What are the production steps for casing and tubing pup joints?

Upsetting Process

In the upsetting process, we increase the cross-sectional area of plain-end blanks by applying pressure at both ends. Our innovation lies in the automation of the handling table, which not only enhances safety during the upsetting process at varying lengths but also ensures consistent and precise results for every pup joint produced. This automated system is a game-changer in achieving uniformity across our products.

Hydrostatic Testing

All of our pup joints undergo rigorous hydrostatic testing. This non-destructive test employs water pressure and a pressure recorder to identify potential leaks. Our state-of-the-art hydrotester is highly adaptable, allowing us to adjust for various lengths and pressures as per API standards and specific customer requirements. This ensures that every joint meets the highest quality benchmarks before proceeding to the next stage.

Full-Body Ultrasonic Inspection

We take pride in having developed a custom, fully automated Full-Body Ultrasonic Inspection (UT) system specifically for our tubing pup joints. Being pioneers in this field, we employ this technology to guarantee defect-free external and internal surfaces, addressing both longitudinal and transverse issues. Unlike other non-destructive tests, our Full-Body UT offers superior accuracy due to its high penetrating power, enabling the detection of even deeply embedded defects. Additionally, its heightened sensitivity ensures the identification of minute flaws that might otherwise go unnoticed. This meticulous inspection guarantees that our customers receive top-tier quality pup joints.

Profiling from Heavy-Wall Mechanical Tubing

We also produce pup joints through profiling techniques applied to heavy-wall mechanical tubing. These processes are executed with exceptional precision and adherence to tight tolerances using advanced CNC machinery. This approach allows us to achieve optimal dimensional accuracy and an impeccable surface finish, meeting the most stringent industry standards.

Special End Area Inspection

To further enhance quality assurance, we utilize wet magnetic particle testing—a non-destructive technique designed to detect surface and near-surface defects. This method is employed to inspect pup joints for both longitudinal and transverse flaws, ensuring that each component is free from imperfections that could compromise performance or safety.

Heat Treatment

We have meticulously engineered a specialized heat treatment line capable of processing individual pup joints with great flexibility. This setup is highly versatile, accommodating diverse lengths and configurations while adapting swiftly to meet customer demands. After heat treatment, all pup joints are carefully re-straightened to maintain their structural integrity and ensure the utmost quality. This attention to detail underscores our commitment to excellence and customer satisfaction.

At every step of production, we prioritize precision, reliability, and customer expectations. Our dedication to quality control ensures that every pup joint delivered surpasses industry standards, providing peace of mind to operators and engineers worldwide.

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ANYANG TIEFA METALLURGY CO.,LTD , https://www.ferroalloytiefa.com