... .9,DIN,JIS,CertificateCE,ISO9001-2008,ANSIDelivery Time15~20days ... TreatmentShot blasted, rust-proof black oil,Black painting,anti-rust varnish,anti ... manufacture elbow, tee, reducer, cap, flange, cross, nipple, socket fitting, expansion ... and knife gate valves &Valve pipe fitting. Through years’ development and innovation ... petroleum, chemical, electric power, iron and steel, shipbuilding, water treatment ...