... -E Material:cs,alloy steel, ss Qualification:ISO9001,API,CE size 1/2" to 24" ASME B16 ... 900Lbs, 1500Lbs, 2500Lbs, /PN6,PN10,PN16,PN20,PN25,PN40/ Class A, B, C, D, EstandardASME B16.5, ASME ... Pipline equipments from AQSIQ , passed the Authentication of API and became a member of first – grade supply ... Flanges(GOST12821-80); Steel Butt-Welded Flanges GOST12821-80Pressure Class:PN=0.6--PN10,0 (100 /2)SIZE ...