St37, St45, St52 Cold Drawn Seamless Steel Pipe with Tolerance +/-0.1mm

• Customization: Available
• Type: Seamless
• Technique: Cold Drawn
• Model NO.: IR-C
• Material: Carbon Steel, Alloy Steel, Stainless Steel
• Surface Treatment: Polished
• Usage: Pipeline Transport, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Tolerance of Size: +/-0.05mm
• Outer Diameter: 18mm~416mm
• Wall Thickness: 0.8mm~20mm
• Length: 6meters, 9meters, 12meters, Random Length
• Surface: Annealed, Pickling
• Transport Package: Bundled, Wrapped, Wooden Cased.
• Specification: ASTM A213, A312, etc
• Trademark: Iron&steel
• Origin: China
• HS Code: 73041990
• Production Capacity: 100 Tons Per Month

Product Description

We are professional manufacturer of cold drawn 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).
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





Chemical Composition of 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