Overseas orders for large-module heavy-duty gear shafts continue to rise; what enables Tangshan Yuexin Machinery to secure repeat orders from heavy industry clients across multiple countries?

For over a decade, Tangshan Yuexin Machinery has specialized in the export of heavy-duty forgings and large-module gear shafts. Leveraging the CNC floor-type boring and milling center shown in the image, the company performs precision machining on gear shafts and flanges with diameters ranging from 800 mm to 2,200 mm. Its products are sold to 12 industrial nations across Southeast Asia and Central Asia, and the company offers custom manufacturing services for mechanical components, non-standard parts, and welded fabrications based on customer drawings.

Professional processing of measured data

This equipment processes gears with modules ranging from M8 to M32, achieving DIN Class 6 tooth profile accuracy, a shaft diameter tolerance of ±0.015 mm, and a finished surface roughness of Ra ≤ 0.8 μm. The 42CrMo forgings undergo quenching and tempering followed by high-frequency induction hardening of the tooth surfaces, resulting in a hardened layer depth of 3.2–3.8 mm; processing efficiency per unit is 18% higher than the industry average. The entire production process is ISO9001 certified, and every export batch is accompanied by non-destructive testing (NDT) and CMM dimensional inspection reports, meeting the quality standards for heavy industrial imports in overseas markets.

Real-world Case Study of Mineral Exports from Vietnam

A Vietnamese open-pit mining company procured 16 sets of heavy-duty gear shafts designed for high-temperature, heavy-load operations averaging 20 hours per day. The finished products feature a consistent gear tooth surface hardness of HRC 48–52, with the entire process—spanning forging, heat treatment, precision machining, and export packaging—completed within 28 days. On-site performance data showed that after 12 months of continuous operation, gear tooth wear was a mere 0.008 mm and the overall equipment failure rate dropped by 62%; consequently, the client has placed a follow-up order for an additional 24 sets. Mr. Tran, the company’s Purchasing Director, stated that the product's service life far exceeds that of parts supplied by local manufacturers, and that Tangshan Yuexin Machinery’s transmission components will be the top choice for all future mine expansion projects.

Foreign Trade Qualifications and Delivery Assurance

The company holds independent import-export customs clearance qualifications; over the past three years, it has successfully executed 37 overseas heavy-industry support projects and achieved a 76% repeat-order rate among mining clients in Southeast Asia. We accommodate diverse client specifications, offering custom manufacturing for mechanical components, non-standard parts, and welded fabrications based on provided drawings. Exported products undergo a three-layer anti-corrosion treatment and are shipped in fumigated solid-wood crates; standard service includes a 12-month bilingual (Chinese-English) warranty and 48-hour remote technical support. Production processes are fully traceable via real-time photo documentation, pricing is transparent with no hidden fees, and the company maintains a zero-complaint record from overseas clients over many years. 

 Leveraging a comprehensive local steel supply chain and extensive CNC machining capacity, the company is continuously expanding its production lines for extra-large gear shafts. By utilizing empirical data from actual operating conditions and proven overseas project experience, we consistently deliver high-precision forged transmission components, establishing a reliable Chinese brand for heavy-industry parts in the global market.