Butterfly valve Strictly made in the standard of API; Offer OEM service ... not -API, cannot be exported.If you want to get no API products, tell me, the prices will be cheaper. About ... element,Mechanical properties, Flaw detection and other Quality Report for Valve box, case, crank, shaft, large gear ring.About Service: ... please feel free to send us your inquiry. Mechanical part,Butterfly valve,Pump part