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: How do you calculate the pipe volume flow rate for steel pipes?: The pipe volume flow rate for steel pipes can be calculated using the formula: V = A * V_avg, where V is the volume flow rate, A is the cross-sectional area of the pipe, and V_avg is the average velocity of the fluid flowing through the pipe.

Q: What are the safety considerations when working with steel pipes?: When working with steel pipes, there are several important safety considerations to keep in mind. Firstly, it is crucial to wear appropriate personal protective equipment (PPE). This includes safety glasses or goggles to protect the eyes from flying debris or sparks, gloves to protect the hands from sharp edges or hot surfaces, and steel-toed boots to protect the feet from falling objects or heavy equipment. Additionally, wearing a hard hat is recommended to protect the head from potential falling objects or overhead hazards. Next, it is important to be aware of the weight and size of steel pipes. Handling heavy pipes can put strain on the back and muscles, so it is essential to use proper lifting techniques and seek assistance when necessary. Using lifting equipment, such as cranes or forklifts, can also help prevent injuries related to heavy lifting. Another safety consideration is the risk of cuts or punctures. Steel pipes can have sharp edges or burrs, so it is important to handle them with care and wear appropriate gloves to reduce the risk of injury. Inspecting pipes for any defects or sharp edges before working with them is also recommended. Furthermore, working with steel pipes may involve welding or cutting, which can produce sparks, heat, and fumes. It is crucial to work in a well-ventilated area or use proper ventilation equipment to ensure the removal of harmful gases or fumes. Fire safety precautions should also be taken, such as having fire extinguishers nearby and following proper procedures for hot work. Lastly, it is important to be aware of potential hazards associated with working at heights or in confined spaces. When working on elevated platforms or scaffolding, fall protection measures, such as safety harnesses or guardrails, should be in place. In confined spaces, proper ventilation and monitoring for hazardous gases are essential to prevent asphyxiation or exposure to toxic substances. Overall, by following these safety considerations and adhering to proper procedures, the risk of accidents or injuries when working with steel pipes can be significantly reduced.

Q: Fastener type steel pipe scaffold external parts name: Even the wall piece the upright rod is connected with the main structure together, available steel tube, fastener or embedded part. Rigid wall, also can be used as a flexible reinforced wall connecting piece of the tie bar. , 5.The base in the form of plug-in and coat type two, inserted a D1 diameter rod diameter than 2mm, diameter D2 rod diameter than 2mm type jacket.

Q: How do you clean and maintain steel pipes?: To clean and maintain steel pipes, start by removing any dirt, dust, or debris using a soft cloth or brush. Then, use a mild detergent mixed with water to wash the pipes thoroughly. Rinse them with clean water and dry them completely to prevent rusting. Regularly inspect for any signs of corrosion or damage, and promptly address any issues. Applying a rust-resistant coating can also help in maintaining the pipes' longevity.

Q: Can steel pipes be used for wastewater treatment?: Yes, steel pipes can be used for wastewater treatment. Steel pipes are commonly used in the construction of wastewater treatment plants and systems due to their durability, strength, and resistance to corrosion. They are especially suitable for transporting and distributing wastewater, as they can withstand high pressure and temperature variations. Steel pipes can also be coated or lined with materials that provide additional protection against corrosion and chemical reactions with the wastewater. However, it is important to ensure that the steel pipes are properly maintained, inspected, and replaced when necessary to prevent any potential leaks or failures that could compromise the wastewater treatment process.

Q: What are the different factors affecting the flow rate of steel pipes?: The flow rate of steel pipes can be affected by multiple factors. Let's explore some of these factors: 1. Pipe diameter: The size of the pipe plays a significant role in determining the flow rate. Generally, larger pipes allow for greater flow rates as they provide a larger cross-sectional area for the fluid to pass through. 2. Pipe length: The length of the pipe also impacts the flow rate. Longer pipes tend to have higher friction losses, which can decrease the flow rate. Moreover, longer pipes may require higher pressure to maintain the desired flow rate. 3. Fluid viscosity: The viscosity of the fluid passing through the pipe is an important consideration. Viscous fluids, such as heavy oils, exhibit higher resistance to flow, resulting in lower flow rates. Conversely, less viscous fluids, like water, encounter lower resistance and can achieve higher flow rates. 4. Pressure difference: The pressure difference across the pipe serves as a driving force for flow. A higher pressure difference will lead to a higher flow rate, while a lower pressure difference will reduce the flow rate. 5. Surface roughness: The roughness of the inner pipe surface influences the flow rate. Rough surfaces generate more turbulence and friction, thus resulting in a lower flow rate. Conversely, smoother surfaces minimize turbulence and friction, allowing for a higher flow rate. 6. Temperature: The temperature of the fluid can impact its viscosity and density, which subsequently affect the flow rate. Higher temperatures generally decrease the viscosity of fluids, leading to increased flow rates. 7. Pipe material: The choice of pipe material impacts the flow rate due to varying roughness and resistance. Steel pipes, for instance, typically possess a smoother inner surface compared to pipes made of other materials, resulting in higher flow rates. 8. Pipe fittings and bends: The presence of fittings, valves, and bends in the pipe can cause flow restrictions and pressure drops, which can decrease the flow rate. Proper design and placement of these components can minimize their impact on the flow rate. Understanding the interplay of these factors is essential for the design and optimization of fluid flow systems involving steel pipes.

Q: How are steel pipes insulated against heat loss?: There are multiple ways to insulate steel pipes to prevent heat loss. One widely used method involves utilizing insulation materials like mineral wool or fiberglass wraps. These materials are wrapped around the pipes, forming a barrier that reduces heat transfer. Another approach involves directly applying insulation coatings like foam or rubber coatings onto the pipe's surface. These coatings create a protective layer that minimizes heat loss. Additionally, thermal tape or heat-resistant tape can be employed to seal any gaps or joints in the insulation, ensuring a continuous barrier against heat loss. In summary, effectively insulating steel pipes is crucial to maintaining the desired temperature of the fluid or gas being transported and enhancing energy efficiency across diverse industries.

Q: Are steel pipes suitable for underground sewage systems?: Yes, steel pipes are suitable for underground sewage systems. They are durable, strong, and resistant to corrosion, making them a reliable choice for carrying sewage underground. Additionally, steel pipes have a long lifespan and can withstand the pressure and weight of the surrounding soil, making them a suitable option for underground sewage systems.

Q: Are steel pipes suitable for use in food processing industries?: Yes, steel pipes are suitable for use in food processing industries. Steel pipes are highly durable, resistant to corrosion, and can withstand high temperatures and pressures, making them ideal for transporting various food products and fluids. Additionally, steel pipes are easy to clean, maintain hygiene standards, and comply with food safety regulations, making them a reliable choice for the food processing industry.

Q: Are metal spiral tubes the same as metal bellows?: Hello. The two are not the same. The difference lies in. The pitch of a spiral pipe is much larger than that of a bellows. The maximum material thickness of the spiral tube is much thicker than that of the bellow. The diameter of a spiral tube can be very large. But the bellows can't be too big in diameter.

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