Forged pipe fitting astm b16.11 mss- sp-83 Thread fittings /socket weld fittings Cl3000 cl6000 cl9000 Coupling + Plug + Elbow + Cross + Tee + End cap + Nipple + Union + Material a105, a350 lf2 a182 f304, f304l, f306, f316l, f304h, f309s, f309h, f310s, f310h, f316ti, f316h, f316ln, f317, f317l, f321, f321h, f5 f9 f11, f22, f91, f347, f347h, f904l Astm a312/a403 tp304, tp304l, tp316, tp316l