Founded in 1993, Ningbo Qianhao focuses on precision casting and metal forming processing, primarily serving domestic and international OEM customers in industries such as automotive, rail transit, construction machinery, material handling machinery, and agricultural machinery. The company owns 4 factories, with a total registered capital of 83 million RMB, total fixed assets of approximately 450 million RMB, and a total site area of 180 mu. It employs 645 people and has a total casting capacity of 50,000 tons. The core advantages of Ningbo Qianhao are concentrated in its wide coverage of casting processes, large-scale steel casting capacity, complete machining capabilities, strong finished product delivery capabilities, and a sound quality management system. We provide customers with a one-stop metal parts solution, ranging from casting blanks to machined finished products, sheet metal welding, surface treatment, and assembly.
In terms of steel casting and investment casting, Ningbo Qianhao possesses a variety of process capabilities, including lost wax investment casting, silica sol casting, water glass casting, low-temperature wax silica sol casting (composite fast-drying process), lost foam casting, and shell moulding. Different processes can cover small to medium-sized casting requirements ranging from about 0.1Kg to 600Kg, corresponding to different dimensional accuracy and surface roughness requirements. Lost wax casting is suitable for thin-walled, complex-structured steel castings with high dimensional accuracy requirements. The material range includes carbon steel, alloy steel castings, and stainless steel casting, with a product weight range of 0.05-80kg, dimensional tolerance up to CT5-CT8, and surface roughness up to Ra3.2-Ra12.5um.
Lost foam casting is one of the important process capabilities of Ningbo Qianhao. It is suitable for medium-sized steel castings ranging from 50-600Kg, with a maximum linear dimension of up to 1600mm×1200mm×1200mm and a dimensional tolerance of CT6-CT8. This process belongs to the category of precision casting. Compared with ordinary sand casting, it has characteristics more suitable for medium-to-high-end steel castings in terms of casting structure, dimensional accuracy, and surface quality, while overcoming the application limitations of traditional lost wax casting for heavier castings. For projects that require both larger casting weight and attention to material properties, dimensional stability, and subsequent machining costs, lost foam casting can serve as a process choice beyond sand casting or traditional precision casting. Shell mold casting is suitable for carbon steel and alloy steel castings ranging from 0.5-100kg. It features a shorter production cycle, higher production efficiency, and relatively controllable costs, making it suitable for projects with moderate structural complexity and large batch sizes.
Another outstanding capability of Ningbo Qianhao is the collaborative delivery of casting and machining. The company has two independently operated machining plants, equipped with more than 90 high-end horizontal and vertical machining centers, including some 5-axis equipment and Okuma and Doosan brand machining centers. It also has more than 100 various CNC machines, 3 laser cutting machines, an intelligent paint coating line, an AGV intelligent logistics system, and management systems such as PLM, ERP, and MES. The cumulative investment in major machining equipment is nearly 100 million RMB. Compared to the conventional model where machining is merely a supporting process for the casting workshop, Ningbo Qianhao can independently undertake finished machining of precision casting parts and large-batch machining delivery, reducing the connecting links between casting, outsourced processing, and final assembly. This helps customers solve issues such as scattered suppliers, insufficient dimensional consistency, fluctuating outsourcing quality, and complex delivery coordination.
In terms of product and service scope, Ningbo Qianhao not only supplies steel castings and iron castings but also provides forgings, profile machined parts, cut sheet metal parts, welded structural parts, surface-treated parts, and assembly parts. Through multi-process collaboration and finished product delivery, the company can match corresponding casting or processing solutions based on the customer's part weight, material system, structural complexity, precision requirements, batch size, and cost targets. For original sheet metal welded parts, forgings, or ordinary sand castings, Ningbo Qianhao can also participate in structural optimization, process substitution, and cost improvement based on the characteristics of the casting process. For example, in a forklift mast crossbeam project, the company's engineering team changed the original sheet metal welded structure to an integral lost wax casting through force analysis and casting process optimization. The customer reported a 25% reduction in product weight and a 20% cost reduction. In a rail transit buffer system parts project, lost foam casting helped the customer balance the requirements of larger casting weight, physical and chemical performance requirements of precision casting, and subsequent machining cost control.
Ningbo Qianhao’s application industries cover automobiles and trucks, rail transit, construction machinery, forklifts, agricultural machinery, ships, petroleum machinery, construction, pumps and valves, electromechanical, hardware tools, and power equipment. The company began exporting in 2003 and has established cooperative relationships with enterprises such as Bombardier, HYUNDAI, TOYOTA, VOLVO, TESLA, Wabtec, JCB, KION, HELI, and CLAAS. Its service targets include European, American, Japanese, and Korean customers, domestic foreign-funded enterprises, trading companies, and leading domestic enterprises. In the rail transit field, it can provide castings for braking systems, damping systems, buffers, couplers, bogies, frames, and rails. In the automotive field, it mainly serves commercial vehicles and their axles, suspensions, trailers, hydraulics, transmissions, and frames. In the construction machinery and forklift fields, it can provide wear-resistant parts, load-bearing parts, pressure-bearing parts, and high-precision connecting parts.
In terms of quality and management, Ningbo Qianhao has been recognized as a national-level specialized and new "Little Giant", a high-tech enterprise, and a municipal-level smart factory. It also holds system or certification qualifications such as IATF16949, ISO14001, ISO45001, EN-ISO-3834-2, and EN 15085-2. The company obtained ISO9001:2000 certification in 2001, TS16949:2009 and ISO14001:2004 certification in 2011, and continues to build automated and semi-automated production lines and environmental protection devices. Overall, the differentiation of Ningbo Qianhao lies not only in the variety of steel casting processes and capacity scale but also in its ability to integrate precision casting, lost foam casting, machining, sheet metal welding, surface treatment, and assembly into a practical supply chain service. It is suitable for OEM customers who require stable quality, scale supply, process substitution, supplier integration, and final finished product delivery.