![\"Designer](\"https:\/\/fursone.com\/wp-content\/uploads\/2026\/05\/designer-examining-knit-fabric-samples-overview-scaled.webp\")
What A, B, and C actually separate<\/h2>\n
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.<\/p>\n
Grading is convention; inspection is standard<\/h2>\n
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<\/a> standards, and we broke down how the scoring works in practice in our 4-point inspection guide for buyers<\/a>. Pair it with a statistical sampling plan for the lot, the AQL approach we covered in our AQL sampling guide<\/a>, and the grade letters stop being a supplier opinion and become an inspection outcome.<\/p>\n 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 dye lot consistency guide<\/a> explains how mills control it and what the limits are.<\/p>\n At our mill, grading happens at two gates. The first is during inspection on the inspection frame after finishing, where trained staff log defects against the 4-point scoring and the customer’s spec sheet; rolls over the agreed ceiling are pulled from first quality automatically rather than by negotiation. The second gate is the pre-shipment audit on packed lots, which is where statistical sampling lives. Across 300+ looms, defect patterns are also fed back to the weaving floor, tension, beat-up, and speed parameters are the usual levers, and the relationship between those settings and cloth quality is documented in our weaving parameters article<\/a>. Buyers visiting or auditing should ask to see both records: the per-roll inspection logs and the lot-level sampling report. A mill that can produce both is grading by system; a mill that only produces the word “A” is grading by opinion. Our woolen overcoat fabric line<\/a> runs the same two-gate structure, with the acceptance ceiling written into the order confirmation.<\/p>\n Five lines, all of them cheap to add and expensive to be missing. If a supplier resists putting grading criteria in writing, that resistance is itself the grading information you needed.<\/p>\n What is Grade A fabric?<\/strong> Is Grade B fabric safe to buy?<\/strong> Who decides where A ends and B begins?<\/strong> What documents should accompany a graded shipment?<\/strong> For how the order side connects to the numbers on your invoice, see the payment terms guide for Chinese fabric mills<\/a>.<\/p>\n<\/div>\n![\"Fabric](\"https:\/\/fursone.com\/wp-content\/uploads\/2026\/08\/rfq-template-featured_1785860753.png\")
Where Grade B makes sense, and where it quietly costs more<\/h2>\n
How mills like ours run the sort<\/h2>\n
What to write into the purchase order<\/h2>\n
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Frequently asked questions<\/h2>\n
First quality: the roll meets every clause of the agreed specification including defect limits, and ships at contract price. The definition only has teeth when the spec and inspection method are written down.<\/p>\n
For small-piece cutting, sampling, and hidden-zone applications, documented B lots can reduce cost sensibly. For large visible panels, the yield loss and sorting labor usually erase the discount.<\/p>\n
By convention the mill sorts, but the boundary should be anchored to an inspection framework such as the 4-point system with an agreed acceptance ceiling, so the grade reflects measurement rather than opinion.<\/p>\n
Per-roll inspection logs, a lot-level sampling report against the agreed AQL, and the shade reference ID used for acceptance.<\/p>\n