网上棋牌游戏

首页 > 五金工具 > 大同灵丘热缩带规格值得期待 Position : Home > Hardware Tools > Datong Lingqiu Heat Shrink Tape Specifications

Datong Lingqiu heat shrinkable belt specifications worth looking forward to

发布时间: 2019-12-29 17:36:01 发布人: 扈经理 字体大小: 【大】 【中】 【小】 Article source: hpdyffclsc Release time: 2019-12-29 17:36:01 Posted by: Manager Manager Font size: [Big] [Medium] [Small]

<p> The specifications of Datong Lingqiu heat shrinkable tape are worth looking forward to. Caution of the cathodic protection after peeling of the heat shrinkable tape. The cathodic protection current can inhibit the corrosion only when it reaches the metal surface. As for the method of supplementing the shrinkage band U, due to the poor adhesion between the shrinkage band and the pipe body layer, it is easy to wrinkle and crack under the effect of sunlight or L soil stress. It is difficult to be free of air bubbles and hollow drums at the weld. If moisture enters the F side of the shrinkage zone, moisture will enter the interior along the weld. Due to the insulating effect of the shrink band, the cathodic protection current cannot reach the corroded surface and cannot prevent corrosion. Advantages and disadvantages of shrink sleeve repair: The shrink belt has high mechanical strength, which can improve the mechanical resistance when the pipeline is under the trench. This is also the basic starting point for the use of shrink bands. The quality of the bidding Datong Lingqiu machinery or sandblasting rust removal (if special sandblasting is required) should reach the St3 or Sa2 level specified in the national standard "Steel Surface Corrosion and Derusting Grade before Painting" GB / T 23-1998. (See the appendix for the level standard.) The sum of the customized net amount * is the amount of tape (inner tape). The amount of protective tape (outer tape) is the same as that of inner tape. The inspection is based on the sealing and waterproof treatment of the construction joints of subway tunnel structures in Ordos municipal engineering. Good New Quote In 1993, only 16% of the economic loss was caused by the corrosion of the good system. The economic loss caused by petrochemical corrosion is about 20%. Datong Lingqiu heat shrinkable tape specifications are worth looking forward to. Oil Antirust Overview Overview There are a variety of threaded fasteners, from ordinary bolts, nuts, screws, to high strength, high performance, high precision, high added value and non-standard shaped parts. Anti-rust packaging is basically the same. For surface fasteners that are oxidized, phosphated, and blackened, most of them are coated with rust-proof oil on the surface and plastic packaging. Installation conditions Foam foam tape is based on pe or eva, using acrylic oil-based pressure-sensitive adhesive, and coating with release paper or release film as the insulation surface. Careful work </ p> <p>

Datong Lingqiu heat shrinkable belt specifications worth looking forward to


</ p> <p> The specifications of Datong Lingqiu heat shrinkable tape are worth looking forward. The heat seal heat seal tape is a special equipment (hot air seam sealer or high frequency heat sealing machine) for heating, sewing in raincoats, tents, air balloons and other waterproof, A kind of adhesive tape that can achieve the effect of sealing (anti-leakage and anti-leakage) at the knitting bone position of the anti-gas series products. Polyethylene modified asphalt tape is composed of polyethylene substrate, modified high viscosity asphalt and release film. This kind of tape has the characteristics of thick adhesive layer, easy winding, low viscosity and so on. A single layer of tape can be wound to achieve the ordinary or reinforced grade required by the SY / T0414-2007 standard. Changed the need for multi-layer winding of traditional tape, reducing the impact of human factors on the quality during operation, and reducing construction costs. Mechanism The above-mentioned effects of rust-preventive pigments usually exist simultaneously, and the mechanism includes the following physical, chemical, and electrochemical aspects. Pre-treatment surface treatment Usually metal surface will be attached with dust, oil, scale, rust, contamination, salt or loose old paint film. Among them, oxide scale is a common but easily overlooked part. The oxide scale is a dense oxide layer produced during the high temperature forging of steel. It usually has a relatively strong adhesion. What are the complete sets of the Datong Lingqiu heat shrinkable belt? It is brittle and itself a cathode, which accelerates metal corrosion. If these materials are not removed and applied directly, it will inevitably affect the adhesion and ability of the entire coating. According to statistics, about 70% of paint problems are caused by improper surface treatment. Therefore, for the performance of a metal coating system, proper surface treatment is essential. The use temperature of Datong Lingqiu—5 ℃ + 50 ℃, transportation and storage: sun, rain, frost and heat preservation, prevent crushing and deformation, and it is forbidden to approach heat source and open flame. Affordable price For pipes with a diameter of more than 900 mm, foreign countries basically do not need to make up for the shrinking tape, but use a primer and cold-wrapped tape. At present, domestic butyl rubber-polyethylene composite polyethylene tapes are coextensive with the same technology as abroad. Polyethylene adhesive tape, referred to as polyethylene adhesive tape, polyethylene tape, also known as duct tape, tape, cold-wound tape, PE TAPE, IDEAL TAPE, POLYETHYLENE TAPE. The performance of the product has reached the level of similar international products, and the quality index meets the requirements of the American AWWA C214 and SY / T0414 standards. Among them, Ningbo Anda's IDEAL composite polyethylene tape was rated as a high-quality product for engineering construction by the Petroleum and Natural Gas Insulation Committee in 2005, and its performance is exactly the same as that of foreign brands. Installation engineering Luzhou 03 layer petroleum asphalt layer: Petroleum asphalt layer is the outer layer of buried pipelines made of petroleum asphalt impregnated glass fiber cloth. It is a multi-layer pipe covering material. Its advantages are a wide range of raw materials and mature technology. , Cheap, disadvantages are large water absorption, temperature tolerance, easy aging, poor bacteria resistance, easy to be reed and other plant root systems. The specifications of the Datong Lingqiu heat shrinkable zone are worth looking forward to the physical role. Properly matched with pigments that react with oily film-forming agents can obtain dense coatings to enhance physical effects. For example, lead-containing pigments react with oils to form lead soap to make the coating dense, and Datong Lingqiu heat shrinkable belt specifications reduce the penetration of water and oxygen harmful substances. Phosphate-based pigments form an insoluble basic acid salt after hydrolysis, which has the effect of blocking the coating. Iron oxides or pigment fillers such as flake-shaped mica powder, aluminum powder, and glass flakes can reduce the permeability of the coating to a physical effect. Summary of inspection requirements edited summary Polyethylene adhesive tape cold-wound construction Polyethylene adhesive tape cold-wound construction polyethylene adhesive tape has been widely used as an outer material on oil and gas steel pipelines for more than 40 years. Due to its excellent performance and convenient construction performance, it occupies a certain position in pipeline materials. And due to the continuous improvement and improvement of domestic polyethylene adhesive tape companies, the variety and quality of polyethylene adhesive tape can meet the technical requirements of special reinforced and reinforced grades outside various buried pipelines, so that The application fields of adhesive tapes are constantly expanding. Quality improvement </ p> <p>

Datong Lingqiu heat shrinkable belt specifications worth looking forward to


</ p> <p> The specifications of the Datong Lingqiu heat shrinkable belt are worth looking forward to. The corrosion problems of folded and corroded steel pipes exist in the economic and national defense construction of various industries, which not only cause huge losses to the economy, but also bring great benefits to life difficult. Under natural conditions (atmospheric, natural water, soil) or man-made conditions (acid, alkali, salt and other media), steel pipes are often corroded. This spontaneous, meaningless consumption happened. The root cause is that the steel pipe is in a thermodynamically unstable state. Under the above conditions, they will return to their original relatively stable state, form iron oxide carbonates, etc., or convert to soluble ions. This process is the metal corrosion process. According to statistics, the annual output of steel is 600 million tons. More than 60 million tons are lost each year due to corrosion. Almost equivalent to the annual output of Baosteel General Iron and Steel Plant. Corrosion not only wastes steel resources, but also shortens the service life of pipelines and equipment. The cost of replacing new pipeline equipment far exceeds the cost of metal materials themselves. Therefore, good costs increase, reducing economic benefits, direct and indirect economic losses caused by corrosion are huge. Corrosion products form scale, which affects heat transfer and reduces the heat transfer efficiency of the medium flow. Energy consumption has increased significantly. The annual economic loss caused by corrosion is as high as 2,800, which exceeds the total of annual wind disasters, floods, earthquakes and fires. The main means of promising pipeline and equipment corrosion in trustworthy oilfields is layer plus cathodic protection. To some extent, the quality of the layer determines the service life of the pipeline. Workshop costs The use of heat shrinkable tapes and heat shrinkable tapes is very different in terms of flexibility. The former is generally used before the product is welded, while the latter is more flexible and can be used at any time. Anti-rust grease is composed of adding one or more anti-rust additives (also known as oil-soluble corrosion inhibitors) and its auxiliary additives to the basic components of petroleum. It is easy to use, low cost, good effect, simple operation, and fasteners. The industry is using it a lot. HHWS is a new type of patching material. It has the characteristics of not slipping during operation, high mechanical strength, stable performance, aging resistance, strong chemical resistance, strong adhesion, and easy operation. It is mainly used for full-pipe winding heat shrink coating treatment. Heat shrink tape can also be used to repair pipeline layer damage. When the heat shrinkable tape is under construction, the pipe is first preheated to above 45 ° C (especially in the environment), and the heat shrinkable tape is wound around the treated pipe with a machine or manually to ensure that the overlap width is not less than 25mm The surface of the shrinkable tape is evenly added. The base material of the heat shrinkable tape shrinks uniformly in the radial direction. At the same time, the hot melt adhesive melts, fills, and covers the pipe to form a solid and continuous pipe outer layer. (Epoxy primer + heat shrinkable tape Hot melt adhesive + heat shrinkable tape substrate = layer of PE) is a long-term and effective protection for steel pipelines. High-chlorine coatings such as MX53-4 colored high-chlorinated polyethylene topcoats (indoor and outdoor), high-chlorinated polyethylene iron red rust-proof paint, MX53-2 high-chlorinated polyethylene cloud iron Anti-rust paint, MX53-3 high chlorinated polyethylene mica iron intermediate paint, chlorosulfur coating such as J52-4 chlorosulfonated polyethylene cooling tower moisture-proof paint (bottom / surface, two-component), J52-5 chlorosulfonated polyethylene Special paint for gas cabinet (bottom / middle / surface, two-component), J52-6 chlorosulfonated polyethylene pipe coating (bottom / surface, two-component silicone coating such as MW-600 silicone high temperature resistant coating (bottom / surface) , Two-component), MW-700 organic silicon high-temperature resistant coating (bottom / surface, two-component) Anti-rust grease is the addition of one or more anti-rust additives (also known as oil-soluble corrosion inhibitors) to the basic components of petroleum ) And its auxiliary additives, it is easy to use, low cost, good effect, simple operation, and is widely used in the fastener industry. </ P>