E-mail: authentic013@steelpipes-fitting.com
WhatsApp: +86 13668807131
E-mail: authentic013@steelpipes-fitting.com
WhatsApp: +86 13668807131
Jan. 28, 2026
Improper use of seamless pipe elbows can lead to corrosion. Once corrosion occurs, the wall of the seamless pipe elbow typically thins, and localized pitting and corrosion appear. Methods for detecting corrosion in seamless pipe elbows include: Leakage magnetic flux detection is based on the high permeability of ferromagnetic materials.
The permeability at corrosion defects in seamless steel pipe elbows is much lower than the elbow's overall permeability. The seamless steel pipe elbow is magnetized under the influence of an external magnetic field. When the seamless steel pipe elbow is defect-free, most magnetic lines of force pass through the steel pipe and are evenly distributed; when defects exist inside the seamless steel pipe elbow, the magnetic lines of force bend, and some leak from the surface of the steel pipe. Detecting the magnetic flux leaking from the surface of the magnetized seamless steel pipe elbow can determine the presence of defects. Ultrasonic testing utilizes the principle of ultrasonic pulse reflection to measure the thickness of the corroded pipe wall. This process uses a self-propagating centrifugal casting method, mainly utilizing the chemical reaction of the material itself, generating high temperatures through exothermic combustion, and synthesizing new substances during the propagation of the combustion wave.
During the testing process, the probe emits ultrasonic pulses perpendicularly towards the inner wall of the seamless pipe elbow. The probe first receives reflected pulses from the inner surface of the pipe wall, and then receives reflected pulses from the outer surface. The distance between this pulse and the reflected pulse from the inner surface reflects the thickness of the pipe wall. Bending: refers to processing pipes into seamless elbows, generally referring to metal pipes and PVC electrical conduits used in the plumbing industry; bent seamless pipe fittings elbows: refer to seamless metal pipe fittings elbows in the water supply and drainage field. Small-diameter seamless pipe fittings elbows can be obtained through bending.
If you have any further questions, please feel free to contact us at authentic013@steelpipes-fitting.com.
Latest News
Company News
Nov. 03, 2026
From November 2 to November 5, 2026, ADIPEC 2026—a highly anticipated global energy industry exhibition—was held in the United Arab Emirates. Cangzhou Authentic Fitting Manufacturing Co., Ltd. participated in this major international event, joining professionals from the global oil, gas, energy, and industrial piping sectors to explore industry trends and identify new opportunities for collaboration.
Industry News
Nov. 02, 2026
Low-carbon steel seamless pipe
Low-carbon steel seamless pipes are seamless tubes manufactured from carbon steel with a carbon content of ≤0.25% through processes such as piercing and rolling. Characterized by moderate strength, excellent plasticity and toughness, and ease of processing, they are among the most widely used basic tubular products in industrial applications. Due to their superior workability, they are commonly referred to in the industry simply as "low-carbon steel."
Industry News
Oct. 30, 2026
How to select carbon steel elbows with the appropriate wall thickness for industrial piping systems?
In industrial piping systems, carbon steel elbows are critical connecting components primarily used to change the direction of fluid flow. They are widely employed across sectors such as oil and gas, chemical processing, power generation, shipbuilding, and water treatment.
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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