Cold Rolled High Frequency Welded Steel Pipe

Cold Rolled High Frequency Welded Steel Window Section Pipe
Executive Standard: ASTM, DIN, JIS, GB
Grade: Q195-Q235

Product	Outside Diameter		Thickness
	Inches	MM	Inches	MM
Black annealed pipes	T/Z/L 0.9843-1.4960	T/Z/L 25-38	0.0236-0.0787	0.6-2.0
Bright pipes	T/Z/L 0.9843-1.4960	T/Z/L 25-38	0.0236-0.0787	0.6-2.0
Pre-galvanlized pipes	T/Z/L 0.9843-1.4960	T/Z/L 25-38	0.0236-0.0787	0.6-2.0
Cold hard pipes	T/Z/L 0.9843-1.4960	T/Z/L 25-38	0.0236-0.0787	0.6-2.0

Cold rolled steel is metal that has been made by rolling. When they cold roll steel, it is to get a better finish or more strength. Cold rolled steel is made by passing the steel through a number of rollers after the metal has cooled from initial production. The steel is reduced in thickness incrementally as it passes through the rollers. Cold rolled steels tend to have lower carbon content than hot rolled steels, making them more durable. They can also be rolled to more specific dimensions due to the lack of shrinkage that occurs with hot rolled steels. Cold rolled steels are typically rolled to have a matte appearance. They may also be painted, if it is called for, by removing the lubricants that are frequently applied prior to shipping.

The British equivalents of the Q195 grades are 15 HR and S185; American equivalent is ASTM A 366.
GB/T 700, Q195

ISO HR2(σs195)

JIS SS330(SS34)(σs205)

DIN St33

BS 040A10

NF A33

Compositions

C ≤0.12, Mn ≤0.50, Si ≤0.30, S ≤0.040, P ≤0.035

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