This standard has stated the dimension, outline, weight, technical specifications, testing method, test rules, packaging, labels and quality certificates of seamless steel tubes for structural purposes.
It is applicable to seamless steel tubes for common structures and mechanical structures.
This standard has stated the dimension, outline, weight, technical specifications, testing method, test rules, packaging, labels and quality certificates of seamless steel tubes for structural purposes.
It is applicable to seamless steel tubes for common structures and mechanical structures.