Toleraance of size: ±0.05mm(outer diameter). 
OD: 21mm~416mm
Wall thickness: 0.8mm~20mm
Technique: Cold drawing
Standard: ASME SA192/SA179, GB/T8162, GB/T8163, GB/T3639, DIN2391-2
Steel material: 20#(AISI 1020/DIN1.0402 C22), 45#(ASTM 1045, DIN45), 20Cr, Q345B, etc
We are professional manufacturer of cold drawn seamless steel pipe in China. Our seamless steel pipe with very high precision of size
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