What is Cold Rolled MS Pipe?

MS cold rolled pipe starts as a steel strip or coil. We roll it into a pipe shape and weld it while the metal is cold. This is different from hot rolled pipe. In that process, forming happens at high temperatures above 900°C.

Temperature changes the result. Cold forming makes a cleaner surface with exact dimensions and the absence of a mill scale. Steel does not shrink in strange ways because it is already cool. Cold working makes the material tough through strain hardening. It costs more money. Machines need massive force to shape cold steel. The lines run slower. Mild Steel Cold rolled pipes are worth the cost when you need precision.

Specifications of MS Cold Rolled Pipes

Our cold rolled MS pipe specifications consist of standards, materials, types, dimensions and other information:

Specification Details
Standards ASTM A513, EN 10305-3, IS 4923, JIS G3445
Material Mild Steel, SPCC, SAE 1008/1010, DC01/DC03
Type ERW Cold Rolled
Shape Round, Square, Rectangular
Size (Round) 10 mm to 100 mm OD
Size (Square) 12 × 12 mm to 80 × 80 mm
Size (Rectangular) 15 × 10 mm to 100 × 50 mm
Wall Thickness 0.8 mm to 3.0 mm
Length 6 metres standard (custom lengths available)
Surface Finish Bright, Oiled, Phosphated

Chemical Composition of MS Cold Rolled Pipes

Typical chemical composition for cold rolled mild steel (SPCC/DC01 equivalent) has been given in the table below:

Element Composition (%)
Carbon (C) 0.12 max
Manganese (Mn) 0.60 max
Phosphorus (P) 0.045 max
Sulfur (S) 0.045 max

Mechanical Properties of MS Cold Rolled Pipes

Mechanical properties for cold rolled MS pipe show its high tensile and yield strength:

Property Value
Tensile Strength 270 – 410 MPa
Yield Strength 140 – 280 MPa
Elongation 28% minimum
Hardness 65 HRB max

Applications of MS Cold Rolled Pipes

Cold rolled MS pipes serve 3 major applications where surface finish and precision matter:

Furniture

Metal furniture frames and components are the biggest market for cold rolled MS pipes. Office chairs, school desks, hospital beds, shelving systems and display racks all use these pipes. The smooth surface takes powder coating. Tight tolerances ensure parts fit together during assembly. Round, square and rectangular sections give designers flexibility in creating aesthetically pleasing furniture.

Automotive

Exhausts and seat frames use our pipes. Structural parts and chassis bits also need them. Constant wall thickness helps with welding in factories. High strength allows for thinner walls and saves fuel.

General Fabrication

Exercise equipment, trolleys, carts, agricultural implements and machine guards use cold rolled pipes where appearance counts. The precision dimensions reduce fitting problems during fabrication. Welding produces cleaner joints on the smooth surface. Any application visible to end users benefits from the better finish quality.

Cold Rolled vs Hot Rolled MS Pipe

Here is how cold rolled and hot rolled MS pipes compare:

Feature Cold Rolled Hot Rolled
Surface Finish Smooth, clean Mill scale, rough
Tolerances Tight Wider
Strength Higher (work hardened) Standard
Cost Higher Lower
Best For Furniture, visible parts Structural, hidden use

Choose cold rolled when surface quality and dimensional accuracy matter. Go hot rolled when cost is the priority and the pipe will be hidden or painted over anyway.

Frequently Asked Questions

  • What is the difference between cold rolled and cold drawn pipe?

    The main difference between cold rolled and cold drawn pipe is that cold rolled pipe is made from a flat strip and a cold drawn pipe is pulled through a die. A cold rolled pipe typically refers to ERW pipe. Cold drawn usually means a seamless pipe drawn for tighter tolerances.

  • Can cold rolled MS pipe be bent?

    Yes, cold rolled MS pipe bends well for furniture and fabrication applications. The good elongation allows bending without cracking. Use a mandrel for tight radius bends to prevent wrinkling on the inside. The smooth surface shows any imperfections, so take care during bending to avoid marks and scratches.

  • Is cold rolled MS pipe good for welding?

    Yes, cold rolled MS pipe welds easily with standard mild steel procedures. The clean surface requires minimal preparation. MIG welding with ER70S-6 wire works well. TIG welding produces the cleanest joints for visible applications. The low carbon content ensures good weldability without preheat or special procedures.

  • What surface treatments are available?

    Cold rolled MS pipes accept various surface treatments including powder coating, painting, zinc plating and chrome plating. The smooth base surface produces excellent coating adhesion and appearance. Phosphate treatment before painting improves corrosion resistance. For outdoor applications, hot-dip galvanizing or zinc-rich primers provide long-term protection.