... 304,304L,316L 3.Size: 1"-6",DN25-DN150 4.Standards: DIN,3A,SMS,ISO,IDF, RJT 1. ... nut,clamp,elbow,tee,cross,reducer,sight glass,manhole cover,cleaning ball,centrifugal pump,pipe holder etc...Advantage: Prompt ... China,specializes in producing kinds of sanitary valves,pipe fittings as well as OEM services over 15 ... Argon arc welding machine and so on. Stainless steel sanitary union sanitary pipe fittings