Custom Pump Housing Manufacturer

China Simis Company is a specialized OEM custom manufacturer of high-quality Casting Pump Housings and Pump Bodies (Casings) for centrifugal, axial flow, and positive displacement pumps. As the primary containment and support structure for fluid machinery, the Pump Housing is the primary pressure-boundary component that contains the fluid, directs it into the impeller, and converts velocity into pressure. The pump housing must withstand the internal pressures generated by the system, resist the effects of the fluid being processed (corrosion, chemical attack), and maintain high dimensional stability.

Our components are engineered for severe-duty applications in petrochemical, mining (slurry pumps), and marine environments. We offer comprehensive material solutions, including Gray Iron (excellent damping), Ductile Iron (toughness), Carbon Steel (pressure), Stainless Steel (corrosion), Alloy Steel (abrasion/high temp) and Aluminum Alloy. We utilize advanced casting methods (Sand Casting, Shell Mold Casting,Lost Foam Casting, Investment Casting, Pressure Die Casting ) to ensure superior pressure integrity (leak-free) and optimal surface finishes to mitigate cavitation and flow loss.

What Are the Classification and Characteristics of Pump Housings?

What Are the Key Manufacturing Processes for Pump Housings and Bodies?

We select the casting process based on the pump’s size, internal flow complexity, and material requirements.

How to Select the Right Material for Casting Pump Housings and Bodies?

The material choice is dictated by the operating environment and the characteristics of the fluid being handled (temperature, corrosivity, presence of abrasives).

What Quality Assurance Measures Ensure the Pressure Integrity of Casting Pump Housings?

For pump casings, internal quality control is paramount because flaws (porosity, shrinkage) lead directly to system failure through leakage.

·Internal Soundness Verification: 

RT (Radiographic Testing) or UT (Ultrasonic Testing) is mandatory for high-pressure/critical steel and alloy casings to ensure the absence of internal shrinkage or gas porosity defects that compromise pressure holding capacity.

·Leak Testing Protocols: 

Every critical housing undergoes Hydrostatic Pressure Testing after final machining to verify its integrity against internal pressure loads and prevent costly field failures due to micro-porosity.

·Dimensional Accuracy (Clearance): 

CMM (Coordinate Measuring Machine) verification of the impeller chamber dimensions, shaft bore concentricity, and flange face flatness is performed to ensure the required running clearances are maintained for optimal hydraulic efficiency.

·Chemistry Certification: 

Strict control over alloy elements is essential, particularly for Stainless and Alloy Steels, to guarantee the specified corrosion and temperature resistance in accordance with ASTM or API standards.

What Are the Key Application Fields of Custom Casting Pump Housings and Bodies?

Pump body housing plays an important role in various industrial fields and is widely used in the following fields:

·Municipal water supply and sewage treatment

Pump body housing for municipal water supply systems, sewage treatment plants, and wastewater pumping stations are commonly made of gray cast iron or ductile iron, produced by sand casting or shell molding. Stainless steel housing manufactured by lost-wax casting are used where corrosion resistance is critical. These housing provide durability, vibration damping, and continuous operation reliability.

·Mining and mineral processing

Pump body housing in slurry pump, dewatering pump, and abrasive fluid pump are made from ductile iron, alloy steel, or aluminum bronze. Ductile iron and alloy steel housing are produced by sand casting, shell molding, or lost foam casting. Aluminum bronze housing are manufactured using lost-wax casting or lost foam casting. These materials and processes ensure wear resistance, impact resistance, and structural stability under heavy loads.

·Chemical and pharmaceutical industry

Pump body housing handling corrosive or reactive fluids are made of stainless steel, aluminum bronze, or brass. Stainless steel housing are produced by lost-wax casting, aluminum bronze by lost-wax or lost foam casting, and brass by sand casting or lost-wax casting. These combinations provide corrosion resistance, chemical stability, and hygienic surfaces.

·Food and beverage industry

Pump body housing for transporting clean water, milk, juices, and other consumables are made from stainless steel and produced by lost-wax casting. This ensures corrosion resistance, surface finish, and compliance with food safety standards.

·Marine and seawater applications

Pump body housing in marine fire pump, desalination pump, and ballast pump are made from aluminum bronze or stainless steel. Aluminum bronze housing are produced by lost-wax casting or lost foam casting. Stainless steel housing use lost-wax casting. These housing resist seawater corrosion, cavitation, and mechanical stresses.

·Power generation

Pump body housing in cooling water systems, boiler feed pump, and condensate pump are made from gray cast iron, ductile iron, or alloy steel. Gray cast iron and ductile iron housing are produced by sand casting or shell molding. Alloy steel housing are produced by lost-wax or lost foam casting. These housing withstand high temperatures, abrasion, and continuous operation.

·Industrial and process

Pump body housing in chemical processing, oil and gas, and general industrial applications are made from carbon steel, alloy steel, stainless steel, or brass. Carbon steel and alloy steel housing are produced by lost-wax casting, lost foam casting, or sand casting. Stainless steel uses lost-wax casting, and brass uses sand casting or lost-wax casting. These housing provide mechanical strength, corrosion resistance, and fatigue resistance.

·Agricultural and irrigation systems

Pump body housing for irrigation, water transfer, and drainage systems are made from gray cast iron, ductile iron, or aluminum alloy. Gray cast iron and ductile iron housing are produced by sand casting or shell molding. Aluminum alloy housing are produced by permanent mold gravity casting. These housing offer durability, moderate corrosion resistance, and lightweight characteristics.

·Other industries

Pump body housing are also used in construction dewatering, firefighting systems, HVAC systems, and marine propulsion pump. Material and process selection ensures resistance to abrasion, corrosion, fatigue, and mechanical stress, depending on operating conditions.

What Are the Advantages of Simis OEM Custom Casting Pump Housings and Bodies?

Partnering with Simis guarantees engineered performance and certified reliability in demanding fluid handling applications:

·Pressure Integrity Guarantee: 

We leverage advanced simulation and casting techniques to achieve superior internal soundness, certified by mandatory NDT and Hydrostatic Testing to meet demanding pressure ratings.

·Material Versatility and Expertise: 

We provide optimized material selection across the full spectrum (Iron, Steel, Stainless, Alloy) to perfectly match the housing to the fluid's corrosivity, abrasiveness, and temperature requirements.

·Cavitation and Wear Mitigation: 

We focus on achieving smooth internal finishes (via Investment/Shell Mold Casting) and utilizing hard, abrasive-resistant alloy steels to maximize component life in erosive and corrosive conditions.

·Dimensional and Tolerance Control: 

We deliver precision-machined casings, ensuring critical shaft bores and mounting faces maintain the geometric tolerances necessary for long-term bearing and seal reliability.

How to Get a Quote for Custom Casting Pump Housings and Bodies?

China Simis Company is your expert partner for high-precision Pump Housings and Pump Bodies, offering a complete range of casting and CNC machining solutions. Whether you require a massive Ductile Iron casing or a complex Stainless Steel chemical pump housing, we deliver the quality and hydraulic efficiency your system demands, engineered for superior pressure integrity, chemical/abrasion resistance, and critical dimensional stability.

Please submit your 2D technical drawings, CAD models, and specific requirements for working pressure (psi/bar), fluid medium, temperature range, required NDT level, and target ASTM material grade to our engineering department for a consultation and detailed quotation.