Precision seamless steel pipe advantage

1. 1. High precision, saving the loss of mechanical processing users.
2. 2. Many specifications, wide range of applications.
3. 3. Cold rolled products have high precision, good surface quality and good straightness.
4. 4. The inner diameter of the steel pipe can be made into hexagonal shape.
5. 5. The steel pipe has better performance and the metal is relatively dense.

Precision seamless steel pipe chemical composition

Grade	chemical composition %
	C	Si	Mn	S	P	Cr
10#	0.07-0.13	0.17-0.37	0.35-0.65	≤0.035	≤0.035
20#	0.17-0.23	0.17-0.37	0.35-0.65	≤0.035	≤0.035
35#	0.32-0.39	0.17-0.37	0.35-0.65	≤0.035	≤0.035
45#	0.42-0.50	0.17-0.37	0.50-0.80	≤0.035	≤0.035
40Cr	0.37-0.44	0.17-0.37	0.50-0.80	≤0.035	≤0.035	0.08-1.10

Precision seamless steel pipe mechanical property

standard	Grade
GB/T3639-2000		Cold Work/Hard (BK)		Cold work/Soft BKW
GB/T3639-2000		strength of extension	stretch	strength of extension	stretch
		σb(MPa)	δ5(%)	σb(MPa)	δ5(%)
GB/T3639-2000
GB/T3639-2000	10#	≥410	≥6	≥375	≥10
GB/3077-1988	20#	≥510	≥5	≥450	≥8
GB/T3639-2000	35#	≥590	≥4	≥550	≥6
GB/T3639-2000	45#	≥645	≥4	≥630	≥5
GB/T3639-2000	40cr	≥784	≥12
GB/T3639-2000	37Mn5	≥784	≥12

Precision seamless steel pipe specification

Product Name	Precision Seamless Steel Pipe
Technique	Hot Rolled/Cold Rolled/Cold Drawn
Surface Treatment	Black Painted, Galvanized, Natural, Anticorrosive 3PE coated,polyurethane foam Insulation
End	Bevel end(>2"), Plain (≤2"),with plastic cap, with screwed and socket
Material	10# 20# 45# Q345 16Mn 15CrMo 30CrMo 1Cr5Mo 40Cr 42CrMo S235JR S355JR ST37 ST42 ST52 ST35 A106 A53 A179 1020 T5 42CrMo4 25CrMo4 4130 4140 15XM etc.
Standard	ASTM A106 ASTM A53 ASTM A179 ASTM A210 ASTM A213 GB/T3639 DIN 2448 DIN1629 DIN1626 DIN2391 DIN2444 EN10025 etc.
Outside Diameter	10mm-1020mm or as your request
Length	Single random length/double random length 5m-14m 2-12m
Thickness	2mm-80mm or as your request
Application	Oil pipe line, Drill pipe, Hydraulic pipe, Gas pipe, Fluid pipe, Boiler pipe,Conduit pipe, Scaffolding pipe pharmaceutical and ship building etc.