seamless 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: The difference between 12Cr1MoVG alloy steel tube and 15CrMo: With this kind of steel manufacturing products, usually by heat treatment (normalizing and tempering); parts made before use, usually need to go through refining or chemical surface treatment (carburizing and nitriding), surface quenching or high-frequency quenching treatment. Therefore, according to the chemical composition (mainly carbon content), heat treatment process and use of different, such steel can be roughly divided into carburizing, quenching and tempering and nitriding steel three.

Q: Are steel pipes suitable for use in coastal areas?: Yes, steel pipes are suitable for use in coastal areas. Steel is highly resistant to corrosion and can withstand the harsh environmental conditions typically found in coastal regions, such as saltwater spray and high humidity. Additionally, steel pipes offer excellent structural strength, making them well-suited for various applications including marine construction, offshore oil and gas platforms, and coastal infrastructure projects.

Q: Why can't stainless steel be put together with carbon steel tube?: The bimetallic corrosion is terminated only when one of the three conditions is changed. Galvanic corrosion is related to the contact area of bimetal and the greater the contact area. Corrosion is less. The driving force of galvanic corrosion is the potential difference.[galvanic corrosion] refers to two or more than two kinds of electrode potential of metal in the corrosive medium, and contact with each other caused by electrochemical corrosion, also known as contact corrosion or double metal corrosion.

Q: What are the different methods of protecting steel pipes from external damage?: There are several methods of protecting steel pipes from external damage, including coating the pipes with a corrosion-resistant material such as epoxy or polyethylene, applying a layer of protective tape, installing a cathodic protection system, using concrete or rock shielding, and implementing measures to prevent soil movement or impact damage.

Q: How are steel pipes used in the construction of dams?: Steel pipes are commonly used in the construction of dams for various purposes such as water diversion, drainage, and foundation reinforcement. They are used to transport water from one area to another, diverting it away from the construction site or controlling its flow within the dam. Steel pipes are also employed for drainage systems to prevent water accumulation and to ensure the stability of the dam structure. Additionally, they play a crucial role in reinforcing the foundation of the dam, providing strength and support to the overall structure.

Q: How are steel pipes tested for quality and strength?: Steel pipes are tested for quality and strength through various methods, including destructive and non-destructive testing. Destructive tests involve subjecting samples to extreme conditions such as tension, compression, or bending to assess their mechanical properties. Non-destructive tests, on the other hand, utilize techniques like ultrasonic inspection, magnetic particle testing, and radiographic examination to detect any defects or anomalies without damaging the pipes. These rigorous testing procedures ensure that steel pipes meet the required standards and can withstand the intended applications.

Q: Can steel pipes be used for oil transportation?: Indeed, steel pipes find application in the transportation of oil. In the oil and gas industry, steel pipes are widely utilized to transport crude oil, petroleum products, and natural gas. The reason behind their popularity lies in their robustness, endurance, and resistance to corrosion. Steel pipes possess the capability to endure high-pressure conditions, making them suitable for both onshore and offshore oil transportation. Moreover, by welding steel pipes together, extensive pipelines can be constructed, thereby providing a cost-efficient method to transport oil across long distances. In conclusion, steel pipes serve as a dependable and effective option for oil transportation.

Q: DN150 welded steel tubes one meter multiple: The theoretical weight table of welded steel pipe (Kg) can be checked, and the outer diameter and wall thickness can be measured according to the formula.For example: DN150 welded steel pipe, diameter 165mm, thickness 4.5mm, weight kg per meter.Welded steel pipe theoretical weight (Kg/m) = (165-4.5) * 4.5 * 0.02466=17.81Kg

Q: How are steel pipes used in bridge construction?: Steel pipes are commonly used in bridge construction as piling or foundation elements. They are driven into the ground to provide support and stability to the bridge structure. Additionally, steel pipes can be used as structural members in the bridge's superstructure, such as for the construction of bridge piers or trusses, due to their high strength and durability.

Q: How are steel pipes used in the manufacturing of power distribution systems?: Steel pipes are commonly used in the manufacturing of power distribution systems as they provide a reliable and durable solution for transporting and protecting electrical cables. They are used to create conduits that house the cables, ensuring safe and efficient transmission of electricity throughout the system. Steel pipes also offer resistance to corrosion, fire, and extreme weather conditions, making them a suitable choice for power distribution systems.

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