Shijiazhuang, Hebei, Chinasales@kaifil.com
KAIFIL

Kaifil

Quality control for filtration components

Incoming material checks, in-process measurement and outgoing inspection connect the delivered part to its drawing, material lot and order requirements.

Inspect the feature that affects installation

A disc is checked at its outside diameter and seating edge; a cylinder at diameter, length and seam; a basket at the flange, body and removal handle. Inspection points follow the part rather than a single checklist for every product.

Material documents and finished-part records

A material certificate identifies the supplied metal lot. A dimensional report records the fabricated part. EN 10204 3.1 certificates, conformity statements and first-article records can be included in the order; none of these documents substitutes for a test that has not been performed.

Sampling and nonconformity

Agree the sample quantity, critical characteristics and acceptance limits before production. For a quality concern, send the part and order reference, measured result and photographs. These identify the affected shipment and allow the result to be compared with the approved specification.

Inspection matrix

CheckpointMethod or featureRecord available within the order scope
Incoming mesh and wireMesh count, wire diameter, surface and material identificationMaterial lot details and ordered mill certificate
Cut or formed partCaliper or gauge checks on OD, ID, length, thickness and critical fitDimensional results against the drawing
Welded componentVisual seam continuity, alignment, distortion and mesh damageWeld and assembly inspection notes or photos
Layered screen packLayer sequence, registration, edge retention and total thicknessPack construction and dimensional checks
First articleAgreed drawing features before batch releaseFirst-article checklist, measurements and photos
Packing and dispatchQuantity, part marking, protected edges and package conditionPacking list and requested pre-shipment photographs

Pressure, integrity or other special testing requires a defined method and fixture. Confirm test availability and third-party witnessing during quotation.

Inspection and documentation questions

Which measuring equipment is used for routine inspection?

Routine checks include mesh-count verification, digital calipers, gauges and visual inspection of welds and assembly. The selected method must resolve the tolerance on the drawing.

Is every dimension measured on every part?

The sampling plan depends on the order and the criticality of the feature. Specify any 100% checks, first-article approval or agreed sampling plan before the order is released.

Can a third party inspect the order?

Third-party inspection can be coordinated for project orders. Agree the agency, inspection scope, hold point and schedule before production or shipment.

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