PRODUCT 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 NameDIN 1629 Seamless Steel Pipe
StandardEN/DIN/JIS/ASTM/BS/ASME/AISI etc.
Outer DiameterSeamless: 1/4"-36"Welding: 21.3mm-3620mm
Round Tube: 1/2"-10"Square Tube/Rectangular Tube: 15x15mm-400x600mm
Wall ThicknessSeamless: 1.25mm-50mmWelding: 1.65mm-65mm
Length3-12 meters, Support customization
Surface ProcessBright, Polished, Black
Other ServicesMachining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

 

Chemical Composition

GradeMaterials No.Deoxidation YypeCPSN¹)
St371.0254R0.170.0400.0400.009 ²)
St441.0255R0.210.0400.0400.009 ²)
St521.0421RR0.220.0400.035-

 

Mechanical Properties

DIN 1629Yield Strength (Wall Thickness/mm)Tensile Strength N/² mmElongation (%) A5
GradeMaterial No.<1616-4040-65VerticalTransverse
St371.0254235225216350²) to 4802523
St441.0256275265 ¹)255 ¹)420²) to 5502119
St521.0421355345335500²) to 6502119

 

Scope of Application

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


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