Free-Cutting Case Hardening Steel (Formerly Opel 1112)
Document status: [ Revised ]
Free-Cutting Heat Treatable Steel (Formerly Opel 1136)
Document status: [ Revised ]
Free-Cutting Heat Treatable Steel (Formerly Opel 1146)
Document status: [ Revised ]
Malleable Cast Iron (Formerly OPEL 11 M)
Document status: [ Revised ]