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: What is the difference between steel pipes and PVC-M pipes?: The main difference between steel pipes and PVC-M pipes lies in their material composition. Steel pipes are made of steel, which gives them higher strength and durability. They are commonly used for high-pressure applications and in areas where the pipes may be exposed to extreme conditions or corrosive substances. On the other hand, PVC-M pipes are made of polyvinyl chloride modified with certain additives to enhance their impact resistance and toughness. They are lightweight, easy to install, and resistant to corrosion, making them suitable for various applications, including water supply, irrigation, and drainage systems. While steel pipes offer superior strength, they are more expensive and require regular maintenance, such as anti-corrosion treatments. PVC-M pipes, on the other hand, are more affordable, require minimal maintenance, and can be easily joined using solvent welding or mechanical fittings. In summary, the choice between steel pipes and PVC-M pipes depends on factors such as the intended use, budget, and environmental conditions.

Q: How do you determine the required wall thickness for steel pipes?: The required wall thickness for steel pipes is determined through various factors and calculations. One of the primary considerations is the pressure that the pipe will be subjected to. The higher the pressure, the thicker the wall needs to be to ensure the pipe can withstand the internal forces. Another important factor is the material strength of the steel used for the pipe. Different grades of steel have varying tensile strengths, which affect the required wall thickness. The tensile strength is the maximum amount of stress a material can withstand before it fails, so it is crucial to select a steel grade that can handle the expected pressure. Additionally, the pipe's diameter plays a role in determining the required wall thickness. Larger diameter pipes generally require thicker walls to maintain structural integrity and prevent deformation under pressure. To calculate the required wall thickness, engineers use industry standards and formulas. The most commonly used standard is the American Society of Mechanical Engineers (ASME) B31 code, which provides guidelines for designing pressure piping systems. The ASME code incorporates factors such as safety margins, material properties, and pressure ratings to determine the appropriate wall thickness. Furthermore, other considerations such as temperature, corrosion, and external loads may also influence the required wall thickness. For example, high-temperature applications may require thicker walls to prevent the pipe from buckling or becoming too soft. In summary, determining the required wall thickness for steel pipes involves considering factors such as pressure, material strength, diameter, temperature, and other external forces. Engineers rely on industry standards and calculations to ensure the pipe can withstand the intended operating conditions safely.

Q: What are the factors to consider when designing a steel pipe system?: When designing a steel pipe system, several factors need to be considered to ensure its functionality, durability, and efficiency. These factors include: 1. Pressure and temperature requirements: Determining the maximum pressure and temperature that the steel pipe system will be exposed to is crucial. This information is essential for selecting the appropriate pipe material, thickness, and jointing method to withstand the system's operating conditions. 2. Pipe material: Choosing the right material for the steel pipe system is important. Factors such as corrosion resistance, strength, and cost should be considered. Common materials for steel pipes include carbon steel, stainless steel, and alloy steel. 3. Pipe size and thickness: Calculating the adequate pipe size and wall thickness is essential to ensure the required flow rate and pressure drop within the system. The pipe size affects the system's efficiency and must be chosen based on the anticipated flow rates and pressure losses. 4. Support and anchoring: Proper support and anchoring are critical to prevent sagging, movement, and stress on the steel pipe system. The design should consider the weight of the pipes, the fluid being transported, and any external forces that may act on the system. 5. Expansion and contraction: Steel pipes expand and contract with temperature variations, causing stress on the system. Expansion joints or loops should be incorporated to allow for thermal growth and contraction, preventing damage and distortion. 6. Fluid compatibility: Understanding the properties of the fluid being transported, such as corrosiveness, viscosity, and potential for sedimentation or scaling, is important in selecting the appropriate pipe material and protective coatings or linings. 7. Accessibility and maintenance: Consideration should be given to the accessibility of the system for installation, inspection, and maintenance purposes. Proper access points, valves, and fittings should be included in the design to allow for easy maintenance and repairs. 8. Environmental factors: The steel pipe system may be exposed to various environmental conditions, such as extreme temperatures, humidity, or corrosive substances. These factors should be considered when selecting the pipe material, protective coatings, and insulation. 9. Regulatory compliance: Compliance with applicable industry standards, codes, and regulations is essential. The design should adhere to safety guidelines and applicable building codes to ensure the pipe system's integrity and longevity. 10. Cost consideration: Finally, the overall cost of the steel pipe system, including material, installation, maintenance, and energy consumption, should be taken into account. Balancing cost-effectiveness with performance requirements is crucial in achieving an efficient and economical design. By considering these factors, engineers and designers can create a steel pipe system that is suitable for its intended purpose, ensuring its longevity, reliability, and safety.

Q: What is the minimum wall thickness for steel pipes?: The minimum wall thickness for steel pipes depends on several factors, including the intended use of the pipe and the specific industry standards and regulations. In general, the minimum wall thickness is determined by considering factors such as the pipe's diameter, the material strength, and the pressure or load it will be subjected to during operation. For example, in the oil and gas industry, the minimum wall thickness for steel pipes is usually specified by industry standards such as API 5L or ASME B31.3. These standards take into account factors such as the pipe's diameter, the material's yield strength, and the maximum pressure it will be exposed to. In other applications, such as structural or mechanical engineering, the minimum wall thickness for steel pipes is determined based on factors such as the pipe's intended load-bearing capacity, the desired safety factor, and any applicable building codes or regulations. It is important to consult the appropriate industry standards, codes, or regulations to determine the specific minimum wall thickness requirements for steel pipes in a given application.

Q: What are the different methods of pipe insulation for steel pipes?: Various methods can be employed to insulate steel pipes, each offering distinct advantages and suitability for specific applications. Some commonly utilized techniques encompass: 1. Fiberglass insulation: Esteemed as a highly favored pipe insulation method, fiberglass insulation comprises fine glass fibers and is obtainable in diverse formats like rolls, sheets, or pre-formed sections. It boasts a lightweight nature, effortless installation, and exceptional thermal insulation attributes. 2. Foam insulation: Another efficacious means of insulating steel pipes is foam insulation, which can be procured in various forms including rigid foam boards or spray foam. It is renowned for its high insulating capacity and its ability to seal gaps and cracks, thereby enhancing energy efficiency. 3. Rubber insulation: Rubber insulation, also referred to as elastomeric insulation, is extensively employed in HVAC systems to insulate steel pipes. It possesses flexibility, durability, and resistance to moisture, making it suitable for both indoor and outdoor applications. Additionally, rubber insulation offers commendable thermal and acoustic insulation properties. 4. Polyethylene insulation: Polyethylene insulation presents a cost-effective alternative for insulating steel pipes. It can be found in diverse formats such as foam tubes or molded sections and is effortless to install. Polyethylene insulation provides commendable thermal insulation, safeguards against condensation, and exhibits resistance to water vapor diffusion. 5. Cellular glass insulation: Cellular glass insulation, a rigid insulation material produced from crushed glass and a foaming agent, is acknowledged for its exceptional thermal insulation attributes as well as its resistance to moisture, fire, and chemicals. It is commonly employed in cryogenic and high-temperature applications. When selecting the appropriate pipe insulation method for steel pipes, it is imperative to consider factors such as temperature, moisture conditions, and project-specific requirements. Seeking guidance from a professional or insulation expert can aid in determining the optimal insulation method based on the specific needs and conditions of the project.

Q: Stainless steel tube, also known as why tube?: The longitudinal section can be divided into equal section tube and variable cross section tubeThe variable section tube has a conical tube, a stepped tube and a periodically cross section pipe, etc.

Q: How are steel pipes used in the renewable energy sector?: Steel pipes are widely used in the renewable energy sector for various applications. They are commonly used for the construction of wind turbine towers, providing structural support and stability. Steel pipes are also used in the construction of solar power plants, where they are utilized for the installation of solar panels, mounting structures, and support systems. Additionally, steel pipes are employed in geothermal energy projects, helping to extract and transfer hot water or steam from underground reservoirs. Overall, steel pipes play a crucial role in the renewable energy sector by facilitating the efficient generation and transmission of clean energy.

Q: Are steel pipes suitable for solar power plants?: Yes, steel pipes are suitable for solar power plants. They are commonly used in various applications within the plant, such as carrying water for cooling systems and transporting steam in concentrated solar power (CSP) plants. Steel pipes offer durability, strength, and resistance to corrosion, making them a reliable choice for the demanding conditions of a solar power plant.

Q: How are steel pipes protected from corrosion in corrosive environments?: Steel pipes are protected from corrosion in corrosive environments through various methods such as applying protective coatings, using cathodic protection systems, and implementing corrosion inhibitors.

Q: What is the difference between API 5L and ASTM A106 steel pipes?: API 5L and ASTM A106 are two commonly used specifications for seamless carbon steel pipe. While both specifications cover similar materials, they have different requirements for chemical composition, manufacturing processes, mechanical properties, and testing. API 5L is a specification created by the American Petroleum Institute (API) for line pipe used in oil and gas transportation. It covers seamless and welded steel pipe suitable for use in conveying gas, water, and oil in the natural gas and petroleum industries. API 5L specifies the minimum requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of seamless and welded steel pipes, with different chemical composition and mechanical properties. On the other hand, ASTM A106 is a specification developed by the American Society for Testing and Materials (ASTM) for seamless carbon steel pipe for high-temperature service. It covers seamless carbon steel pipe for high-temperature service in NPS 1/8" to NPS 48" inclusive, with nominal (average) wall thickness as given in ANSI B36.10. ASTM A106 provides requirements for chemical composition, manufacturing processes, mechanical properties, and testing. One key difference between API 5L and ASTM A106 is the intended use of the pipe. API 5L is specifically designed for transmission of liquid and gas, while ASTM A106 is used for high-temperature service. The chemical composition and mechanical properties of the steel may also vary between the two specifications, depending on the grade and type of steel being used. In summary, while both API 5L and ASTM A106 are widely used specifications for carbon steel pipe, they have distinct differences in terms of their intended use, chemical composition, manufacturing processes, mechanical properties, and testing requirements. It is important to carefully consider these factors when selecting the appropriate steel pipe for a specific application.

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