
★ Size: O.D.: 28-168;
               W.T.: 2∼30;
               L: max 12000

★ Specifications:
      Diameter 320 to 127 mm;
      Thickness: 0.4 to 12.7 mm;
      Length: 6 m and above; and other

★ Applications: DIN1629 seamless steel pipeline is used for manufacturing pipeline, vessel, equipment and pipe fittings.

★ Delivery: Full-annealed, normalized, BKS(stress-relieving), BKW, BK

★ Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers’ requirements.

★ Painting: Just as customers’ required! Oil-coating, varnish, or end-protection by plastic caps to be confirmed.

Features Specifications:

OD (mm)

Wall Thickness Unit (mm)

2.5

3.5

4.5

6.5-7

7.5-8

8.5-9

9.5-10

Φ25-Φ28

●

Φ32

●

Φ34-Φ36

●

Φ38

●

Φ40

●

Φ42

●

Φ45

●

Φ48-Φ60

●

Φ63.5

●

Φ68-Φ73

●

Φ76

●

Φ80

●

Φ83

●

Φ89

●

Φ95

●

Φ102

●

Φ108

●

Φ114

●

Φ121

●

Φ127

●

Φ133

●

Φ140

●

Φ146

●

Φ152

●

Φ159

●

Φ168

●

Seamless Alloy Steel Line Pipe
Applications:	Pipelines, Vessels, Machinery, Pipe fittings
Size (mm):	O.D.: 6.0~219.0; W.T.: 1~30; L: max 12000

Steel, Chemical Composition (DIN1629):

Standard	Grade	Chemical Composition							Mechanical Properties
Standard	Grade	C	Si	Mn	P≤	S≤	Cr	Mo	(MPa)	(MPa)	(%)
DIN1629	St35.8/St37.5	≤0.17	/	/	0.04	0.04	/	/	350~480	≥235	≥25
DIN1629	St52.0/St52.3	≤0.22	≤0.55	≤0.17	0.04	0.04	/	/	500~560	≥270	≥21

Steel,Chemical Composition(EN10216-1):

Standard

Grade

Chemical Composition

Mechanical Property

P≤

S≤

Cr≤

(MPa)

EN10216-1

P195TR1

≤0.13

≤0.35

≤0.70

0.025

0.020

0.30

≤0.08

320~440

≥195

≥27

≥25

P235TR1

≤0.16

≤0.35

≤1.20

0.025

0.020

0.30

≤0.08

360~500

≥235

≥25

≥23

P265TR1

≤0.20

0.40

1.40

0.025

0.020

0.30

≤0.08

410~570

≥265

≥23

≥19

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