The sand casting industry is vast and comprises numerous manufacturers worldwide. While it is challenging to provide an exhaustive list of all sand casting manufacturers, I can offer an overview of some well-known and reputable companies in the industry:

1. ZHY Casting:ZHY was founded in 2004, leading by a group of senior engineers with decades of experience and academic achievements in manufacturing industry.
2. Waupaca Foundry: Waupaca Foundry is one of the largest iron foundries in the world, specializing in gray iron, ductile iron, and compacted graphite iron castings. They serve a wide range of industries, including automotive, agriculture, construction, and more.
3. Alcast Technologies: Alcast Technologies is a leading aluminum sand casting foundry known for producing high-quality aluminum castings for various applications, including automotive, aerospace, and marine.
4. Bodine Aluminum: Bodine Aluminum is a prominent aluminum sand casting company, providing custom castings for industries such as automotive, appliance, and industrial equipment.
5. Carteret Die Casting Corporation: Carteret Die Casting is a family-owned company specializing in aluminum and zinc die casting, as well as sand casting, serving industries like electronics, lighting, and automotive.
6. Casting Solutions: Casting Solutions is a full-service sand casting foundry that produces parts for industries ranging from automotive and agriculture to energy and construction.
7. The C.A. Lawton Co.: Lawton specializes in large iron castings and offers a range of casting services, including green sand, air set, and shell mold casting.
8. Bremen Castings: Bremen Castings is a foundry that primarily focuses on producing complex gray and ductile iron castings for diverse industries.
9. Victaulic: Victaulic is a global manufacturer of mechanical pipe joining systems, and their sand casting capabilities allow them to produce components for their products.
10. Fonderie Saguenay: Fonderie Saguenay is a Canadian foundry specializing in sand and permanent mold casting, producing parts for industries like mining, forestry, and energy.
11. Badger Alloys: Badger Alloys is an aluminum and bronze sand casting foundry that serves various industries, including agriculture, construction, and marine.

It’s important to note that the list above represents just a few examples of sand casting manufacturers, and there are many other reputable companies worldwide. When choosing a sand casting manufacturer, consider factors such as their expertise, certifications, quality assurance processes, capabilities, and their ability to meet your specific requirements and production volumes. It’s also advisable to conduct further research and seek recommendations to find the best fit for your casting needs.