OUR COMPANY · OVERSEAS B2B PROJECTS
Custom Casting and Machining from a Chinese Factory
Relia is a Chinese factory serving overseas B2B buyers with custom casting and machining enquiries. Start with the component your assembly needs, then connect its material, finished interfaces and acceptance requirements to a clear manufacturing and quotation scope.

RELIA · BUSINESS AND TECHNICAL SUPPORT
Start with the part you need to receive
Relia is the business brand of Qingdao Relia Industries Co., Ltd., based in Qingdao, Shandong, China. Relia’s catalogue includes stainless pump impellers and valve bodies, aluminium housings, mounting brackets, carbon-steel connectors and bronze sleeves. The manufacturing discussion begins with the component’s job in your assembly. That makes it easier for your engineers and buyers to connect material, finished geometry and acceptance to the same purchase.
| Your purchase | Typical product evidence |
|---|---|
| Fluid components | CF8/CF8M/CF3/CF3M impellers; 304 BSPT unions |
| Housings and brackets | ADC12/A380/A383 housings; 304/316 brackets |
| Wear and drive parts | Bronze sleeves, custom sliders and worm components |
| Casting workflow | Equipment, wax, investment powders and castable-resin enquiries |
MANUFACTURING
Connect cast geometry to finished interfaces
- Form the component
- Choose the casting route around material and geometry.
- Finish the interfaces
- Define bores, threads, faces and their required condition.
Relia’s component routes connect forming with finished interfaces. Investment casting uses a sacrificial pattern and ceramic mould to create stainless or other selected metal shapes; sand casting and pressure die casting provide different starting routes for appropriate parts. Cleaning exposes the blank for required treatment and machining. Relia’s CNC scope identifies the bores, threads, contact faces and mounting locations that must follow the finished drawing, then the finish plan preserves those features.

PROCUREMENT SUPPORT
Choose a route around the actual project
A new OEM design, an urgent replacement and an equipment purchase need different conversations. For a new component, share the model and finished drawing. For a replacement, include the sample and mating information. For equipment, identify the alloy, workpiece or flask and site utilities. The guides below help you prepare the right starting information.
Technical notes
The project type changes the review. A replacement needs recovered interfaces and a controlled drawing; a second source needs a comparison with the approved part; a new tool needs a sample-release basis. Relia’s guides connect those decisions to the relevant manufacturing and purchasing work.
QUALITY REQUIREMENTS
Review material and inspection together
- Actual material
- Identify the grade and condition for the specific part.
- Relevant inspection
- Select evidence for its dimensions and intended function.
Relia’s product information identifies concrete material and feature choices: CF8-series casting grades for impellers, ADC12/A380 options for aluminium parts and ZCuSn6Zn6Pb3 on an oil-lubricated sleeve reference. Material condition and selected tests are tied to the actual component. For example, a machined shaft bore, a body leakage check and a decorative finish answer different acceptance questions; the enquiry identifies which evidence your part needs.

WORKING TOGETHER
Keep responsibilities visible from the start
You bring the application requirements, design approvals and intended quantities. We review the proposed manufacturing route, finished features, tooling, finish and inspection scope with you. Open points become part of the technical discussion before the quotation is accepted. This keeps the agreed deliverable understandable to engineers, buyers and the receiving team.
| Your input | Our review | Agreed record |
|---|---|---|
| Drawing and material | Technical fit and open points | Part revision and supplied state |
| Required checks | Inspection and documentation scope | Acceptance basis |
| Delivery needs | Packing and supply requirements | Order responsibilities |
DELIVERY
Protect parts and retain their identity
- Protected features
- Identify bores, polished faces and heavy support points.
- Repeat identity
- Keep packaging, drawing revision and required records aligned.
Packing follows the component: protect a machined bore, avoid contact on a polished face and support a heavy casting at appropriate points. Our catalogue references include bags/cartons, wooden boxes and protected sculpture crates. The order identifies the needed packaging, part revision and documents so incoming inspection and repeat purchasing have the same reference.

COMPANY DETAILS
Connect the Business Identity to the Technical Scope
Relia’s company identity and contact routes stay consistent across the site. Product descriptions provide item-specific manufacturing and inspection references, while the agreed quotation defines the actual supplied work. Your enquiry can request the material, dimensional, treatment or other project records needed for approval. Factory-line ownership, certification scope or capacity statements are introduced only when their actual business details are established.
| Information | Useful review basis |
|---|---|
| Company | Qingdao Relia Industries Co., Ltd., Qingdao, China |
| Product scope | Related catalogue component and released drawing |
| Manufacturing | Selected forming, machining, treatment and finish |
| Approval | Required sample, inspection and order documents |
RELIA · YOUR NEXT PROJECT
Bring the project requirements into one enquiry
Share the part or product reference, your requirement and the quantities you are considering. A component drawing, equipment configuration brief or material-trial description gives us a concrete basis for review. We can then clarify the technical questions and the quotation scope with your team.
Start with these project details
- Part or product reference
- Drawing, configuration or trial brief
- Expected quantities
- Finished scope and acceptance needs
Shuyuan Road, Qingdao, Shandong, China