Q235 Q345 Cold Rolled Steel Coil Steel Coil

Specification:

Material: SPCC SPCD SPCCDT ST13 BLC BLD CR1 CR2 ST37-2 08AL 08YU DC01 DC02 DC03

Thickness: 0.2-4mm

Thickness tolerance: +/- 0.25%

Width: 600-2000mm

Surface treatment: Bright annealing, black annealing as your need

Surface structure: Zero spangle / minimized spangle / regular spangle/ big spangle

Type of coating: Hot dipped galvanized or electric galvanized

Zinc coating: Z60-275g/m2

ID coil: 508mm or 610mm

Coil weight: 3-8 MT per coil

Application: Industrial panels, roofing and siding for painting

Package of Cold Rolled Coil: Strapped with min three strapping strips, covered by anti-water paper and plastic film, fixed on the iron or wooden pallets by strapping strips and covered by plastic bag to prevent damage from transportation.

Process of Cold Rolled Coil:
Pickling: To clean the dust and rust points on the surface.
Cold Rolling: Digital rolling control system produces minimum thickness tolerance, helps to prevent twist and improve straightness.
Slitting:  Precise slitting machinery helps control the best width tolerance and avoid camber or cracker. 

Also we can make round or sharp edge with additional process and special machines.
Heat treatment: Advanced annealing, tempering and hardening techniques will help to produce proper mechanical property of the products to insure our client's usage with minimum harm to natural environment.