Tangshan Yuexin Machinery: Delivering High-Quality Custom-Machined Components for Global Industrial Projects

At Tangshan Yuexin Machinery Co., Ltd., we fully understand that for heavy machinery and industrial equipment, every single component is critical. Leveraging years of experience in manufacturing custom mechanical parts, we have earned the widespread trust of domestic and international clients through our reliable production capabilities, rigorous quality control, and dependable delivery services.

Factory Capabilities:

We operate a comprehensive, full-process parts machining workshop capable of handling custom mechanical components across a wide range of specifications and models—from standard parts to the large, high-precision gears, couplings, and other heavy-duty components illustrated here. Our facility is equipped to process various materials, including carbon steel, alloy steel, and cast iron. Our products are widely applicable across sectors such as metallurgy, mining, construction machinery, and general industrial equipment.

Backed by our sophisticated machining infrastructure, we once customized a large-scale gear specifically for a rolling mill at a major domestic metallurgical enterprise. This gear was required to withstand operating conditions characterized by high temperatures, heavy loads, and severe impact forces. Addressing the client's core requirements—specifically a tooth surface hardness of HRC 60–64 and a torque capacity reaching tens of thousands of N·m—we selected 20CrNiMo high-strength alloy steel. We enhanced its performance through a carburizing and quenching heat treatment process and optimized the tooth root fillet design to boost its resistance to impact fatigue. Upon delivery, the final product was successfully installed and commissioned, integrating seamlessly into the client's production line; it subsequently operated for over 8,000 hours annually without failure, earning high acclaim from the client.

Additionally, we customized a tire coupling with a specialized bore diameter for an open-pit coal mine in North China. This solution resolved a critical issue for the client: a mismatch between the coupling and the drive shaft within the slewing mechanism of their aging electric shovel. By utilizing 3D laser scanning to precisely map the dimensions of the original shaft, we optimized the fit tolerances and keyway design. Furthermore, we employed 42CrMo alloy steel to enhance the strength of the coupling flanges. The delivered product offered easy installation, provided significant shock-absorbing effects, and effectively reduced operational vibrations within the equipment.

In the course of serving our international clientele, we have observed that many clients require not merely finished components, but rather comprehensive, custom-tailored machining solutions designed to meet the specific demands of their unique operating environments. To address this need, we have established a flexible machining system that integrates turning, milling, gear hobbing, and heat treatment processes. This integrated approach ensures that even the most complex, non-standard components can be manufactured to precisely match our clients' exact design specifications. Production Process:

We have established a standardized parts processing workflow for every product, proactively eliminating errors at the source to ensure:

Consistent Quality:

Technical Consultation & Quotation:Our technical team engages in in-depth consultations regarding client drawings or technical specifications, simultaneously offering material recommendations and detailed production schedule proposals.

Raw Material Control:We source raw materials exclusively from qualified suppliers, providing material certificates and mechanical property reports to ensure full traceability throughout the entire process.

Machining & Forming: Utilizing specialized equipment—such as CNC lathes and gear hobbing machines—we execute processes like gear profiling and coupling precision finishing, guaranteeing that critical dimensional tolerances meet specifications.

Heat Treatment & Surface Treatment:Based on the product's operational environment and requirements, we perform heat treatments (e.g., tempering, quenching) or apply surface protective coatings to enhance the parts' wear resistance and service life.

Export-Grade Packaging: Once parts have undergone deburring and cleaning, they are packed in specialized wooden crates designed for export. We implement robust anti-collision and anti-rust measures to ensure safe transit during long-distance shipping.

We recommend that clients provide complete drawings or 3D models as early as possible; this facilitates rapid alignment of production standards and effectively shortens lead times.

Quality Inspection:

Component failures in industrial equipment often result in costly downtime losses. Therefore, our quality

control measures are integrated throughout the entire parts processing workflow:

1. Incoming Material Inspection: Before entering our facility, all raw materials undergo testing for chemical composition and mechanical properties to ensure full compliance with industry standards.

2. In-Process Inspection:At critical stages of the manufacturing process, our quality inspection team conducts spot checks on key parameters—such as dimensional accuracy, surface finish, and gear profile precision—to promptly identify and correct any deviations.

3. Final Inspection & Reporting: Upon product completion, we perform a comprehensive dimensional verification. Upon request, we can also provide Non-Destructive Testing (NDT) services and issue a complete quality inspection report for export orders.

Years of industry experience have taught us that consistent quality is the bedrock of long-term partnerships. Consequently, we maintain a complete inspection archive for every production batch, ensuring that our quality remains fully traceable and verifiable. For a high-torque diaphragm coupling previously customized for a mining client, we employed non-destructive testing techniques during the final inspection phase to precisely identify and eliminate potential internal cracks. Concurrently, we issued a detailed dynamic balance test report, ensuring that the product’s vibration level met or exceeded the G6.3 standard during high-speed operation—thereby effectively preventing costly downtime losses for the client's equipment.

Export Experience:

We possess extensive experience in fulfilling export orders and are well-versed in the entire workflow—from technical coordination and production control to customs clearance and logistics. Our team is proficient in handling all types of export documentation and can facilitate deliveries under various trade terms (such as FOB and CIF), ensuring that goods are delivered safely and on time.

To date, we have supplied custom-machined components for industrial projects in numerous countries and regions—including Russia—demonstrating our ability to rapidly respond to the specific localization standards and unique requirements of our overseas clients.

For instance, we once customized gears and couplings for a DC furnace for a Russian smelting enterprise. We conducted thorough research into the local extreme climate conditions and GOST standards, optimizing the component designs for low-temperature resistance. We utilized export-grade packaging—featuring moisture-proof plastic sealing combined with shock-absorbing steel frames—specifically tailored for maritime transport. Throughout the process, we provided real-time updates on production progress, sharing video feedback on critical milestones such as heat treatment and machining. Ultimately, the goods cleared customs smoothly, were successfully installed and commissioned, and integrated seamlessly into the client's smelting production line—thereby deepening cooperation in the field of industrial equipment between China and Russia.

For all overseas orders, we provide continuous, real-time updates on production progress. By sharing photos and videos of key manufacturing milestones, we ensure that our clients remain fully informed of their order status at every stage.

At Tangshan Yuexin Machinery, we are more than just a professional parts machining facility; we are your trusted partner for customized industrial solutions. Whether you require a single replacement gear or a batch of industrial components, we are fully equipped to support you throughout the entire process—from initial design coordination and precision machining to final delivery.