Tube End Upsetting and Thickening Machine

As global oil and gas extraction continues to advance into deeper wells, high-pressure environments, and corrosive conditions, the connection points of open-ended tubing (OCTG) have become the most critical and weakest link in the entire tubing string chain. Tube end thickening technology—which enhances joint strength through localized material accumulation—has evolved from an optional process into a rigid standard for high-end oil and gas extraction.

Dayi Heavy forging technology, leveraging decades of experience in metal forming equipment, provides you with high-precision, high-repeatability, and high-efficiency OCTG upsetting machines, helping your tubing processing capabilities reach the top tier globally.

I. What is an OCTG pipe end thickening machine?

The OCTG (Oil Country Tubular Goods) Pipe End Thickening Machine is a specialized hydraulic/mechanical device designed for processing the ends of OCTG pipes used in the oil and gas industry. This machine is a specialized hydraulic forging equipment that uses localized heating and axial upsetting to create a thickened section of a specified shape and size at the end of the pipe. After subsequent threading, the thread strength of this thickened area can be equal to or even higher than that of the pipe body, thus completely solving the industry pain point of premature failure at the joint.

According to the API 5CT standard, pipe end thickening is divided into three types: external thickening (EU), internal thickening (IU), and internal and external thickening (IEU). This machine from Dayi can seamlessly switch between process modes to meet the mass production needs of N80, L80, P110, and even higher steel grade pipes.

Technical parameters:

Product Advantages — Why Choose a Pipe End Thickening Machine?

Equipping your OCTG  pipe end with an advanced thickening machine offers the following key advantages for production and processing:

 1. Improved Connection Strength and Structural Reliability

Thickened pipe ends significantly improve the load-bearing capacity and fatigue resistance of the connection, enabling it to withstand the high pressure, high temperature, and severe vibration environments downhole.

2. Optimized Welding and Threading Quality

Thickened ends provide a more reliable material basis for threading, welding, and clamp installation, making it easier for the finished product to meet standards such as API 5CT.

3. Increased Production Efficiency and Consistency

The thickening machine, with its automated control system and modular design, enables fast, highly repeatable processing cycles, significantly improving processing efficiency.

 4. Reduced Rework and On-Site Failure Rates

The improved quality of the connection significantly reduces the risk of leaks and other failures during downstream oil and gas well installations, improving operational safety.

Why Choose Dayi?

Globally, only a handful of suppliers possess the capability to deliver complete sets of large-tonnage, high-precision pipe end thickening machines. Dayi heavy forging not only provides individual machines but also boasts the capability for end-to-end process design and production line integration, encompassing pipe heating, upsetting, heat treatment, and subsequent finishing.

We deliver not just a piece of equipment, but a proven, replicable, successful process pathway.

Lead the way in pipe manufacturing, starting with the fittings.

If you are planning a new OCTG production line or wish to upgrade the energy efficiency and yield of your existing thickening process, please contact Dayi Hydraulics Technology Center. We will provide you with feasibility analysis based on measured data, sample production support, and return on investment calculations.