Cold finished carbon steel mechanical tubing|tube|tubes

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Cold finished carbon steel mechanical tubing|tube|tubes

 

Hi,this is maria,thanks very much for your interesting to our products,If you want such steel tubes and pipes,or the standard is not listed above,pls do not hesitate to contact me at once.pls tell me,it's my honor to service you!

Tel:+86-18921988727

 

Zhangjiagang Huadian Import & Export Co., Ltd is a company based in China, we have two factories, one factory manufactures steel tubes and the other factory produces power station equipment.

Jiangsu Dehai Group (Parent Company)
Zhangjiagang Huadian Im &Ex Co., Ltd (Subsidiary)
Zhangjiagang Huagang IndustrialCo.,Ltd (Factory)	Specializes in the production of cold-drawn/cold-rolled precision seamless steel tubes,such as bright oil tubes etc.
Zhangjiagang Huadian Power  Equipment Co.,Ltd (Factory)	A manufacturer of power station boiler, industrial boiler,  waste heat boiler, refusefired boiler, biomass boiler  and the correlated pressure parts integrating the design,  manufacture, installation, repair and maintance

 

Including seamless precision tubes in our product range manufactured to DIN 2391.

 

These tubes are supplied in a seamless cold drawn and normal annealed quality, marked by the code NBK.

 

The tubes can be delivered in either oiled finish or passivated finish.

 

The tubes are manufactured from St37.4 carbon steel with a fine quality according to DIN2391 and have the following material properties.

Material	Tensile Strength Rm inN/mm2	Yield Strength in N/mm2	Elongation in %
ST37.4	350-480	235 for wall thickness less than or equal to 16mm	25

 

Each tube is subjected to a non destructive material testing to detect faults and improperties.

 

Tubes are in fixed lengths of 6 metres and can be marked over the entire length according to DIN 2391.

 

This designation also serves as proof that the above mentioned tests have been carried out and replaces a test report according to EN10204.If required, customers can be supplied with an inspection certificate 3.1B according to EN10204.

 

Brand	Chemical Composition(%)
	C max	Si max	Mn	P max	S max
St 35	0.17	0.35	≥0.40	0.025	0.025
St 45	0.21	0.35	≥0.40	0.025	0.025
St 52	0.22	0.55	≤1.60	0.025	0.025

 

Mechanical Properties(Mpa)

Steel     grade	BKW		BK		BKS			GBK		NBK
	Tensile  Streng th    ReH  N/mm  min	Elon gati on %  min	Tensile  Streng th  ReH  N/mm  min	Elon gati on %  min	Tensile  Streng th  ReH  N/mm  min	Yield  streng th  Rm  N/mm  min	Elon gati on %  min	Tensile Streng th  ReH  N/mm  min	Elon gati on % min	Tensile  Streng th  ReH  N/mm  min	Yield  streng th  Rm    N/mm  min	Elon gati on %  min
St35	480	6	420	10	420	315	14	315	25	340-470	235	25
St45	580	5	520	8	520	375	12	390	21	440-570	255	21
St52	640	4	580	7	580	420	10	490	22	490-630	355