Cangzhou Ronald Pipeline Equipment Manufacturing Co .Ltd specializes in producing and trading seamless steel pipes.Its main products: oil casing, tubing, pipeline, coupling, pup-joint, fluid pipes, structural pipes, and API 5CT, API 5L, ISO9000 ensured our quality. 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.