Hengtong Tubing is one API,ISO varified manufacture of steel pipe fittings in China. The main products include elbow, tee, cross, reducer, elbow, flange, pipe cap, etc. The X-series bend pipes Hengtong Tubing produced is top in China, and widely used in big projects, like West-to-East Gas Transmission Project, many industrial areas. Lily Zheng wait for your RFQ of any kind through lily99.zheng at hotmail dot com Have a nice day.