ERW 2PE 3PE 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: What are the different methods of testing steel pipes?: There are several methods of testing steel pipes, including non-destructive testing methods such as ultrasonic testing, magnetic particle testing, liquid penetrant testing, and radiographic testing. Destructive testing methods like tensile testing, bend testing, and impact testing can also be used to assess the strength and integrity of steel pipes.

Q: How are steel pipes protected against external corrosion in coastal areas?: Steel pipes in coastal areas are protected against external corrosion through various methods. One commonly used method is the application of protective coatings, such as epoxy or polyethylene, which act as a barrier between the steel surface and the corrosive elements in the coastal environment. Additionally, cathodic protection techniques, such as sacrificial anode systems or impressed current systems, are employed to prevent corrosion by providing a protective current to the steel pipes. Regular inspection and maintenance of these protective measures also play a crucial role in ensuring the long-term corrosion protection of steel pipes in coastal areas.

Q: What's the difference between straight steel pipe and seamless steel pipe?: Observe whether there is weld seam. Welded pipe without treatment, there are obvious weld, there are bulges, like scars. A better point will shave off the weld, but there is a distinct difference between the eye and the eye. Also a small number of pipe will be processed after cold rolling, surface roughness and accuracy are relatively high, may be counterfeit seamless pipe sales. Careful observation will still show that the pipe wall will have a continuous spiral, metal luster slightly brighter, that is, the original welding seam, metallographic structure and other parts of the difference. To tell the truth, the layman would have to observe that it might be a little difficult.

Q: What is the difference between steel pipes and FRP pipes?: Steel pipes and FRP (Fiberglass Reinforced Plastic) pipes differ in their material composition, properties, and applications. While steel pipes are made from steel, FRP pipes are composed of a combination of resin and fiberglass. Steel pipes are known for their high strength and durability, making them suitable for heavy-duty applications such as transporting oil, gas, and water. On the other hand, FRP pipes are lightweight, corrosion-resistant, and have excellent chemical resistance, making them ideal for applications where corrosion is a concern, such as in the chemical industry or in sewage systems. Furthermore, FRP pipes offer better insulation properties and are easier to install due to their lighter weight. Overall, the choice between steel pipes and FRP pipes depends on the specific requirements and conditions of the application.

Q: How are steel pipes used in the renewable energy sector?: Steel pipes are commonly used in the renewable energy sector for various purposes, primarily in the construction and installation of infrastructure for wind and solar energy projects. Steel pipes are used to support and anchor wind turbine towers, as well as to transport compressed air or hydraulic fluid for the operation of wind turbines. They are also utilized in the construction of solar panel frameworks, providing stability and durability. Additionally, steel pipes are used in geothermal energy projects for the extraction and transportation of hot water or steam from underground sources to power plants. Overall, steel pipes play a crucial role in enabling the efficient and reliable operation of renewable energy systems.

Q: What are the different types of coatings used for external protection of steel pipes?: There are several types of coatings used for external protection of steel pipes. Some common ones include epoxy coatings, polyethylene coatings, coal tar coatings, and fusion bonded epoxy coatings. Each type of coating offers specific benefits and is chosen based on factors such as the environment, type of exposure, and desired level of protection.

Q: How do you calculate the deflection of a steel pipe?: To determine the deflection of a steel pipe, one must take into account various factors, including material properties, applied loads, and geometrical characteristics. The following steps can serve as a guide: 1. Material properties must be determined. This involves obtaining information about the steel pipe, such as its Young's modulus (E), which signifies its stiffness or resistance to deformation. Typically, this value is provided by the manufacturer or can be found in material databases. 2. The applied loads need to be analyzed. It is necessary to identify the types and magnitudes of the loads acting on the steel pipe. These loads can consist of point loads, distributed loads, or a combination of both. Additionally, the location and orientation of the applied loads must be determined. 3. The geometry of the pipe must be evaluated. The dimensions of the steel pipe, including its length (L), outer diameter (D), and wall thickness (t), should be measured or obtained. Accuracy in these values is crucial for precise calculations. 4. An appropriate calculation method should be selected. Depending on the complexity of the loading and support conditions, one may need to employ either simple beam theory or more advanced structural analysis methods, such as the finite element method (FEM). 5. The relevant equations must be applied. For simple beam theory, the Euler-Bernoulli beam equation can be utilized to calculate the deflection at a specific point on the pipe. This equation assumes the pipe is homogeneous, linearly elastic, and subjected to small deflections. In more complex scenarios, FEM software can handle the calculations. 6. Boundary conditions must be determined. The support conditions at both ends of the pipe, which can include fixed supports, simply supported ends, or combinations of both, need to be identified. These conditions significantly influence the deflection of the pipe. 7. The deflection can be calculated. By using the equations relevant to the chosen method and incorporating the material properties, applied loads, and geometry, one can calculate the deflection at specific points along the steel pipe. The deflection can be measured in terms of vertical displacement or angular rotation. It is important to note that calculating the deflection of a steel pipe may require specialized engineering knowledge and software tools. If one lacks experience in structural analysis, it is advisable to consult a professional engineer to ensure accurate results and safe design.

Q: How do steel pipes handle high-velocity flow?: Steel pipes are able to handle high-velocity flow due to their strong and durable nature. The smooth inner surface of steel pipes allows for efficient and smooth flow of fluids, minimizing frictional losses. Additionally, steel pipes have high tensile strength, enabling them to withstand the pressure exerted by high-velocity flow without deformation or bursting.

Q: How are steel pipes used in the manufacturing of fire sprinkler systems?: Steel pipes are commonly used in the manufacturing of fire sprinkler systems due to their durability, strength, and resistance to high temperatures. These pipes are used to transport pressurized water or fire retardant throughout the sprinkler system, ensuring quick and effective fire suppression. The steel pipes are installed strategically throughout the building, delivering water to sprinkler heads that are activated when heat is detected. Overall, steel pipes play a crucial role in the safe and efficient operation of fire sprinkler systems, protecting lives and property from the devastating effects of fires.

Q: Where is a steel pipe casing usually used?: Classification of casing: rigid casing, flexible waterproof sleeve, steel pipe sleeve and iron sheet bushing, etc..

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