... Socket Welding Flange, Alloy flange,Plate Flange astm a105 b16.5 carbon steel flanges ANSI Flange Size:1/2" ~ 64 ... or as the customer's requirement.The factory has possessed 5-ton Splint Hammer, 2-meter ring rolling machine,1- ... the manufacturing-Raw material inspection, cutting, heating, gorging, heat treatment, machining, drilling, marking, washing, final inspection, packing, delivery. After Sales ...