Material Pipe Fittings Stainless Steel Carbon Steel Alloy Steel Nickel Monel Inconel Hastelloy Copper Nickel Duplex Steel Super Duplex Steel Titanium Alloy 20 SMO 254 AISI 4130 Forged Fittings – Socket Weld and Threaded Stainless Steel Carbon Steel Alloy Steel Nickel Monel Inconel Hastelloy Copper Nickel Duplex Steel Super Duplex Steel Titanium Alloy 20 SMO 254 AISI 4130 Flanges Stainless Steel Carbon Steel Alloy Steel Nickel Monel Inconel Hastelloy Copper Nickel Duplex Steel Super Duplex Steel Titanium Alloy 20 SMO 254 AISI 4130 Filler Wire Stainless Steel Filler Wire Alloy Filler Wire Titanium Welding Wire / Rod Nichrome Wire Chromium Wire