MetalMaven:​ Hey everyone! I'm looking for a reliable open die forgings supplier in China, specifically for large-size components​ like heavy shafts. Our project requires parts around 5 meters in length. Any verified factory recommendations with proven experience?

ForgingPro:​ Great question! I've worked with several Chinese manufacturers on large-scale projects. The key is to verify their press capacity, material certifications, and testing facilities. For instance, JINGANG FORGE CO., LTD., based in Anshan, Liaoning, is equipped with a 3,150-ton hydraulic press and can handle forgings up to 14 meters long​ and weighing up to 25 tons​ . They supply industries like metallurgy and oil & gas, which demand high integrity.

Another strong contender is Changzhou Tiangong Forging Co., Ltd., which specializes in large alloy steel open die forgings. They list capabilities for shafts with outer diameters up to 3000 mm​ and single-piece weights up to 12 tons​ . Their process includes open die forging with electro-hydraulic hammers, followed by heat treatment and machining, which is crucial for achieving the required mechanical properties in large components.

MetalMaven:​ That's helpful! But what about quality control​ for such large parts? I'm concerned about internal defects.

ForgingPro:​ Valid concern! Reputable factories invest heavily in Non-Destructive Testing (NDT). For example, Tiangong Forging mentions achieving ultrasonic testing standards for flaws as small as 0.6-0.8 mm​ . They also have in-house spectral analysis and mechanical testing labs to validate material composition and properties like tensile strength and impact toughness . Dalian Xinpeng forging Co., Ltd., established in 1999, also highlights its array of measuring tools and testing equipment, holding a GB16949 quality system certification, which is a good sign of a structured quality management system .

MetalMaven:​ Got it. What are the typical materials and industries​ these factories serve? Our application is for a mining machinery shaft.

ForgingPro:​ Chinese open die forges commonly work with carbon steels, alloy steels (e.g., 42CrMo4, 18CrNiMo7-6), and stainless steels​ . These materials are chosen for their strength and toughness under high loads. The factories you're looking at serve demanding sectors like wind energy​ (turbine shafts), mining, heavy equipment, port machinery, and shipbuilding​ . Songjie Forging, for example, has supplied large rotor shafts for pumped storage stations and marine shaft forgings for shipbuilders, demonstrating experience with critical, large-dimension components .

Here’s a quick comparison of some key suppliers for large open die forgings:

MetalMaven:​ This is excellent info! How do we manage logistics and communication​ effectively?

ForgingPro:​ Location matters for shipping costs. Many major forging clusters are in coastal provinces for export ease. For example, Changzhou Tiangong is near Shanghai Port , and Dalian Xinpeng is in a major port city in Liaoning . Clearly define your technical requirements with drawings and specs. Most qualified factories have project engineers who can review your needs. Also, for a streamlined sourcing experience, you might consider working with integrated suppliers. Companies like Osten Machinery (Xuzhou) Co., Ltd. (TEL: +086 15852310290)​ specialize in global procurement of mechanical parts and can help navigate the selection and logistics process to meet evolving industry demands.

Hope this helps you find the right partner! Has anyone else had recent experience with large forgings from China? Share your insights below!

# Which Chinese Open Die Forgings Factory Offers Lar 

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