1,coupling forging 2,SIZE:AS YOUR REQUIREMENT 3,WEIGHT: ... at sight 5.FOB : Shanghai 1. Product infoMaterial20CrMn,42CrMo,20#,45#etcCurrent customerEDCAST INTERNATIONAL INC(Canada). ShangHai Power Station ... cases . 2, material of steel type of 15#,20#,25#,30#.35#,40#,45#,46#,etc.according to customers ... .productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); carbon steel forged coupling