Tianjin Sunlight Import & Export Trading Co., Ltd. is big stated own company in Tianjin which was established in 1949. Our group company has trade companies and mills in many fields, with a fixed asset of about USD16 billion. We are pleasure to introduce ourselves as professional manufacturer of seamless pipes and we can also supply good quality erw pipes, square tubes/rectangular tubes, and hot rolled/cold rolled coils as per API 5L, Astm 106, Astm A53, and Bs1387/85 standards at the most ...