API Tube Mill Machine

API pipes, an abbreviation for American Petroleum Institute, are the result of advanced technologies and global standardization. These pipes are designed and manufactured under the supervision and regulations of the American Petroleum Institute (API). They are considered one of the most essential infrastructure components in the oil and gas industry. One of the most widely used types of these products is API steel pipes, which are manufactured according to the API 5L standard for the transmission of oil, gas, and industrial fluids.

API Pipe Mill For Oil Transportation

Enhancing workplace safety through strict compliance with precise and rigorous requirements • Facilitating collaboration with international companies in the oil and gas industry • Supporting environmental protection in line with sustainable development goals • Ensuring raw material conformity with global standards and minimizing production waste • Creating a competitive environment and enabling active presence in global markets

At Lotos Forming, all stages of design, manufacturing, and delivery of industrial equipment are carried out in accordance with these internationally recognized standards—ensuring the highest levels of quality, safety, and compliance with the needs of both domestic and international clients.

What is an API Tube Mill?

Types of API Pipes API pipes are generally categorized into two main types based on their manufacturing process:

1. Welded Pipes: • ERW (Electric Resistance Welded): These pipes are made from rolled steel sheets, with the edges welded together using electric resistance. They are typically produced up to 24 inches in diameter and are suitable for mediumpressure transmission lines.

• LSAW (Longitudinal Submerged Arc Welded): In this method, steel plates are welded longitudinally. These pipes are ideal for large diameters and are used in high-pressure transmission applications.

• SSAW (Spiral Submerged Arc Welded): Steel plates are spirally formed and welded in this process. SSAW pipes are generally produced in large diameters and are used for special applications in transmission lines.

2. Seamless Pipes (Mannesmann): These pipes are manufactured from solid steel billets without any welding seams. Thanks to their uniform structure, they are highly suitable for high-pressure and high-temperature environments

Durable Api Tubing

Types of API Standards Related to Seamless Pipes:

• API 5L – For oil and gas transmission pipelines

• API 5CT – For casing and tubing in oil and gas wells

• API 5DP – For drill pipes

tube mill parts name

1- Uncoiling

2- Leveling

3- Shearing and Butt-Welding

4- Horizontal Accumulator

5- Non-Power Leveling

6- Rough Forming

7- Precision Forming

8- Welding Seam Guide

9- Extrusion

10- High-Frequency Welding

11- Deburr Device

12- Medium Frequency Annealing Device

13- Air Cooling Device

14- Water Cooling

15- Sizing

16- Cold Flying Cutting Saw

Api Milling Equipment

The API pipe production line is recognized as one of the most advanced and efficient systems in the oil and gas industry. This line is capable of producing both welded and seamless pipes that comply with internationally accepted API standards. Given the critical role these pipes play in transporting fluids and gases, their quality and durability are of utmost importance.

The use of cutting-edge technologies in welding, cooling, and quality control processes has enabled this production line to achieve the highest levels of productivity and safety. Key operations such as high-frequency welding, mediumfrequency annealing, and online quality testing are fully automated to ensure pipes with excellent mechanical and chemical properties.

Thanks to its ability to rapidly adjust pipe sizes and support a wide range of API grades, this production line offers high flexibility in meeting various market demands. Considering the strict standards applied in API pipe manufacturing, choosing this production line is a reliable solution for supplying high-quality pipes that withstand high pressure and temperature.

For more information and expert consultation on selecting the best API pipe production line, feel free to contact our team.

1- How is the welding process performed in this line? High frequency (HF) straight seam welding is used in this production line. A seam guide and extrusion unit are positioned before the welding stage, while a deburring unit and a medium-frequency annealing unit follow the welding process to ensure high weld quality and structural integrity.

2- Does this line offer a high level of automation? Yes, from coil butt-welding to the final cold flying saw cutting, all sections of the line are fully automated and precisely controlled.

3- How is the cooling process of the pipes performed? The cooling process consists of two stages: air cooling followed by water cooling. This dual system ensures the preservation of mechanical properties and helps control pipe warping.
4- What is the role of the annealing device in this line? Medium frequency annealing is used to relieve internal stresses generated during welding. It enhances the flexibility and final strength of the pipe, especially for API-grade specifications.

5- What quality control systems are available in this production line? Weld seam guide, extrusion unit, leakage testing system, diameter and thickness measurement, precision cutting system, and optionally, online eddy current testing (ECT) can be included.

6- How are the pipes packaged at the end of the line? Pipes are typically bundled and strapped either manually or using an automatic stacking and strapping system