Craftsmanship Weihua

12,500 kN four-column hydraulic press with a maximum ram stroke of 1,200 mm and a maximum distance from ram to worktable of 2,000 mm. The worktable provides an effective area of approximately 3,200 mm (width) × 1,600 mm (length). Primarily used for bending and forming medium-to-thick steel plates, such as pre-bending steel plates for drum fabrication.

Our company's product manufacturing process incorporates advanced and comprehensive crane fabrication techniques alongside supporting equipment and tooling systems. From steel pre-treatment, cutting, and welding to assembly, heat treatment, and painting, the entire production cycle adheres to stringent process requirements and quality standards. This ensures every stage of production meets technical specifications and delivers high-quality results.

One CNC gantry boring and milling machine XK2740, Two XK2420 units with machining travel ranges of 10000×4000×(300–1900) mm, 6000×2000×1200 mm, and 5000×2000×1200 mm respectively, used for machining monolithic bogie frames, pulley beams, crossbeams, intermediate end beams, and counterweights.

The company possesses multiple dual-gun gantry submerged arc welding machines for external longitudinal seam welding of main girder and end girder box-type structural components. All main girder welding employs dual-wire welding methods. It pioneered the development of automated welding equipment featuring mechanical weld seam tracking for crane arch parabolas, achieving fully automated welding processes for crane curves and variable cross-sections. End beam welding employs a dual-station ship-shaped welding technique, modifying the position and form of horizontal fillet welds to significantly enhance fillet weld quality.

The DVT500×25/32 digital display vertical lathe (double column) can process rotary parts with a diameter of 5300mm and a height of 2250mm. Its machining performance ensures excellent compatibility with Weihua Co., Ltd.'s product components, significantly guaranteeing both machining quality and efficiency.

Stress relief annealing is primarily used to ensure dimensional stability in welded structural components, preventing deformation caused by long-term aging. Our company operates a cart-type natural gas annealing furnace with a net chamber size (L x W x H) of 16000mm x 6000mm x 8000mm, capable of performing post-weld stress relief annealing on welded structural components of all sizes—large, medium, and small.

Weihua Co., Ltd. possesses one TK6926J heavy-duty CNC floor-type milling and boring machine equipped with the Spanish FAGOR 8055 CNC system, two TK6920A units, and one TK6916A unit. These machines are capable of performing integrated machining for crane trolleys, end beams, and cross beams of various tonnages, as well as other large structural components such as counterweights, slewing beams, cross beams, and super-large gantries for large gantry cranes.