Cold Drawn Seamless Steel Pipe

Cold Drawn Seamless Steel Pipe is a high-precision seamless steel tube produced by cold drawing process at room temperature,using hot-rolled seamless pipe blanks as the base material.Through multiple drawing passes,precise dies and mandrel control,the product achieves tight dimensional tolerance,smooth surface and excellent mechanical properties.It has no welded joints,good pressure resistance,concentricity and straightness,making it widely used in precision machinery,hydraulic systems,automobiles,oil and gas industries.

Key Features

High dimensional accuracy:Small outer diameter and wall thickness tolerance,low ovality,ensuring stable assembly and matching.

Excellent surface quality:Bright,clean and smooth surface,free of scales,cracks or other surface defects.

Good mechanical properties:High tensile strength,yield strength and fatigue resistance after proper heat treatment.

Seamless structure:No weld,uniform wall thickness,strong pressure bearing capacity and good sealing performance.

Wide size range:Can be produced in small diameter,thin wall and special-shaped specifications that are difficult to achieve by hot rolling.

Main Materials

Carbon steel(10#,20#,35#,45#),alloy steel(40Cr,25CrMo4,42CrMo),stainless steel(304,316L,321),etc.

Common Standards

ASTM A53,ASTM A106,API 5L,EN 10216,EN 10305,GB/T 8162,GB/T 8163,GB/T 3639

Typical Applications

Hydraulic and pneumatic system pipes

Automobile engine oil pipes,brake pipes,fuel pipelines

Mechanical instrument tubes,shaft sleeves,precision parts

Boiler heat exchange tubes,petrochemical conveying pipes

High-pressure fluid pipelines in engineering machinery