Yanshan Hongbo Pipeline Engineering Co.,Ltd is a professional manufacturing enterprise of steel pipe fittings and pipeline products. Our main products are elbow,tee,flanges,cross,reducer,cap. We can according to different customer needs, respectively, making use of Chinese GB, GB/T, HGJ, SHJ, JB, U.S. ANSI, ASTM, MSS, Japanese JIS, international standard ISO design and manufacturing. The products can be used in oil field, chemcical industry, metallurgy, ship making, electricity plant, pharmacy, water factory, city construction, mechanical equipments which can meet the needs of pipe-connection.