Tianjin Sanjiang Tongda High-Pressure Piping Trade Corporation Limited is engaged in selling all kinds of pipes. We have the long-term and stable business relationship with Baosteel Group Corporation, Anshan Iron and Steel Group Corporation, Tianjin Iron & Steel Corporation Limited, and Baotou Iron & Steel (Group) Co., Ltd. We can supply various kinds of pipes, such as stainless steel pipes, structural pipes, conveying liquid pipes, mild and low-pressure boiler tubes, oil cracking pipes, special pipes for chemical fertilizers, and alloy steel pipes. Our company adopts ISO9001:2000 international quality system. The materials and standard of our products are as follows: Materials: 10#, 20#, 35#, 45# 40Cr, 16Mn, X42, X52, X62, X70, 20Cr, 40Cr, 35CrMo, 42CrMo, 12CrMoV, 10CrMo910, 12Cr1MoV and 15CrMo Standards: GB/T8162-1999 structural seamless steel tubes, GB/T8163-1999 fluid seamless steel pipes, GB/T3087-1999 boiler tubes, and GB/T5310-1999 high-pressure boiler seamless steel pipes American standards: ASTM A 106, ASTM A 53, ASTM A179, ASTM A192, and ASTM A519