... the ANSI standard,DIN 2527,2573,2576,2642,2633,as well as the JIS B2220,BS4505 standards cross : carbon ... chemical equipment, heat exchanger and other fieledsTianjin Haozeshun steel trade Co.,Ltd. is an international steel enterprise, and takes "expanding market with high ... the company now has become a large-scale international steel trade enterprise. Our main products including hot-rolled steel, cold ...