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Cast Iron Drainage pipeline and Joint Installation Method
Cast iron pipes, fittings flexible interface installation method
W, W1-type non-flexible interface socket cast iron pipe installation methods 
First, the installation should ensure Pipes vertical cross-section, smooth, no flash burr avoid scratching rubber seals; 
Second, using a torque wrench to loosen the clamp bolts, remove the apron, set into the tube at one end, so that the intermediate flange gasket in full contact with the iron pipe section so far; 
Third, the end of the set into the other end of the tube apron complete the next turn, so that the intermediate flange gasket plane completely exposed; 
Fourth, the other on a vertical pipe flange gasket plane, the next turn of the apron reset, move to the two tubes are on the same axis; 
Five, move to clamp rubber seals of the site, making it flush with the end face of the apron; 
Six successive alternating with a torque wrench tighten the clamp bolt, should be put in place while tightening the bolts again, causing the clamp distortion. Do not use excessive force, causing the bolt slip.



W, W1 type cast iron pipe strengthen hoop installation method is mainly used to strengthen the hoop without order of the cast iron pipe clamp stainless steel parts to strengthen the interface connection, the installation method as shown.



A flexible interface cast iron pipe installation methods 
First, draw a good installed above the socket line, clearance socket ends take 5 ~ 10mm, the installation should be perpendicular to the plane of the line with the tube axis. 
Second, at the end of the first set into the socket flange gland, and then set into the sealed apron, apron edge lines aligned with the installation. 
Third, the spigot end into the socket, to keep the gasket in the socket at the same depth, in advancing the process as much as possible the insertion tube and tube socket remains on an axis. 
Four, fastening bolts should ensure uniform apron force not once fastened in place, tighten evenly to the successive one by one, until the apron uniform compression.



B-type cast iron pipe fittings flexible interface installation method 
First, draw a good installed above the socket line, clearance socket ends take 5 ~ 10mm, the installation should be perpendicular to the plane of the line with the tube axis. 
Second, at the end of the first set into the socket flange gland, and then set into the sealed apron, apron edge lines aligned with the installation. 
Third, the spigot end into the socket, to keep the gasket in the socket at the same depth, in advancing the process as much as possible the insertion tube and tube socket remains on an axis. 
Four, fastening bolts should ensure uniform apron force not once fastened in place, tighten evenly to the successive one by one, until the apron uniform compression.

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