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Yancheng Longwan Machinery Co., Ltd. HOME / PRODUCTS & APPLICATION / Grey Cast Iron / Grey Cast Iron Water Pump Accessories

Grey Cast Iron Water Pump Accessories Foundry

Gray cast iron water pump accessories are usually made of durable gray cast iron material with good corrosion resistance and high strength. These accessories include motor frames, motor covers, etc. They play a key role in the water pump system to ensure that the motor and its internal components are effectively protected and supported. The choice of gray cast iron can not only withstand high pressure and frequent use, but also maintain stability and reliability under various environmental conditions.

Grey Cast Iron Water Pump Accessories OEM/ODM
ABOUT US
Yancheng Longwan Machinery Co., Ltd.
Yancheng Longwan Machinery Co., Ltd.
Founded in 2006, which located next to National Highway 204 in Yancheng City, Jiangsu Province, 40km from the center of Yancheng City, 5km from the center of Dongtai City, 30km from Dafeng District, and 10km from the exit of Baiju Expressway, with convenient transportation. We mainly produce various types of fire-fighting pipe fittings, reducer parts, auto parts, agricultural machinery, and industrial robot parts. Its main customers include SAIC Group, Deere, Bonfiglioli (China), Shanghai Beixu, Yaskawa Electric, etc. As a famous China Grey Cast Iron Water Pump Accessories Foundry and Grey Cast Iron Water Pump Accessories Suppliers, our company has a variety of molding equipment, including one vertical sand-shot horizontal parting boxless shot-press molding line with specifications of 610*510*240, 120 boxes/hour, suitable for mass production of small parts; one upper and lower sand-shot horizontal parting boxless shot-press molding line with specifications of 750*650*250, 100 boxes/hour, suitable for mass production of small and medium-sized parts; 3 sets of 1.25T medium-frequency electric furnaces; 3 cleaning shot blasting machines, and now planning a lost foam production line, suitable for 100Kg~1000Kg casting production, and planning an automatic spray painting line and an electrophoretic coating line at the same time, 3 CNC lathes and 3 lathes.
Yancheng Longwan Machinery Co., Ltd.

ODM Customization Expert

Advanced Production & Processing Equipment

Longwan Machinery has a variety of advanced domestic and foreign molding equipment, including 2 fully automatic production lines for clay sand, 1 semi-automatic production line for clay sand, and 1 coated sand production line, with an annual production capacity of 15,000 tons.

Yancheng Longwan Machinery Co., Ltd.

Complete Inspection Flow

Strict Quality Inspection

We have full-process testing equipment: spectrum analyzer, metallographic microscope, universal tensile testing machine, magnetic particle flaw detector, ultrasonic flaw detector, etc.
The above equipment can fully ensure that we can provide customers with high-precision final castings, and at the same time ensure that we meet customers' comprehensive testing requirements for physical and chemical properties of materials, non-destructive testing, high-precision geometric dimension testing, etc.

Professional Casting Expert

Comprehensive Casting Manufacturer

FAQ
  • Q
    Where are your products mainly exported to?
    A

    Our products are mainly exported to multiple countries such as Germany, Japan, Italy, South Korea, and Australia.
  • Q
    How to deliver the goods to us?
    A

    Usually, we ship by sea, which is very convenient for export.

    Of course, if the customer's goods are urgent, we can also air freight them. Ningbo Airport and Shanghai International Airport are both very close to us.
  • Q
    What's the payment term?
    A

    When quoting, we will confirm the transaction method with you.

    For mass production, we usually make a 50% advance payment in advance and then inspect and confirm the shipment before paying the remaining balance.
  • Q
    How to guarantee the quality of your goods?
    A

    Firstly, there will be corresponding inspections after each process, and for the final completed product, we will conduct a full inspection according to customer requirements and international standards;

    Then, we have advanced and complete top testing equipment in the industry: spectral analyzers, metallographic microscopes, universal tensile testing machines, magnetic particle testing machines, ultrasonic testing machines, etc.

    The above equipment can fully ensure the provision of high-precision final castings to customers, while also meeting the comprehensive testing requirements of customers for material physical and chemical properties, non-destructive testing, high-precision geometric dimension testing, and so on.
  • Q
    How many employees of your company? what about the technicists?
    A

    Our company has more than 120 employees, including 10 professional technicians and 5 engineers.
  • Q
    How about the capacity of your company?
    A

    We have 2 fully automatic clay sand production lines, 1 semi-automatic clay sand production line, and 1 coated sand production line, with an annual production capacity of 15000 tons.
  • Q
    Do you have some standard parts?
    A

    No, currently we produce and customize according to the requirements based on the drawings provided by the customer.
  • Q
    Can you do customized products?
    A

    Yes, we are mainly doing customized products according to the customers’ drawings or samples.
  • Q
    What applications do your products relate to?
    A

    Our products cover almost all the applicable equipment manufacturing and machinery manufacturing and processing fields, mainly including automotive trucks, engineering machinery, agricultural machinery, reducers, water pumps, water treatment systems, and other fields.
  • Q
    what products can you offer?
    A

    We mainly produce cast iron parts made of gray cast iron and ductile iron materials.
  • Q
    Are you a direct manufacturer or trading company?
    A

    We are a foundry and a manufacturer of cast iron parts.
  • Q
    How long can I get the feedbacks after we sent the inquiry?
    A

    We will reply to you within 24 hours of the working day.
NEWS
Grey Cast Iron Water Pump Accessories Industry knowledge

Grey Cast Iron Water Pump Accessories Cast and Machined to Drawing

Yancheng Longwan Machinery Co., Ltd. has been casting iron components in Yancheng City, Jiangsu, China since 2006, on a site beside National Highway 204 with good access to the Baiju Expressway. Our programme as a Grey Cast Iron Water Pump Accessories manufacturer covers motor frames, motor covers, pump bodies, housings, volutes and impellers for pump builders, motor plants and OEM assembly lines.

These castings serve agricultural irrigation sets, municipal water transfer, building services, fire-fighting pump packages and industrial process water systems. We work from released drawings or physical samples, so bore sizes, bolt patterns, flange drilling and mounting faces follow the mating motor and pipework rather than a fixed catalogue.

Our Water Pump Accessory Range and Where Each Part Fits

Each accessory has a defined mechanical job in the pump set. We confirm the interfaces that carry load, locate the rotor and seal the pressure boundary before pattern making starts.

Component Function in the pump set Confirmed before casting
Motor frame / motor housing Carries the stator, rotor and bearing assembly; transfers torque reaction into the base Wall section, rib layout, foot or flange mounting, bore and register sizes
Motor cover / end cover Closes the housing, locates the bearing seat, shields windings from moisture and dust Register diameter, bolt circle, bearing seat tolerance, core design
Pump body / casing Forms the pressure boundary and guides flow into the volute Port centres, flange drilling, section thickness, pressure test requirement
Volute / casing bore Converts velocity head into pressure and sets part of the pump characteristic Passage smoothness, core assembly, wear allowance, machining datum
Impeller (closed or open) Imparts energy to the water and defines the head and flow relationship Vane geometry, bore and keyway, balance allowance, trimming diameter
Pump housing / connecting bracket Joins pump to motor and keeps the shaft aligned under running load Spigot fit, shaft alignment bore, bolt pattern, concentricity

Grey Iron or Ductile Iron for a Water Pump Component

Flake graphite gives grey iron its damping, thermal conductivity and dimensional stability, which suits motor frames, covers and housings. Where a duty brings pressure surges, shock or higher tensile demand, the same geometry is quoted in our Ductile Cast Iron Water Pump Accessories range instead.

Property Grey cast iron Ductile cast iron
Graphite form Flake Nodular / spheroidal
Vibration damping High — useful on motor frames and housings Lower
Thermal conductivity High, assists bearing and winding heat paths Lower than grey iron
Mechanical behaviour Specified by cast-bar tensile class and hardness; essentially no elongation Higher tensile strength with measurable elongation
Typical water pump use Motor frames, covers, housings, bodies, volutes Pressure-loaded or impact-loaded parts

Both materials are melted in-house on three 1.25 T medium-frequency electric furnaces, so grade control stays inside our own process rather than depending on bought-in castings.

Moulding Capacity Behind the Water Pump Range

Two boxless shot-press moulding lines carry the water pump accessory work, with the smaller mould size reserved for high-volume covers and small housings and the larger size for frames and casings.

Production asset Size / rating Best fit
Vertical sand-shot, horizontal parting boxless shot-press line 610 × 510 × 240 mm, 120 boxes/hour Series production of small parts
Upper and lower sand-shot, horizontal parting boxless shot-press line 750 × 650 × 250 mm, 100 boxes/hour Series production of small and medium parts
Clay sand and coated sand lines 2 fully automatic clay sand, 1 semi-automatic clay sand, 1 coated sand Repeat moulds and cored internal passages
Cleaning and machining 3 shot blasting machines, 3 CNC lathes, 3 lathes Surface preparation and finish turning
Annual capacity 15,000 tons Scheduled OEM programmes

A lost foam line for 100 kg to 1000 kg castings is in development, together with an automatic spray painting line and an electrophoretic coating line for customers who require a coated finish rather than bare shot-blasted castings.

Machining, Fit-Up and Critical Dimensions

Water pump accessories are judged on the surfaces that mate with other components, not only on the as-cast outline. We agree the machining datum on the drawing and then work the features that control assembly and running clearance.

  • Bearing seat and register diameters turned to the stated tolerance and roundness
  • Mounting faces and feet machined for flatness and for correct angular relationship to the bore
  • Bolt circles, flange drillings and spigot fits positioned from the same datum as the mating part
  • Impeller bores, keyways and trimming diameters prepared for balancing where required
  • Wall sections checked so the pressure boundary is not thinned by core shift

Quality Control and Acceptance Evidence

Our foundry operates to a complete IATF 16949:2016 system standard. Inspection runs after each process step, and finished water pump accessories are fully inspected against the customer requirement and international standards before shipment.

  • German SPECTRO direct-reading spectrometer for chemical composition
  • Tensile testing machine and 3T Brinell hardness tester for mechanical properties
  • Sonic velocity meter and metallographic microscope for structure and graphite form
  • Magnetic particle and ultrasonic flaw detection for internal and surface soundness
  • Moulding sand testing with SAC hammer-type sample maker, SWY hydraulic strength tester, SSZ vibration sand screener and SGS double-disc infrared dryer
  • Dimensional inspection of machined features prior to packing

Acceptance documents, inspection records and sample retention are agreed with the project before the first production run, so the release criteria are fixed while patterns are still being made.

ODM / OEM Workflow from Drawing to Shipment

  1. Drawing or sample review, casting feasibility check and confirmation of the quoted configuration
  2. Pattern and core box manufacture after the mould order is placed
  3. Sample castings produced and submitted for dimensional and visual approval
  4. Mass production on the agreed moulding line and grade
  5. Inspection by our inspectors, or jointly with the customer's representative
  6. Export packing and shipment on release

Because there is no standard catalogue for this range, every accessory is produced from a released drawing or approved sample. Pattern ownership, revision control and packaging design are handled as part of the same project route.

Information We Use to Configure Your Solution

A workable quotation for water pump accessories needs the following inputs. Missing items are clarified with the customer's engineering contact before patterns are cut.

  • 2D drawing or 3D model, or a sample casting for reverse engineering
  • Material: grey cast iron or ductile iron, with tensile class and hardness requirement
  • Machining scope: as-cast, partly machined or fully machined, with datum and critical dimensions marked
  • Surface treatment: shot blast only, primer, paint colour or electrophoretic coating
  • Annual volume, batch size and release schedule
  • Inspection and documentation requirements, including NDT and pressure testing
  • Packing method, marking and destination port

Our engineers also work from the wider Ductile Cast Iron and grey iron families when a pump programme needs a mix of materials across one assembly, and the parent Grey Cast Iron range shows the automotive, agricultural, reducer, valve, semiconductor and robot components cast on the same lines.

Maintenance, Spares and Delivery Scope

Water pump accessories wear at the sealing faces, bearing seats and impeller running clearances. Because we retain the pattern and process records, replacement batches can be cast and machined to the original drawing revision instead of being re-engineered from a worn part.

Parts are packed for export by geometry and weight, with protection on machined faces and bores. Sea freight is our usual route, and urgent consignments can move by air through Ningbo or Shanghai. We confirm the delivery scope, marking and documentation in the quotation so the receiving plant can book the shipment without further clarification.

Frequently Asked Questions

Which water pump components do you cast in grey iron?

We cast motor frames, motor covers, pump bodies, housings, volutes and impellers for pump and motor assemblies. Each part is produced against a customer drawing or an approved sample, and the mating dimensions are taken from the assembly rather than from a stock size.

Can the castings be supplied fully machined?

Yes. We hold three CNC lathes and three lathes and can turn bearing seats, registers, bores, faces and flange features. Drawings that mark the machining datum and the critical fits allow us to quote the correct machining allowance at the pattern stage.

What material testing is performed on a water pump accessory?

Chemistry is checked on the German SPECTRO direct-reading spectrometer, mechanical properties on the tensile testing machine and 3T Brinell hardness tester, and structure on the sonic velocity meter and metallographic microscope. Magnetic particle and ultrasonic flaw detection are applied where the drawing or application calls for non-destructive testing.

How is quality controlled between casting and shipment?

Inspection is carried out after each process step, from sand testing and melting through moulding, cleaning and machining. Finished castings receive a full inspection against the agreed requirement and international standards before the shipment is released.

Do you produce standard water pump accessories from stock?

We manufacture to order from customer drawings or samples, and ODM and OEM work is our normal route. Colour, marking and packaging design can be customised within the same project, which keeps a private-label pump programme consistent across batches.

What information is needed to quote a water pump accessory programme?

Send the drawing or sample, the chosen material and grade, the machining and coating scope, the annual volume with batch sizes, the inspection and documentation requirements, and the packing and destination details. Our engineering team reviews the inputs and confirms the casting route, pattern requirement and quotation on that basis.