Our Story: Making Custom Parts Delivery More Predictable
XPartsLab helps product, engineering and procurement teams turn drawings into reliable custom parts through engineering review, process planning, controlled manufacturing, inspection and delivery.
Why XPartsLab Was Built
Custom parts projects often fail before manufacturing starts: drawings are interpreted differently, process risks are found late and quality evidence is scattered. XPartsLab connects five manufacturing processes with engineering review, controlled production, inspection and traceable delivery.
The Problems Customers Need to Solve
Different interpretations of tolerances, datums and critical dimensions can create assembly risk and rework.
Without an early design for manufacturability review, deformation, tool marks, shrinkage and support risks may appear only after parts are made.
Finish effects on dimensions, appearance and functional surfaces may not be defined before prototype or pilot production.
Scattered quote, process, inspection and delivery records make quality evidence difficult to track and reuse.
Our Mission: Make Every Delivery More Predictable
We move manufacturing risk into design review, process selection and quality planning. Customers receive clear recommendations, an explainable process route and traceable delivery records—not just finished parts.
What Customers Gain
Clear engineering decisions, controlled manufacturing and reusable quality evidence from prototype validation through production.
18,000+
Registered customers worldwide
1 million
Parts manufactured
50+
Industries served
400+
Key customers served
How We Manage Custom Parts Delivery
A clear five-step process connects your requirements to a manufacturable plan, controlled production and documented delivery across CNC machining, sheet metal fabrication, injection molding, vacuum casting and 3D printing.
Clarify Requirements and Drawings
Before quoting, we confirm part use, assembly, critical dimensions, tolerances, material, finish, quantity and delivery requirements so the project begins with complete manufacturing inputs.
Review Design for Manufacturability
We evaluate geometry, tolerances, tool access, forming or molding requirements, support strategy and deformation risk, then recommend practical changes before manufacturing.
Select the Process and Explain Cost Drivers
We recommend a process route and explain how setup, material use, post-processing, inspection and quantity affect cost, lead time, accuracy and appearance.
Control Manufacturing and Key Characteristics
We manage first-article confirmation, critical dimensions, process stability, surface quality and corrective actions to support consistent pilot and production delivery.
Inspect, Document and Deliver
Before shipment, we inspect against the agreed drawings and acceptance criteria. Dimensional records, material certificates, finish requirements and traceability information can be supplied as agreed.
Manufacturing Capabilities for Prototypes and Production
We recommend a suitable process based on part geometry, material, tolerances, finish, quantity and lead time—from prototype validation through production.
We turn agreed dimensions, appearance criteria, material batches, finishes and packaging requirements into inspection records and delivery evidence that customers can review and reuse.
Inspection process
Typical inspection items
Delivery documents
Incoming Quality Control (IQC)
Before manufacturing, we verify the specified material, grade, condition and batch information. Material certificates can be reviewed when required by the project.
Batch traceabilitySpecification and conditionMaterial certificate review
In-Process Quality Control (IPQC)
From first-article confirmation onward, we inspect agreed dimensions, assembly features and surface quality. Suspect parts are isolated, rechecked and corrected before a problem spreads.
First article confirmationCritical dimension checksIssue isolation and correction
Outgoing Quality Control (OQC)
Before shipment, we check the agreed dimensions, appearance, function, quantity, markings and packaging so acceptance is based on defined project requirements.
Final inspection recordAppearance and functionPackaging protection
What to Include for Critical Parts
For assembly, sealing, motion, cosmetic or batch-critical parts, include geometric dimensioning and tolerancing (GD&T), the datum structure, critical-to-quality (CTQ) dimensions, finish requirements and appearance acceptance criteria. Complete inputs help us prepare a more accurate inspection plan.
Correct Issues Before They Affect the Batch
Detect: Identify dimensional, cosmetic, functional, finish or process-trend deviations.
Contain: Isolate and recheck suspect parts to prevent mixing or incorrect shipment.
Analyze: Review tooling, parameters, fixtures, molds, material batches and post-processing conditions.
Correct: Implement the change, verify the result and retain the record for future orders.
Focus Inspection on What Matters Most
Identify CTQ features such as mating, sealing and positioning surfaces, functional holes and load-bearing structures.
Define visible surfaces, texture direction, color, gloss, burr limits and allowable defects before production.
Agree finish thickness, masking, coating boundaries, color variation and secondary operations where they affect acceptance.
Dimensions and Geometric Controls
Critical dimensions: Check bores, shafts, mating surfaces, steps, grooves, wall thickness and positioning features as specified.
Geometric tolerances: Inspect flatness, perpendicularity, position, coaxiality and runout when defined by the drawing and function.
Datums: Align manufacturing, assembly and inspection datums to reduce fit issues and acceptance disputes.
Process trends: Monitor dimensions that can drift during machining, bending or molding.
Caliper and micrometerHeight gaugeCoordinate measuring machineGo/no-go gauges
Packaging: Select protection against scratches, impact, static and moisture for the agreed material and finish.
Visible surface definitionSample comparisonFilm thickness and colorBurr control
Align Appearance Criteria with Samples Before Production
For cosmetic parts, approved samples can establish visible surfaces, texture direction, color, gloss, burr limits and allowable defects before low-volume or production manufacturing.
Dimensional Inspection Report (Optional)
Reports can record measurement results, methods, equipment and acceptance conclusions against the agreed drawing and critical-dimension list.
Material certificates, grade details and batch records can support incoming verification, project archives and repeat-production consistency when required.
Material certificationBatch numberTraceability records
Appearance Standard and Approved Samples (Optional)
For appearance-critical projects, agree visible surfaces, color, gloss, texture direction and defect limits before low-volume or production delivery.
Functional requirements: Assembly, sealing, motion, load, test methods and acceptance conditions.
How We Maintain Delivery Consistency
Approved baseline: First-article results, samples and critical dimensions guide later production.
Key records: Dimensions, appearance criteria, material batches and finish results remain linked to the project.
Traceable issues: Batch, inspection and corrective-action records support review and improvement.
Controlled changes: Drawing, material, process and inspection revisions are aligned by version.
Engineering Teams Accountable for Clear Outputs
Engineering, quality and delivery teams turn each project review into defined recommendations, inspection evidence, progress records and reusable delivery information.
Engineering Review Team
Identifies geometry, tolerance, tooling, forming, molding and support risks before production.
Recommends a process route based on part use, material, accuracy, finish and quantity.
Explains the risks and cost drivers that require customer confirmation.
Coordinates approved quotes, scheduling, manufacturing, inspection, packaging and shipment milestones.
Tracks drawing, material, process and review revisions so production uses the approved version.
Organizes agreed inspection, material, appearance, packaging and delivery records for repeat production.
Already Have Drawings? Request a Custom Parts Quote
Upload your CAD files and add material, quantity, tolerance, finish and delivery requirements. We will review manufacturability and recommend the next step.
This payment channel is provided by the Zouqianba payment platform.
Please use WeChat\Alipay\UnionPay QuickPass to scan the QR code to pay
After payment is completed, the system will automatically confirm the order. Please do not scan the code repeatedly.
If you have any questions, please contact your account manager:
(Same number on WeChat) / Working hours: 9:00-18:00
1. Please follow the information below to make the remittance.
Recipient bank:
Beneficiary Bank Branch:
Benefit account name:
Bank account number:
Please fill in the order number in the remarks when transferring so that you can promptly confirm the arrival of your money. If you have completed bank transfer, please click the button below to submit your order:
2. The remittance arrival cycle is generally 1 to 5 working days. After the payment arrives, we will arrange the order to enter the follow-up process.
If you have any questions, please contact your account manager:(Same number on WeChat) / Working hours: 9:00-18:00
