Are you looking for reliable steel casting manufacturers for pumps, valves, heavy equipment, energy systems, or other industrial applications? Do you need a foundry that can handle different steel grades, complex casting geometries, machining, heat treatment, and quality inspection? Or are you looking for a supplier that can manufacture customized steel castings according to your drawings and technical specifications?
If the answer is yes, this guide can help you compare established steel casting manufacturers in the United States and China. These foundries differ in casting methods, material capabilities, production size, machining services, industries served, and customization options. Below, we present 10 steel casting manufacturers to help you identify suppliers that match your part requirements, production volume, material specification, and quality expectations.
The List of Steel Casting Manufacturers in the USA and China
| Manufacturer | Steel Casting Focus | Main Products | Key Applications |
|---|---|---|---|
| Besser Casting Co., Ltd. | Precision investment steel castings | Water valve castings, pump impeller castings, gas valve castings, tool castings | Pumps and valves, hydraulic equipment, construction hardware, agricultural equipment |
| Fisher Cast Steel | Stainless and carbon steel castings | Pump impeller castings, pump housing castings, hydroelectric turbine castings, aerospace tooling castings | Pumps and valves, power generation, hydropower, aerospace tooling |
| Eagle Alloy | Custom carbon and stainless steel castings | Oil and gas valve body castings, pump housing castings, impeller castings, industrial equipment steel castings | Oil and gas, pumps and valves, industrial equipment, engineering applications |
| Badger Alloys, Inc. | Sand-cast steel components for pumps and valves | Pump impeller castings, pump housing castings, valve body castings, pressure-containing steel castings | Pumps, valves, water treatment, oil and gas, chemical equipment |
| Maynard Steel Casting Company | Large carbon and low-alloy steel castings | Mining equipment steel castings, crusher components, gear housing castings, heavy machinery steel castings | Mining, construction equipment, heavy machinery, defense, energy |
| Southwest Steel | Carbon, stainless, alloy and heat-resistant steel castings | Mining equipment steel castings, energy equipment steel castings, marine steel castings, railroad steel castings | Mining, energy, marine equipment, railroad, construction, military |
| Quaker City Castings | No-bake and centrifugal steel castings | Pump housing steel castings, valve body steel castings, locomotive steel castings, steel mill process castings | Pumps and valves, steel mills, power generation, locomotive and transportation |
| Dawang Metals | Custom investment and sand steel castings | Petrochemical valve steel castings, pump body steel castings, pressure-rated steel castings, marine stainless steel castings | Petrochemical, oil and gas, marine equipment, chemical processing |
| CFS Foundry | Precision steel investment castings | Stainless steel investment castings, carbon steel investment castings, alloy steel investment castings, precision steel valve castings | Industrial equipment, valves, machinery, custom engineered components |
| Harrison Steel Castings Company | Large engineered carbon and alloy steel castings | Mining equipment structural steel castings, heavy equipment steel castings, energy equipment steel castings, oil and gas steel castings | Mining, heavy equipment, energy, oil and gas, agriculture |
1. Besser Casting Co., Ltd.
Established: 2002
Headquarters: Ningbo, China
Main Products: Water Valve Castings, Pump Impeller Castings, Gas Valve Castings, Tool Castings
Company Profile
Besser Casting was established in 2002 in Ningbo and specializes in precision investment casting for international industrial customers. Steel casting is a core part of its business, with silica sol investment casting and vacuum investment casting used for complex and precision components. The company reports experience with more than 4,000 developed products and more than 200 material types, including stainless steel, carbon steel, low-alloy steel, tool steel, nickel-based alloys, and other specialized materials. Its current manufacturing capabilities include investment casting, heat treatment, CNC machining, surface finishing, and assembly. Besser has produced steel castings such as pump castings, valve castings, water valve castings, gas valve castings, tool castings, and impeller castings. Its published industries include automotive, construction hardware, agricultural equipment, hydraulic equipment, valve and pump applications, and other industrial sectors. The company supports customized production according to drawings, samples, material requirements, dimensional tolerances, and inspection specifications.
Suitable Customers: Pump and valve OEMs, hydraulic equipment manufacturers, industrial equipment companies, construction hardware buyers, automotive suppliers, agricultural equipment manufacturers, and international buyers requiring customized precision steel castings.
2. Fisher Cast Steel
Established: 1957
Headquarters: West Jefferson, Ohio, USA
Main Products: Pump impeller castings, pump housing castings, hydroelectric turbine castings, aerospace tooling castings
Company Profile
Fisher Cast Steel was established in 1957 and has built its business around stainless steel and carbon steel casting. The company operates both sand/no-bake and investment casting capabilities, allowing it to handle a broad range of casting sizes and geometries. Its sand casting operation can produce stainless and carbon steel castings up to approximately 8,500 pounds, while its investment casting operation handles smaller precision components. Fisher works with a broad material range including austenitic, martensitic, duplex, precipitation-hardening, ferritic and heat-resistant stainless steels, carbon and low-alloy steels, nickel-based alloys, cobalt-based alloys, and other specialized materials. Steel casting is used across pump and valve applications, power generation, hydropower, aerospace tooling, pulp and paper, and industrial equipment. The company also supports engineering, pattern, heat-treatment, and non-destructive testing requirements for customized projects.
Suitable Customers: Pump and valve OEMs, power-generation companies, hydropower equipment manufacturers, aerospace tooling buyers, pulp and paper equipment manufacturers, and industrial equipment companies.
3. Eagle Alloy
Established: 1979
Headquarters: Muskegon, Michigan, USA
Main Products: Oil and gas valve body castings, pump housing castings, impeller castings, industrial equipment steel castings
Company Profile
Eagle Alloy began operations in 1979 and has developed into a U.S.-based steel foundry specializing in custom carbon and stainless steel castings. Steel casting is at the center of its manufacturing operation, supported by shell molding and air-set casting processes. The company operates a large manufacturing facility with high-capacity induction furnaces, robotic grinding, 3D casting simulation, coordinate measuring equipment, and other production and inspection technologies. Eagle Alloy manufactures carbon steel, stainless steel, and specialty alloy castings for demanding applications where dimensional consistency and material performance are important. Its published applications include pump components, oil and gas components, valve bodies, impellers, manifolds, and other industrial castings. The company also provides machining, heat treatment, finishing, and engineering support, making it suitable for customers that need more than a rough casting.
Suitable Customers: Oil and gas equipment manufacturers, pump OEMs, industrial equipment manufacturers, valve companies, engineering companies, and buyers requiring repeat-production steel castings.
4. Badger Alloys, Inc.
Established: 1966
Headquarters: Milwaukee, Wisconsin, USA
Main Products: Pump impeller castings, pump housing castings, valve body castings, pressure-containing steel castings
Company Profile
Founded in 1966, Badger Alloys has evolved from a traditional sand foundry into a full-service casting manufacturer with an air-set foundry, pattern facility, engineering resources, and machine shop on one manufacturing campus. Steel casting is a central part of its business, with a strong specialization in pump and valve components. The company states that its foundry can work with more than 200 alloys and can produce industrial castings ranging from approximately 1 pound to more than 4,000 pounds depending on the application. Its steel casting capabilities include carbon and low-alloy steels, stainless steels, and other grades selected for strength, corrosion resistance, temperature performance, and pressure service. Badger Alloys is particularly experienced in pump impellers and can machine keyways, balance impellers, and assemble finished components according to customer requirements. It also supports heat treatment, NDT, casting simulation, and prototype production.
Suitable Customers: Pump manufacturers, valve manufacturers, water-treatment companies, oil and gas companies, chemical and pharmaceutical equipment manufacturers, energy companies, and industrial OEMs.
5. Maynard Steel Casting Company
Established: 1907
Headquarters: Milwaukee, Wisconsin, USA
Main Products: Mining equipment steel castings, crusher components, gear housing castings, heavy machinery steel castings
Company Profile
Maynard Steel Casting Company was established in 1907 and has spent more than a century focused on steel casting. The company specializes primarily in carbon and low-alloy steel castings and can manufacture castings ranging from approximately 1,000 to 35,000 pounds. Its production infrastructure includes electric arc furnaces, large-capacity ladles, heat treatment, cleaning, finishing, engineering, metallurgical analysis, solidification modeling, and advanced non-destructive testing. Maynard works with a broad range of AISI and ASTM steel grades and can develop material specifications around the mechanical and environmental requirements of a customer's application. Its steel castings are used in mining equipment, construction, earth-moving equipment, defense, heavy machinery, energy, and offshore drilling. The company supports both one-off projects and repeat production, making it suitable for large engineered components as well as ongoing OEM programs.
Suitable Customers: Mining equipment OEMs, construction equipment manufacturers, heavy machinery companies, defense contractors, energy companies, offshore equipment manufacturers, and buyers requiring large carbon or low-alloy steel castings.
6. Southwest Steel
Established: 1971
Headquarters: Longview, Texas, USA
Main Products: Mining equipment steel castings, energy equipment steel castings, marine steel castings, railroad steel castings
Company Profile
Founded in 1971, Southwest Steel operates a steel foundry in Longview, Texas, with a production facility of approximately 150,000 square feet and a casting range reaching up to 6,000 pounds. Steel casting is its primary manufacturing focus, and the company supports both small production runs and larger high-volume projects. Its material capabilities include carbon steel, stainless steel, low-alloy steel, high-alloy steel, heat-resistant steel, and low-temperature grades, with additional capability for specialty alloys such as Hastelloy and Inconel. Southwest Steel uses chemical, physical, and non-destructive testing as part of its quality-control process and employs optical emission spectrometry to control chemical composition during melting. The company serves energy, mining, marine, construction, railroad, military, and other industrial markets and supports projects from prototype through production.
Suitable Customers: Mining companies, energy equipment manufacturers, marine equipment manufacturers, railroad suppliers, construction equipment OEMs, military contractors, and industrial buyers requiring customized steel components.
7. Quaker City Castings
Established: 1932
Headquarters: Salem, Ohio, USA
Main Products: Pump housing steel castings, valve body steel castings, locomotive steel castings, steel mill process castings
Company Profile
Quaker City Castings is a family-owned foundry with roots dating back to 1932 and is located in Salem, Ohio. Its steel casting business is built around no-bake sand casting and centrifugal casting, with capabilities for large and complex components. The foundry produces steel, stainless steel, alloy steel, and nickel-base castings and can manufacture large steel castings in the several-thousand-pound range. Its published casting applications include pump housings, valve bodies, locomotive components, steel mill process castings, power-generation components, and other heavy industrial parts. The company also provides heat treatment, blasting, welding, machining, and non-destructive testing, allowing customers to source finished or semi-finished cast components from one supplier. Its no-bake process and engineering capabilities are particularly useful for complex shapes and larger castings.
Suitable Customers: Pump and valve manufacturers, steel mills, power-generation companies, locomotive and transportation companies, defense contractors, aerospace-related buyers, and heavy industrial OEMs.
8. Dawang Metals
Established: 1998
Headquarters: China
Main Products: Petrochemical valve steel castings, pump body steel castings, pressure-rated steel castings, marine stainless steel castings
Company Profile
Dawang Metals was founded in 1998 and developed from its Chinese manufacturing base into a global metal casting supplier. Steel casting is one of its core manufacturing areas, alongside other casting and fabrication processes. The company reports more than 500 full-time employees and approximately 18,000 tons of casting capacity. Its steel casting capabilities cover stainless steel, carbon steel, alloy steel, and other materials, with production methods including investment casting, sand casting, and shell casting. Dawang's published applications include petrochemical equipment, valves, pumps, flanges, fittings, marine components, and other industrial parts exposed to pressure, corrosion, or demanding operating conditions. The company supports custom OEM projects and combines casting with machining and additional fabrication services when required.
Suitable Customers: Petrochemical companies, oil and gas equipment manufacturers, pump and valve OEMs, marine equipment manufacturers, chemical-processing companies, and international industrial buyers sourcing customized steel castings.
9. CFS Foundry
Established: 1998
Headquarters: Ningbo, China
Main Products: Stainless steel investment castings, carbon steel investment castings, alloy steel investment castings, precision steel valve castings
Company Profile
CFS Foundry has operated as a China-based metal casting and CNC machining company since 1998 and began exporting to overseas markets in 2003. Steel casting is an important part of its custom casting business, with investment casting providing a route for producing relatively complex components with controlled dimensions and repeatable geometry. Its manufacturing operation includes investment casting and CNC machining, and its machining workshop includes 3-axis, 4-axis, and 5-axis equipment. CFS works with stainless steel, carbon steel, alloy steel, and other casting materials depending on the project. Its customer base includes international buyers from markets such as the United States, Australia, the United Kingdom, and Canada. The company supports custom metal components based on customer drawings and can combine casting with machining when a finished component is required.
Suitable Customers: Industrial OEMs, valve manufacturers, equipment manufacturers, machinery companies, engineering firms, and international buyers looking for precision steel castings with secondary machining.
10. Harrison Steel Castings Company
Established: 1906
Headquarters: Attica, Indiana, USA
Main Products: Mining equipment structural steel castings, heavy equipment steel castings, energy equipment steel castings, oil and gas steel castings
Company Profile
Harrison Steel Castings Company traces its history to 1906 and has developed into a large, vertically integrated steel foundry in Attica, Indiana. Steel casting is the company's core manufacturing business, with a particular focus on highly engineered carbon and low- and medium-alloy steel castings. Its facility covers approximately 700,000 square feet and can produce castings from about 400 to 18,000 pounds net casting weight. The company operates electric arc furnaces and integrates pattern production, molding, melting, heat treatment, non-destructive examination, rough machining, finish machining, painting, and packaging. Its material capabilities include carbon steel, low- and medium-alloy steels, pressure-vessel grades, high-strength grades, and customer-specified materials. Harrison Steel serves agriculture, heavy equipment, energy, military, mining, forestry, and oil and gas customers and supports engineered casting projects based on customer drawings and specifications.
Suitable Customers: OEMs, mining equipment manufacturers, heavy machinery manufacturers, energy equipment companies, oil and gas equipment manufacturers, and buyers requiring large engineered steel castings.
Frequently Asked Questions
1. What dimensional tolerance can a steel casting achieve?
There is no single tolerance that applies to every steel casting. The achievable tolerance depends on the casting process, part size, geometry, material, mold design, and whether the dimension is as-cast or machined. Investment casting is generally selected when a smaller and more complex part requires relatively tight as-cast dimensions, while large sand castings normally require machining on critical surfaces. For a purchasing project, identify critical dimensions on the drawing rather than applying a very tight tolerance to every dimension. This can reduce unnecessary machining and casting cost.
2. Do I need X-ray or other NDT for my steel castings?
Not every steel casting requires the same level of NDT. The requirement should depend on the part's safety function, pressure exposure, load, material, and applicable industry standard. Radiographic testing can help identify internal discontinuities, while ultrasonic testing can be useful for internal inspection of suitable geometries. Magnetic-particle and dye-penetrant testing are commonly used for surface or near-surface discontinuities. For critical components, define the inspection method, inspection percentage, acceptance criteria, and reporting format before production rather than adding them after the parts are finished.
3. What steel grade should I choose for a casting?
Do not choose a steel grade only because it has a lower material price. Start with the actual operating environment. Carbon and low-alloy steels are commonly selected where strength and general mechanical performance are important, while stainless, duplex, nickel-based, and heat-resistant grades may be more appropriate for corrosion, temperature, or chemical exposure. For example, pump and valve components exposed to corrosive media may require a corrosion-resistant stainless or duplex grade. The foundry should review the medium, temperature, pressure, wear condition, required mechanical properties, and applicable standard before confirming the material.
4. How can I reduce porosity, shrinkage, cracks, or other casting defects?
Most casting defects should be addressed during engineering and process design rather than after production. Ask the supplier whether it uses casting simulation, controlled melting, temperature control, appropriate gating and risering design, heat treatment, and inspection procedures. For critical parts, specify acceptable defect limits and required NDT before production starts. Radiographic, ultrasonic, magnetic-particle, or dye-penetrant testing may be appropriate depending on the part and defect type. You should also agree in advance on what constitutes a reject instead of relying on a general statement such as “100% quality inspection.”
5. Can steel castings be machined after casting?
Yes. Machining is common when the casting contains bearing seats, sealing surfaces, holes, threads, keyways, mounting faces, or other tight-tolerance areas. However, the casting drawing should identify machining allowances and finished dimensions before tooling is made. If the supplier provides both casting and machining, it can also reduce the risk of dimensional problems caused by transferring the part between different companies. For components such as pump impellers, concentricity, shaft fit, keyway dimensions, and balancing requirements should be defined separately.
Conclusion
The right steel casting supplier should be selected according to your application, casting method, material grade, part weight, machining and heat-treatment requirements, NDT standards, production volume, and delivery schedule. For pump and valve components, pressure integrity, corrosion resistance, machining, and balancing may be critical, while mining and heavy equipment castings may require greater attention to casting weight, wear resistance, impact resistance, and internal quality. For buyers seeking a China-based supplier for customized steel castings, BESSER supports silica sol and vacuum investment casting for stainless steel, carbon steel, low-alloy steel, tool steel, nickel-based alloys, and other materials, with products including pump castings, valve castings, and impeller castings.
If you also need custom lock castings or lock components, BESSER provides investment-casting solutions for construction hardware, including lock bodies, lock mechanisms, handles, hinge assemblies, and door closure components. You can send your drawings, samples, material specifications, quantities, dimensional requirements, and inspection standards through the BESSER contact page to discuss your steel casting or lock casting project.