Custom Mud Pump & Frac Valve Parts Manufacturer

Frequently Asked Questions About Custom Mud Pump, Plunger and Frac Valve Parts

1. What mud pump, plunger pump and frac valve components does SIMIS manufacture?

SIMIS manufactures OEM metal parts for reciprocating mud pumps, plunger pumps, hydraulic fracturing pumps and related valves. Examples include forged fluid-end blocks, connecting rods, crosshead parts, plunger rods, steel valve stems, valve seats and cages, cast power-end housings, pump frames and selected fittings. We provide castings, forgings and finished parts to customer drawings rather than standard complete pressure-rated pump or valve assemblies.

2. Can SIMIS produce forged steel frac pump fluid-end and valve components?

Yes. Open-die forging is suitable for certain substantial alloy steel fluid-end blocks and other large pressure-boundary blanks. Closed-die forging can be used for compatible smaller valve stems, connecting rods, yokes and flanges. Common customer-specified forging materials may include AISI 4130, 4140, 4145 or 4340, depending on the component. The actual service rating and acceptance requirements must be established by the OEM; the forging process alone does not certify pressure performance.

3. Which pump and valve parts are suitable for metal casting?

Sand casting and shell mold casting can be used for approved cast steel pump housings, power-end frames, covers and shaped fittings. Ductile iron may be suitable for specified non-pressure-containing supports and structural bodies. Investment casting is an option for compatible smaller stainless steel valve cages, guides and fittings. High-pressure fracturing fluid ends are not assumed to be ductile iron castings; their material and production route require specific customer approval.

4. What grades of steel and iron can be supplied?

Materials may include wrought AISI 1045 for appropriate non-pressure mechanical parts; wrought AISI 4130, 4140, 4145 and 4340 alloy steels for specified forgings; cast carbon steel such as ASTM A216 WCB for applicable cast pressure components; and ASTM A536 ductile iron for approved pump frames. Corrosion-resistant components may use wrought 316L or 17-4 PH stainless steel, or appropriate cast stainless steel such as ASTM A351 CF8M. Wrought and casting grades are not interchangeable without approval.

5. What details are required for an OEM pump or frac valve parts quotation?

Please send 2D drawings or available 3D CAD files, component names, material specifications, key dimensions and estimated quantities. For any pressure-containing part, identify the required pressure class or design specification, operating media and relevant temperature conditions. Also indicate whether raw forgings, castings or finished metal components are required. SIMIS can prepare a quotation for the agreed part scope. Contact info@simis-group.com.

OEM Mud Pump, Plunger Pump and Frac Valve Parts Manufacturer

Custom mud pump and frac valve parts include the metal components that support reciprocating pumping, slurry handling and control of high-pressure oilfield fluids. Mud pumps circulate drilling fluids; fracturing pumps deliver pressurized treatment fluids; and fracturing valves provide flow-control functions within separately specified equipment. These are different machines, although some of their parts share related forging and casting requirements.

SIMIS specializes in OEM forged alloy steel fluid-end blanks, pump connecting rods, plunger-related steel parts, cast pump housings, stainless steel valve internals and custom frac valve components. Manufacturing is based on customer-provided drawings, material grades and purchase requirements.

Typical reciprocating pump structures are divided into the fluid end, which contains or contacts the pumped medium, and the power end, which drives the plungers or pistons. A fluid-end module may contain intersecting flow passages and valve cavities. Power-end parts include mechanical links, crossheads, frames and related drive components. The appropriate material and manufacturing process depend on each part’s function.

Large alloy steel fluid-end blanks and similar heavy components can be made from open-die forgings. Shaped rods, stems and suitable yokes may be produced through closed-die forging. Sand casting is relevant to selected pump structures and larger housings, while investment casting can serve smaller detailed valve components. See our related custom pump housing and OEM valve components pages.

SIMIS supplies the ordered metal parts, not an automatically pressure-certified complete pump or well-control system. Component suitability for abrasive fluids, cyclic pressure and corrosive environments follows the approved OEM specification.

Types of Mud Pump Fluid-End, Power-End and Frac Valve Components

Custom pump parts should be classified by their function rather than described as one universal high-pressure casting. The table below distinguishes typical forged and cast products and the manufacturing route that may fit each component.

Fluid-End Forgings and Plunger Components

The fluid end of a reciprocating pump handles the working fluid. Alloy steel blocks and other pressure-containing components can be manufactured as forgings with passages and connection interfaces completed under the OEM drawing. A metallic plunger or plunger rod is a separate part; it should not automatically be equated with a ceramic plunger or an entire pump assembly.

Power-End Links, Crossheads and Cast Housings

The power end transfers motion to the pumping elements. Suitable forged connecting rods, crosshead components and other links differ from cast housings and supporting frames. SIMIS manufactures these separate parts according to their required metal grades, connection geometry and finished supply condition.

Open-Die Forging, Closed-Die Forging and Casting Processes for Pump Parts

Forging and casting are both important to custom pump and valve metal parts, but they serve different geometries and materials. Forging creates a wrought-metal blank; casting solidifies molten metal into a mold. Neither process alone establishes the final pressure rating, sealing performance or suitability for sour service.

Open-Die Forging for Heavy Alloy Steel Fluid-End Blocks

Open-die forging is a principal process for compatible large pump forgings. Heated metal is shaped between relatively simple dies to produce blocks, cylinders and other substantial blanks. For oilfield pumps, an appropriate alloy steel forging may be selected where the OEM specifies a pressure-containing fluid-end component. SIMIS provides open-die forging and alloy steel forging services for suitable custom components.

Closed-Die Forging for Rods, Valve Stems and Yokes

Closed-die forging is suitable for certain repeated-production shapes with integral arms, stems or mounting features. Possible products include connecting rod forgings, valve stems, flanges and crosshead-related parts. The steel grade and geometry follow the customer drawing; no universal strength or fatigue-life claim applies to all forgings. Explore SIMIS closed-die forging manufacturing.

Sand and Shell Mold Casting for Pump Structures

Sand casting can produce pump bases, power-end housings and other large structures with ribs and mounting features. Steel casting is also an option for certain specifically approved pressure-boundary shapes, but a casting label alone does not prove a frac-valve pressure rating. Ductile iron is principally discussed here for non-pressure-supporting parts. SIMIS offers sand casting, cast steel manufacturing and ductile iron castings.

Investment Casting for Smaller Valve Internals

Investment casting can produce suitable small valve cages, guides and fittings in approved cast stainless steel or other steel casting grades. Shell mold casting may be used for compatible larger or repeat-production shapes. SIMIS provides investment casting and shell mold casting. Pressure-containing internals still require the purchased material and acceptance specifications to be explicitly defined.

Alloy Steel, Cast Steel, Stainless Steel and Ductile Iron Materials

Metal grades for mud pump and fracturing valve components vary with their function. A pressure-containing forged fluid-end block does not have the same material requirements as a cast power-end housing or replaceable valve guide. The following are representative grades for quotation discussions, subject to customer approval.

Forged Cr-Mo Alloy Steels for Fluid Ends and Power-End Parts

AISI 4130, 4140 and 4145 are distinct chromium-molybdenum steel grades. They may be considered for appropriate large forgings, pump mechanical components and pressure-containing blanks under the customer’s chosen design basis. AISI 4340 offers a different alloy family for selected heavy forgings. The required mechanical properties, product form and material conditions must be specified for each order.

Cast Steel Is Not the Same as Wrought Steel

ASTM A216 WCB and ASTM A217 WC6 identify specific cast steel grades. They should not be described as interchangeable with wrought 4140 bar or forging. Likewise, ASTM A351 CF8M is a cast stainless grade, not simply another name for wrought 316 or 316L. Casting standards, corrosion limits and any pressure-boundary acceptance conditions must be reviewed for the actual part.

Ductile Iron for Non-Pressure Structural Components

ASTM A536 ductile iron is suitable for selected cast pump bases, frames and structural housings when its grade meets the OEM drawing. This material is not presented as a default choice for very high-pressure fracturing fluid-end blocks or valves. Corrosion-resistant metal selection also depends on the fluid chemistry; stainless steel grade alone does not certify compatibility with sour gas or every chloride environment.

Applications in Oilfield Drilling, Hydraulic Fracturing and Industrial Pumping

Oil and Gas Drilling Mud Pumps

Drilling mud pumps circulate drilling fluid through equipment under conditions defined by the rig and pumping system. SIMIS manufactures suitable forged alloy steel rod and fluid-end parts, along with customer-approved cast pump structures and valve internals. Abrasive mud service and the required pressure boundary are specified for each component.

Hydraulic Fracturing and Cementing Pumps

Fracturing and oilwell cementing equipment may use reciprocating plunger pumps, high-pressure valves, fluid-end blocks, plunger components and related connections. Forged alloy steel blanks are important for suitable large pressure-containing parts. The OEM determines the required pressure class, operating cycle, temperature and component acceptance criteria.

Mining Slurry and Mineral Processing Pumps

Mining and mineral processing plants handle slurry and abrasive liquids with different pump constructions. SIMIS supplies custom steel forgings, pump support castings and compatible valve components. Not every slurry pump is a reciprocating plunger pump; the equipment drawing determines which metal part is needed. Related applications are covered by SIMIS mining machinery component manufacturing.

Petrochemical, Chemical and Offshore Equipment

Chemical processing and offshore systems can require corrosion-resistant pump or valve components. Wrought stainless and cast stainless grades may be considered under the actual fluid chemistry and equipment specification. Seawater, acid service and hydrogen-sulfide-containing fluids impose different requirements; no single stainless alloy is suitable for every environment.

Industrial Hydraulic and Power Equipment

Some industrial pumping and fluid-handling systems use related forged rods, valve elements, cast housings and supporting structures. SIMIS supplies such parts to drawings for agreed applications. Browse the broader energy and power OEM parts range.

Custom Pump and Frac Valve Forgings and Castings Made to OEM Drawings

SIMIS manufactures OEM metal parts for mud pumps, plunger pumps and fracturing valves using appropriate forging and casting routes. The project may call for a substantial forged fluid-end blank, a die-forged mechanical link, a cast steel body, a ductile iron supporting frame or a small investment-cast stainless fitting. The process is matched to the material and purchased component.

Customers may request rough forgings, raw castings or finished metal parts. Where specified, SIMIS can include machining of sealing or mounting interfaces, heat treatment, surface protection and inspection under the purchase documents. These activities are not presented as one mandatory operation list for every component.

For pressure-containing parts, the applicable API or other industry standard, material traceability, testing requirements and rated operating conditions must be explicitly included in the customer order and confirmed within the manufacturing scope. No universal 2.5-times pressure test, API certification, fixed surface hardness or guaranteed service life is claimed for every SIMIS pump or frac-valve component.

The original page includes photographs of finished metal assemblies and forging operations. These are examples of metal parts and production activity, not evidence that every component shown is a certified complete high-pressure pump or valve system.

Request a Quote for Custom Mud Pump, Plunger and Frac Valve Parts

SIMIS welcomes OEM inquiries for forged fluid-end blocks, steel plunger-related components, connecting rods, valve stems, cast pump housings and specialized valve internals. Please provide the following five items where available:

• Drawings: 2D manufacturing drawings or available 3D CAD models of the required metal part.

• Component and supply scope: Fluid-end block, plunger rod, valve component, connecting rod or pump housing; raw blank or finished component.

• Material grade: Customer-specified forged alloy steel, cast steel, stainless steel or ductile iron material standard.

• Critical product specifications: Overall and connection dimensions, fluid passages and pressure class or service conditions where relevant.

• Order requirements: Estimated quantity, intended pump or valve application and any required component-level acceptance documents.

Any additional surface, heat-treatment, machining or inspection requirements can be supplied in the approved technical documents. SIMIS will quote the agreed material, manufacturing route and delivery scope.

Send your drawings and OEM inquiry: info@simis-group.com