ERW 2PE 3PE steel pipe external coating

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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 natural gas distribution?: Yes, steel pipes can be used for natural gas distribution. Steel pipes are commonly used in the natural gas industry due to their strength, durability, and ability to withstand high pressure. They are capable of safely transporting natural gas over long distances and are often preferred for their resistance to corrosion and leaks.

Q:What is the role of steel pipes in the construction of bridges and tunnels?: Steel pipes play a crucial role in the construction of bridges and tunnels. They are extensively used for various purposes due to their strength, durability, and versatility. In bridge construction, steel pipes are commonly employed for the fabrication of the bridge's structural framework. They serve as the primary load-bearing members, providing support and stability to the entire structure. Steel pipes are particularly favored in bridge construction due to their high tensile strength, which enables them to withstand heavy loads, including the weight of vehicles and the dynamic forces generated by traffic. Steel pipes are also utilized in the construction of bridge piers and abutments. These components provide the foundation and support for the bridge structure. Steel pipes are often driven deep into the ground to create sturdy foundations that can withstand the forces exerted by the bridge's weight and external factors such as wind, water currents, and seismic activity. Similarly, steel pipes are essential in tunnel construction. They are extensively used in tunnel lining, which refers to the installation of structural elements along the tunnel walls and roof to provide stability and prevent soil or rock collapse. Steel pipes are often used as reinforcement elements, ensuring the structural integrity of the tunnel and protecting it from external pressures. Moreover, steel pipes are employed for underground utility systems in both bridges and tunnels. They serve as conduits for various utilities such as water supply, electrical cables, gas pipelines, and communication lines. Steel pipes are ideal for these applications due to their corrosion resistance, ability to withstand high pressures, and longevity. Overall, the role of steel pipes in the construction of bridges and tunnels is to provide strength, stability, and durability to the structures. They play a vital role in ensuring the safety and functionality of these critical infrastructure projects, allowing for efficient transportation and the seamless provision of utilities.

Q:How are steel pipes used in the manufacturing of furniture and appliances?: Due to their strength, durability, and versatility, steel pipes find widespread use in the production of furniture and appliances. In furniture manufacturing, they are commonly employed to construct the frames and structures of various pieces, including chairs, tables, and beds. Serving as the primary support system, these pipes ensure a sturdy and dependable foundation for the furniture. In appliances, steel pipes serve multiple purposes. They are frequently utilized to create the internal framework and bear the weight of kitchen appliances such as stoves, ovens, and refrigerators. Additionally, steel pipes are commonly found in washing machines, dryers, and dishwashers, facilitating the transportation of water and other fluids throughout the appliance. Moreover, steel pipes are essential in the manufacture of outdoor furniture and equipment that require weather resistance and durability. To safeguard against rust and corrosion, these pipes are often coated with protective materials, thus ensuring the longevity of the furniture and appliances. In conclusion, steel pipes play a vital role in the production of furniture and appliances, providing the necessary strength and support. Their versatility allows for various applications, making them an indispensable component in the manufacturing process of these goods.

Q:How do you calculate the pipe flow rate for steel pipes?: In order to calculate the flow rate of steel pipes, one must take into account various factors. Initially, the inside diameter of the pipe, which is commonly represented as D, needs to be determined. Subsequently, the length of the pipe, denoted as L, should be measured. Furthermore, one must be aware of the pressure drop, ΔP, across the pipe and the density of the fluid, ρ. Once all this information is obtained, either the Darcy-Weisbach equation or the Hazen-Williams equation can be utilized to calculate the flow rate. The Darcy-Weisbach equation is typically employed for pipes with turbulent flow, whereas the Hazen-Williams equation is commonly used for pipes with laminar flow. For the Darcy-Weisbach equation, the formula is as follows: Q = (π/4) * D^2 * √(2ΔP/ρ) Here, Q denotes the flow rate in cubic meters per second, D represents the inside diameter of the pipe in meters, ΔP signifies the pressure drop across the pipe in pascals, and ρ stands for the fluid density in kilograms per cubic meter. On the other hand, for the Hazen-Williams equation, the formula is as follows: Q = C * (D^2.63) * (ΔP^0.54) * (L^0.63) In this case, Q represents the flow rate in cubic meters per second, D denotes the inside diameter of the pipe in meters, ΔP signifies the pressure drop across the pipe in pascals, L represents the length of the pipe in meters, and C represents the Hazen-Williams coefficient, which relies on the roughness of the pipe. To ensure an accurate calculation of the pipe flow rate, it is imperative to maintain consistent units of measurement throughout the calculation. Additionally, precise measurements of the inside diameter, length, pressure drop, and fluid density are crucial in obtaining reliable results.

Q:How do you prevent corrosion in steel pipes?: One effective way to prevent corrosion in steel pipes is by applying a protective coating, such as paint or epoxy, to the surface of the pipes. This barrier creates a physical barrier between the pipe and the surrounding environment, preventing moisture and corrosive agents from coming into direct contact with the steel. Additionally, regular inspection and maintenance of the pipes, including cleaning and repairing any damaged coating, can help identify and address potential issues before they lead to corrosion.

Q:What are the specific differences between flexible pipes and rigid pipes?: The rigid waterproof sleeve is used in the wall of the building which does not need to bear the vibration and expansion deformation of the pipe, and the wall thickness is 200mm in general;Flexible waterproof sleeve is mainly applicable to the wall of buildings with seismic requirements, pipeline vibration and expansion deformation, and strict waterproof requirements, and the wall thickness is 300mm

Q:What is the difference between hot dip galvanized steel pipe and galvanized steel pipe?: The difference between the process is that the hot dip galvanized pipe is dipped in the molten zinc bath and the galvanized pipe is plated with a metallic surface by means of unidirectional current in the plating bath. Hot plating process is fast, the coating is thick and consumes more zinc. Ordinary galvanized slow speed, thin coating.

Q:What is the difference between steel pipe and PVC pipe?: Both steel pipe and PVC pipe are commonly utilized materials for plumbing and other construction purposes; however, they possess several distinct dissimilarities. To begin with, the materials themselves differ. Steel pipe is manufactured from a blend of iron and carbon, known as steel. This material is renowned for its robustness and durability, rendering it appropriate for high-pressure applications and subterranean installations. Conversely, PVC (polyvinyl chloride) pipe is crafted from a type of plastic called PVC. PVC pipe is characterized by its lightweight nature, flexibility, and ease of handling, making it a favored choice for residential plumbing and irrigation systems. Next, the installation process varies. Steel pipe necessitates skilled labor and specialized tools for cutting, threading, and welding. It frequently involves a complex installation procedure, particularly for larger pipe sizes. Conversely, PVC pipe can be effortlessly cut with a saw or specialized pipe cutter and joined together utilizing solvent cement or threaded fittings. This renders PVC pipe more suitable for DIY projects and simpler installations. Moreover, steel pipe incurs greater costs compared to PVC pipe. Steel is a pricier material, and the manufacturing process for steel pipe is more intricate, entailing multiple steps and additional materials. PVC pipe, as a plastic-based material, is generally less expensive and more cost-effective, particularly for smaller diameter applications. In terms of performance, steel pipe possesses greater tensile strength, can endure higher levels of pressure, and exhibits greater resistance to temperature fluctuations, rendering it ideal for heavy-duty and industrial applications. Conversely, PVC pipe possesses lower tensile strength but is resistant to corrosion, chemicals, and scale buildup. PVC pipe is commonly employed in residential plumbing, irrigation systems, and other non-industrial applications. To summarize, the primary disparities between steel pipe and PVC pipe revolve around the materials used, installation processes, costs, and performance characteristics. While steel pipe is sturdier and more suitable for heavy-duty applications, PVC pipe is lighter, easier to install, and more cost-effective for residential and non-industrial purposes.

Q:What are the different grades of steel used for manufacturing pipes?: The different grades of steel used for manufacturing pipes vary depending on their intended applications. Some common grades include carbon steel, stainless steel, and alloy steel. Carbon steel is commonly used for general-purpose piping due to its affordability and strength. Stainless steel is preferred for corrosive environments or high-temperature applications due to its resistance to corrosion. Alloy steel, on the other hand, offers improved strength and durability and is often used for specialized applications such as oil and gas pipelines.

Q:What are the different testing methods used for steel pipes?: There are various testing methods used for steel pipes, including non-destructive testing methods such as ultrasonic testing, magnetic particle testing, radiographic testing, and liquid penetrant testing. These methods help detect any defects or flaws in the pipes, ensuring their quality and integrity. Additionally, destructive testing methods such as tensile testing, impact testing, and hardness testing are also used to evaluate the mechanical properties of the steel pipes.

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