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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	Tensile Strength N/² mm	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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