01 / 10bom · component procurement

Custom Cast, Forged and Machined Components in One BOM Enquiry

Blue elongated split connector with separate mating regions
A connector remains its own line in a mixed-process BOM. Specify its material, manufacturing route, mating geometry and acceptance requirements individually.

You can ask Relia to review cast, forged and machined components within one controlled BOM. Each item keeps its own drawing, material, route and acceptance requirements, while the shared assembly identifies the mating relationships. This helps your purchasing team coordinate connected parts without assuming that one sample, process description or test result qualifies every component in the order.

Read the overview and page sections

We group the parts by forming route, material and assembly interface, then identify the operations needed to reach their supplied condition. This gives your project a coordinated review without hiding unresolved items inside a single combined price.

02 / 10bom · component procurement

One Project Review Keeps Individual Part Requirements Visible

Relia separates item-level manufacturing from the relationships between the items. A cast housing, forged connector and machined sleeve may need different starting materials and operations, even when they belong to one equipment project. We keep the quoted scope and sample requirements attached to each line, then use the assembly references to identify interfaces that need coordination.

Cast itemBody and required finishing
Forged itemSpecified material and form
Machined itemDefined starting stock and interfaces

03 / 10Component decisions

Assign a Manufacturing Boundary to Every BOM Line

Avoid using one process menu for all components. A forged link, cast body and machined sleeve can have different material, tooling and inspection needs.

Assign a Manufacturing Boundary to Every BOM Line
Component routeDefine on the enquiryAcceptance reference
Cast itemCast grade, blank envelope and finished contactsCasting and final-part drawing
Forged itemAlloy, condition, die features and machiningForging and finished requirements
Machined itemStarting stock and supplied conditionOperation scope and final drawing
Companion hardwareSeparate part codes and quantitiesIncluded contents and relevant specification
04 / 10bom · component procurement

Assign Forming and Finishing Operations by Component

A hollow housing may call for a casting route with core or shell access, while a solid loaded connector may need a forging review.

ribbed cylindrical housing illustration. A cast housing is a distinct BOM line.
ribbed cylindrical housing illustration. A cast housing is a distinct BOM line. Related catalogue geometry
  1. Choose the forming route by component
  2. Connect the finishing requirements where parts meet
Open the manufacturing route and detailed review

Choose the forming route by component

A fitting can require turning, drilling or milling after its blank is formed. Route selection follows the geometry and required material condition of each line rather than the broad description of the assembly.

Connect the finishing requirements where parts meet

Relia's coordination discussion connects the finishing steps where parts meet: a bore and shaft, two mounting faces or a repeated bolt pattern. Compare the related drawing references before agreeing separate tooling. A common delivery can then retain individual part identity and acceptance, so progress on one item does not imply approval of the whole BOM.

Quote a mixed-process BOM by the work each part needs
  1. BOM identityAssign each component its material, revision and quantity.
  2. Blank routeReview casting, forging or other forming per item.
  3. Finished scopeName machining, treatment and finish for that component.
  4. Shared deliveryCombine purchasing while retaining separate item acceptance.
Walls and ribsKeep section transitions visible.
Working contactsRelate bores and mounting faces.
05 / 10bom · component procurement

Coordinate Mating Features Across Different Manufacturing Routes

Start with the assembly's actual contacts: a shaft entering a sleeve, a pin crossing paired lugs, or a bracket sitting on a machined face. Assign the required size, location and condition to the appropriate component drawing. A shared assembly function does not mean that both parts use the same manufacturing datum or material.

Relia reviews where a route change could affect the adjoining item. Casting stock, forging cleanup, final turning and any surface treatment must leave the specified mating condition. Agree component checks and any separate assembly check before approving the order, with each sample identity and supplied quantity remaining attached to its BOM line.

flanged annular body illustration. An annular fitting is a different material and finishing line.
flanged annular body illustration. An annular fitting is a different material and finishing line. Related catalogue geometry
BoreIdentify the final fit.
FaceRelate the working contacts.

06 / 10Component decisions

Bring the Project Together at the Handoffs

The shared project should simplify communication while leaving the interfaces and responsibility of each component visible.

Bring the Project Together at the Handoffs
HandoffCoordination focusOutput
Technical packOne controlled reference per lineBOM with drawing links
Quote reviewIncluded route, finishing and recordsComparable line-item scope
ApprovalSample or first-article status per componentAn explicit release list
DeliveryQuantity, identity and protection per packShipment list connected to the BOM
07 / 10bom · component procurement

Qualification Progress Is Tracked Per Item

One component may be ready for repeat supply while another remains at sample review. Keep that status visible instead of declaring the entire BOM approved after one successful trial. Record changes against the affected item and identify any impact on mating parts or the complete assembly.

One project · separate release status
Each BOM line
Part code, revision, quantity and supplied condition
Each sample
Actual identity, agreed checks and approval state
Each change
Affected item and any mating-item impact
Release only the agreed lines. One approved housing does not release a connector or sleeve still under review.
08 / 10bom · component procurement

Combined Delivery Keeps Item Identity Intact

Agree whether components ship together or separately and how each quantity and record package is identified. Different materials and finished surfaces may require different protection. Shared shipment coordination does not remove the need for line-item acceptance at receipt.

two-leaf hinge illustration. A hardware component is a separate geometry and acceptance line.
two-leaf hinge illustration. A hardware component is a separate geometry and acceptance line. Related catalogue geometry
PivotDefine the working contact.
FixingsProtect the mounting geometry.
09 / 10bom · component procurement

Send the BOM with Its Supporting Drawings

Use the BOM as an index to the actual technical packages. The linked casting-plus-CNC, forging and traceability guides explain separate tasks within the order. This gives your purchasing team a coordinated enquiry without turning several different components into one vague manufacturing claim.

10 / 10Project enquiry

Send the Details for Your Component Review

Tell us what you need to buy and the condition you need to receive. Relia Casting will review the component, manufacturing scope and requested evidence with you before an order is agreed.

  • Controlled BOM and line-item quantities
  • Drawing and material for every item
  • Required forming and finishing boundaries
  • Mating-interface and approval information
  • Item-specific records and delivery terms
Open the Enquiry Page
Qingdao Reliacasting Co., Ltd.
Qingdao office
No. 96 Shuyuan Road, Qingdao, Shandong, China

About our component supply · Contact details and project enquiry