Sino Machine Industries

Industries We Serve

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3rd Inspection Service – Report

We offer the 3rd inspection service, the inspection reports including:

1) Mechanical Properties Report
    Heat Code, Heat Treatment Code, Tensile (MPa), Yield (MPa), Elongation, Reduction of area, Hardness (HB)
2) Chemical Composition Analysis Report
3) Visual Inspection Report
    Inspected Quantity, Surface Quality: As-cast surface finish, Machining surface finish
4) Hardness on Castings Inspection Report
5) Dimension Inspection Report
6) Non Destructive Testing (UT/RT/MT/PT/ET/AE, etc.) Report
   Ultrasonic Testing, Radio-graphic Testing, Magnetic particle Testing, Penetrant Testing, Eddy current Testing, Acoustic Emission, Leak Testing, Optical Holography, Infrared Thermography, Microwave Testing

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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.

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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Planetary Reducer

Planetary Reducer and Precision Gear Components — Custom Manufacturing to Customer Specification

SMI manufactures planetary reducers and precision gear components to customer drawing and technical specification — covering gear cutting, precision machining, heat treatment and assembly. Planetary reducer configurations cover a wide ratio range with multiple output shaft options, supplied to industrial equipment manufacturers and OEM customers in heavy machinery, mining, energy and marine sectors.

As with all SMI mechanical component supply, finished products are produced to the customer’s own engineering drawing or specification. SMI does not supply standard catalogue reducers — every configuration is engineered to the specific ratio, torque, shaft geometry and mounting requirements of the customer’s application.

SMI planetary reducer precision components- output flange, ring gear, planet carrier assembly and planet gear shaft, machined to customer specification
SMI planetary reducer component set – output flange, internal ring gear, planet carrier and planet gear shaft assembly, all precision machined to customer drawing and specification

Planetary Reducer — Configuration and Capability

A planetary gear system consists of a central sun gear, a set of planet gears rotating around it, a ring gear enclosing the assembly, and a planet carrier transmitting the output torque. The compact, coaxial layout of the planetary system delivers high torque density relative to its physical size — making it the preferred reducer configuration for space-constrained and high-torque applications across heavy industry.

Standard Configuration Range

Parameter Range Notes
Gear ratio 3:1 — 400:1 Single and multi-stage configurations
Output torque Up to 2,000 N.m Higher torque on request
Output shaft type Square, hexagonal, flange Custom shaft geometry available
Custom configurations All parameters To customer drawing and specification

Custom configurations outside the standard range — higher torque ratings, alternative shaft dimensions, modified mounting geometry or specific material grades — are available on request. SMI application engineers will confirm the appropriate configuration at the enquiry stage.

Components Manufactured

The image above shows four core planetary reducer components manufactured by SMI — illustrating the precision machining capability applied across the full component set:

  • Output flange / planet carrier flange — precision bolt circle and mating face, machined to assembly drawing tolerances
  • Ring gear — internal gear cutting to specified module, tooth profile and accuracy grade
  • Planet carrier assembly — bearing bore machining, planet pin holes and structural body
  • Planet gear shaft assembly — external gear cutting, shaft journals and spline features to drawing

Herringbone Gear Capability

In addition to planetary reducer components, SMI manufactures herringbone gears — a double helical gear configuration where two sets of oppositely angled helical teeth are combined side by side. The herringbone geometry cancels the axial thrust loads inherent in single helical gears, allowing high power transmission without the substantial thrust bearing requirements that helical gears impose. This characteristic makes herringbone gears particularly well suited to high-torque gearboxes in heavy machinery and marine propulsion applications.

Herringbone gears are more demanding to manufacture than equivalent spur or helical gears — requiring precise alignment of the opposing helical flanks at the centreline junction. SMI’s gear cutting capability covers this geometry, with finished gears supplied to the accuracy grade and material specification required by the customer’s application.

Applications

  • Mining and mineral processing equipment — conveyors, mills, hoists and crushing machinery
  • Heavy industrial machinery — presses, mixers, extruders and material handling equipment
  • Energy sector — wind turbine pitch and yaw drives, oil and gas pumping systems
  • Marine propulsion and auxiliary machinery — where herringbone gear capability is directly relevant
  • Construction equipment — tracked vehicles, cranes and lifting machinery
  • Agricultural and forestry machinery — high-torque drive systems

OEM and Custom Supply

SMI’s planetary reducer and gear component manufacturing service is available to equipment manufacturers requiring:

  • Component supply to drawing — individual gear components produced to the customer’s engineering drawing or CAD model
  • Complete reducer assembly — fully assembled and tested planetary reducer to customer specification
  • Gear cutting to specification — module, tooth profile, accuracy grade and material to customer requirement
  • Heat treatment — case hardening, through hardening or nitriding to specified surface hardness and case depth
  • Spare parts supply — replacement gear components alongside new equipment orders

بالعربية — مخفضات الكوكبية ومكونات التروس الدقيقة

تقوم SMI بتصنيع مخفضات السرعة الكوكبية ومكونات التروس الدقيقة وفقاً لرسومات العملاء والمواصفات التقنية. تغطي نسب التخفيض من 3:1 إلى 400:1، مع عزم دوران للإخراج يصل إلى 2000 نيوتن متر. تتوفر تكوينات مخصصة لتطبيقات الآلات الثقيلة والتعدين والطاقة. للاستفسار، تواصل مع فريق SMI →

En Español — Reductores Planetarios y Componentes de Engranajes de Precisión

SMI fabrica reductores planetarios y componentes de engranajes de precisión según los planos y especificaciones técnicas del cliente. Las relaciones de reducción cubren de 3:1 a 400:1, con par de salida de hasta 2.000 N.m. Se encuentran disponibles configuraciones personalizadas para aplicaciones en maquinaria pesada, minería y sector energético. Para consultas, contacte al equipo de SMI →

Auf Deutsch — Planetengetriebe und Präzisionszahnradkomponenten

SMI fertigt Planetengetriebe und Präzisionszahnradkomponenten nach Kundenzeichnung und technischer Spezifikation. Die Übersetzungsverhältnisse reichen von 3:1 bis 400:1, mit einem Ausgangsdrehmoment von bis zu 2.000 N.m. Kundenspezifische Konfigurationen für Schwermaschinenbau, Bergbau und Energiesektor sind verfügbar. Für Anfragen, kontaktieren Sie das SMI-Team →

Related Products — SMI Transmission & Drive Systems

Request a Consultation

To discuss planetary reducer or gear component requirements, please provide the following at enquiry stage:

  • Required gear ratio and number of stages
  • Input speed — RPM
  • Output torque requirement — N.m
  • Output shaft configuration — square, hex, flange or custom
  • Mounting geometry and envelope dimensions
  • Material and heat treatment specification if known
  • Annual volume — units per year
  • Drawing or specification if available

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

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Truck parts

A truck (or lorry) is a motor vehicle designed to transport cargo. Trucks vary greatly in size, power, and configuration; smaller varieties may be mechanically similar to some automobiles. Commercial trucks can be very large and powerful, and may be configured to mount specialized equipment, such as in the case of fire trucks and concrete mixers and suction excavators.

Modern trucks are largely powered by diesel engines, although small to medium size trucks with gasoline engines exist in the US. In the European Union, vehicles with a gross combination mass of up to 3.5t (7,700 lb) are known as light commercial vehicles, and those over as large goods vehicles.

Also we offer OEM/ODM truck parts. The truck parts including truck spare parts which Sino Machine Industry supplied were produced per customer’s drawings or specifications. All the parts are made in China. Chinese Castings Serving the Industrial Markets of the World.

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Train parts

A train is a form of rail transport consisting of a series of connected vehicles that usually runs along a rail track to transport cargo or passengers. Motive power is provided by a separate locomotive or individual motors in self-propelled multiple units. Although historically steam propulsion dominated, the most common modern forms are diesel and electric locomotives, the latter supplied by overhead wires or additional rails. Other energy sources include horses, engine or water-driven rope or wire winch, gravity, pneumatics, batteries, and gas turbines. Train tracks usually consist of two running rails, sometimes supplemented by additional rails such as electric conducting rails and rack rails, with a limited number of monorails and maglev guideways in the mix. The word ‘train’ comes from the Old French trahiner, from the Latin trahere ‘pull, draw’.

There are various types of trains that are designed for particular purposes. A train may consist of a combination of one or more locomotives and attached railroad cars, or a self-propelled multiple unit (or occasionally a single or articulated powered coach, called a railcar).

Featured train or railway parts:
Bronze clamp casting for railway, brake clamp, base plate, Locomotive Driven Gear, Axle box, etc.
Also we offer OEM/ODM train / railway parts. The train parts including train spare parts which Sino Machine Industriessupplied were produced per customer’s drawings or specifications. All the parts are made in China.

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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.

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.

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 →