Technology-Kunshan Decent Metal Products Co., Ltd.

Our R&D Powerhouse

Kunshan Decent Metal Products Co., Ltd. has built a strong R&D system: with a core team of over 20 full-time R&D engineers covering multiple professional fields, and relying on advanced facilities such as German-imported direct-reading spectrometers and high-precision welding test platforms, it has achieved remarkable results in the field of high-performance welded tubes. It not only breaks through technical barriers to develop special alloy tubes suitable for high-end scenarios such as nuclear power and aerospace, but also optimizes high-precision automatic ion welding processes. Adhering to the concept of "market-oriented and innovation-driven", it continuously consolidates its leading technical position in the industry through in-depth connection with customer needs and industry-university-research cooperation, providing global customers with highly adaptable products and solutions.

Our Production Process

From raw material selection to final inspection, every production step is carefully managed to ensure consistent quality, precision, and reliable performance.

Raw material receiving and inspection

Incoming stainless steel/titanium/nickel-based alloy base materials undergo material analysis using a German direct-reading spectrometer to verify material grade and mechanical properties. Substandard raw materials are prohibited from production.
Pipe precision cutting

CNC cutting to length according to customer order specifications, precisely controlling length tolerances, and removing burrs.
Fully automated argon arc welding forming

20 automated argon arc welding production lines (including 3 high-precision ion welding lines), continuous pipe rolling welding, and online monitoring of weld formation.
Bright annealing treatment (BA tube-specific process)

Closed-loop hydrogen-protected bright annealing ensures no oxide scale and guarantees a mirror-like finish on both the inner and outer walls of the pipes.
Sizing and finishing

Cold rolling finishing controls the tolerances of outer diameter and wall thickness to ensure precision dimensional accuracy.
Full-item non-destructive testing

Eddy current ET + ultrasonic UT dual flaw detection to detect hidden cracks and incomplete weld defects.
Hydraulic burst test

Each component underwent a water pressure test to verify its pressure resistance performance and ensure it met the operating pressure standards.
Cleaning, packing and shipping

Degreasing and cleaning → Labeling and specifications → Moisture-proof packaging, then pack and ship according to the order.

Quality Control

Raw Material Control
Select qualified suppliers strictly, test raw material composition with German direct-reading spectrometers, and reject unqualified materials after appearance and size inspection to control risks from the source.
In-Process Control
Arrange full-time inspectors in key links, monitor welding and forming parameters in real time, test tube specifications online, and keep traceable records for each batch inspection.
Finished Product Control
Conduct full-item testing before delivery, including pressure resistance, flaw detection, microstructure and hardness tests, and deliver only after all items pass.
System Control
With ISO9001 as the framework, cover full-process management, conduct regular internal audits for optimization, strengthen employees' quality awareness, and establish a problem improvement mechanism.

Our Quality Commitment

Kunshan Decent Metal Products Co., Ltd. takes "quality as the lifeline of the enterprise" as its core and deeply practices the original aspiration of "establishing morality first for the enterprise". It has built a standardized system through dual certifications of ISO9001 Quality Management System and ISO14001 Environmental Management System, as well as pressure pipeline production qualification. Relying on a complete set of professional equipment such as German-imported direct-reading spectrometers and eddy current flaw detectors, it realizes multi-dimensional testing, controls the whole chain from raw material entry to finished product delivery, ensures each tube meets international standards such as GB/T12770 and ASTM2554, and satisfies the needs of key fields like petrochemicals and nuclear power.

Electronic universal testing machine
Hardness test
Wing shape parameter test
Laboratory

We have always adhered to the business philosophy of establishing a company by first establishing its moral character and treating people with courtesy.