Agree the Acceptance Requirements
Quality requirements begin with the material specification, drawing revision, delivery condition and inspection scope. Identify the dimensions, surfaces and features that need to be reported before the order is released.
Material and Condition
Request an MTC and hardness report where required. Identify the intended material grade, condition and any traceability requirements in the inquiry so that the documentation scope can be confirmed.
Dimensional Inspection
Dimensional reports are available for plates and mold bases. CMM reports can be provided for mold base projects. Specify the required datums, critical features and inspection records on the drawing or purchase order.
See the precision steel plate incoming inspection guide for measurement setup and evidence to record.
Ultrasonic Testing
UT reports are available on request. State any required test standard, acceptance level, coverage or reporting requirement for technical review. Availability of a UT report is not a declaration that every order uses the same inspection scope.
Keep the Tolerance Definitions Separate
Dimensional tolerance, parallelism, flatness, perpendicularity and surface roughness describe different requirements. Plate finishing specifications are set out on the Precision Steel Plates page. Any additional requirement should be identified in the drawing.
Documents to Request
- MTC material documentation.
- Hardness report.
- Dimensional inspection report.
- CMM report for the agreed mold base features.
- UT report when requested and agreed.
Include the required documents in your inquiry so they can be covered by the quotation.
Match Each Requirement to a Document
| Requirement | Document to request | Scope to define |
|---|---|---|
| Material identity and delivery condition | MTC material documentation | Grade, order item and requested certificate details |
| Hardness | Hardness report | Required condition, measurement scope and acceptance |
| Finished plate or mold base dimensions | Dimensional report | Drawing revision, datums and measured features |
| Mold base geometric relationships | CMM report | Critical features and agreed inspection plan |
| Internal material examination | UT report, on request | Test standard, acceptance level and reporting scope |
Document availability does not imply that every document or test is included by default. Identify what you require before ordering.
Questions About Inspection Requirements
Understand flatness, parallelism and roughness, or review the documents available for your order.
Quality Issue Resolution
If you identify a dimensional or material discrepancy, please contact stella@lichengdaheating.com with the order number, part identification and inspection results. We will review the issue against the approved drawings and agreed specifications, then agree on an appropriate solution, which may include local repair, replacement components or factory rework.
- Record the received condition, affected features and measured values. Preserve the part and evidence while the issue is reviewed.
- Share the approved drawing revision, units, datums, measurement method and instruments, including temperature and support conditions where relevant. Identify any machining, heat treatment or assembly already performed.
- Compare the evidence with the confirmed specification and available production or inspection records. If needed, agree an independent inspection and how its findings will be used.
- Confirm the technical solution, responsibilities, costs, schedule and final inspection in writing before repair, return shipment or disposal.
Please report issues promptly within any notification period agreed for the order. Inspection scope, claim conditions and cost allocation follow the applicable order terms.
Repair and Replacement Options
Local repair can be reviewed when it can restore the agreed dimensions and function without compromising the part. Replacement of one mold base plate requires checking mating features, fits, assembly and final inspection. Factory rework or replacement can be reviewed when those options are more appropriate. Any price adjustment or other settlement also requires written agreement.
Before local machining or a return shipment, agree the proposed work and any approved costs in writing. Retain the affected part until return or disposal is agreed. These options are assessed for the specific issue; they are not an automatic promise of free repair or replacement.