welded 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 underground cooling systems?: Yes, steel pipes can be used for underground cooling systems. Steel pipes are often preferred for underground applications due to their strength, durability, and resistance to corrosion. They can effectively withstand the pressure and temperature requirements of cooling systems and can be used for transferring chilled water or other coolants underground.

Q:How do steel pipes compare to other materials in terms of cost?: Steel pipes are generally more cost-effective than many other materials used for pipes, thanks to their durability, strength, and availability. While initial costs may vary depending on factors like size and grade, steel pipes offer a longer lifespan and require less maintenance compared to other materials, making them a cost-efficient choice in the long run.

Q:How are steel pipes used in the manufacturing of agricultural machinery?: Steel pipes are commonly used in the manufacturing of agricultural machinery for various purposes such as structural support, fluid transportation, and hydraulic systems. They provide durability and strength to the machinery, allowing it to withstand the heavy loads and harsh conditions associated with agricultural activities. Additionally, steel pipes are often used to create the framework and chassis of the machinery, ensuring its stability and longevity in the field.

Q:Water, gas, steel pipes, thick steel wire means?: Water pipes, gas pipes and other collectively known as water gas pipe, generally galvanized steel pipe, so it can be called water and gas pipe. Most of them are welded steel tubes made of low carbon steel.

Q:What are the common methods for inspecting the condition of steel pipes?: Steel pipes can be inspected using a variety of methods to ensure their condition and integrity. These methods aim to identify any issues or defects that could potentially affect the pipes. 1. Visual Inspection: Inspectors thoroughly examine the pipes visually to spot any visible signs of damage such as corrosion, cracks, or leaks. They may employ tools like flashlights, mirrors, or borescopes to reach difficult areas. 2. Ultrasonic Testing: This method utilizes high-frequency sound waves to detect defects within the steel pipes. A transducer emits sound waves, and disruptions or reflections in these waves can indicate potential issues like cracks or thinning of the pipe walls. 3. Magnetic Particle Testing: Primarily used to detect surface cracks or defects, this technique applies a magnetic field to the pipe. Fine iron particles are then applied to the surface, and they accumulate at areas with surface defects, making them clearly visible. 4. Eddy Current Testing: This non-destructive testing method detects surface and near-surface defects in steel pipes. It involves passing an alternating current through a coil, inducing eddy currents in the pipe. Disruptions or changes in these eddy currents can indicate defects like corrosion or cracks. 5. Radiographic Testing: X-rays or gamma rays are used in this method to inspect the internal structure of steel pipes. X-ray film or a digital detector is placed on one side of the pipe, while the X-ray source is positioned on the other side. The rays penetrate the steel, and any irregularities or defects can be identified on the film or through digital imaging. 6. Dye Penetrant Inspection: This technique is employed to detect surface-breaking defects in steel pipes. A dye penetrant is applied to the pipe's surface, and after a specified time, a developer is used to draw out the dye from any defects, making them easily visible. Whether used individually or in combination, these methods provide a comprehensive inspection of steel pipes, ensuring their reliability and safety in industries like oil and gas, construction, and manufacturing.

Q:How do you connect steel pipes together?: Steel pipes can be connected together using various methods such as welding, threading, flanges, or mechanical couplings. Welding involves fusing the ends of the pipes together using heat, while threading involves cutting grooves into the pipe ends and screwing them together. Flanges are used to connect pipes using bolts and gaskets, providing a secure and leak-proof joint. Mechanical couplings utilize compression fittings or clamps to connect pipes without the need for welding or threading. The appropriate method depends on the specific application, pipe size, and project requirements.

Q:What are the factors affecting the durability of steel pipes?: There are several factors that can affect the durability of steel pipes. These include corrosion, temperature fluctuations, mechanical stress, and exposure to chemicals or abrasive materials. Additionally, the quality of the steel used in the pipes, the design and construction of the piping system, and proper maintenance and inspection practices can also impact their durability.

Q:How are steel pipes used in construction?: Steel pipes are commonly used in construction for various purposes such as structural support, plumbing, and transportation of fluids and gases. They are used in building frameworks, bridges, and underground infrastructure, providing strength, durability, and flexibility. Steel pipes are often employed in plumbing systems for water supply and drainage. Additionally, they serve as conduits for conveying gas, oil, and other substances. Their versatility and strength make steel pipes an essential component in modern construction projects.

Q:What are the different types of coatings used for internal lining of steel pipes?: There are several types of coatings commonly used for the internal lining of steel pipes, including epoxy coatings, polyurethane coatings, and cement mortar linings. These coatings are applied to protect the steel pipes from corrosion, improve the flow of fluids, and enhance the longevity and durability of the pipes.

Q:What are the different types of steel pipe coatings for corrosion protection?: Some of the different types of steel pipe coatings for corrosion protection include epoxy coatings, polyethylene coatings, zinc coatings, and coal tar enamel coatings.

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