Socket welding fittings according to ANSI/ASME Sandvik holds a large stock of stainless, forged, socket welding fittings in F304/304L and F316/316L (dual marked and certified). Sandvik's socket welding fittings are according to ASTM A182, ASME B16.11. Socket weld unions are according to MSS SP-83. Sandvik's ASME 3000 lbs forged, socket weld fittings are white pickled with hardness according to NACE MR0175, IC according to ASTM A262E and PMI tested. Sandvik socket weld fittings are certified according to EN