Outer Diameter: 2"-56" (60.3mm--1422mm)
3PE coating steel pipes are available in a wide range of outer diameters to suit various applications in the oil, gas, and water industries. The outer diameter specifications typically range from 2 inches (60.3mm) up to 56 inches (1422mm). This broad range allows for flexibility in pipeline design and construction to meet specific project requirements.
The smaller diameter pipes, ranging from 2 inches to 12 inches, are commonly used in distribution networks and smaller-scale applications. Medium-sized pipes with diameters between 14 inches and 30 inches are often employed in gathering systems and intermediate transmission lines. Large diameter pipes, from 32 inches up to 56 inches, are primarily used in major transmission pipelines for oil and gas transport over long distances.
How to choose the appropriate outer diameter for a 3PE coated steel pipe?
1. Flow capacity requirements.
2. Operating pressure.
3. Installation method (e.g., trenching, horizontal directional drilling).
4. Environmental conditions.
5. Project budget.
Engineers and project managers must carefully evaluate these factors to determine the optimal pipe diameter that balances performance, cost-effectiveness, and longevity of the pipeline system.
It's worth noting that the actual outer diameter of 3PE coated pipes will be slightly larger than the nominal pipe size due to the additional thickness of the coating layers. This difference is typically accounted for in pipeline design and installation planning.
Thickness: SCH10-SCH160 (6.35mm-59.54mm)
The wall thickness of 3PE coating steel pipes is a critical factor in determining the pipe's strength, pressure rating, and overall performance. The thickness specifications for these pipes generally range from Schedule 10 (SCH10) to Schedule 160 (SCH160), corresponding to wall thicknesses from approximately 6.35mm to 59.54mm.
The Schedule (SCH) system is a standardized method for specifying pipe wall thickness, with higher schedule numbers indicating greater wall thickness.
Here's a brief overview of common schedule ranges and their typical applications:
- SCH10-SCH40: Often used for low to moderate pressure applications and in less demanding environments.
- SCH60-SCH80: Suitable for higher pressure systems and more challenging operating conditions.
- SCH100-SCH160: Used in high-pressure applications and extreme environments where maximum strength and durability are required.
The selection of appropriate wall thickness depends on several factors:
1. Internal pressure: Higher operating pressures require thicker pipe walls to withstand the stress.
2. External loads: Soil pressure, traffic loads, and other external forces influence the required wall thickness.
3. Corrosion allowance: In corrosive environments, additional wall thickness may be specified to account for potential material loss over time.
4. Safety factors: Design codes and regulations often mandate minimum safety factors that affect wall thickness calculations.
5. Material properties: The strength and ductility of the steel grade used influence the required wall thickness.
It's important to note that the wall thickness specification refers to the base steel pipe before the application of the 3PE coating. The coating layers will add to the overall thickness of the pipe, but they are not considered part of the structural wall thickness.
Engineers use standardized formulas and design codes, such as ASME B31.4 for liquid hydrocarbon pipelines or ASME B31.8 for gas transmission pipelines, to calculate the minimum required wall thickness based on the specific project parameters. These calculations ensure that the selected pipe can safely withstand the anticipated stresses throughout its service life.
Length: 6m-18m
3PE coating steel pipes are typically manufactured and supplied in lengths ranging from 6 meters to 18 meters. This range of lengths offers flexibility in transportation, handling, and installation while balancing factors such as production efficiency and project requirements.
The most common standard lengths for 3PE coated pipes include:
1. 6 meters (approximately 20 feet).
2. 12 meters (approximately 40 feet).
3. 18 meters (approximately 60 feet).
It's worth noting that while standard lengths are commonly used, many manufacturers offer the ability to produce custom lengths within the 6-18 meter range to meet specific project needs. This flexibility can be particularly valuable for complex pipeline routes or when working with unique installation constraints.
During the planning and design phase of a pipeline project, engineers and project managers must carefully consider the optimal pipe length that balances transportation efficiency, installation ease, and overall project costs. The selected length should minimize the number of field joints while ensuring safe and efficient handling throughout the supply chain and construction process.
3PE Coating Steel Pipe For Sale
When purchasing 3PE coating steel pipes, it's crucial to provide detailed specifications to ensure you receive the correct product for your application. Key information to include in your inquiry or purchase order includes:
- Pipe material grade (e.g., API 5L X60, X65, X70)
- Outer diameter and wall thickness
- Pipe length
- End preparation (e.g., beveled ends for welding)
- Coating specifications (including layer thicknesses and any special requirements)
- Quantity required
- Delivery timeline and location
- Any specific testing or documentation requirements
LONGMA GROUP's products offer customization options for diameter, length, and coating thickness to meet the unique needs of each project. If you are choosing your 3PE coating steel pipe manufacturers, welcome to contact us at info@longma-group.com.
When selecting a supplier for 3PE coating steel pipes, it's advisable to request product samples and test reports to verify the quality and performance of the pipes before placing a large order. Additionally, consider visiting the manufacturer's facility to inspect their production processes and quality control measures firsthand.
The global market for 3PE coating steel pipes is competitive, with suppliers from various countries offering these products. Major steel pipe manufacturing regions include China, India, Europe, and North America. When sourcing internationally, be sure to factor in transportation costs, import duties, and potential logistical challenges into your procurement decision.
As the demand for corrosion-resistant pipelines continues to grow in industries such as oil and gas, water treatment, and chemical processing, the availability and technology of 3PE coating steel pipes are likely to expand further. Staying informed about the latest developments in coating technologies and pipe manufacturing processes can help you make the best purchasing decisions for your projects.
References
1. American Petroleum Institute. (2018). API Specification 5L: Specification for Line Pipe. Washington, DC: API Publishing Services.
2. NACE International. (2017). SP0394-2017: Application, Performance, and Quality Control of Plant-Applied, Fusion-Bonded Epoxy External Pipe Coating. Houston, TX: NACE International.
3. International Organization for Standardization. (2015). ISO 21809-1:2018: Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems — Part 1: Polyolefin coatings (3-layer PE and 3-layer PP). Geneva, Switzerland: ISO.
4. Guan, S. W. (2015). 100% solids polyurethane and polyurea coatings technology. In A. S. H. Makhlouf & D. Scharnweber (Eds.), Handbook of Nanoceramic and Nanocomposite Coatings and Materials (pp. 235-270). Butterworth-Heinemann.
