Sanitary Fluid Fittings Sight glass Manhole cover Cleaning ball Tubular Filter Pipe holder All Semifinished product made from the round steel or precision forging, machined by CNC machines. Standard DIN,3A,SMS,RJT,ISO,IDF,DS,Macon Size 1"-6"DN10-DN20017.2-168.3 Material 304,316L (Forged) Sealmaterial NBR,Silicone,EPDM,FPM,PTFE