astm a181 flange 1.SIZE:1''-72'' 2.ISO9001:2000,QS-9000 3.DIN,ASME,JPI,EN,BS,UNI,GOST,JIS,etc Carry our high sincerity, we welcome every customer and support you with our consistent quality and moderate price, hope we establish long cooperation relation.Nameastm a181 flangeSize: 1''-72''thick: sch40,sch80Pressure Class 150Lbs, 300Lbs, 600Lbs, 900Lbs, 1500Lbs, 2500Lbs, /PN6,PN10,PN16,PN20,PN25, ...