astm a181 flange 1.SIZE:1''-72'' 2.ISO9001:2000,QS-9000 3. ... ,PN25,PN40/ Class A, B, C, D, EType: integral pipe flange,threaded flange,socket welding flange,welding neckflangeStandard:ISO, GB 12459-2005, ASME B16 ... before shipping.Delivery timeA.7 days if this goods is stock goods.B.30 days if this goods will be produced after ...