... be processed for inner and outer ring of spiral wound gasket. We make the inner and outer ring by punched for ... be processed for inner and outer ring of spiral wound gasket.QS have enough homemade special groover and angling machines for ... to 24150LB, 300LB, 600LBOther Sizes or standard on requestMaterials:Carbon Steel, with or without zinc coatingSS304, SS304L, SS316, SS316LOther special materials ...