... TO DN2000 Materials: carbon steel or stainless steel pipe flange blanks Size: from 1/2" to 80 ... -ANSI B36.19, ASME B16.47 SER, B(AP1605), ASME B16, 47SER, A(MSS), ASME ... B16, 47SER, B(API605), AWWA C207, DIN2527, DIN2631, 2632, 2633, 2634, 2635Usage: connecting pipe line and keep ... to separate and check the situation of pipe line; easy to seal pipe lineApplication area: Connecting various pipelines, ...