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Heat shrinkable sleeve

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Pipe connection parts and other coatings on-site welds

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Pipe connection parts and other coatings on-site welds

Release date:2017-02-23 The author: Click on:

In the pipe connection parts and welds should be used thick layer of glue, base film thin mouth, construction methods with the tape. The gap between the mouth and the original coating should be not less than 100mm. When filling the mouth, you should remove the loose part of the pipe end of the coating, the thickness of more than 3mm of the coated polyethylene layer should be cut into 45 ° groove, and remove the weld area of the welding, burr and other dirt, fill Mouth should also be dry. Before the mouth wrapped around the tape, the first part of the interface wrapped around a layer of tape for additional protection, and then by 50% tape tape width of the normal tape construction.

With ordinary anti-corrosion tape filling, in the station at the steel pipe and the layers of tape should be painted with glue layer compatible primer, so to ensure that the tape seal waterproof. The peel strength should be equal to or greater than 8N / cm. The bottom is usually made of adhesive tape glue. Such as the North China Oilfield Design Institute using the production of tape when the intermediate product "noodle" made a mouth test, fill the layer between the application of "noodle", so coated with glue and glue is compatible with the quality of the guarantee. The so-called compatible primer refers to the adhesive layer after the adhesive layer is not bad, not hard, not brittle, with the same peel strength. Wrapping irregularities and reducer tee is the most difficult part of the winding, usually with the appropriate width of the tape wrapped in cigarettes three-way frame, and then with a narrow band (25 ~ 50mm) from one end wrapped around all the previous bandage Of the tape. Three-way bearing was cross when the cross was to be wound to ensure a good seal. Heat shrinkable sleeve

The so-called cigarette type refers to the straight seam way, can also be cut into the corresponding size and shape, was a straight seam paste in the special-shaped pieces. Each wound is finished to carry out the appearance of inspection, requiring polyethylene with a smooth surface, tight adhesive knot, no wrinkles and other defects.


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