1.API seamless steel pipes 2.welcome customized size & OD:6-1200mm WT:1-80mm 3.SGS VOC BV IBR ISO9001 4.prompt lead time Wuhan Haihong steel Co., Ltd was established on Nov. 25th, 2000 with branches over 15 in china .We're specialized in various types of seamless steels products,which are used by the areas of petroleum, chemical industry, electricity, coal,machinery,high-pressure boilers and ...