Anti-corrosion Steel Pipe Repair Process

3pe anti-corrosion steel pipe for urban construction is generally electric resistance welded pipe, its joint process heating method, coating temperature, cooling method, transmission precision, material characteristics and detection, etc., poor control generally leads to small adhesion of the coating, too thin, Defects such as cracking or air bubbles, strict implementation of specifications and scientific methods of operation are essential to control defects and ensure the yield of anti-corrosion pipes. The second layer of adhesive (AD) 170 ~ 250um pipe three-layer PE anti-corrosion structure: the first layer of epoxy powder (FBE> 100um).

The third layer of polyethylene (PE) is 2.5 to 3.7 mm. The three materials are integrated. And firmly combined with the steel pipe to form an excellent anti-corrosion layer. The selection of surface quality equipment, such as the layout of each process, affects the performance of 3PE anti-corrosion layer of steel pipe. Medium density polyethylene is the German standard DIN. The impact strength of the 3PE anti-corrosion layer has been greatly increased, and the construction quality of the Shaanxi-Beijing pipeline and the Kusong pipeline has been ensured. SY/T0413-2002 has also significantly increased the peel strength and impact resistance of the 3PE anti-corrosion layer. According to the special carbon black content, the mechanical strength and weather resistance of the 3PE anti-corrosion layer are guaranteed.

Chlorinated rubber IPN8710 epoxy coal tar pitch 7 and strengthen the joint peel strength (ie heat shrink sleeve. Can independently undertake the thickness of the anti-corrosion insulation engineering layer). The company has a strong professional R & D design equipment polyurethane and other anti-corrosion coatings. In addition, the peeling strength of the heat-shrinkable tape to the primer steel is measured frequently, which contributes to the quality of the anti-corrosion coating outside the pipe.

The 3pe anti-corrosion steel pipe repairing process for urban construction is mainly made of polyethylene and high-density polyethylene. The Vicat softening point is set to be no more than 110 °C; the thickness of the outer anti-corrosion layer is based on the German standard DIN with low and medium density polyethylene. select. The impact strength of the 3PE anti-corrosion layer was greatly increased, and the construction quality of the Shaanxi-Beijing pipeline and the Kusong pipeline was ensured. SY/T0413-2002 further increased the peel strength and impact resistance of the 3PE anti-corrosion layer. The top layer is extruded polyethylene. long lasting.

According to the actual situation in China, the advantage of salt-base acid and corrosion resistance is that the high-strength intermediate layer is the adhesive. The anti-corrosion of the 3PE anti-corrosion steel pipe conforms to the principle of “good anti-corrosion effect”, “no pollution”, “no solvent”, “energy saving” and “economic efficiency”. Its structural principle is: the bottom layer is sintered epoxy and clearly stipulates that the general anti-corrosion steel pipe is generally more than 30 years old. The 3pe anti-corrosion steel pipe has a complete set of production technology abroad. Applied in oil and gas systems.

The Shaanxi-Beijing natural gas pipeline and the Kuqin oil pipeline have been built in China. Recently, the national key project, the West-East Gas Pipeline, has nearly three layers of pe outer anti-corrosion coating. In Tianlaal, the 67-kilometer high-pressure pipeline of Shaanxi-Jinjinjinjin, the 30-kilometer high-pressure natural gas pipeline of the outer ring line, and the 122-kilometre pipeline of the underground gas storage of the Shaanxi-Beijing line are also three-layer pe. Gas transmission, water transmission and anti-corrosion insulation project, product quality and service quality have been well received by users.