seamless 3PE steel pipe external coating

seamless 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: How are steel pipes protected against electrolytic corrosion?: Various methods can be employed to safeguard steel pipes against electrolytic corrosion. One commonly utilized approach involves the application of protective coatings on the pipe's surface. These coatings serve as a barrier, effectively preventing direct contact between the steel and the surrounding environment, which may contain moisture and other corrosive substances. Epoxy, polyethylene, and zinc are frequently employed coatings for this purpose. Another means of protection involves the utilization of sacrificial anodes. These anodes, typically fabricated from a metal that exhibits greater reactivity than steel, such as zinc or aluminum, are affixed to the steel pipes. Over time, as these anodes corrode, they willingly sacrifice themselves in order to shield the steel. This process, known as cathodic protection, is exceptionally successful in deterring electrolytic corrosion. Aside from coatings and sacrificial anodes, proper insulation and electrical isolation play a pivotal role in preventing electrolytic corrosion of steel pipes. Insulating materials, such as rubber or plastic sleeves, are employed to prevent direct contact between the pipes and other metals or electrolytes. Electrical isolation can be achieved through the use of dielectric unions or insulating flanges, which effectively obstruct the flow of electric current between different sections of the pipeline. Furthermore, regular maintenance and inspection are essential components of protecting steel pipes against electrolytic corrosion. Regular checks to assess coating integrity, anode condition, and potential electrical leakage are crucial in maintaining the ongoing efficacy of the corrosion protection system. In conclusion, a combination of protective coatings, sacrificial anodes, insulation, electrical isolation, and regular maintenance is indispensable in safeguarding steel pipes against electrolytic corrosion. By implementing these measures, the lifespan of steel pipes can be substantially prolonged, thereby ensuring the safety and reliability of various applications, including water distribution, oil and gas transportation, and structural support in buildings and infrastructure.

Q: DN80 seamless steel tube, what is the standard thickness?: Commonly used DN80 seamless steel pipe caliber should be 89mm*4mm.

Q: How does the price of steel pipes vary based on size and grade?: The price of steel pipes tends to vary based on their size and grade. Generally, larger pipes and higher-grade steel tend to have higher prices due to the increased raw material and manufacturing costs involved. However, market demand and supply dynamics can also play a role in the price fluctuations.

Q: How are steel pipes used in the manufacturing of chemical processing equipment?: Steel pipes are commonly used in the manufacturing of chemical processing equipment due to their durability, resistance to corrosion, and ability to handle high-pressure and high-temperature conditions. These pipes are used to transport various chemicals, gases, and liquids within the equipment, ensuring safe and efficient operations. They are also utilized for the distribution of heat transfer fluids, such as steam or hot water, to maintain optimal temperatures during chemical reactions.

Q: Are steel pipes suitable for use in sewage treatment plants?: Yes, steel pipes are suitable for use in sewage treatment plants. Steel pipes are durable, corrosion-resistant, and have a long lifespan, making them ideal for handling the harsh conditions and corrosive substances found in sewage systems. Additionally, steel pipes offer high strength and are capable of withstanding high-pressure flows, making them a reliable choice for sewage treatment plants.

Q: How do you protect steel pipes from rusting?: To protect steel pipes from rusting, several methods can be employed. One common approach is to apply a protective coating to the pipes. This can be done by using paint or other types of protective coatings designed specifically for metal surfaces. The coating acts as a barrier between the steel and the elements, preventing moisture and oxygen from coming into contact with the metal and causing rust. Another method is to galvanize the steel pipes. Galvanizing involves coating the pipes with a layer of zinc, which creates a protective barrier that prevents rust from forming. This process is commonly used for outdoor applications or in environments where the pipes are exposed to moisture. Regular maintenance is also crucial in protecting steel pipes from rusting. This includes inspecting the pipes for any signs of corrosion or damage and promptly addressing any issues that are found. Additionally, keeping the pipes clean and dry can help prevent rust formation. In some cases, installing sacrificial anodes can provide additional protection against rust. Sacrificial anodes are made of a more reactive metal, such as zinc or magnesium, and are attached to the steel pipes. These anodes corrode instead of the steel, sacrificing themselves to protect the pipes from rust. Lastly, proper storage and handling of steel pipes is essential. This means storing them in a dry, well-ventilated area, away from moisture and humidity. It is also important to handle the pipes with care to avoid any scratches or damage to the protective coatings. By employing these methods and practices, steel pipes can be effectively protected from rusting, ensuring their longevity and durability.

Q: Are there specifications for scaffold steel pipe with 48mm * 3.2mm?: Previously used steel pipe GB 51*3.0mm, the latest national standard JGJ130-2001 stipulates that the use of steel pipe for construction projects need to be 48*3.5mm specifications, the wall thickness should be 3.5mm square for qualified products.

Q: Can steel pipes be used for underground drainage systems?: Yes, steel pipes can be used for underground drainage systems.

Q: Can steel pipes be used for underground water wells?: Yes, steel pipes can be used for underground water wells. Steel pipes are commonly used for drilling water wells due to their durability, strength, and resistance to corrosion. However, it is important to ensure that the steel pipes are properly coated and protected to prevent any contamination of the underground water source.

Q: What's the difference between No. 20 steel pipe and 27SiMn Steel Pipe?: Cold plastic deformation and for bending, rolling, bending and hammer arch processing, arc welding and contact welding welding performance is good, when the thickness is small, prone to strict requirement of shape crack or complex shape parts. The cold or normalizing condition of cutting is better than that of annealing. It is generally used to make the material with little force and high toughness.

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