Construction steps, precautions and physical properties of PVC-U drainage pipe

First, the construction method

PVC drain pipe connection methods are mainly sealing rubber ring, bonding and flange connection 3 kinds.

1. PVC drain pipe diameter greater than or equal to 100 mm of the pipe like rubber ring interface;

2. PVC drain pipe diameter less than 100 mm of the pipe is generally used adhesive joints, some use live joints;

① First use sandpaper to the outside of the PVC pipe end and the inside of the pipe fitting socket hair, and then use a clean rag to polish the inside of the socket, then apply glue, and finally insert the pipe end into the pipe fitting socket.

② And some construction workers in the construction process did not use sandpaper to polish, or polish, after not using hair to wipe the dander clean, which makes the village in the bonding process left a defect, because the pipeline will continue to use in the future, and withstand water pressure, for a long time will not crack, resulting in the phenomenon of flowing water.

3. PVC drain pipe pipe in the sewer or other pipes, generally use metal pipe, then the plastic pipe and metal pipe using flange connection. Valve before and after the connection with the pipe are also connected by flange.

PVC-U drain pipe connection steps:

pipe socket connection should be strictly according to the following procedures:

① before bonding connection pipe socket, pipe fittings socket wipe clean;

② measuring the depth of the socket in the pipe port mark;

③ brush adhesive, first coated socket after coating, coating evenly;

④ alignment direction, once inserted into the scribing part, rotation 1/4 turn;

⑤ will be in the socket residual adhesive wipe;

④ good adhesive pipe to stand until the interface curing.

the safe use of adhesives should abide by the following provisions:

① Adhesives, detergents should be opened and used, non-operators shall not use;

② bonding point shall not have open flame, ventilation should be good;

③ in -10 ℃ below the construction should not be, bonding point shall not be baked with fire.

Second, installation precautions

1. PVC drain length according to the actual measurement, and combined with the size of each connecting pipe to determine layer by layer.

2. PVC drain pipe sawing tools should be fine tooth saw, cutter and cutting machine and other tools. Fracture should be flat, no deformation at the section.

3. PVC drain pipe to be bonded socket part can be used medium file into 15~ 30 groove. The length of the groove is generally not less than 3m, and the thickness of the groove should be 1/3 to 1/2 of the thickness of the pipe wall. After the groove is completed, the debris should be removed.

4. After the socket interface of the PVC drain pipe is connected, the extruded adhesive should be scrubbed with cotton yarn or dry cloth dipped in a little acetone and other cleaning agents. According to the performance and climatic conditions of the adhesive until the interface is cured.

5. The curing time of the PVC drain pipe should be appropriately extended during construction in winter.

Third, physical properties

Physical and mechanical properties of PVC-U drainage pipes Item requirements Test method Vicat softening temperature ☺ 79 ℃ GB/T8802-2001 Longitudinal retraction rate ≤ 5% GB/T6671-2001 Tensile yield strength ☺ 40MPaGB/T8804.2-2003 Drop weight impact test TIR ≤ 10% GB/T14152-2001 The production standard of AD PVCU drainage pipes adopts national standards, so the quality is guaranteed and can meet the testing requirements. Welcome to contact Hubei AD Building Materials Co., Ltd. to buy AD brand PVC pipes, Yonggao brand PVC pipes, Jingjie PVC pipes.

Source: Hubei AD Building Materials Co., Ltd., welcome to share! Hotline: 17399989993