Cold Rolled Cold Drawn Precise Seamless Steel Pipe Steel Tube for Mechanical Making

We are professional manufacturer of cold rolled seamless steel pipe in China, our seamless steel pipe with very high precision of size.
Standard: GB/T8162, GB/T8163, GB/T3639, DIN2391-2
Steel material: 20#(AISI 1020/DIN1.0402 C22), 45#(ASTM 1045,DIN45), 20Cr, Q345B, etc
Technique: Cold rolling
OD: 21mm~416mm
Wall thickness: 0.8mm~20mm
Toleraance of size: ±0.1mm(outer diameter).
Certificate: SGS, TUV SUD, BV, ISO 9001-2011
Usage: widely used for mechanical processing, Automobile industry, hydraulic equipments
Advantages of our high precision seamless steel pipe:
1.      Smaller caliber
2.      Accept small qty order
3.      Good surface treatment
4.      The pipe with superior performance, suitable for mechanical making

OD (mm)	Thickness (mm)	OD (mm)	Thickness (mm)	OD (mm)	Thickness (mm)	OD (mm)	Thickness (mm)
Φ13.1	1.5-3	Φ35.5	1.5-7	Φ46.1	1.5-10	Φ93	1.5-15
Φ19.25	1.5-5	Φ35.9	1.5-7	Φ47.8	1.5-10	Φ19-Φ160	1.5-15
Φ22	1.5-5	Φ36.6	1.5-7	Φ49.2	1.5-10
Φ22.2	1.5-5	Φ38	1.5-8	Φ49.5	1.5-10
Φ25	1.5-6	Φ38.4	1.5-8	Φ52.3	1.5-10
Φ26.3	1.5-6	Φ40	1.5-10	Φ53.8	1.5-10
Φ27	1.5-6	Φ40.2	1.5-10	Φ57	1.5-10
Φ28	1.5-6	Φ40.9	1.5-10	Φ59	1.5-10
Φ30	1.5-6	Φ41.3	1.5-10	Φ60	1.5-11
Φ30.25	1.5-6	Φ41.6	1.5-10	Φ62.5	1.5-11
Φ30.9	1.5-6	Φ42	1.5-10	Φ74	1.5-11
Φ31	1.5-7	Φ43	1.5-10	Φ75	1.5-11
Φ32	1.5-7	Φ44.5	1.5-10	Φ76	1.5-11
Φ35	1.5-7	Φ45.8	1.5-10	Φ89	1.5-15

Chemical Composition seamless steel pipe

Material	Chemical composition (%)
	C	Mn	P	S	Si	Ni	Cu
20# AISI 1020	0.17~0.23	0.35~0.65	≤0.035	≤0.035	0.17~0.37	≤0.3	≤0.25
45# ASTM1045, DIN45	0.42~0.5	0.5~0.8	≤0.04	≤0.045	0.17~0.37	≤0.25	≤0.25

Mechanical Properties of seamless steel pipe

Steel material	Tensile Strength Mpa	Yield strength Mpa	Elongation %	Hardness	Straightness
20#	≥510	≥245	≥25	≤156HB	0.3~1.0
45#	≥647	≥355	≥16	≤HRC62	0.3~1.0