item so, wn, thread, blind, sw , and so on material stainless/carbon/alloy/copper standard ansi din ba etc size 1/2"-100" FORGED FLANGES SOCKET WELDING, WELDING NECK, THREADED, LAP JOINT, BLIND, SLIP ON; DIN2527, DIN2502/2503/2573/2576, DIN2565/2566, DIN2627/2628/2629, DIN2630/2631/2632/2633/2634/2635/2636/2637/2638, DIN2641/2642/2655/2656, DIN86029/86030, BS4540, BS10 STANDARRDS ANSI DIN BS ...