structure pipe 1.Outer diameters:21-219mm 2.Wall thickness:1-22mm 3.Material: 10#/20#/45# 4.Surface: Oiled or black painte

Our products has been widly used  in petroleum, chemical industry, mechnical industry, vessel,boiler and electric power and so on, it win opinion by many customers.our products scope is:OD:21-219mm,wall thick:1-30mm.Leading products:Structural seamless steel tube:GB/T8162-2008;transportation fluid seamless steel tube:GB/T8163-2008.seamless steel pipe for boiler :GB3087-1999, high pressure seamless steel pipe for boiler: GB5310-1995; Specialised seamless steel pipe for petroleum : API5L,API5CT and so on.At the same time, we can produce steel tube according to foreign standard, such as ASTMA53,A106,A179,A192 DIN1629,DIN17175,API5LandJIS,ENstandard.our main material is 10#,20#,45#,16MN, 37Mn5,ST45.8,ST35.8,ST37.

So far,we have already exported our products to RUSSIA,JAPAN,INDIA AND IRAN,and we are trying to explore the abroad market with full efforts.By good quanlity and competitive price, it is very popular in the market.

Standard	Grade	Chemical Composition(%)							Mechanical Propertise
		C	Si	Mn	P	S	Cr	Mo	Tensile Strength(Mpa)	YieldStrength(Mpa)	Elongation %
	St35.8	≤0.17	0.10-0.35	0.40-0.80	≤0.030	≤0.25	/	/	360-480	≥235	≥25
	St45.8	≤0.21	0.10-0.35	0.40-1.20	≤0.030	≤0.25	/	/	410-530	≥225	≥21
	15Mo3	0.12-0.20	0.10-0.35	0.40-0.80	≤0.030	≤0.25	/	0.25-0.35	450-600	≥270	≥20
	13CrMo44	0.10-0.18	0.10-0.35	0.04-0.70	≤0.030	≤0.25	0.70-1.10	0.45-0.65	440-590	≥290	≥20
	10CrMo910	0.08-0.15	≤0.50	0.04-0.70	≤0.035	≤0.25	2.00-2.50	0.90-1.20	450-600	≥280	≥18

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structure tube