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Customised Castings & Precision Machining

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Pump parts

Industrial Pump Parts and Castings — Precision Components to Customer Specification

SMI manufactures industrial pump parts and castings to customer drawing and technical specification — covering pump housings, volute casings, impellers, end covers, bearing brackets and associated precision machined components. Production spans casting, precision machining and surface treatment, with finished components supplied to pump manufacturers and industrial equipment OEMs worldwide.

SMI’s capability in this area is defined by its casting and precision machining depth, not by a standard product catalogue. Every component is produced to the customer’s own engineering drawing or specification — including material grade, dimensional tolerances, surface finish and inspection requirements.

Complete industrial centrifugal pump assembly — cast housing, motor and base frame, supplied to customer drawing and specification
Precision machined pump end cover — stainless steel, multi-port flange face and bearing seat machined to customer dimensional specification
Pump volute casing interior — cast profile and precision machined bore and mating face, dimensional inspection report supplied as standard

Manufacturing Capability

Casting

Pump housings, volute casings and impeller bodies are among the more geometrically complex castings in industrial equipment manufacture — requiring accurate core setting, controlled solidification and consistent wall thickness to meet the hydraulic and pressure requirements of the finished pump. SMI’s casting capability covers grey iron, ductile iron, carbon steel, stainless steel and speciality alloys for corrosion-resistant applications.

Precision Machining

Cast pump components require precision machining of mating faces, bore dimensions, bearing seats and sealing surfaces to achieve correct assembly fit and hydraulic performance. SMI’s machining capability covers the full range of pump component features — flanged faces, impeller wear ring bores, shaft seal housings and bolt patterns — to the tolerances specified in the customer’s engineering drawing.

Corrosion-Resistant Materials

Pump applications in seawater service, offshore environments and chemical process industries impose material requirements beyond standard grey or ductile iron. SMI supplies pump components in duplex stainless steel, super duplex, Hastelloy-equivalent alloys and other corrosion-resistant specifications for customers operating in aggressive fluid environments. Material selection is confirmed at the enquiry stage based on the fluid handled, operating temperature and pressure, and customer material specification.

Component Types

Component Typical Materials Key Manufacturing Operations
Pump housing / volute casing Grey iron, ductile iron, carbon steel, stainless steel Casting, flange face machining, bore machining
Impeller Grey iron, stainless steel, duplex stainless Casting, balance machining, wear ring bore
End cover / bearing bracket Grey iron, ductile iron, carbon steel Casting, bearing seat machining, seal housing
Wear rings Bronze, stainless steel, hard iron Turning, grinding to close tolerance
Shaft sleeves Stainless steel, hard chrome Turning, grinding, surface treatment
Stuffing box / seal housing Grey iron, stainless steel Casting, precision bore machining

Application Areas

Industrial Process Pumps

Centrifugal pumps, multistage pumps, gear pumps and screw pumps used in general industrial process applications — chemical processing, power generation, oil and gas upstream and downstream, and heavy industrial cooling and fluid transfer systems. SMI supplies cast and machined components for both single-stage and multistage configurations to customer drawing.

Marine and Offshore Pumps

Seawater cooling pumps, fire pumps, ballast pumps and general service pumps for marine and offshore applications impose specific material and dimensional requirements driven by classification society rules and the corrosive nature of the service environment. SMI has experience supplying pump components in seawater-resistant alloys for marine customers, with material certification supplied as standard.

Oil and Gas Industry Pumps

Upstream and downstream oil and gas applications include high-pressure injection pumps, pipeline transfer pumps and produced water handling systems — all of which involve aggressive fluid environments and high reliability requirements. SMI’s corrosion-resistant material capability is directly relevant to this sector.

Special Fluid Applications

Chemical process pumps handling aggressive or reactive fluids require material selection beyond standard iron and carbon steel. SMI can manufacture pump components in stainless steel, duplex stainless and higher-alloy specifications for customers whose process fluids impose specific corrosion or contamination requirements.

OEM and Custom Supply

SMI’s pump component manufacturing service is available to pump manufacturers and industrial equipment OEMs requiring:

  • Casting to drawing — pump housings, impellers and other cast components produced to the customer’s pattern or 3D model
  • Machining to drawing — precision machining of cast components to the customer’s dimensional and tolerance specification
  • Complete component supply — cast and fully machined components ready for assembly, supplied with dimensional inspection report and material certification
  • Material substitution advice — where a customer is reviewing material specifications for corrosion resistance improvement, SMI application engineers can advise on alternative alloy options
  • Spare parts supply — ongoing supply of replacement components alongside new equipment orders

بالعربية — قطع غيار المضخات الصناعية والمسبوكات حسب المواصفات

تقوم SMI بتصنيع قطع غيار المضخات الصناعية والمسبوكات وفقاً لرسومات العملاء والمواصفات التقنية — تشمل أغلفة المضخات، والدوارات، والأغطية الأمامية، ومكونات الدقة المُشغَّلة. تغطي القدرة الإنتاجية المواد المقاومة للتآكل للتطبيقات البحرية ومعالجة السوائل الكيميائية. لمناقشة متطلبات قطع غيار المضخات الخاصة بك، تواصل مع فريق SMI →

En Español — Componentes y Fundiciones para Bombas Industriales

SMI fabrica componentes y fundiciones para bombas industriales según los planos y especificaciones técnicas del cliente — incluyendo carcasas de bombas, rodetes, tapas frontales y componentes mecanizados de precisión. La capacidad de producción cubre materiales resistentes a la corrosión para aplicaciones marinas y de fluidos químicos agresivos. Para consultas sobre componentes de bombas, contacte al equipo de SMI →

Em Português — Peças e Fundições para Bombas Industriais

A SMI fabrica peças e fundições para bombas industriais de acordo com os desenhos e especificações técnicas do cliente — incluindo carcaças de bombas, impulsores, tampas dianteiras e componentes usinados de precisão. A capacidade de produção abrange materiais resistentes à corrosão para aplicações marinhas e de fluidos químicos agressivos. Para consultas sobre componentes de bombas, entre em contato com a equipe SMI →

Related Products — SMI Precision Castings and Machined Components

Request a Consultation

To discuss pump component casting and machining requirements, please provide the following at enquiry stage:

  • Component type — housing, impeller, end cover, wear ring, other
  • Material specification — grade, standard and any special requirements
  • Key dimensions and weight — drawing preferred
  • Surface finish and inspection requirements
  • Annual volume — pieces per year
  • Application — fluid handled, operating pressure and temperature

SMI will respond with a written technical assessment and commercial proposal. Contact SMI — Pump Parts Enquiry →

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Hydraulic Parts

Hydraulic Parts and Castings — OEM Components to Customer Drawing and Specification

SMI manufactures hydraulic parts and castings to customer drawing and technical specification — covering hydraulic fittings, cylinder end components, mounting brackets, flanged connectors and associated precision machined components. Production spans casting, precision machining and surface treatment, with finished components supplied to hydraulic equipment manufacturers and industrial OEM customers worldwide.

Every component is produced to the customer’s own engineering drawing or specification — including material grade, dimensional tolerances, pressure rating, surface finish and inspection requirements. SMI does not supply standard catalogue hydraulic components — our capability is in manufacturing OEM parts to the exact requirements of each customer’s hydraulic system design.

Hydraulic tube fitting — cast steel, precision machined bore and port face to customer drawing specification
Hydraulic cap rod — square flange, four-bolt pattern and precision machined bore to customer drawing specification
Hydraulic clevis cap — cast steel, mounting flange and machined bore to customer cylinder specification
Hydraulic end cap lug casting — precision machined bore and seal face, cast steel to customer drawing specification

Components Manufactured

Hydraulic Fittings and Connectors

Cast and precision machined hydraulic fittings — including flanged tube connectors, port adaptors and inline fittings — manufactured to SAE, ISO or customer-specified port standards. Bore dimensions, thread forms and sealing face geometry machined to the tolerances required for reliable high-pressure sealing in service. Materials typically include ductile iron, carbon steel and stainless steel depending on pressure rating and fluid compatibility requirements.

Cylinder End Components

Hydraulic cylinder end caps, gland housings, clevis ends and trunnion mounts — cast and machined components for hydraulic cylinder assemblies used in industrial machinery, mobile equipment and offshore applications. Bore concentricity, seal groove geometry and thread dimensions are machined to the tolerances specified in the customer’s cylinder design drawing.

Mounting Brackets and Clevises

Cast steel mounting brackets, clevis forks and rod end attachments for hydraulic cylinder and actuator installations. Bore dimensions, pin hole alignment and mounting face geometry machined to assembly drawing requirements. Single-eye, double-eye and clevis fork configurations available to customer drawing.

Flanged Base Components

Square and round flanged base castings for hydraulic valve mounting, pump mounting and manifold attachment — machined bolt patterns, precision bores and flat mating faces to customer specification.

Hydraulic end cap double lug — cast steel, machined pin bores and port face to customer cylinder drawing
Hydraulic end cap two lug — cast steel, precision machined pin bore to customer specification
Hydraulic cylinder end cap double clevis eye — cast steel construction, pin bores machined to customer drawing
Hydraulic cylinder rod end components — multiple cast steel configurations, all machined to customer drawing specification
Hydraulic rod cap — square flange cast steel, precision machined bolt pattern and bore to customer drawing specification
Hydraulic rod clevis — cast steel fork end, pin bore and rod thread machined to customer cylinder drawing specification

Manufacturing Capability

Operation Capability
Casting Grey iron, ductile iron, carbon steel, stainless steel — to customer pattern or 3D model
Precision machining Bore machining, thread cutting, seal groove machining, flange face milling to drawing tolerance
Pressure rating Component geometry and material grade specified to customer pressure requirement
Surface treatment Zinc plating, phosphating, painting or other finishes to customer specification
Quality documentation Dimensional inspection report, material certification — standard with every order
Custom configurations All parameters to customer drawing — no standard catalogue constraints

Application Sectors

SMI hydraulic components are manufactured for use across a wide range of industrial and mobile hydraulic applications. Component supply is not limited to specific equipment brands — SMI manufactures to the customer’s drawing for use in whatever hydraulic system the customer designs or maintains.

  • Industrial machinery — hydraulic presses, injection moulding machines, metal forming equipment and factory automation systems
  • Mobile equipment — construction machinery, agricultural equipment, forestry machines and material handling vehicles
  • Mining and heavy industry — hydraulic roof supports, longwall equipment, crushing and screening machinery
  • Marine and offshore — deck machinery, steering systems, hatch cover actuators and subsea equipment
  • Energy sector — oil and gas production equipment, pipeline systems and power generation auxiliary systems
  • Aluminium and metals processing — dross press hydraulic systems, casting equipment and furnace handling machinery

OEM Supply

SMI’s hydraulic component manufacturing service is available to hydraulic equipment manufacturers and system integrators requiring:

  • Casting to drawing — hydraulic component castings produced to the customer’s pattern or 3D model
  • Machining to drawing — precision machining of cast components to the customer’s dimensional and tolerance specification
  • Complete component supply — cast and fully machined components ready for assembly, supplied with dimensional inspection report and material certification
  • Spare parts programmes — ongoing supply of replacement components alongside new equipment orders
  • Development support — SMI can review customer drawings and advise on casting and machining feasibility before order placement

بالعربية — قطع الهيدروليك والمسبوكات حسب رسومات العميل

تقوم SMI بتصنيع قطع الهيدروليك والمسبوكات وفقاً لرسومات العملاء والمواصفات التقنية — تشمل وصلات الهيدروليك، ومكونات نهايات الأسطوانات، وأقواس التركيب، والموصلات ذات الفلنجة، والمكونات المُشغَّلة بدقة. يُصنَّع كل مكون وفقاً لرسم العميل الخاص. للاستفسار، تواصل مع فريق SMI →

En Español — Componentes Hidráulicos y Fundiciones según Especificación del Cliente

SMI fabrica componentes hidráulicos y fundiciones según los planos y especificaciones técnicas del cliente — incluyendo racores hidráulicos, componentes de extremos de cilindros, soportes de montaje, conectores bridados y componentes mecanizados de precisión. Cada componente se fabrica según el plano propio del cliente. Para consultas, contacte al equipo de SMI →

Auf Deutsch — Hydraulikteile und Gussteile nach Kundenzeichnung

SMI fertigt Hydraulikteile und Gussteile nach Kundenzeichnung und technischer Spezifikation — einschließlich Hydraulikverschraubungen, Zylinderendkomponenten, Befestigungsbügeln, Flanschverbindern und präzisionsbearbeiteten Komponenten. Jedes Bauteil wird nach der eigenen Zeichnung des Kunden gefertigt. Für Anfragen, kontaktieren Sie das SMI-Team →

Related Products — SMI Precision Castings and Machined Components

Request a Consultation

To discuss hydraulic component casting and machining requirements, please provide the following at enquiry stage:

  • Component type — fitting, cylinder end, bracket, flange or other
  • Material specification — grade and any special requirements
  • Pressure rating — working pressure and test pressure
  • Key dimensions — drawing preferred, sketch with key dimensions acceptable
  • Surface finish and treatment requirements
  • Annual volume — pieces per year
  • Application sector — industrial, mobile, marine, mining or other

SMI will respond with a written technical assessment and commercial proposal. Contact SMI — Hydraulic Parts Enquiry →

By

Valve Parts

Valve Parts and Castings — Precision Components and Custom Assemblies to Customer Specification

SMI manufactures valve parts and castings to customer drawing and technical specification — covering valve bodies, bonnet castings, valve blocks, pipe fittings and associated precision machined components. The majority of supply is cast and machined components for integration into the customer’s own valve assemblies. A smaller volume of complete custom valve assemblies is also produced where customers require a fully assembled and tested unit to their specification.

Materials span grey iron, ductile iron, carbon steel, stainless steel and brass — selected to the fluid handled, pressure rating, temperature and corrosion requirements of each application. Every component is produced to the customer’s own engineering drawing or specification, with dimensional inspection report and material certification supplied as standard.

Aluminium flange cover — precision machined bolt circle and mating face, cast aluminium to customer specification
Changeover valve body — large format cast iron, dual flanged ports and precision machined faces to customer drawing and pressure specification
Duplex valve body — multi-port cast iron, precision machined bores and faces to customer drawing and pressure specification
Multihole hydraulic valve block — cast iron, precision machined multi-port configuration to customer drawing specification

Components and Assemblies Manufactured

Valve Body Castings

Cast valve bodies in grey iron, ductile iron, carbon steel and stainless steel — covering globe valves, gate valves, ball valves, butterfly valves and check valves in standard and custom configurations. Pressure-retaining wall thickness, bore dimensions, flange face machining and port geometry are produced to the customer’s engineering drawing and applicable pressure standard — ASME, EN, JIS or customer-specific.

Changeover and Directional Valve Bodies

Large-format changeover valve bodies and directional control valve castings — as shown in the gallery above — for industrial process and fluid power applications. Complex internal geometry, multiple port configurations and large flange faces require careful casting design and controlled machining to achieve the dimensional accuracy required for correct valve function. SMI’s casting and machining capability covers these more demanding geometries.

Duplex Valve Bodies

Duplex and multi-port valve body castings for applications requiring multiple flow paths in a single body — including duplex strainer bodies, duplex filter housings and multi-way valve bodies for marine, offshore and industrial process systems.

Hydraulic and Pneumatic Valve Blocks

Multi-port valve blocks and manifold bodies — cast and precision machined to the port layout, bore dimensions and pressure rating specified in the customer’s drawing. Both iron and brass valve blocks are shown in the gallery, covering industrial hydraulic and marine/fluid system applications respectively.

Pipe Elbows and Fittings

Cast pipe elbows, tees and reducers in grey iron, ductile iron and carbon steel — flanged or plain end configurations to customer drawing. Flange face machining and bore dimensions produced to ASME, EN or customer-specified standards.

Rotary Valve Casings

Large-format rotary valve body castings with dual flanged openings — for bulk material handling, industrial process and energy sector rotary valve applications. The complex geometry of rotary valve casings requires careful pattern design and controlled casting practice to achieve consistent wall thickness and accurate flange alignment.

Cast iron pipe elbow — flanged end, precision machined flange face and bore to customer drawing and applicable pressure standard
Rotary valve casing — large format cast iron, dual circular flanged openings, precision machined flange faces to customer specification
Brass multi-port valve block — complex internal geometry, machined ports and fittings, custom assembly to customer specification
Valve deck (valve cover) — brass construction, precision machined internal sealing features and mating face to customer specification

Materials

Material Typical Application Notes
Grey iron General industrial valves, low to medium pressure Cost-effective for non-corrosive service
Ductile iron Higher pressure industrial and water service valves Improved impact resistance over grey iron
Carbon steel High pressure industrial and energy sector valves ASTM A216 WCB and equivalent grades
Stainless steel Corrosive fluid service, food and pharmaceutical CF8M and equivalent grades available
Brass / bronze Marine, seawater and potable water service Corrosion resistance for wet and marine environments
Customer-specified Special fluid or pressure requirements Material certification supplied as standard

Application Sectors

  • Oil and gas — upstream wellhead and manifold valves, downstream refinery and pipeline valves
  • Marine and offshore — seawater service valves, ballast and bilge systems, deck fittings and fire suppression systems
  • Power generation — steam and feedwater valves, cooling water systems and turbine auxiliary valves
  • Chemical and petrochemical processing — corrosive fluid service, high temperature and high pressure applications
  • Industrial hydraulics and pneumatics — valve blocks, manifolds and directional control valve bodies
  • Water and fluid handling — industrial process water, irrigation and fluid transfer systems

OEM and Custom Supply

SMI’s valve component manufacturing service is available to valve manufacturers, system integrators and industrial equipment OEMs requiring:

  • Casting to drawing — valve bodies and components produced to the customer’s pattern or 3D model
  • Machining to drawing — precision machining of cast components to the customer’s dimensional and tolerance specification
  • Complete valve assembly — fully assembled custom valve units to customer specification, available for customers requiring a complete assembly rather than individual components
  • Pressure testing — hydrostatic and pneumatic pressure testing to customer-specified test pressure and procedure
  • Quality documentation — dimensional inspection report, material certification, pressure test certificate as required
  • Spare parts supply — ongoing replacement component supply alongside new equipment orders

بالعربية — قطع الصمامات والمسبوكات حسب مواصفات العميل

تقوم SMI بتصنيع قطع الصمامات والمسبوكات وفقاً لرسومات العملاء والمواصفات التقنية — تشمل أجسام الصمامات، وصمامات التحويل، وأجسام الصمامات المزدوجة، وكتل الصمامات الهيدروليكية، وأغلفة الصمامات الدوارة، والمكونات المُشغَّلة بدقة. المواد تشمل الحديد الزهر والفولاذ الكربوني والفولاذ المقاوم للصدأ والنحاس الأصفر. للاستفسار، تواصل مع فريق SMI →

En Español — Componentes de Válvulas y Fundiciones según Especificación del Cliente

SMI fabrica componentes de válvulas y fundiciones según los planos y especificaciones técnicas del cliente — incluyendo cuerpos de válvulas, válvulas de cambio, cuerpos de válvulas dúplex, bloques de válvulas hidráulicas, carcasas de válvulas rotativas y componentes mecanizados de precisión. Los materiales incluyen hierro fundido, acero al carbono, acero inoxidable y latón. Para consultas, contacte al equipo de SMI →

Auf Deutsch — Ventilteile und Gussteile nach Kundenspezifikation

SMI fertigt Ventilteile und Gussteile nach Kundenzeichnung und technischer Spezifikation — einschließlich Ventilgehäuse, Umschaltventile, Doppelventilgehäuse, Hydraulikventilblöcke, Drehventilgehäuse und präzisionsbearbeitete Komponenten. Werkstoffe umfassen Grauguss, Kohlenstoffstahl, Edelstahl und Messing. Für Anfragen, kontaktieren Sie das SMI-Team →

Related Products — SMI Precision Castings and Machined Components

Request a Consultation

To discuss valve component casting and machining requirements, please provide the following at enquiry stage:

  • Component type — valve body, bonnet, valve block, pipe fitting or complete assembly
  • Material specification — grade and applicable standard
  • Pressure rating — design pressure, test pressure and applicable pressure standard
  • Key dimensions and weight — drawing preferred
  • Fluid handled — relevant to material selection and sealing requirements
  • Surface finish and treatment requirements
  • Annual volume — pieces per year
  • Quality documentation requirements — material cert, dimensional report, pressure test certificate

SMI will respond with a written technical assessment and commercial proposal. Contact SMI — Valve Parts Enquiry →