Tianjin United Steel Pipe Co., Ltd is a professional ERW steel pipe manufacturer located in Tianjin, China. Our company invested in advanced high-frequency straight seam resistance welding machines, vertical cutting machines, on-line and off-line nondestructive testing machines, chamfering machines, hydrostatic testing machines, and test & inspection center and etc. Our main products include casing pipes, tubing and clotted liners for oil and gas exploitation, conveying pipelines, shaft tubes, structural pipes and etc. The annual production capacity of United Steel is over 500,000 tons. All the products are produced strictly under either domestic or international standards, such as API SPEC 5CT, API SPEC 5L, JIS G3444, JIS G3452, ASTM A53/A53M, AS/NZS1163, AS/NZS1074, EN10217, EN10219, EN10255, GB/T9711, GB/T3091, GB/T13793, GB/T19830, YB/T5209, SY/T5768 and etc. Our products are widely used in various fields, such as oil and gas exploitation, vessels and vehicles manufacturing, water and electricity industries, environmental protection, machinery and equipment building, and infrastructures. United Steel pays attention on quality and safety management, and obtained certificates of ISO9000 Quality Management System, ISO14001 Environmental Management System, BS OHSAS18001 Occupational Health and Safety Management System. Our company also received production certificates, such as American Petroleum Institute API certificate, UL certificate, CE certificate, JIS certificate and the Manufacturing License of Pressure Pipeline. United Steel executes innovation management comprehensively, and enhances the overall enterprise management with innovative ideas and methods. United Steel emphasizes talent cultivation and technology research and development. We believe the strategy of encouraging talent cultivation and technical innovation will lead to a long-term business growth in the future.