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TIANJIN DALIPU OIL COUNTRY TUBULAR GOODS CO.,LTD is a modern professional industry and trade combined enterprise, specializing in producing and trading seamless steel pipes.The main products of our company are the oil casings and oil pipelines. We not only supply our goods with many large oil fields, but also establish a long-term business relationship with the Middle East Europe, Africa and other countries around the world and co-operative very well.API 5CT oil casing, tubing, cross over, pup joint, coupling, super 13Cr API 5D  drill pipe, tubing thread protector, API 5L pipeline , alloy pipe, precision cold drawn seamless steel pipe, elbow, flange, tee, API 5L pipeline.Size:4-1/2''、5''、5-1/2''、6-5/8''、7''、7-5/8''、8-5/8''、9-5/8''、10-3/4''、11-3/4''、13-3/8''、16''、18-5/8''、20''。Steel grade: J55, K55, N80-1, N80Q, L80-1, P110, L80-3CR, 9CR, P110-13CR 13CR (super 13CR), 28CR, etc We not only supply our goods with many large oil fields, but also establish a long-term business relationship with the Middle East Europe, Africa and other countries around the world and co-operative very well.