Standard specification for hot - formed welded and seamless carbon steel structural tubing 热成型焊接与无缝碳素钢结构管标准规范
Specification for cold - formed welded and seamless carbon steel structural tubing in rounds and shapes 圆钢与型钢的冷变形焊接与无缝碳素钢结构管规范
Standard specification for cold - formed welded and seamless carbon steel structural tubing in rounds and shapes 圆形与异型冷成型焊接与无缝碳素钢结构管标准规范
The products includes : the tubes for structural purpose , fluid transportation tubes , the compo tubes , the heterogeneous tubes , the boiler tubes , tubes for hydraulic cylinders , the tubes for bearing , the tubes for petroleum well , and so on 产品品种有:结构管流体管合金管异型管锅炉管液压钢体管轴承管油井用管等。