... Socket Welding Flange, Alloy flange,Plate Flange astm a105 b16.5 carbon steel flanges ANSI Flange Size:1/2" ~ 64"(DN15 ... 's requirement.The factory has possessed 5-ton Splint Hammer, 2-meter ring rolling machine,1-ton Air Hammer, Heat-treatment equipment, sheet ... inquiry will be replied within 24 hours. astm a105 b16.5 carbon steel flanges