1.seamless steel pipe 2.customized sizes available 3.standard by ISO,BV, ... 4.resonable price,high quality 5.NO MOQ Wuhan Haihong steel Co., Ltd was established on Nov. 25th, 2000 with branches ... more than 300 specifications and almost 1000 kinds of building steel structure materials with the standards of GB,API,ASTM,JIS,BS ...