In the modern factory building of Yongxing Industrial Zone in Longwan, Wenzhou, the production workshop of Wenzhou Huahai Seal Technology Co., Ltd. is operating efficiently. The CNC lathe cluster is orderly connected to the vertical machining center, and the robotic arm accurately completes the precision machining and inspection process of the metal ring gasket. This new factory integrates the factory areas that were originally scattered across multiple streets into one, and is becoming the core carrier of the enterprise’s high-end seal production project.
In the field of metal seal manufacturing, the level of intensive production capacity and the precision of production processes directly determine the performance and delivery capability of products. Huahai Sealing has been dedicated to the field of metal seals for many years since its establishment. In recent years, enterprises have relied on the opportunity of new factory production to systematically promote the integration of production capacity and intelligent manufacturing upgrading of high-end seal production projects.
In terms of production base construction, the new factory building of Huahai Sealing has been officially put into operation. This new factory integrates all the previously scattered production workshops into the Longwan production base, forming a full chain independent production capacity for design, forging, heat treatment, machining, and testing. This integration not only optimizes management processes and reduces logistics costs, but also enhances the company’s ability to respond quickly to sudden market demands. According to the company’s technical data, the integrated production base has multiple automated production lines, high precision CNC equipment, and a good product qualification rate. Enterprises can produce octagonal gaskets, elliptical gaskets, and various series of metal ring gaskets, with processing diameters that can meet the demand for large-diameter seals in large-scale engineering projects such as petrochemicals, deep-sea drilling, and nuclear power equipment. In terms of supply chain construction, enterprises deepen strategic cooperation with domestic high-end alloy material manufacturers, achieve domestic supply of core materials, establish a full industry chain system of research and development, production, testing, and service, and launch rapid response customized services.
In terms of production equipment, Huahai Sealing has built a full chain equipment network covering precision machining and quality inspection. Enterprises are equipped with multiple models of CNC lathes, which can achieve automated processing of metal ring pads from raw materials to finished products; Introducing CNC vertical lathes to meet the processing needs of large sealing components; Deploy vertical machining centers to achieve precision molding of complex curved seals through multi axis linkage technology. In terms of the application of intelligent detection systems, enterprises are equipped with various detection instruments such as spectrometers and hardness testers, and establish a full process quality control system from raw material composition analysis to finished product performance testing. Applying machine vision technology to identify sealing surface defects significantly improves detection efficiency compared to manual methods, and controls the outflow rate of defective products at a low level. The company’s recent acquisition of the patent for “Metal Seal Micro Leakage Detection System and Method Based on Infrared Image Recognition” has further improved the quality inspection level of its products. Technological innovation has become the core driving force for improving production efficiency. The company has established an enterprise technology research and development center and established joint laboratories with multiple universities. By developing multi station progressive die technology, the production cycle can be effectively shortened, material utilization can be improved, and production costs can be effectively controlled. In terms of material modification, the corrosion resistance of stainless steel is improved through microalloying treatment, and related technologies have been granted invention patents.
In terms of product materials, Huahai Seal has multiple alloy formulas and can provide materials with excellent corrosion resistance such as stainless steel and special alloys. The product has a wide temperature range and can meet various working conditions with pressure levels. The leakage rate can be controlled at a low level, which complies with relevant international standards. In the field of ocean engineering, in response to the dual corrosion of high concentration hydrogen sulfide and seawater chloride ions faced by deep-sea drilling equipment, the metal ring gasket developed by the company has been successfully applied to China’s ocean drilling platform equipment by optimizing the cold processing technology and material ratio, and controlling the corrosion amount within the conventional allowable value. In the field of hydrogen energy storage and transportation, enterprises have launched special material products with a wide temperature resistance range, specifically to overcome the sealing problem of extreme working conditions in hydrogen energy storage and transportation.
Quality control is an important component of the Huahai Sealing Production Project. The company has passed multiple quality management system certifications and related industry certifications. As a member of the National Technical Committee for Standardization of Pipeline Accessories, the company has participated in drafting multiple national and industry standards. In the testing process, the company implements a full process quality tracking system from raw material storage to finished product delivery. When raw materials are stored, material composition testing is conducted on each batch of alloy materials; During the processing, key dimensions are inspected piece by piece; Before the finished product leaves the factory, it undergoes strict pressure testing and leak detection. The product has been exported to multiple countries and regions, with customers including well-known domestic and foreign enterprises.