JW0020 · Drawing and supplied-state review
JW0020 construction machinery casting
JW0020 is an illustrated construction-parts catalogue identifier. Its detail does not establish a controlled alloy, drawing, dimensions or structural function; those belong in the actual enquiry and approved order.
First confirm whether the enquiry is for the pictured part
The actual detail names “Construction Machinery Parts Jw0020” and supplies an illustration. It does not publish a usable item-specific material or dimensional table. [1] Ask whether the supplier is quoting that exact catalogue part or using it only as an example of manufacturing to your drawing.
Catalogue-part enquiry
Request the current controlled drawing, full specification, intended interfaces and available delivered state for JW0020.
Custom-part enquiry
Supply your own drawing/revision, alloy/condition, use and acceptance. Keep your part identity distinct from the catalogue example.
No suspension, lifting or hydraulic function is inferred from the shape. No company-wide low-alloy/wear-resistant material statement is turned into a specific JW0020 grade.
Compare quotations at the same delivered stage
| Quoted condition | Define in the order | Typical comparison risk |
|---|---|---|
| Raw casting | Material/condition, cast geometry, cleaning and allowances | Buyer still carries finishing and related acceptance work |
| Machined casting | Finished datums/features, treatments and inspection | Similar shape but different machining/test scope |
| Finished component | All required finishing, final dimensions and supplied accessories | Assuming assembly or additional items are included |
JW’s company page describes casting, heat treatment, blasting and machining options. [2] It does not establish that every operation is included for JW0020. Obtain the proposed route and responsible operators for the actual offer.
Link casting allowances to finished critical features
- Casting record
- Selected alloy/condition, proposed route, casting geometry and approved allowance/tolerance basis.
- Finished record
- Datums, mating features, critical dimensions and surface requirements at delivery.
- Transition between stages
- Machining setup/allowance proposal and inspection responsibility before/after finishing.
- Tooling and change
- Tool ownership, revision, approved changes and repeat-order configuration.
ISO 8062-3 provides a framework for casting dimensional/geometrical tolerances and allowances. [3] The standard name alone does not select a tolerance grade or guarantee a finished interface. Resolve actual drawing requirements with the supplier; no numerical tolerance is invented here.
Use the first sample to approve the actual process
- Freeze the proposal. Full part identity, drawing, material/condition, process scope and actual casting/machining operators.
- Agree relevant evidence. Heat/lot traceability, required material/mechanical records, dimensional results and any specified defect examination with acceptance.
- Review deviations. Resolve nonconformities, repair/concession and changes before first-sample acceptance.
- Control repeat supply. Preserve revision/process identity, agreed lot sampling and approval for changed material, tooling or operations.
Reported spectrometry, mechanical-test machines, flaw detectors or CMM equipment are capability claims. [2] They are not evidence a particular JW0020 sample was measured or passed. Ask for results linked to the actual part and required method, rather than an unrelated equipment photograph.
Must every casting receive every listed laboratory test?
No universal test package is selected here. Assign the applicable requirements from the drawing and intended service, agree the method and acceptance, then verify the actual records.
Is a repair automatically acceptable after inspection?
Define permissible repair/concession, approval authority, procedure and reinspection in the actual order. A satisfactory-looking surface is not an approved deviation.
Prepare the JW0020 or custom-drawing request
Sources & review
- Official JW0020 entry ↗
Identifier, category and illustration; no controlled item-specific alloy/dimensional specification established.
2026-10-11 - JW process/laboratory and operator description ↗
Company-wide route and test-equipment claims; not a JW0020 manufacturing plan or actual sample record.
2026-10-11 - ISO 8062-3:2023 publisher scope ↗
Casting tolerances and machining allowances; no grade/value assigned without an approved drawing.
2026-10-11
Specifications come from the manufacturer’s published information and the sources above; buying advice is written by CivilEquip with AI assistance. Ask the manufacturer to confirm the data for your configuration. Editorial policy · Report a correction.