01FIND YOUR BUYING ROUTE
OEM Casting Sourcing Guides
Choose the purchase structure that fits your order: a finished component, a casting blank, machining for existing parts or a coordinated package. Relia’s sourcing guides help you compare tooling, recurring work and delivered condition, then plan samples and plant-specific releases. Start with the guide matching the work you are buying now.
- Choose
- Your purchasing task
- Compare
- Relevant component evidence
- Continue
- Guide, product or RFQ

02FIND YOUR BUYING ROUTE
Seven Purchasing Decisions with Separate Guides
Relia combines our own sand casting and machining production in China. The guides below connect your purchasing situation to a component specification, a process decision and the evidence needed for acceptance.
Choose the guide matching the work you are buying now. A raw blank, machining-only order and finished component leave different operations and responsibilities downstream.
03FIND YOUR BUYING ROUTE
The Supplied State Changes the Comparison
Our catalogue includes irregular grey- or ductile-iron hardware blanks developed from samples, alongside custom gearbox components with CNC machining. A blank quotation and an assembly-interface quotation therefore describe different handovers.
Keep the complete grade and drawing revision, then mark what arrives as cast and what arrives finished. The raw-casting and buyer-supplied-blank guides explain the stock, incoming condition and first machining references needed at those boundaries.

04FIND YOUR BUYING ROUTE
The Order Boundary Selects the Route
Use the price-comparison guide for cost structure, and the relevant supply-state guide for the technical handover. For mixed orders, retain an individual definition for every part.
| Your next decision | Most useful starting point |
|---|---|
| Finished part needed for assembly | Iron castings and CNC: define the delivered interfaces and supporting reports. |
| Price above budget | Quotes and delivered cost: compare the same accepted component and delivery boundary. |
| Existing blanks or local finishing | Machining-only or raw-casting guide: identify who accepts stock and performs each operation. |
| Several parts or destinations | Multi-part or multi-plant guide: retain item identity, quantities and receiving rules. |
05FIND YOUR BUYING ROUTE
Secondary Work Follows the Functional Feature
A face, bore or port relationship can drive machining and inspection cost more than the outside size of a casting. Our drawing-based CNC scope is selected around those actual interfaces.
The sourcing guides help you separate one-time tooling, recurring work and acceptance evidence. They also distinguish the quantity being released from a forecast, so sample purchases and repeat orders can be compared on a useful basis.

06FIND YOUR BUYING ROUTE
A Package Ready for a Supplier Discussion
For a single circular casting or a mixed machine set, identify each ordered part, selected material and finished state. Add trial quantities, repeat demand and the receiving destination where relevant.
Use the linked RFQ page to organize those inputs. Your chosen sourcing guide then adds the detail for cost comparison, machining handover or coordinated batches.

07 YOUR NEXT STEP
Bring your component into the conversation
Tell us which component you need, the material, quantity and required supplied condition. Relia will connect your enquiry with the casting, machining and evidence relevant to that part.
- [email protected]
- Phone
- +86 18561762631
- +1 404 203 0971
- Company and address
- Qingdao Relia Industries Co., Ltd.
Shuyuan Road, Qingdao, Shandong, China