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

Other Grey Cast Iron Accessories Foundry

Other gray cast iron accessories are widely used in many industrial applications due to their good mechanical properties and durability. Gray cast iron has good casting performance, shock absorption performance and wear resistance, and is suitable for manufacturing parts with complex shapes and occasions requiring high strength and high durability. Such accessories are often used in mechanical equipment, automobile manufacturing, construction engineering and pipeline connections. They can not only meet a variety of industrial needs, but also maintain stable performance in harsh working environments. Whether in high-load mechanical parts or in wear-resistant usage scenarios, gray cast iron accessories have demonstrated their reliability and long service life, becoming an indispensable material choice for various industries.

Other Grey Cast Iron 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 Other Grey Cast Iron Accessories Foundry and Other Grey Cast Iron 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
Other Grey Cast Iron Accessories Industry knowledge

Yancheng Longwan Machinery Co., Ltd. is a grey and ductile iron casting manufacturer based in Yancheng City, Jiangsu Province, China. We have produced Other Grey Cast Iron Accessories to customer drawing or sample at this site since 2006, alongside fire-fighting pipe fittings, reducer parts, automotive parts, agricultural machinery components and industrial robot parts for customers including SAIC Group, Deere, Bonfiglioli (China), Shanghai Beixu and Yaskawa Electric.

This category covers the accessory castings that sit outside our named families: brackets, covers, end caps, spacers, counterweights, bearing housings, adapter plates and wear-resistant components that carry load, close an assembly or damp vibration in service. Each item is configured to the mating component, the machine envelope and the acceptance criteria agreed before tooling starts.

At a glance
  • Grey iron accessories produced from customer drawings or physical samples
  • Three clay sand molding lines plus one coated sand line, 15,000 t annual casting capacity
  • Boxless shot-press molding at 120 and 100 boxes per hour; lost foam line in planning for 100 kg–1000 kg castings
  • In-house melting, shot blasting and turning on 3 CNC lathes and 3 lathes
  • IATF 16949:2016 system with full-process inspection and final acceptance before shipment

Where Grey Iron Accessories Fit

Grey cast iron is chosen when a part must absorb vibration, hold a machined interface or resist sliding wear without the cost of a steel or ductile iron alternative. The flake graphite structure also gives us the fluidity to cast ribs, bosses and cored passages close to finished shape, which keeps machining allowance under control.

  • Frames and supports — motor mounts, pedestals, base plates and frame ends that must stay dimensionally stable under cyclic load.
  • Enclosures and covers — gearbox covers, inspection covers, end caps and guards where flatness and sealing-face finish govern sealing performance.
  • Alignment and spacing parts — spacers, bushings, thrust washers and distance sleeves produced with controlled bores and face parallelism.
  • Mass and damping parts — counterweights and damper blocks, where graphite flakes convert vibration into heat.
  • Pipeline accessories — fittings, flange adaptors and strainer bodies matched to the fire-fighting pipe systems we already cast for.

Accessory Families We Produce in Grey Iron

Accessories are routed through the family whose geometry, tolerances and inspection routine best match the part. Where a casting is clearly a reducer, valve or robot component, we produce it through that dedicated line; everything else is handled here as a drawing-led accessory.

Product family Typical accessory castings Configuration focus
Grey Cast Iron Automotive Parts Brackets, mounts, housings, driveline supports Wall consistency, machined datum faces, batch traceability
Grey Cast Iron Reducer Accessories Gearbox covers, bearing caps, inspection covers Bore concentricity, flatness, vibration damping
Grey Cast Iron Valve Accessories Bodies, bonnets, handwheels, flange adaptors Pressure tightness, sealing-face finish, NDT where specified
Grey Cast Iron Water Pump Accessories Pump housings, bearing housings, covers Cored water passages, corrosion allowance, sealing faces
Grey Cast Iron Agricultural Machinery Parts Supports, pulleys, wear plates, gearbox parts Impact tolerance, wear resistance, field durability
Grey Cast Iron Industrial Robot Accessories Bases, arm segments, counterweights, mounting plates Stiffness, dimensional stability, machined mounting interfaces
Grey Cast Iron Semiconductor Accessories Frames, plates, damping blocks Damping characteristics, flatness, clean surface finish
Other Grey Cast Iron Accessories Non-catalogue brackets, spacers, caps, weights, adapter plates Drawing-led configuration, mixed batch sizes, as-cast or machined supply

Molding Routes, Capacity and Part Size

The production route follows part geometry, batch size and the machined envelope. Our two boxless shot-press lines carry the small and medium accessory range at high box rates, while the clay sand and coated sand lines handle recurring series work and cored parts.

Casting route Box / part envelope Rate Typical accessory work
Vertical sand-shot, horizontal parting, boxless line 610 × 510 × 240 mm 120 boxes/hour High-volume small accessories
Upper and lower sand-shot, horizontal parting, boxless line 750 × 650 × 250 mm 100 boxes/hour Small to medium accessories
Clay sand lines: 2 automatic, 1 semi-automatic Recurring production batches 15,000 t annual capacity overall Series accessory production
Coated sand line Cored, surface-critical castings Batch dependent Accessories with internal passages and skin finish requirements
Lost foam line (in planning) 100 kg – 1000 kg castings Project dependent Large accessory castings
  • Melting on three 1.25 T medium-frequency electric furnaces, with grade control per heat.
  • De-sanding and scale removal on three cleaning shot blasting machines.
  • Turning on 3 CNC lathes and 3 lathes for machined accessories.
  • Automatic spray painting and electrophoretic coating lines are part of our finishing expansion programme.

Specifications We Hold on Accessory Castings

Drawing dimensions and tolerances govern the part, and we confirm the following points before pattern making so that the casting and the machining sequence agree.

  • Material grade and the standard the test bar is evaluated against
  • Machining allowance per machined surface, and the datum faces the customer's fixture uses
  • Bore diameters, concentricity and face parallelism on rotating or locating parts
  • As-cast surface finish, parting line position and gate or riser removal areas
  • Brinell hardness range and tensile properties from the cast test bar
  • Pressure tightness, magnetic particle or ultrasonic inspection where the drawing requires it
  • Marking, traceability and any heat or batch identification

Quality Control and Acceptance

Our quality system follows IATF 949:2016 requirements, with inspection at each process stage and a final check of the completed casting against the agreed drawing and standard. Raw materials are randomly checked, in-process defects are controlled at the line, and finished accessories are fully inspected according to customer requirements.

  • 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 where specified
  • Molding sand control using SAC hammer-type sample making machine, SWY hydraulic strength testing machine, SSZ vibration sand screening machine and SGS double-disc infrared dryer

Inspection method, sampling level and report format are agreed at the quotation stage, and customers are welcome to inspect finished castings together with our inspectors before shipment.

Configuration Options We Confirm Before Tooling

  • Material: grey iron grade, or ductile iron where a part needs higher elongation or impact resistance.
  • Supply condition: as-cast, shot blasted, or machined on the faces the assembly requires.
  • Tooling: pattern and core box built from the customer's drawing or reverse-engineered from a sample.
  • Batch structure: prototype and sample quantities first, then series batches sized to your schedule.
  • Coating and protection: agreed surface protection for indoor, outdoor or humid service.
  • Packing: pallets, crates or returnable containers, with unit and batch marking.

Information We Use to Configure Your Solution

A complete drawing set lets us finalize molding route, tooling and price quickly. The following inputs are what we work from.

  • 2D drawings or 3D models, with tolerances, or a physical sample to reverse engineer
  • Material grade, hardness target and the acceptance standard
  • Which surfaces are machined, and which faces are used as datums
  • Annual quantity and the batch size you want per delivery
  • Inspection scope: dimensional report, material certificate, NDT or pressure test
  • Surface protection, marking and packaging requirements
  • Delivery destination and whether sea or air freight is preferred

Tooling, Samples and Production Sequence

  1. Drawings or samples are reviewed and the quotation is confirmed.
  2. Moulds and patterns are made after the tooling order is placed.
  3. Real samples are cast from the tooling and sent for your confirmation.
  4. Mass production starts after sample approval and order release.
  5. Inspection is completed by our inspectors, or jointly with your inspection team.
  6. Goods are packed and shipped after inspection results and shipment details are confirmed.

Accessories ship by sea from Ningbo and Shanghai, with air freight available when a project schedule is tight. Castings are packed with rust protection and clear batch marking, and documentation is issued with the shipment scope agreed at order stage.

Frequently Asked Questions

What counts as an “other” grey cast iron accessory?

Parts that fall outside our named automotive, agricultural, reducer, valve, water pump, semiconductor and robot families. Brackets, covers, end caps, spacers, counterweights, adapter plates, bearing housings and pipeline accessories are typical, supplied to a customer drawing or sample.

Do you supply standard or catalogue accessories?

No. We are a drawing-led foundry and machine shop, so accessories are developed and produced to the customer's drawing or sample rather than from a fixed catalogue.

What part sizes and volumes can you handle?

The vertical boxless line takes a 610 × 510 × 240 mm box at 120 boxes per hour, and the upper and lower sand-shot line a 750 × 650 × 250 mm box at 100 boxes per hour. Overall casting capacity is 15,000 t per year, and the planned lost foam line extends the range to 100 kg–1000 kg castings.

How is material quality verified?

Each heat is checked on a German SPECTRO direct-reading spectrometer, with tensile testing, 3T Brinell hardness, sonic velocity measurement and metallographic examination supporting the material certificate. Magnetic particle and ultrasonic inspection are applied when the drawing specifies them, and molding sand is controlled with a full set of sand testing equipment.

Can you machine the castings as well as cast them?

Yes. Three shot blasting machines handle cleaning and scale removal, and 3 CNC lathes and 3 lathes turn the machined faces of accessory castings. Automatic spray painting and electrophoretic coating lines are being added as part of our finishing expansion.

What do you need to prepare a quotation?

Drawings or a sample, material grade and acceptance standard, machined surface requirements, annual and per-batch quantities, coating, marking, packing and delivery details. We reply within 24 hours of a working day.

Alongside this category we cast the full Grey Cast Iron accessory family, Ductile Cast Iron components where higher strength and elongation are needed, and Ductile iron Pipe Fittings for water and fire-protection networks.