Wholesale pipeline joint coating anti-corrosion heat shrink tape

Wholesale pipeline joint coating anti-corrosion heat shrink tape

Construction and installation guide for heat shrink tape: 1. Use a cloth to remove the soil from the pipeline connection head and wipe it clean. 2、 Use spray to bake the pipe ports, drive away moisture, and ensure that the pipe end faces are dry. 3、 Two people work together to pull one end of the heat shrink tubing from the bottom to the other side, and center the shrink tubing at the bottom. 4、 Bake the middle of the shrink band until it melts by about 100-150mm, and two people pull it upwards to stick the middle of the shrink band to the bottom of the pipeline.
5、 Heat the middle part of the adhesive layer on one side of the shrink band to melt it, pull it upwards from the bottom of the pipeline, and make one end stick to the upper part of the pipeline.
6、 Heat the middle part of the adhesive layer on the other side of the shrink band to melt it, pull it upwards from the bottom of the pipeline, and make one end stick to the upper part of the pipeline, overlapping with the upper part of the other shrink band. The overlapping part at the two ends is required to be 80-150mm. 7. Heat and melt the adhesive layer of the fixing plate, align the fixing plate with the interface of the shrink band, and press it with a roller until the fixing plate is tightly attached to the pipeline. 8、 Use a spray to bake the adhesive layer inside one side of the shrink band from the bottom of the pipeline upwards, melting it and making it adhere to the pipe wall. Then operate the other side of the shrink band to make it adhere to the pipe wall. 9、 Repeat the above operation on the other side of the pipeline. 10、 Bake the outer side of the shrink belt, and heat it from the middle to the outside during operation. Heat the shrink belt along the circumference of the pipeline to shrink it. If bubbles or wrinkles appear during the shrinkage process, use a pressure roller to flatten it to eliminate the bubbles. 11、 After the shrinkage is completed, the heat shrink tape and fixing plate should be carefully inspected to ensure that the hot melt adhesive overflows from all sides. If there are defects, they should be heated in a timely manner and flattened with a pressure roller.

Heat shrink tape is a new type of anti-corrosion sealing method that uses heat shrink materials for pipeline anti-corrosion. It overcomes the shortcomings of traditional methods of joint coating anti-corrosion, sealing and insulation, and has the following characteristics: chemical corrosion resistance, aging resistance, weather resistance, flame retardancy, easy transportation, simple construction, good sealing performance, high heat transfer efficiency, etc. It can be widely used for joint coating and anti-corrosion of various metal pipelines. The heat shrink tubing produced by our factory is made of polyethylene as the substrate, extruded and molded, and has a special "memory" effect through high-energy radiation. When the expanded and shaped finished product is heated to a certain temperature, it can shrink to the size before expansion, thus achieving the physical phenomenon of heat shrinkage.

Heat shrink tape is a new type of engineering pipeline anti-corrosion, insulation and protection heat shrink product. It is a two-layer or three-layer structure with primer composed of polyethylene and hot melt adhesive. It is mainly used for engineering pipeline protection, joint repair, anti-corrosion, waterproofing and sealing.

Wholesale pipeline joint coating anti-corrosion heat shrink tape

Surface treatment of hot melt sleeve

There are two methods for rust removal at the mouth of the hot-melt casing: sandblasting and manual electric angle grinder. Sandblasting rust removal is preferred for roads and construction sites with good terrain and easy access to vehicles. Manual electric angle grinder rust removal is used for difficult construction areas. The surface treatment quality of sandblasting rust removal pipe mouth should reach Sa2.5 level in GB8923 "Rust Grades and Preparation Grades of Steel Surfaces before Coating". The quartz sand used for sandblasting and rust removal should be dry, with uniform and impurity free particles, and a particle size between 2mm and 4mm. The working pressure for sandblasting should be between 0.4Mpa-0.6Mpa. Manual electric angle grinder rust removal should reach the standard st3.0 level

Start the air compressor, adjust the air pressure, and open the sand inlet valve to start sandblasting operation. There should be an oil-water filter at the outlet of the air compressor, and the compressor displacement should not be less than 6m3/min.

Pipeline anti-corrosion heat shrink tape is composed of radiation cross-linked polyethylene substrate and special hot melt sealant, which has the function of "shape memory". After heating, use the force of shrinkage to evenly squeeze the melted hot melt adhesive into the weld joint to form a perfect sealing surface, tightly shrink and wrap around the pipeline interface or anti-corrosion components.