... Certificate and TUV Certificate.Our major products are as followings:1. FORGED STEEL FLANGES:Type: Weld-neck, Blind, Socket, threaded, Lap ... , 2634, 2635, 2636,2638,2641,2642 / EN1092-1 TYP01-34 ANSI B16.5 1/2inch-24inch CLASS 150-2500 ANSI B16.47 ... , 47SER,A(MSS), ASME B16, 47SER, B(API605) API 6A 1-13/16inch-30inch CLASS 2000-20000 AWWA C207 4inch-144inch ...