... AND CE CERTIFICATE.we can produce many kinds of pipe bends. 45 degree socket welded elbow:Size:seamless fittings ... B2312 JIS B2313We own the advanced technology, production equipments and inspection systems, mainly manufacture elbow, tee, reducer, cap, flange, cross ... slide valves, eject valves and knife gate valves &Valve pipe fitting. Through years’ development and innovation, the company is ...