E-mail: authentic013@steelpipes-fitting.com
WhatsApp: +86 13668807131
E-mail: authentic013@steelpipes-fitting.com
WhatsApp: +86 13668807131
Oct. 08, 2024
With the rapid development of the economy and the continuous improvement of energy demand
pipelines for oil and gas resources have seen significant advancements in recent years.
Several medium-caliber Electric Resistance Welded(ERW)line pipe units have been completed and are now operational.
ERW line pipes are widely utilized in oil and gas field gathering pipelines and spur lines.
This article will focus on the impact of circumferential residual stress on the manufacturing process of ERW line pipes
as well as its implications for product quality and control.
ERW Pipe Manufacturing Process
The ERW pipe forming process can be divided into two phases:
the first stage involves deformation, while the second stage focuses on reducing distortion.
Both phases, the inner layer of the steel pipe experiences circumferential compressive stress and deformation,
while the outer layer undergoes tensile stress and extension deformation during fine shaping and sizing processes.
There are differences in final strain between the inner and outer layers of ERW pipes, indicating an inconsistency
in circumferential strain.
Common Issues in ERW Line Pipe Manufacturing
Uneven Deformation: The manufacturing process often leads to uneven bending deformation, resulting in significant
residual stress.
It is essential to implement measures to mitigate the negative impacts of residual stress on the manufacturing process.
Residual Stress Analysis: The study and control of residual stress should extend beyond just detecting and analyzing
the final product.
It is crucial to analyze the forming process of ERW pipelines from a process control perspective to reduce residual
stress and its adverse effects on product quality.
Sizing Importance: Sizing ensures that the pipe diameter meets specifications, while hydrostatic testing confirms
the density of the steel pipe.
For ERW pipelines, these processes are also vital for reducing circumferential residual stress.
Conclusion
Understanding the manufacturing process of ERW pipes
particularly regarding circumferential residual stress, is critical for ensuring high-quality products.
By addressing common issues during production and focusing on effective control measures,
manufacturers can enhance the performance and reliability of ERW line pipes in various applications.
Latest News
Industry News
Jun. 22, 2026
Introduction to Alloy Steel SO Neck Slip-on Flange: As the name suggests, the Alloy Steel SO Neck Slip-on Flange is a slip-on flange or flange plate made of alloy steel. It belongs to the category of neck slip-on flanges. Alloy Steel SO Neck Slip-on Flanges are aesthetically pleasing, have a smooth and flat surface, are resistant to acids and alkalis, corrosion-resistant, and have strong performance characteristics. The English designation for neck slip-on flanges is SO.
Industry News
Jun. 18, 2026
Carbon steel elbow fabrication
Cangzhou Aosendike Pipe Fittings Manufacturing Co., Ltd. will guide you through information on carbon steel elbow manufacturing. Elbows are a common pipe fitting in piping systems, and a large number of fittings are used at bends. The main function of elbows is to control and maintain pipelines. Control of components such as steering wheels, engines, and gearboxes is primarily achieved through the steering wheel. Because elbows are mostly made of steel, their surfaces are smooth and bright, giving them good wear resistance. Elbows used in piping systems are for turning and are irreversible fittings. They constitute a large proportion of piping systems. Elbow
Industry News
Jun. 16, 2026
Why do different projects have different requirements for elbow wall thickness?
In industrial piping systems, elbows are crucial fittings for fluid diversion. Many buyers frequently encounter varying wall thickness requirements when requesting quotes, such as SCH20, SCH40, SCH80, and even SCH160. Many ask: why do different projects have such different wall thickness requirements for carbon steel elbows?
Authentic is here to help you find the right pipe fittings and flanges for your specific needs.
FAQ
What certifications do your products have?
Our products comply with international standards such as ASTM, ANSI, JIS, DIN, and GB. We also hold various certifications to assure quality and reliability, including ISO 9001.
How can I get some samples?
If you need, we will offer you samples for free, but new customers are expected to pay express charge.
To which country have you supplied your products?
We have supplied to Thailand, China Taiwan, Vietnam, India, South Africa, Sudan, Peru, USA, Brazil, Trinidad and Tobago, Kuwait, Qatar, Sri Lanka, Pakistan, Romania, France, Spain, Germany, Belgium, Ukraine etc. (Figures here only include our customers in latest 5 years.)
Get Quote
Have questions or need a custom solution? Reach out to us!
Our team at Authentic is here to help you find the right pipe fittings and flanges for your specific needs.
You Can Contact Us in the Following Ways
authentic013@steelpipes-fitting.com
+86 13668807131
Donghe Industrial Zone, Mengcun County, Cangzhou City, Hebei Province
Get Quote
At Authentic, we understand that every project has unique requirements. Our dedicated team is here to provide you with a customized quote tailored to your specific needs. By filling out the form below, you’ll receive competitive pricing, high-quality product details, and estimated delivery times.
中文
Русский
Español
عربي
