More detailed difference between black annealed steel pipe and hot rolled steel pipe.
One of main differences is raw materials. The hot rolled pipe’s raw material is hot rolled strip and the annealed pipe’s raw material is cold rolled annealed steel strip.
Beside the different of raw material, the application is also different. The annealed pipe widely used on furniture, such as table, chair. For the hot rolled steel pipes, one of main application is basic building structure, such as highway guardrail, scaffolding, greenhouse fence, Sports Equipment and pipeline and so on.
Sec. is used as low pressure fluid transmission pipe, for example water and gas transmission.
Third is pipeline transmission of oil and gas industry.
