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DIN 1629 Seamless Steel Pipe
DIN 1629 seamless steel pipe has three main grades of St37.0, St44.0, St52.0. Generally, the DIN 1629 standard is not limited to the working pressure value, and the working temperature is limited to below 300 ℃.
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DIN 1629 Seamless Steel Pipe Description

DIN  1629 seamless steel pipes are circular tubes and pipes made up of non  alloy materials for special quality requirements. There are three major  grades as DIN 1629 ST 37.0, 44.0 and 52.0. The DIN 1629 Pipe grades  differ in the material composition and the mechanical properties. The  applications of the different grades of the DIN 1629 include  manufacturing pipeline, vessels, equipment, pipe fittings and other  applications. The DIN 1629 seamless steel pipe  can be hot rolled, cold worked, stress relieved, annealed or normalized  for heat treatment to improve the hardness of the products.


Product Parameters

Product Name

DIN 1629 Seamless Steel Pipe

Standard

EN/DIN/JIS/ASTM/BS/ASME/AISI etc.

Outer Diameter

Seamless: 1/4"-36"

Welding: 21.3mm-3620mm

Round Tube: 1/2"-10"

Square Tube/Rectangular Tube: 15x15mm-400x600mm

Wall Thickness

Seamless: 1.25mm-50mm

Welding: 1.65mm-65mm

Length

3-12 meters, Support customization

Surface Process

Bright, Polished, Black

Other Services

Machining(cnc),  Centerless Grinding(cg), Heat Treatment, Annealing, Pickling,  Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

 

Chemical Composition

Grade

Materials No.

Deoxidation Yype

C

P

S

N¹)

St37

1.0254

R

0.17

0.040

0.040

0.009 ²)

St44

1.0255

R

0.21

0.040

0.040

0.009 ²)

St52

1.0421

RR

0.22

0.040

0.035

-

 

Mechanical Properties

DIN 1629

Yield Strength (Wall Thickness/mm)

Tensile Strength N/² mm

Elongation (%) A5

Grade

Material No.

<16

16-40

40-65

Vertical

Transverse

St37

1.0254

235

225

216

350²) to 480

25

23

St44

1.0256

275

265 ¹)

255 ¹)

420²) to 550

21

19

St52

1.0421

355

345

335

500²) to 650

21

19

 

Scope of Application

Seamless steel pipe applications are: chemical plants, vessels, pipeline engineering and general mechanical engineering.

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   FAQ

Q: Are you a trading company or a manufacturer?

A: We are a professional manufacturer and offer a wide range of steel products.

Q: Do you provide samples?

A: Yes, we will provide samples for free, and the express shipping cost will be borne by customers.

Q: Can you customize the products according to our requirements?

A: Yes, just tell us your requirements, we can provide you with customized solutions, such as material, hardness, thickness, width and so on.

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A: Of course you can, we welcome customers from all over the world to visit our factory.

Q: Are the products quality inspected before shipment?

A: Of course, all our products undergo strict quality inspection before packing, and unqualified products will be destroyed. We absolutely accept third party inspection.

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