20# 45# Precision Steel Pipe Cold Drawn Astm A519 Pipe 40Cr

Precision pipe is a seamless steel pipe with high precision and high brightness produced through cold drawing or cold rolling processes. Its inner and outer diameter dimensions can be precise to within 0.2mm, ensuring bending and torsional strength while also being lightweight, making it widely used in the manufacturing of precision mechanical parts and engineering structures. It is also commonly used for producing various conventional weapons, barrels, shells, bearings, etc.
We have 4 advanced hot-rolled seamless steel pipe production lines and 4 cold-drawn seamless steel pipe production lines, which can produce steel pipes of various specifications and materials. We can meet your various needs, and provide high-quality products and the most competitive prices. Our products sell well in hundreds of large and medium-sized cities in China, and are exported to India, Thailand, Vietnam, Iran, Turkey, Brazil, Egypt and other countries.

Characteristics of precision pipes:

1. Smaller outside diameter.
2. High precision for small batch production.
3. Cold drawn finished products have high precision and good surface quality.
4. The cross-sectional area of the steel pipe is more complex.
5. Steel pipes have superior performance and dense metal.

Common Material:

10#, 20#, 35#, 45#, 20Cr, 40Cr, 20CrMo, 16mn, 27simn, 304, 201, 310s, quality carbon structure steel

Tolerance grade: allowable deviation of standardized outer diameter

D1 ±1.5%   minimum±0.75 mm

D2 ±1.0%   minimum±0.50 mm

D3 ±0.75%  minimum±0.30 mm

D4 ±0.50%  minimum±0.10 mm