Manufacturer of ductile iron and grey iron castings for automotive, rail transport, pipelines and household appliances
苏州石川制铁有限公司 (Suzhou Ishikawa Iron Manufacturing Co., Ltd.)
Suzhou (CN)New on Amplifa
About Suzhou Ishikawa Iron Manufacturing (SIIM)
Suzhou Ishikawa Iron Manufacturing Co., Ltd. (SIIM) is a high-tech company founded in 1994 and based in Suzhou (China), which develops and manufactures castings made of ductile iron (spheroidal graphite cast iron) and grey cast iron. The company emerged from the civilian economic cooperation of the sister-city partnership between Suzhou and Kanazawa; founder 盐谷由荣 (Shiotani Yoshie) brought Japanese foundry technology to China. The portfolio includes components for automotive (e.g. main bearing caps, differential housings, rocker arms, balance shafts), rail transport, pressure pipelines/valves and household appliances (air-conditioning compressor components). Processes include sand casting, a patented sandwich spheroidization process with automated molten-metal transport, and tool-free 3D sand mold printing, which reduces production times by approx. 75% and costs by approx. 20%. In addition, SIIM offers lightweight design, technical cost reduction and machining of cost-reduced SSF materials. Customers such as Foton Cummins have repeatedly recognized the company as a Zero Defect Supplier; production is supported by six digitalized quality assurance systems with 5G networking and four automated high-bay warehouses.
- Site
- Suzhou, China
- Processes
- 球墨铸铁铸造 (Ductile iron casting), 灰铸铁铸造 (Grey cast iron casting), 砂型3D打印 (Sand mold 3D printing, without tooling/pattern), 三明治球化工艺 (Sandwich spheroidization process with automated molten-metal transport), 铸件研发定制与制造 (Castings: 汽车类 automotive, 轨道类 rail, 压力管道类 pressure pipelines, 家电类 household appliances), 加工降本SSF材 (machining cost-reducing SSF materials), 轻量化设计 (lightweight design), 技术降本 (technical cost reduction)
- Materials
- 球墨铸铁 (ductile iron/spheroidal graphite cast iron), 灰铸铁 (grey cast iron), Ductile iron (spheroidal graphite cast iron), Grey cast iron, 3D sand mold printing, Sandwich spheroidization process, SSF materials (machining cost-reduced)
- Certificates
- Zero Defect Supplier (Foton Cummins)
- Founded
- 1994
- Industries
- Automotive, Rail transport, Pipelines/valves, Household appliances, Pipelines/valves (pressure lines), Household appliances (air-conditioning compressor components)
- 01
Development and design (lightweight design, technical cost reduction)
- 02
3D sand mold printing / mold making
- 03
Melting operation including sandwich spheroidization with automated transport
- 04
Casting
- 05
Automated warehouse logistics (4 automated high-bay warehouses)
- 06
Digital quality inspection (6 systems, 5G networking)
- 07
Delivery to customers worldwide
Materials and Processes
Ductile iron (spheroidal graphite cast iron)
Core material for automotive, rail, pipeline and household appliance components, also processed in the sandwich spheroidization process.
Grey cast iron
Casting material for components such as cylinders, valve housings and brackets.
3D sand mold printing
Tool-free printing of foundry sand molds directly from 3D data; production time -75%, costs -20% according to the company.
Sandwich spheroidization process
Nationally patented process with an automated hot-metal transfer system for treating molten cast iron.
SSF materials (machining cost-reduced)
Material selection to reduce machining costs for post-machined castings.
Sites
Suzhou
CNProduction site / headquarters
- Materials
- Ductile iron, grey cast iron
- Sand mold 3D printing system
- 4 automated high-bay warehouses
- Automated molten-metal transport system (sandwich spheroidization)
- Magnetic separation/slag recycling system (in-house development, 2025)
- Distributed photovoltaic system (2026)
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| 球墨铸铁铸造 (Ductile iron casting)Casting | – | – | – | – | 球墨铸铁 |
| 灰铸铁铸造 (Grey cast iron casting)Casting | – | – | – | – | 灰铸铁 |
| 砂型3D打印 (Sand mold 3D printing, without tooling/pattern)Additive | – | – | – | – | 铸造型砂 (foundry sand) |
| 三明治球化工艺 (Sandwich spheroidization process with automated molten-metal transport)Casting | – | – | – | – | 球墨铸铁 |
| 铸件研发定制与制造 (Castings: 汽车类 automotive, 轨道类 rail, 压力管道类 pressure pipelines, 家电类 household appliances)Casting | – | – | – | – | 球墨铸铁, 灰铸铁 |
| 加工降本SSF材 (machining cost-reducing SSF materials)Machining | – | – | – | – | – |
| 轻量化设计 (lightweight design)Engineering | – | – | – | – | – |
| 技术降本 (technical cost reduction)Engineering | – | – | – | – | – |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 砂型3D打印机 (sand mold 3D printing system) | – | – | – | – | 苏州 (Suzhou) |
| 自动化仓储立库 (automated high-bay warehouse) | – | 4 | – | – | 苏州 (Suzhou) |
| 炉渣碎铁磁选回收设备 (magnetic separation/slag recycling system) | 苏州石川 (in-house developed) | – | – | 2025 | 苏州 (Suzhou) |
| 三明治球化工艺铁水自动搬运系统 (automated molten-metal transport system) | – | – | – | – | 苏州 (Suzhou) |
| 分布式光伏电站 (photovoltaic system) | – | – | – | 2026 | 苏州厂区 (Suzhou) |
Additional services
Reference customers
Quality
Quality assurance is based on six digitalized management systems (raw material intake, production execution, equipment monitoring, warehouse management) that are networked via 5G and form an end-to-end quality control chain from order to improvement. Foton Cummins has repeatedly honored SIIM as a Zero Defect Supplier.
| Evidence | Suzhou |
|---|---|
| Zero Defect Supplier (Foton Cummins) |
History
- 1994
Founded as a result of the sister-city partnership between Suzhou and Kanazawa; founder 盐谷由荣 brought Japanese foundry technology to China.
- 2025
Recognition as a Zero Defect Supplier by Foton Cummins, national patents (including sandwich spheroidization process, automated molten-metal transport system), introduction of 3D sand mold printing (production time -75%, costs -20%) as well as six customer awards; commissioning of the self-developed
- 2026
Commissioning of the distributed photovoltaic power plant on the factory site (August 2026).