A cold drawn seamless pipe uses physical forces to stretch the raw material, like stainless or carbon steel, and does not involve welding. It is well-suited to high-pressure oil and gas, petrochemicals, and automotive applications
Manifest Alloys is one of the front-running suppliers of CDS tubing in India. We pride ourselves in modern production, testing, and logistical capacities to deliver customised cold drawn mechanical tubing to meet unique buyer needs.
Hot rolling occurs over the material’s recrystallisation temperature, i.e., where the grain structure alters. A cold drawn steel tube gets created below it. The latter incorporates hammering and uses mandrels to fit the material through dies (often multiple times).
Both cold rolling and drawing operate at room temperature. However, drawing makes thinner shapes like wires, while rolling creates flatter products.
What are the tolerances of a cold drawn steel tube?
We maintain tolerances of +/- 0.08 to 0.5mm on a cold drawn seamless steel tube with an outside diameter of 30 to 110mm.
The straightness tolerance is 3 to 9 mm for a cold drawn hydraulic tube from 1 to 6 metres long.
A steel cold drawn tube involves piercing and rolling hot billets and passing them through a die to obtain the desired dimensions.
What are dimensional accuracy and better surface finish of cold drawn seamless pipe?
Cold rolling necessitates additional pressure, leading to higher tensile strength in a seamless cold drawn steel pipe. The tolerances are tighter since the raw material does not melt during production.
The drawing process lends a smooth, defect-free surface finish to a cold drawn J525 hydraulic tube (low-carbon steel).
Standards & Institutions
A cold drawn stainless steel pipe ranges from 1.5 to 24 inches, with outer diameters spanning 0.25 to 10 inches. The wall thickness can be up to 1.5 inches.
Tubes can assume multiple shapes and are stronger and smaller than a cold rolled seamless pipe (in diameter).