seamless and welded 2PE steel pipe external coating

seamless and welded 2PE steel pipe external coating

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Specifications

water pipeline inner-layer tape
1 Butyl rubber as adhesive
2. SGS test report and DVGW certificate
3. corrosion protection

water pipeline inner-layer tape

State-of-the-Art Pipeline Protection for All Climates & Environments

System description:

WATER PIPELINE Inner -layer tape also be called pipe wrap anti-corrosion tape, polyethylene wrap tape.

water pipeline Inner-layer tapeT100 is engineered to assure a high bond to the primed pipe surface with excellent conformability characteristics, aggressive adhesive for corrosion protection and repair of main line coatings.

Inner-layer tapeT100 series is cold applied tape coating system for corrosion protection of Oil, Gas, Petrochemical, and Waste Waterburied pipeline, pipe can be buried, also can be underground ,overhead ,onshore and offshore .

Structure of water pipeline inner wrap tape
The specification of the tape consists of two layers, adhesive layer and film backing
Adhesive: butyl rubber
Film backing: Special blend of stabilized polyethylene

Features & Benefits

Provides a permanent bond to the primed steel pipes surface and provides protection against chemical electrolytic corrosion for underground pipelines.
long term corrosion protection
Worldwide reference lists. Established in-ground history
High chemical resistance under service temperature.
Outstanding electric property and permanent adhesion.
Cold applied, No release liner. Makes installation fast and easy.
Complies with EN-DIN 30672 and AWWAC-214 international standards and also ASTM standards.
Be used for water pipeline corrosion protection

System Properties

Type	T138	T 150		T165	T180	T 250	T265	T280
Thickness	15mil 0.38mm	20mil 0.508mm		25mil 0.635mm	30mil 0.762mm	20mil 0.508mm	25mil 0.635mm	30mil 0.762mm
Backing	9mil 0.229mm	9mil 0.241mm		10mil 0.25mm	10mil 0.25mm	15mil 0.38mm	20mil 0.508mm	25mil 0635mm
Adhesive	6mil 0.152mm	11mil 0.279mm		15mil 0.381mm	20mil 0.508mm	5mil 0.127mm	5mil 0.127mm	5mil 0.127mm
When used for ductile iron pipes inner layer 980-20 or 980-25 and outer layer 955-20 or 955-25 are recommended.
Elongation	³300%					³400%
Tensile Strength	55 N/cm					70 N/cm
Color	Black					White
Peel Adhesion to Primed Pipe			33 N/cm
Dielectric Strength			30 KV
Dielectric Breakdown			26 KV/mm
Cathodic Disbandment			0.24 in radius 6.4 mm
Water Vapor Transmission Rate			< 0.1%
Volume Resistivity			2.5 x 10¹⁵ ohm.cm
Impact resistance			5.5Nm
Penetration Resistance			<15%
Performance			AWWA C-209,ASTM D 1000,EN 12068

Order information

Length	100ft(30 M),200ft(60 M),400ft(120 M),800ft(240 M)
Width	2’’(50mm),4’’(100mm),6’’(150mm),17’(450mm),32’’(800mm)

Q: Can steel pipes be used for conveying chemicals?: Steel pipes are capable of conveying chemicals. Steel, being a robust and long-lasting material, can endure high pressure and temperature conditions. This makes it suitable for the transportation of diverse chemicals. Moreover, steel pipes possess exceptional resistance against corrosion, which is particularly crucial when handling corrosive substances. They find common usage in industries such as oil and gas, chemical processing, and water treatment, where the secure and efficient conveyance of chemicals is indispensable. However, it is essential to consider the specific requirements of the chemical being transported and ensure compatibility with the steel pipe. It may be necessary to select the appropriate material, including the utilization of corrosion-resistant coatings or linings, to prevent any adverse reactions between the chemicals and the steel pipe.

Q: How are steel pipes used in the construction of railways?: Steel pipes are commonly used in the construction of railways for various purposes. They are primarily used in the fabrication of track structures, such as track supports, bridge components, and culverts. Steel pipes provide strength, durability, and resistance to external factors like corrosion and extreme weather conditions. They are also used for the transportation of fluids, such as water or fuel, within the railway infrastructure, ensuring efficient operation and maintenance of the system.

Q: What is the thermal conductivity of steel pipes?: The thermal conductivity of steel pipes can vary depending on the specific type of steel used and its composition. However, on average, the thermal conductivity of steel pipes is around 50-60 watts per meter-kelvin (W/mK). This means that steel pipes are relatively good conductors of heat, allowing for efficient transfer of thermal energy. The high thermal conductivity of steel pipes makes them suitable for various applications, including heating systems, industrial processes, and infrastructure projects where heat transfer is essential.

Q: What are the different methods of pipe repair for steel pipes?: There are several different methods of pipe repair for steel pipes, depending on the severity and location of the damage. Here are some of the most common methods: 1. Welding: This is a common method used for repairing steel pipes, especially when the damage is localized. The damaged section of the pipe is cut out, and a new piece of pipe is welded in its place. The weld is then inspected to ensure its strength and integrity. 2. Pipe wrapping: This method involves wrapping a layer of fiberglass or epoxy around the damaged section of the pipe. The wrap is applied tightly and securely to provide structural reinforcement and prevent further leakage or corrosion. 3. Pipe lining: This technique involves inserting a flexible liner into the damaged pipe. The liner is made of materials such as epoxy, PVC, or cured-in-place pipe (CIPP). Once inserted, the liner is inflated or heated to conform to the shape of the pipe, creating a new inner surface that is resistant to corrosion and leakage. 4. Slip lining: Similar to pipe lining, slip lining involves inserting a smaller diameter pipe into the damaged pipe. The smaller pipe acts as a protective sleeve, providing structural reinforcement and preventing further deterioration of the original pipe. 5. Pipe bursting: This method is used when the damage to the pipe is extensive. A new pipe is pulled through the damaged one, using a hydraulic or pneumatic system. As the new pipe is pulled through, it bursts the old pipe, creating a larger diameter pipe with minimal disruption to the surrounding area. 6. Clamp or sleeve repair: In cases where the damage is small and localized, a clamp or sleeve can be used to provide a temporary or permanent fix. The clamp or sleeve is placed over the damaged section and tightened securely to prevent leakage. It is important to note that the best method of pipe repair for steel pipes depends on various factors such as the extent of damage, accessibility, cost, and structural requirements. Consulting with a professional pipe repair specialist or engineer is recommended to determine the most suitable method for your specific situation.

Q: What are the different methods of joining steel pipes together?: There are several methods of joining steel pipes together, each with its own advantages and disadvantages. 1. Welding: This is the most common and widely used method of joining steel pipes. It involves heating the ends of the pipes and applying pressure to fuse them together. Welding provides a strong and durable joint, but it requires skilled labor and specialized equipment. 2. Threaded connections: Steel pipes can also be joined by threading the ends and using threaded fittings to connect them. This method is relatively easy and quick, but it may not be as strong as welding and can be prone to leakage if not properly sealed. 3. Flanged connections: Flanges are used to connect pipes by bolting them together. This method allows for easy disassembly and reassembly, making it suitable for applications that require frequent maintenance or repair. Flanged connections are also highly resistant to leakage. 4. Compression fittings: Compression fittings are used to join steel pipes by compressing a ring or ferrule onto the pipe, creating a tight seal. This method is simple and does not require heat or welding, making it ideal for applications where heat or sparks are not permissible. 5. Grooved connections: Grooved connections involve cutting grooves into the pipe ends and using mechanical couplings to secure them together. This method is fast, reliable, and allows for easy assembly and disassembly. Grooved connections are commonly used in fire protection systems. 6. Brazing: Similar to welding, brazing involves heating the pipe ends and adding a filler material to join them together. This method is often used for smaller diameter pipes and provides a strong joint. However, it requires the use of a high-temperature torch and skilled labor. Each of these methods has its own advantages and is suitable for different applications. The choice of joining method depends on factors such as the required strength, ease of installation, maintenance requirements, and the type of pipe being used.

Q: What are the different sizes available for steel pipes?: Steel pipes are available in a wide range of sizes, ranging from small diameters as small as 1/8 inch to larger diameters exceeding 72 inches. The sizes of steel pipes are typically measured based on their outside diameter (OD) and wall thickness, with various standard sizes available to meet different application requirements.

Q: How are steel pipes used in offshore wind farms?: Steel pipes are used in offshore wind farms for a variety of purposes. They are commonly used as foundation structures to support wind turbine towers, providing stability and strength in the harsh marine environment. Steel pipes are also used for subsea cables and pipelines, allowing for the transportation of electricity and other resources. Additionally, they play a crucial role in the installation of offshore wind turbines, serving as installation aids and providing access for maintenance and repair activities. Overall, steel pipes are essential components in the construction, operation, and maintenance of offshore wind farms.

Q: What is a flange and how is it used in steel pipes?: A flange is a mechanical joint used to connect two sections of steel pipes or other equipment together. It consists of a ring or plate with evenly spaced holes for bolts or welding. Flanges are used in steel pipes to provide a secure and leak-proof connection. They allow for easy assembly and disassembly of pipes, as well as provide a connection point for additional components like valves, fittings, or other pipe accessories.

Q: How do you measure the thickness of a steel pipe?: Different methods can be used to measure the thickness of a steel pipe, depending on the required precision and available tools. Here, we present three commonly used approaches: 1. Calipers or Vernier Calipers: These are widely used and straightforward tools for measuring thickness. Place the jaws of the calipers on both sides of the pipe, ensuring they are perpendicular to the surface. Gently close the jaws until they touch the pipe, and then read the measurement on the caliper scale. 2. Ultrasonic Thickness Gauge: This method provides more accurate results and is commonly employed in industrial settings. An ultrasonic thickness gauge emits high-frequency sound waves that penetrate the steel pipe. By measuring the time it takes for the sound waves to bounce back, the gauge calculates the pipe's thickness. Before taking the measurement, ensure that the pipe surface is clean and smooth. 3. Magnetic Thickness Gauge: This method is specifically designed for measuring the thickness of ferrous materials like steel. The gauge incorporates a small magnet that adheres to the pipe surface. By applying a magnetic field, the gauge determines the distance between the magnet and the base plate. This distance corresponds to the thickness of the steel pipe. It is important to consider that each method has its own limitations in terms of accuracy. The choice of measurement technique should be based on the desired precision, availability of tools, and the specific requirements of the application.

Q: How are steel pipes specified in engineering drawings?: Steel pipes are specified in engineering drawings by providing information such as the diameter, length, wall thickness, material grade, and any other relevant specifications or standards that need to be followed.

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