2024-03-15 ASTM A105 threaded fittings are forged fittings made of carbon steel material, generally produced according to the American standard ASME B16.11 or the British standard BS3799 production standard. Carbon steel threaded fittings include various types such as threaded elbows, tees, cross, couplings, nipples, pipe plugs, bushings, caps, and unions etc. ASTM A105 carbon steel pipe fittings are widely used in various pipeline systems due to their superior performance and low cost.