目录1.管道等级代号说明.....................................................12.缩写词说明...........................................................23、采用的主要管道器材标准(规范)........................................44、管道等级说明........................................................65.管道分支表见表－1..................................................86.管道变径表见表－2..................................................97、管道等级索引.......................................................10管道等级号:2A1.......................................................15管道等级号：2A2.......................................................20管道等级号：2A3.......................................................25管道等级号:2B1.......................................................33管道等级号:2B2.......................................................41管道等级号:2B3.......................................................48管道等级号:2B4.......................................................53管道等级号:2B5.......................................................62管道等级号:2B6.......................................................70管道等级号:2C1.......................................................77管道等级号:2C2.......................................................84管道等级号:2C3.......................................................91管道等级号:2H1.......................................................99管道等级号:2L1......................................................105管道等级号:2L2......................................................111管道等级号:2L3......................................................117管道等级号:2L4......................................................122管道等级号:3B1......................................................128管道等级号:3B2......................................................134管道等级号:3B3......................................................141管道等级号:3B4......................................................148管道等级号:3C1......................................................154管道等级号:3C2......................................................161管道等级号:3C3......................................................167管道等级号:3H1......................................................173管道等级号:3H2......................................................180管道等级号:3H3......................................................187管道等级号:3H4......................................................194管道等级号:3H5......................................................201管道等级号:3H6......................................................208管道等级号:3K1......................................................215管道等级号:3K2......................................................221管道等级号:3K3......................................................228管道等级号:5B1......................................................234管道等级号:5B2......................................................240管道等级号:5B3......................................................247管道等级号:5B5......................................................254管道等级号:5F1......................................................260管道等级号:5H1......................................................266管道等级号:5H2............................................
