1. material: steel/stainless steel 2. process: forge,cast, weld 3. wt: SCH5-80 4. ... ,WP11,WP12,WP22,WP5,WP9,WP913.stainless steelA403WP304/304L;A403WP316/316L;WP321;WP347;WPS312544.duplex&double duplex stainless steelASTM A815;UNS S31803;UNS ... ,power,gas,metallegy,shipbuilding,construction water and nuclear power etc. steel /stainless steel pipe reducer