Line Pipe

shows-pe-coated-pipe-line-pipe-API-5L-pipeline-coating

Overview of Line Pipe

Line pipe, a crucial component in the transportation of essential resources, is a type of steel pipe specifically designed for conveying materials such as petroleum, natural gas, oil, and water across vast distances. Manufactured from high-strength carbon steel and adhering to stringent metallurgical specifications set by the American Petroleum Institute (API), line pipes are renowned for their durability, strength, and ability to withstand high pressures. When you choose our line pipes, you’re investing in a product that guarantees safe, efficient, and reliable transportation of resources. With UNIACERO, you benefit from a comprehensive range of line pipes that cater to diverse applications, ensuring optimal performance and longevity. Our products meet the highest industry standards, and we provide a variety of welded tubular solutions for different conditions.

Available Sizes of Line Pipe

schematic-diagram-of-pipe-dimension

Understanding the diverse needs of our clients, we offer line pipes in an extensive range of diameters, from as small as 2 inches to as large as 48 inches. The size and diameter of a line pipe play a pivotal role in determining its capacity and the volume of material it can transport. Additionally, the wall thickness of our line pipes is meticulously crafted to meet the maximum operating pressure requirements of various pipelines, based on established standards and regulations. With UNIACERO, you can be assured of finding the perfect size and thickness tailored to your specific project needs, ensuring efficient flow and maximum safety.

API SPECIFICATION 5L
Permissible Specified Outside Diameter and Specified Wall Thickness
Specified Outside Diameter D mm (in.)Specified Wall Thickness t mm (in.)
Special Light Sizes aRegular Sizes
≥ 10.3 (0.405) to < 13.7 (0.540)≥ 1.7 (0.068) to ≤ 2.4 (0.094)
≥ 13.7 (0.540) to < 17.1 (0.675)≥ 2.2 (0.088) to ≤ 3.0 (0.118)
≥ 17.1 (0.675) to < 21.3 (0.840)≥ 2.3 (0.091) to ≤ 3.2 (0.125)
≥ 21.3 (0.840) to < 26.7 (1.050)≥ 2.1 (0.083) to ≤ 7.5 (0.294)
≥ 26.7 (1.050) to < 33.4 (1.315)≥ 2.1 (0.083) to ≤ 7.8 (0.308)
≥ 33.4 (1.315) to < 48.3 (1.900)≥ 2.1 (0.083) to ≤ 10.0 (0.394)
≥ 48.3 (1.900) to < 60.3 (2.375)≥ 2.1 (0.083) to ≤ 12.5 (0.492)
≥ 60.3 (2.375) to < 73.0 (2.875)≥ 2.1 (0.083) to ≤ 3.6 (0.141)> 3.6 (0.141) to ≤ 14.2 (0.559)
≥ 73.0 (2.875) to < 88.9 (3.500)≥ 2.1 (0.083) to ≤ 3.6 (0.141)> 3.6 (0.141) to ≤ 20.0 (0.787)
≥ 88.9 (3.500) to < 101.6 (4.000)≥ 2.1 (0.083) to ≤ 4.0 (0.156)> 4.0 (0.156) to ≤ 22.0 (0.866)
≥ 101.6 (4.000) to < 168.3 (6.625)≥ 2.1 (0.083) to ≤ 4.0 (0.156)> 4.0 (0.156) to ≤ 25.0 (0.984)
≥ 168.3 (6.625) to < 219.1 (8.625)≥ 2.1 (0.083) to ≤ 4.0 (0.156)> 4.0 (0.156) to ≤ 40.0 (1.575)
≥ 219.1 (8.625) to < 273.1 (10.750)≥ 3.2 (0.125) to ≤ 4.0 (0.156)> 4.0 (0.156) to ≤ 40.0 (1.575)
≥ 273.1 (10.750) to < 323.9 (12.750)≥ 3.6 (0.141) to ≤ 5.2 (0.203)> 5.2 (0.203) to ≤ 45.0 (1.771)
≥ 323.9 (12.750) to < 355.6 (14.000)≥ 4.0 (0.156) to ≤ 5.6 (0.219)> 5.6 (0.219) to ≤ 45.0 (1.771)
≥ 355.6 (14.000) to < 457 (18.000)≥ 4.5 (0.177) to ≤ 7.1 (0.281)> 7.1 (0.281) to ≤ 45.0 (1.771)
≥ 457 (18.000) to < 559 (22.000)≥ 4.8 (0.188) to ≤ 7.1 (0.281)> 7.1 (0.281) to ≤ 45.0 (1.771)
≥ 559 (22.000) to < 711 (28.000)≥ 5.6 (0.219) to ≤ 7.1 (0.281)> 7.1 (0.281) to ≤ 45.0 (1.771)
≥ 711 (28.000) to < 864 (34.000)≥ 5.6 (0.219) to ≤ 7.1 (0.281)> 7.1 (0.281) to ≤ 52.0 (2.050)
≥ 864 (34.000) to < 965 (38.000)≥ 5.6 (0.219) to ≤ 52.0 (2.050)
≥ 965 (38.000) to < 1422 (56.000)≥ 6.4 (0.250) to ≤ 52.0 (2.050)
≥ 1422 (56.000) to < 1829 (72.000)≥ 9.5 (0.375) to ≤ 52.0 (2.050)
≥ 1829 (72.000) to < 2134 (84.000)≥ 10.3 (0.406) to ≤ 52.0 (2.050)
NOTE     Standardized values for specified outside diameter and specified wall thickness of pipe are given in ISO 4200 [7] and ASME B36.10M[8]
a    Pipe having the combination of specified outside diameter and specified wall thickness is defined as special light size pipe; other combinations given in this table are defined as regular size pipe.

Typical Production Standards of Line Pipe

At UNIACERO, we pride ourselves on adhering to the highest production standards in the industry. Our line pipes are manufactured in strict compliance with the American Petroleum Institute (API) specifications, ensuring they meet all the necessary criteria in terms of steel chemistry, strength, toughness, and dimensional characteristics. Our production standards encompass various aspects, including wall thicknesses, to ensure the optimal performance of our line pipes.

While we will provide a comprehensive list of all the production standards applied to our product, it’s essential to understand that these standards are not just mere guidelines but a testament to our commitment to quality, safety, and excellence. Our seamless pipes, in particular, adhere to minimum yield strength requirements specified by API standards, ensuring durability and reliability in various applications. When you choose our line pipes, you’re choosing a product that stands up to rigorous testing and stringent standards, guaranteeing optimal performance and safety.

How to Select the Right Line Pipe

Selecting the right line pipe is paramount to the success and safety of your project. Begin by considering the volume and type of material you intend to transport, as this will influence the diameter and thickness required. Factor in the pressures the pipe must withstand, and always ensure the chosen product meets the necessary safety regulations and standards. Remember, the mainline, which is the principal pipeline for delivering natural gas, typically requires a larger diameter, while smaller pipelines might need a narrower diameter. At UNIACERO, we’re here to guide you every step of the way. Trust in our expertise and vast product range to provide you with a line pipe that not only meets but exceeds your expectations, ensuring seamless operations and unparalleled safety.

Our Advantages

  1. Over 25 years of experience in pipeline production and installation.
  2. Comprehensive inspection equipment.
  3. Independent product serial numbers for traceability.
  4. Advanced production equipment – Seamer high-frequency welding machine from the United States.
  5. Complete qualifications – API 5L/API 5CT/FM/UL fire pipe certification, etc.
  6. Wide range of products – independently developed solar torque tubes, highly favored in the European market.
  7. Customers spread across the globe.
  8. Excellent after-sales service and sense of responsibility.

Application Scenarios

Our steel pipes are engineered to withstand high temperatures, corrosive environments, and varying pressures, ensuring reliability and safety in the complex petrochemical processes. 

Whether it’s transferring crude oil, natural gas, or chemical intermediates, the robustness and versatility of steel pipes make them indispensable components of the plant’s infrastructure, contributing to efficient production and maintenance of stringent safety standards.

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