Huahai Sealing was founded in 1992, formerly known as Wenzhou Ouhai Donghai Asbestos Gasket Factory. The company was officially established in 2001 and has grown into a national high-tech enterprise integrating design, forging, heat treatment, machining, and testing after decades of development. The company is equipped with CNC lathes, vertical machining centers and other processing equipment, as well as desktop spectrometers, desktop hardness testers, metallographic microscopes, roughness meters, coating thickness gauges and other testing instruments. The company has passed the relevant quality management system and industry certification.
Ultrasonic flaw detection technology is based on the principle of sound waves reflecting at different media interfaces. It emits high-frequency sound waves into the material through a probe, receives and analyzes the reflected signals to determine the location and size of defects. The sealing performance of metal ring gaskets is highly dependent on the dimensional accuracy of the cross-section and the internal quality of the material. Huahai seals implement piece by piece testing during the processing to ensure that the accuracy of each product meets the requirements. The enterprise has established a full chain quality control system from raw material cutting, forging, heat treatment, machining to finished product testing. Each link is completed by independent equipment to ensure process consistency and product traceability.
In terms of quality inspection technology research and development, Huahai Sealing has recently obtained a patent for “a detection device for the production of oil and gas pipeline seals”. Through the collaborative cooperation of multiple detection methods, it achieves comprehensive and accurate detection of seal defects. In addition, the company has also obtained a patent for “Metal Seal Micro Leakage Detection System and Method Based on Infrared Image Recognition”, which improves the quality control level of seals through infrared image recognition technology.
In the finished product testing process, Huahai sealing products have a wide temperature range coverage, pressure levels can adapt to various working conditions, and leakage rates can be controlled at a low level, in compliance with relevant international standards. Relying on systematic detection capabilities, its metal ring gasket products have been widely used in fields such as petrochemicals, power energy, and marine engineering, with customers covering well-known domestic and foreign enterprises. From material composition analysis of spectrometers to mechanical performance testing of hardness testers, from microstructure evaluation of metallographic microscopes to standardized quality traceability control throughout the entire process, Wenzhou Huahai Sealing is providing reliable metal seal product guarantees for high-end fields such as petrochemicals and deep-sea drilling with a relatively complete testing system.