Seamless Precision Seamless Steel Tube

Short Description:

High precision cold rolled seamless steel tube identifies the precision steel pipe with high dimension precision (inside diameter and outside diameter), good surface finish, excellent roundness and straightness, and uniform wall occurrence. It can be widely used in automobile, motorcycle, electric vehicle, petrochemical, electric power, ship, aerospace, bearing, pneumatic components, medium and low pressure boiler seamless steel tubes and other industries, and can also be applied to steel sleeve, bearing, hydraulic, mechanical processing and other fields.

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Product Detail

Product Tags

Product Introduction

Inside and Outside wall of Precision seamless steel pipe with high-precision, high-quality finish, after heat-treated, steel pipe without oxide layer, the inner wall with cleanliness, steel to withstand high pressure, not deformation of the cold bending, flaring, flattening without cracks, for a variety of complex deformation and machining treatment.

The seamless precision seamless steel tubes can be used for a wide range of precision mechanical spare for car and cylinder accord to standard:DIN 2391, EN10305-1,DIN17175 etc.

Material: ST35,ST45,ST52

Manufacturing method: Cold-Rolled, Cold-Drawn

Delivery condition: BK,BKS,SR,GBK,NBK.

Packing: Bundles by steel strips.

External packing by wooden cases if the wall thickness.

Oil-coating is generally necessary especially for export.

Application: Used in hydraulic & pneumatic cylinder ,automobile and other mechanical device.

Product Display

Chemical Composition(%)

Grade	Material	C	Si	Mn	P	S
Grade	Material	max	max	max	max	max
St35	1.0308	0.17	0.35	0.4	0.05	0.05
St45	1.0408	0.21	0.35	0.4	0.05	0.05
St52	1.0508	0.22	0.55	1.6	0.05	0.05

Mechanical and Technological Properties

Grade	Material	Cold-Finished /Hard(BK)		Cold-Finished/Soft (BKW)
Grade	Material	Rm(Mpa)	A(%)	Rm(Mpa)	A(%)
St 35/E235	1.0308	480	6	420	10
St 45	1.0408	580	5	520	8
St 52/E355	1.0508	640	4	580	7

Grade	Cold Finished (Soft)(BKW)			Annealed (GBK)		Normalized (NBK)
Grade	Rm(Mpa)	ReH (Mpa)	A(%)	Rm(Mpa)	A(%)	Rm (Mpa)	ReH (Mpa)	A(%)
St 35/E235	420	315	14	315	25	340-470	235	25
St 45	520	375	12	390	21	440-570	255	21
St 52/E355	580	450	10	490	22	490-630	355	22