... AISI304,AISI304L,AISI316,AISI316LSurface treatment: Mirror polishing(180G,240G,400G), semi-polish, matt finishing, sandblast or picklingConnection: welded , threaded ... ,reducer,sight glass,manhole cover,cleaning ball,centrifugal pump,pipe holder etc... Advantage: Prompt quotation, competitive price, ... China,specializes in producing kinds of sanitary valves,pipe fittings as well as OEM services over 15 ...