Common cast iron drainage pipe is unhealthyWtype、Flange mechanicalAtype、(pair)Flange mechanicalBThree types, etc.，Its installation connection steps、It is necessary to collect the precautions.。
1、UnbearableWtype(Clamp)Connection step、Precautions
Wtype(Clamp)Cast iron drainage pipe is connected with stainless steel clamps，Site construction、Installation，According to the design requirements and actual situation，As needed to intercept straight pipe length，Cutting rear end surface and straight tube axis vertical，Deviation is less than2°，Gather、smooth、Incapable、Stairs、crack。
Connection step：
2、Flange mechanicalAConnection steps、Precautions
Flange mechanicalAType cast iron drain pipe adopts a sealed rubber ring、Flange、Bolted，Site construction、Installation，Require the socket pointing direction。According to the design requirements and actual situation，As needed to intercept straight pipe length，Cutting rear end surface and straight tube axis vertical，Deviation is less than2°，Gather、smooth、Incapable、Stairs、crack。
Connection step：
3、(pair)Flange mechanicalBConnection steps、Precautions
(pair)Flange mechanicalBType cast iron drain pipeWType straight tube、Double flange fitting、2Set of sealed rubber circles、2Set of flange、Bolted。Site construction、Installation，According to the design requirements and actual situation，As needed to intercept straight pipe length，Cutting rear end surface and straight tube axis vertical。Deviation is less than2°，Gather、smooth、Incapable、Stairs、crack。
Connection step：
Note：Graphic from the network
