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.
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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.)
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authentic013@steelpipes-fitting.com
+86 13668807131
Donghe Industrial Zone, Mengcun County, Cangzhou City, Hebei Province
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