Cangzhou GUYUAN STEEL PIPE CO.,LTD is a leading manufacturer of Carbon Steel ,Alloy Steel Butt Welded Pipe Fittings (including Elbow, Straight and Reducing Tee and Cross, Concentric and Eccentric Reducer, Cap ) and flange according to ASME ,DIN and JIS standard. As a supplier of high quality Pipe Fittings, the company not only concentrates on production and quality ,but also focuses on sales and service. So we build good reputations among our clients.