welding neck flange,socket weld flange,flanges Products Range: SO, WN, Threaded, SW, Blind Flanges StandardGB9112-9131,SH3406,ANSI B16.5 ,DIN25762766,DIN2632-2638 SizeDN10-DN800 PressureNP0.6-32MP2, 150lb-1500lb Material: Stainless Steel, Carbon Steel Forming Type: Forged.