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As a leading manufacturer of structural components in China, Kotai Heavy Industries has established a comprehensive production system integrating blanking & forming, welding, precision machining, and finished product coating. Focused on the manufacturing of core products, we specialize in producing key structural components for construction machinery and related equipment.Through stringent quality control and sophisticated craftsmanship, we efficiently meet the in-house supporting needs of our own construction machinery products while actively expanding into external markets. We have become a trusted partner of internationally renowned OEMs including Takeuchi, Kato (Japan), Clark, Hyundai (South Korea), and have earned high recognition from global customers with our exceptional quality.
We have built a highly competitive production system with a core annual capacity of over 100,000 tons of high-end structural components. This robust capability not only demonstrates our ability to quickly respond to market demand but also enables us to handle large-scale, mass orders with ease, providing stable and reliable supply chain support for global partners.
We consistently regard technological innovation and process upgrading as our core driving force. By continuously investing in R&D to optimize production flows, introducing high-precision processing equipment and intelligent production management systems, we exercise strict control over every step from raw material selection to final product delivery. This ensures we deliver more reliable, efficient, and cost-effective structural components to our customers.
Furthermore, we are deepening strategic cooperation with world-leading enterprises, achieving close synergy in technological R&D, process innovation, and market expansion. Steadily advancing toward the forefront of the industry, we work hand in hand with our partners to promote high-quality progress and development in the global equipment manufacturing sector.
Equipped with high-precision facilities including CNC flame cutting machines, CNC plasma cutting machines and laser cutting machines, we realize automated precision cutting of steel plates and fixed-size processing of profiles. Smooth cutting edges and high dimensional accuracy lay a solid foundation for subsequent forming and welding procedures.
Equipped with automatic welding robots, submerged arc welding machines, gas metal arc welding equipment and other professional facilities, we adopt standardized welding procedures and professional non-destructive testing to ensure well-formed welds with stable structural strength that fully meet the high load-bearing and anti-vibration requirements of construction machinery structural components.
Using high-precision equipment including CNC machining centers, CNC boring and milling machines and drilling machines, we conduct finish machining on key mating surfaces and mounting holes of structural components, guaranteeing precise dimensional and geometric tolerances and improving assembly accuracy and part interchangeability.
Workpiece surfaces are strengthened by automatic shot blasting equipment to remove scale, rust and surface contaminants, which helps optimize surface roughness, enhance coating adhesion, and improve the fatigue resistance and service life of structural components.
We implement a standardized painting process consisting of primer, intermediate coat and topcoat, using specialized anti-corrosion and anti-rust coatings. The coating is uniform with strong adhesion and excellent weather resistance, ideal for complex outdoor working conditions and long-term service environments.
A full-process quality control system is established, covering dimensional inspection, weld nondestructive testing, hardness testing, coating thickness measurement and load simulation verification across multi-dimensional checks, ensuring every product complies with design standards and customer requirements.
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