Stoffgradering: A-, B- og C-kvalitetsruller forklart

Fabric roll grading into A, B, and C qualities is a commercial convention mills use to sort first-quality cloth from rolls with visual or structural deviations. Grade A meets the full spec and ships at list price; Grade B carries minor, often hidden defects and sells at a discount; Grade C has visible or repeated defects and moves into non-apparel uses.

The labels are not one universal standard, though, so the grading language only protects you once it is tied to written defect criteria. This guide explains what each grade typically contains, how grading connects to formal inspection systems, and what buyers should pin down in writing before accepting a discounted lot.

What A, B, and C actually separate

Grade A is first quality: the roll meets every clause of the agreed spec, composition, weight, shade, width, and defect limits, and it is what your purchase contract describes. Grade B usually means the fabric is structurally sound but carries cosmetic deviations: a shade band slightly off the approved lab dip, minor slubs outside the agreed tolerance, a narrow selvedge stain, or short sections of weaving irregularity. Mills sell B grade at a discount precisely because the defects are survivable for many end uses, especially when they fall in cutting waste or hidden garment zones. Grade C collects the rolls where defects are frequent or severe enough to cut usable yield sharply: repeating weaving faults, dye streaks across the width, holes, or contamination. The honest way to think about the ladder is risk placement, A places no risk on you, B places judgment risk, C places yield risk.

Grading is convention; inspection is standard

Here is the caution that saves money: A, B, and C are not defined by a single international standard, and the boundary between them varies mill by mill. One mill’s B is another mill’s C. The professional fix is to anchor grading to a recognized inspection framework so the letters carry measurable meaning. The textile industry’s workhorse is the 4-point system, which scores defects by size and sums penalty points per linear meter; buyers set an acceptance ceiling and any roll above it is rejected or re-graded. The method is maintained under ASTM International standards, and we broke down how the scoring works in practice in our 4-point inspection guide for buyers. Pair it with a statistical sampling plan for the lot, the AQL approach we covered in our AQL sampling guide, and the grade letters stop being a supplier opinion and become an inspection outcome.

Where Grade B makes sense, and where it quietly costs more

Discounted B-grade rolls genuinely earn their place in some programs. If you cut small pattern pieces, run a sampling line, or produce items where the fabric’s reverse or interior faces outward wear, a documented B lot can cut material cost without touching quality perception. The trap is buying B for applications that expose the whole cloth surface, full-width shirting panels, large coat fronts, upholstery faces, because the discount rarely compensates for the yield loss and the sorting labor at the cutting table. Run the math on usable meters, not invoice meters: a B lot at 70 percent of price but 80 percent usable yield is more expensive per good meter than A grade at full price. Shade-sensitive programs add a second risk, since off-lot dyeing behaves differently under light and next to approved trims; if shade consistency across bulk matters to you, our veiledning for konsistens i fargepartier forklarer hvordan tekstilfabrikker styrer det og hva grensene er.

Hvordan fabrikker som vår utfører sorteringen

På vår fabrikk skjer gradering gjennom to porter. Den første er under inspeksjon på inspeksjonsrammen etter etterbehandling, der trent personell registrerer feil mot 4-punktsskalaen og kundens spesifikasjonsark; ruller som overstiger den avtalte grensen, trekkes automatisk fra førstekvalitet, ikke gjennom forhandling. Den andre porten er før-avsendingsrevisjonen av pakkede partier, og det er her statistisk prøvetaking hører hjemme. På tvers av over 300 vevstoler tilbakemeldes også feilmønstre til vevgulvet, spenning, innslagsslag og hastighetsparametere er de vanlige virkemidlene, og forholdet mellom disse innstillingene og stoffkvaliteten er dokumentert i vår vevparametere-artikkel. Kjøpere som besøker eller reviderer bør be om å få se begge registrene: inspeksjonsloggene per rull og prøvetakingsrapporten på partinivå. En fabrikk som kan fremlegge begge, graderer etter system; en fabrikk som bare kan produsere ordet “A”, graderer etter synsing. Vår ullstofflinje for overfrakker kjører samme to-porter-struktur, med akseptgrensen skrevet inn i ordrebekreftelsen.

Hva som skal skrives inn i bestillingen

• Inspeksjonsmetoden og akseptgrensen: angi 4-punktsmetoden og maksimalt antall poeng per løpemeter, eller per 100 kvadratmeter, eksplisitt.
• Prøvetakingsplanen: prøvestørrelse og AQL-nivå for partiakkseptering, ikke bare rull-for-rull-sortering.
• Hva som skjer med avviste ruller: erstatning, kreditt eller omgraderingsprising, avgjort før tvisten oppstår.
• Fargereferanse: den godkjente lab-dippen eller blanket sample-ID-en som Grade A-nyansen måles mot.
• Feilmerking: om feil er merket med klistremerker eller kantmerker slik at tilskjærerne dine kan jobbe rundt dem.

Fem linjer, alle sammen billige å legge til og dyre å mangle. Hvis en leverandør motsetter seg å sette graderingskriteriene skriftlig, er den motstanden i seg selv graderingsinformasjonen du trengte.

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