seamless 2PE steel pipe external coating

seamless 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: 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 is the process of spiral steel tube production?: X ray flaw detection: 100% X ray industrial television inspection of internal and external weld seams, and image processing system is adopted to ensure the sensitivity of flaw detection.8. press test: the steel pipe is tested by root test on the water pressure test machine to ensure the test pressure of the steel pipe to meet the standard requirement.9. chamfering flat head: the qualified steel pipe is processed at the end of the pipe to achieve the required size of the end of the pipe10. final inspection: ultrasonic and X ray inspection, and magnetic particle inspection at the end of pipe to check for welding problems and pipe end defects.11., marking: qualified steel pipe for oil, in order to prevent corrosion, and according to user requirements for marking.

Q: How are steel pipes used in fire protection systems?: Fire protection systems rely on the inclusion of steel pipes, which serve as an essential component for the distribution of water and fire suppressants within buildings. These pipes are renowned for their robustness, longevity, and ability to endure extreme temperatures, rendering them optimal for withstanding the harsh conditions associated with fires. Within fire protection systems, steel pipes are commonly utilized to establish an interconnected network of pipes responsible for supplying water to sprinkler heads or fire hydrants throughout a building. This network guarantees that water is readily accessible to suppress or extinguish fires during emergencies. One of the primary advantages of steel pipes in fire protection systems is their capacity to withstand the elevated pressure and flow rates necessary for effective fire suppression. Steel pipes can handle forceful water flow with ease, enabling prompt and efficient distribution of water to affected areas, thereby aiding in the control and extinguishing of fires in the shortest possible time. Additionally, steel pipes possess an inherent resistance to corrosion, a crucial attribute for preserving the integrity of fire protection systems over time. Corrosion has the potential to weaken pipes, leading to leaks or complete failure, which can prove catastrophic during a fire incident. However, steel pipes possess an extended lifespan and require minimal maintenance when compared to other pipe materials, ensuring the longevity and dependability of the system for many years to come. Moreover, steel pipes are frequently selected for use in fire protection systems due to their fire-resistant properties. Steel inherently possesses the ability to withstand high temperatures without deformation or compromising its structural integrity. This characteristic is of utmost importance in fire protection systems, as it enables the pipes to remain intact and continue delivering water even amidst a fire, ensuring the safety of occupants and minimizing damage to the building. In conclusion, steel pipes hold a pivotal role in fire protection systems by guaranteeing the reliable and efficient distribution of water or fire suppressants. Their strength, durability, resistance to high temperatures, and corrosion resistance make them the ideal choice for effectively combating fires and safeguarding lives and property.

Q: How are steel pipes used in the manufacturing of railways?: Steel pipes are commonly used in the manufacturing of railways for various purposes. They are used for the construction of railway tracks, providing a strong and durable foundation. Steel pipes are also used in the manufacturing of railway bridges and tunnels, ensuring structural integrity and support. Additionally, steel pipes are utilized for the transportation of fluids and gases within the railway system, such as fuel or water.

Q: What are the different methods of threading steel pipes?: There are several methods of threading steel pipes, including manual threading, machine threading, and dielectric threading. Manual threading involves using a manual pipe threader or a handheld die to create the threads on the pipe. Machine threading, on the other hand, utilizes power-driven machines that can thread multiple pipes simultaneously, increasing efficiency and accuracy. Dielectric threading is a specialized method that uses a high-frequency electrical current to generate threads on the pipe, which is commonly used for stainless steel pipes.

Q: Are steel pipes suitable for underground installations?: Yes, steel pipes are suitable for underground installations. Steel pipes are known for their durability, strength, and resistance to corrosion, making them ideal for underground use. They can withstand the pressure from the surrounding soil and are able to handle heavy loads, making them a reliable choice for underground installations such as drainage systems, water supply lines, and underground utilities.

Q: How are steel pipes used in the manufacturing of food and beverage processing plants?: Steel pipes are commonly used in food and beverage processing plants for various purposes such as transporting liquids, gases, and steam. They are used to create a network of pipelines that facilitate the movement of raw materials, ingredients, and finished products throughout the manufacturing process. Steel pipes are chosen for their durability, corrosion resistance, and ability to withstand high pressure and temperature conditions, ensuring the safety and efficiency of food and beverage production.

Q: What are the safety considerations while handling steel pipes?: When handling steel pipes, some key safety considerations include wearing appropriate personal protective equipment (PPE) such as gloves, safety glasses, and steel-toe boots to protect against potential injuries. It is important to be cautious of the weight and size of the pipes, using proper lifting techniques and equipment to prevent strains or accidents. Additionally, workers should be mindful of the sharp edges and potential for cuts or punctures, ensuring they have a clear and organized workspace to minimize the risk of tripping or falling. Regular inspections of the pipes for any damages or defects are also crucial to prevent accidents and maintain a safe working environment.

Q: What is the difference between steel pipes and fiberglass-reinforced pipes?: The main difference between steel pipes and fiberglass-reinforced pipes lies in their composition and structural properties. Steel pipes are made primarily of iron and carbon, which provide high strength and durability. On the other hand, fiberglass-reinforced pipes consist of a composite material that combines a resin matrix with glass fibers, offering excellent corrosion resistance and high tensile strength. Additionally, steel pipes are heavier and require more maintenance, while fiberglass-reinforced pipes are lighter, easier to install, and have a longer lifespan.

Q: Are steel pipes resistant to impact or external forces?: Steel pipes are renowned for their resistance to impact and external forces. Their high strength and durability render them perfect for a wide range of applications, notably in the realm of piping. These pipes possess the remarkable ability to endure external forces, encompassing impact, pressure, and vibrations. Consequently, industries necessitating steadfast and robust piping systems, like oil and gas, construction, and infrastructure, frequently opt for steel pipes. Furthermore, when confronted with extreme conditions, steel pipes are less prone to cracking or breaking in comparison to other materials. Nonetheless, the extent of resistance to impact and external forces may hinge upon the specific grade and thickness of the steel employed in the pipes.

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