Polypropylene cold-sleeve tape is a new environmentally friendly anti-corrosion product with no pollution and hazards, representing the high level of cold-sleeve anti-corrosion tape both internationally and domestically, and is known as the "Champion of Corrosion Prevention." It can be widely used in the oil, natural gas, chemical industry, and urban construction for water supply and drainage, oil and gas, and coal gas transmission pipelines, as well as the external anti-corrosion and repair projects for steel storage tanks. It is a recommended product designated by the Ministry of Construction and the State Environmental Protection Administration to replace "asphalt glass fiber cloth" and "epoxy coal tar asphalt." It features easy construction, impact resistance, aging resistance, tensile resistance, UV radiation resistance, and high bonding strength. The base material of this product is a unique modified polypropylene woven fiber cloth, with a corrosion-resistant layer made of butyl rubber-modified asphalt. Its fibrous structure effectively resists creep damage caused by soil stress, and aging tests have proven its corrosion resistance to last over 50 years. All test indicators are significantly higher than the requirements of the SY/T0414—98 standard. It is the choice for pipeline cold anti-corrosion construction tape and also an economical anti-corrosion option.
Standard for inspecting the anti-corrosion coating of polypropylene cold-skin tape
The quality of the anticorrosive coating is crucial in evaluating the anticorrosive quality of polypropylene cold shrink tape. Therefore, it is very important. After the tape production is completed, manufacturers need to conduct quality checks on the anticorrosive coating to ensure it meets the usage standards.
1. When inspecting the anti-corrosion layer of the polypropylene cold-skin tape, check the thickness of the anti-corrosion layer to ensure it meets the standard requirements. A random measurement can be taken to verify its qualification; if it's not up to standard, double-checking is required.
2. Inspect the anti-corrosion layer of the polypropylene cold-skin tape, and also check the peel strength. However, the test should be conducted 4 hours after the tape is wrapped. If the random checks meet the requirements, it is considered qualified.\
Polypropylene corrosion-resistant tape represents the high level of cold-skin corrosion-resistant tape both internationally and domestically. It is a new type of environmentally friendly corrosion-resistant product that is pollution-free and non-hazardous, and is known as the "Champion of Corrosion Prevention." It can be widely used in the external corrosion prevention and repair projects of oil and gas, petrochemicals, urban construction's water supply and drainage, oil and gas transmission pipelines, and steel storage tanks. It is the recommended product designated by the Ministry of Construction and the State Environmental Protection Administration to replace "asphalt glass fiber cloth" and "epoxy coal tar asphalt." It features easy construction, impact resistance, aging resistance, tensile resistance, UV radiation resistance, and high bonding strength.
Winding Method:
Firstly, when using polypropylene tape, you must unwind it, but ensure the unwinding temperature. If the ambient temperature is low, it is recommended to use a blowtorch to heat the tape.
When initiating the winding of polypropylene adhesive tape, there are two methods: mechanical winding and manual winding. During the winding process, the edges should be parallel; twisting or creasing should be avoided.
After wrapping the polypropylene adhesive tape, a check is required. There should be a seam, which can initially be patched with about 30mm of tape, then pressed down with a smooth tool.
Polypropylene Anti-corrosion Adhesive Tape Details
The base material of the polypropylene corrosion-resistant adhesive tape is a unique modified polypropylene woven fiber cloth, coated with butyl rubber-modified asphalt for the corrosion-resistant layer. Its fibrous structure effectively resists creep damage caused by soil stress, with aging tests proving a corrosion-resistant lifespan of over 50 years. All test indicators significantly exceed the requirements of the SY/T0414—98 standard, fully meeting the specifications of the American ANSI/AWWA C209-00 and NACE MR0274-95. It is a preferred choice for pipeline cold corrosion protection applications and an economical option for corrosion prevention.
What conditions are required for the repair of polypropylene anti-corrosion adhesive tape?
Polyethylene adhesive tape is divided into inner and outer tapes, and comes in various specifications. It does not produce environmental pollution during installation. When using polypropylene anti-corrosion adhesive tape for patching, what conditions should the anti-corrosion layer meet?
1. During pipe handling, installation, or backfilling, the anti-corrosion coating is susceptible to impact. Therefore, an impact resistance test of the anti-corrosion coating is required.
2. When applying joint sealing with polypropylene corrosion-resistant adhesive tape, the lower the water absorbency of the corrosion-resistant layer, the better. Generally, the water absorbency index is used to measure the water absorbency of the corrosion-resistant layer, which can be tested by soaking the layer in water and detecting its water absorption capacity.
3. The joint area of the anticorrosive coating, unlike the coating on the pipe body, may bend and stretch due to changes in environment and operating temperature, which can also damage the anticorrosive coating.
PolypropyleneEnhanced Fiber Corrosion-Resistant Tape Details
Enhanced fiber anti-corrosion tape, specifically designed for cold wrapping on polypropylene enhanced fiber pipelines, is widely used in the oil, natural gas, chemical industry, and urban construction sectors for water supply and drainage, oil and gas, and coal gas transmission pipelines, as well as the external anti-corrosion and repair projects of steel storage tanks. It features a unique polypropylene enhanced fiber base material, coated with a certain thickness of high-tack butyl rubber-modified asphalt anti-corrosion rubber, and then covered with a layer of anti-adhesive release film.
Several wrapping methods for reinforced fiber corrosion-resistant belts
1. Hand-wound wrapping. This method involves first setting up the pipeline, then manually removing rust, followed by manually applying primer after rust removal. Once the primer is surface dry, wrap the tape by hand.
2. Manual Tools. This wrapping method involves first hoisting the pipe, then applying rust removal and primer, and manually wrapping the tool and sleeve around the pipe. Adjust the rubber wheel to a suitable angle, place the tape on the reel, and manually operate the construction process.
3. Power equipment. During construction, the motor drives the rubber wheel through a reduction gear. Then, start the motor of the transmission device. Place the reinforced fiber anti-corrosion belt on the unwinding reel and wrap it as required.
The wrapping methods for reinforced fiber anti-corrosion belts mainly consist of the three types mentioned above. Each has its own wrapping advantages and characteristics. Therefore, when users make a selection, they should first clarify their usage requirements, thereby choosing the appropriate method to better achieve the anti-corrosion effect.
Polypropylene Reinforced Anticorrosion Tape Application Method:
(1) Surface Treatment of Steel Pipes: Rust, slag, and dirt removal, maintaining cleanliness and dryness. Hand rust removal should reach St3 grade, while mechanical rust removal should reach Sa2 grade.
(2) Priming: Use the matching primer, keep away from fire sources during application, mix thoroughly, and apply evenly using a clean brush, roller, or other mechanical methods.
(3) Once the undercoat is dry to the touch (usually within 5-10 minutes), you can wrap the tape.
(4) Excavation Backfill: The trench can be backfilled upon passing the quality inspection and acceptance.
The reasons for the formation of leak points in polypropylene reinforced fiber anti-corrosion tape
Polypropylene reinforced fiber anti-corrosion tape is an industrial adhesive tape used for corrosion protection. It is primarily applied in industries such as oil and natural gas transmission. However, tape leaks often occur due to improper installation and other reasons. To eliminate and prevent such occurrences, the corresponding causes are introduced.
1. If not careful during the filling process, the tape can be damaged, scratched, or otherwise compromised, leading to corrosion layer breakage and potential leak points.
2. At the welding points of the anti-corrosion tape reinforced with polypropylene fibers, the anti-corrosion adhesive has come loose, which can also lead to leakage points.
3. After construction, the polyethylene adhesive tape was placed on the stones. During the backfilling process, failure to pay attention can lead to the protective layer being damaged and leakage points appearing.
Be extra cautious during construction. Leaks in polypropylene reinforced fiber corrosion-resistant tape are often due to improper handling during installation. Therefore, correct installation and subsequent maintenance are absolutely indispensable.
Base material is unique modified polypropylene woven fiberTapeUtilizing butyl rubber-modified asphalt for the anticorrosive coating layer, its base material is a fibrous structure that can effectively resist creep damage caused by soil stress. Aging tests have proven its corrosion resistance lifespan to exceed 50 years. It is widely applicable in the oil, natural gas, chemical industry, and urban construction for water supply and drainage, oil and gas transmission pipelines, and steel storage tanks for gas. It is a recommended product designated by the Ministry of Construction and the State Environmental Protection Administration to replace "asphalt glass fiber cloth" and "epoxy coal tar asphalt." It boasts features such as easy installation, impact resistance, aging resistance, tensile resistance, UV radiation resistance, and high bonding strength, making it a suitable choice for cold anticorrosive pipeline construction tapes and an economical option for anticorrosion.
How to Control Bubbles in Polypropylene Tape
The other side of the polyethylene adhesive tape features adhesive, with polyethylene as the base material, ensuring good adhesion and quality during installation. How to control the bubble phenomenon in polypropylene adhesive tape?
1. When constructing, different types of tape require different primers. The matching of the anticorrosive layer with the primer is crucial; proper pairing simplifies the construction process.
2. When applying缠绕 polypropylene tape, avoid high temperatures and humid conditions; the relative humidity should not exceed 85%. If rain occurs during application, wait for the tape to dry before proceeding with the anti-corrosion process.
