gost-12821-flange-dimensions-WELD-NECK-FLANGE-PN25-2.5Mpa参考标准规范

HEBEI HAIHAO GROUPISO,ABS.CE/PED APPROVEDHHDMengcun,Cangzhou,Hebei,ChinaProfessional Steel Piping SolutionHAIHAO GROUPwww.haihaopiping.comEmail:sales@haihaogroup.comGOST /TOCT 12821 Welding neck flange Dimensions.PN25-2.5Mpa001n Or8.Od0d10D200PN25-2.5MpaDimensions in mmDn,MMD,MMD1,MMd,MMDm,MMDn,MMd1,MMb,MMh4,MM$g15956514301912143340.79201057514382618143440,9725115851445332514361.18321351001856393116431834014511018644638164542,19501601251876584917452,786518014518967766195083.7180195160181109078195284.441002301902213211096215886.5112527022026160135121236589.41150300250261861611462568812.522003603102624522220227751217.442504253703030027825429751224,403004854303035233030332801633.293505504903340638235136851646.5740061055033464432398401001664,8150073066039570535500441002088.91600840770396706366004911520123.708001075990458748267905513524213.9010001315121056108410289925915028312.12120015251420561288122811926216032387.50