Chengdu Heyi Steel Tube Industrial Co., Ltd is the A-Grade Agent of CSST (Chengdu Iron & Steel Co. Ltd.) of Pangang Group. which is one of the largest full-range seamless steel tube manufacturers in China. We are undertake strict quality control process and is certified by API, CCS, DNV, BV, Lloyd’s Register and ABS. We are strong at holding the production resources, offer the competitive prices, and provide efficient services, and small quantity is allowed. We can supply with small quantity and classic service