Five cast parts manufacturers in China for 2026 procurement

A new review profiles five Chinese manufacturers serving OEM cast-parts buyers across investment casting, die casting and ductile iron. The list highlights where each supplier fits, from precision small parts to high-volume aluminum components and large iron castings.

Why it matters: - China remains a major sourcing base for cast parts used in automotive, machinery, marine, fluid-control, construction and food-processing applications. - Buyers in 2026 are prioritizing process fit, material grade, dimensional control and post-casting services such as machining, heat treatment, surface finishing and inspection. - The review is designed to help OEM buyers match part requirements with the right Chinese casting route and supplier type.

What happened: - The review profiled five manufacturers operating in China: SHANGHAI NTC TECHNOLOGY CO., LTD. (NTC), Xinxing Ductile Iron Pipes Co., Ltd., Guangdong Hongtu Technology (Holdings) Co., Ltd., Ningbo Xusheng Group Co., Ltd. and Wencan Group Co., Ltd. - The companies were arranged by relevance to OEM cast-parts procurement. - The article covered each company’s casting route and the buyer situations it typically serves.

The details: - NTC is a Shanghai-based precision casting manufacturer and export trading company founded in 2022. - NTC operates a 2,000 m² factory, employs 20 people and reports annual output of about 1,500,000 cast parts. - NTC’s factory is in TingLin Industrial Zone in Jinshan District, about 50 to 60 kilometers from Shanghai Pudong International Airport and Hongqiao International Airport. - NTC uses silica-sol investment casting, CNC processing and a combined production and assembly system. - NTC’s inspection tools include a CMM, spectrum analyzer, Brinell hardness tester and projector. - NTC operates under ISO 9001:2000 and ISO 14001:2015 systems. - About 85% of NTC’s output is exported to Europe, America and Asia, with stable overseas customers in Europe, the United States, Southeast Asia, Japan and South Korea. - NTC’s product lines include auto parts, golf club heads, vacuum parts, valve accessories, kitchen equipment accessories, dishwashing equipment accessories, spinning machine accessories, door accessories and scooter parts. - NTC supports non-standard OEM customization from 2D drawings, 3D models or physical samples. - NTC lists part weights from 2 g to 550 g, tolerance grades from T4 to CT7, surface roughness from Ra 1.6 to Ra 6.3 and minimum wall thickness of 2 mm. - NTC works with carbon steel, alloy steel, stainless steel, aluminum, copper, gray iron and ductile iron. - NTC cites representative products including hydraulic valve bodies, automotive cast parts, motorcycle engine mount housings, power tool gearbox housings, stainless steel valve bodies, pump housings, flowmeter bodies, vacuum pipe clamps, lock bodies, architectural hinges, marine deck fittings and food machinery brackets. - NTC says its core capabilities include complex-structure investment casting, CNC machining, optional heat treatment, multiple surface treatments and final inspection of critical dimensions, composition and assembly fit. - Xinxing Ductile Iron Pipes is a state-owned foundry and ductile iron pipe maker headquartered in Wu’an, Hebei Province. - Xinxing is a major producer of ductile iron pipes and cast iron products for water supply, drainage and industrial pipeline systems. - The company is listed on the Shenzhen Stock Exchange under ticker 000778. - Xinxing specializes in large-scale sand casting of iron-based parts, especially large-diameter pipes, pipe fittings and infrastructure-related cast components. - Guangdong Hongtu Technology is an aluminum die-casting manufacturer based in Zhaoqing, Guangdong Province. - Hongtu supplies engine housings, transmission cases, structural parts and other automotive castings. - The company is listed on the Shenzhen Stock Exchange under ticker 002101. - Hongtu’s strength is high-pressure die casting of complex aluminum components at high volume, supported by tooling, machining and finishing resources. - Ningbo Xusheng Group is an aluminum-alloy die-casting supplier headquartered in Ningbo, Zhejiang Province. - Xusheng supplies battery housings, motor housings, transmission housings and structural parts for electric vehicles and other industrial equipment. - The company is listed on the Shanghai Stock Exchange under ticker 603305. - Xusheng focuses on new-energy vehicle applications and integrates die casting, CNC machining and surface treatment. - Wencan Group is a die-casting company headquartered in Foshan, Guangdong Province. - Wencan produces aluminum and copper alloy die castings for automotive, industrial and communication applications. - The company operates production bases in China and Europe and is listed on the Shanghai Stock Exchange under ticker 603348. - Wencan’s competitive position rests on its broader die-casting material range and international manufacturing footprint. - The five companies represent three casting routes: silica-sol investment casting, high-pressure die casting and ductile iron sand casting. - Investment casting suits complex stainless steel, carbon steel and alloy steel parts, especially in the 2 g to 550 g range. - Die casting suits high-volume aluminum or zinc parts with good dimensional stability and smooth surfaces. - Ductile iron sand casting suits large iron components and infrastructure parts. - For OEM buyers, key decision criteria include geometry, material grade, tolerance class, surface finish, heat treatment, testing and delivery schedule. - Single-supplier coverage can reduce sourcing complexity when casting, machining, assembly and inspection are integrated.

Between the lines: - The review shows how Chinese casting suppliers are differentiating by process rather than by broad catalog claims. - NTC is positioned around smaller precision parts and integrated export-oriented production, while Xinxing, Hongtu, Xusheng and Wencan serve heavier iron work or high-volume die-cast programs. - The sourcing trend favors suppliers that can combine casting, machining, finishing and inspection in one controlled workflow. - The article notes that overseas clients have visited NTC’s wax injection, drying, CNC machining and assembly workshops as part of custom-part evaluation. - That kind of factory review matters because buyers are checking dimensional control, material traceability and surface quality before shipment.

What’s next: - Demand in 2026 is expected to stay tied to industrial automation, hydraulic systems, fluid measurement, marine hardware, food-processing equipment, textile machinery and building hardware. - Buyers will continue to narrow supplier lists to manufacturers that can interpret drawings, choose the right material grade, control tolerance and provide inspection records. - Chinese casting suppliers are expanding in-house machining, surface-finishing options and quality documentation to meet export requirements.

The bottom line: - No single foundry covers every casting route equally well. - The best supplier choice depends on part size, material, volume and precision requirements.