Raw Silk Yarn 20/22D: Specifications, Grades & Export Terms
B2B buyer specification sheet
Christopher Bu supplies 20/22 denier mulberry raw silk yarn from Yizhou, China — the world's largest raw silk origin — in four varieties, with 5A/6A grade raw silk, HS heading 5002 classification, FOB/FCA export terms and T/T payment. Every specification is confirmed in the written quotation.
Specification sheet
Yarn identity
| Product | Mulberry raw silk yarn (filature silk), Bombyx mori, mulberry-fed |
|---|---|
| Denier | 20/22D standard; 13/15D and 27/29D on request |
| Varieties | 20/22D white raw silk · Natural dupion silk yarn · 1-ply luxury silk yarn · GOTS-certified organic silk |
| Color / finish | Natural white or natural dupion; greige (undyed) or dyed to order from a standard shade card or your custom color |
| Standard | GB/T 1797-2008; moisture controlled below 11% |
Grade & origin
| Origin | Yizhou, Guangxi, China — the world's largest raw silk origin |
|---|---|
| Grades | Yizhou raw silk regularly reaches 5A and 6A, the highest quality tiers; 4A / 5A / 6A availability is confirmed by variety |
| Organic option | GOTS-certified organic raw silk, 100% organic silk content across the full process |
Classification & packing
| HS classification | Raw silk (not thrown) falls under HS heading 5002. The exact subheading applying to your shipment is confirmed in the written quotation and shipping documents. |
|---|---|
| Packing | Export cartons / bales (60 kg per bale typical); luxury silk yarn in 5 kg bundles |
| MOQ | Raw silk is sold by weight, not by the metre. There is no universal fixed minimum; the final MOQ and any organic status are confirmed in the written quotation. |
Export terms
| Samples | DHL worldwide or designated courier |
|---|---|
| Bulk | FOB Nansha / FOB Yantian / FOB Qinzhou / FCA Yizhou (preferred) |
| Lead time | 15–25 working days for eligible regular bulk orders after sample, specification, deposit and material availability are confirmed; the binding schedule is stated in the signed order documents |
| Payment | T/T wire transfer — 30% deposit, 70% against Bill of Lading for bulk orders |
| Documents | Spec sheet, lab dip, inspection report, packing list, certificate of origin |
| Certification | GOTS, OEKO-TEX Standard 100 Class II, China Organic and quality-system files for qualified buyer review within each document's listed scope; certificate numbers provided with the quotation and shipping documents |
Specifications are industry-standard values and are confirmed against current mill availability before quotation. The final specification, MOQ, schedule, applicable HS subheading and organic status are stated in the written quotation and shipping documents.
What every written quotation includes
This framework shows the items that accompany every written quotation and order confirmation. Each item is either stated in the written quotation or confirmed in writing before order approval. Specific values are set per order and stated in the written quotation.
Entity & verification
| Legal entity & business registration | Stated in the written quotation |
|---|---|
| Authorized contact for the order | Stated in the written quotation |
| Business licence | Confirmed in writing before order approval |
| Production origin | Stated in the written quotation |
Per-batch quality evidence
| Grade and quality tier by lot | Stated in the written quotation |
|---|---|
| Evenness | Stated in the written quotation |
| Cleanness | Stated in the written quotation |
| Neatness | Stated in the written quotation |
| Lot mark / traceability | Stated in the written quotation |
| Grading certificate per lot | Confirmed in writing before order approval |
Samples & testing
| Swatch / sample with the quotation | Stated in the written quotation |
|---|---|
| Test method reference | Stated in the written quotation |
| Inspection / test report | Confirmed in writing before order approval |
Commercial & shipping
| Price & payment terms | Stated in the written quotation |
|---|---|
| Incoterms | Stated in the written quotation |
| Lead time | Confirmed in writing before order approval |
| Packing & bale specification | Stated in the written quotation |
| HS classification | Stated in the written quotation |
Compliance
| Certification (GOTS / OEKO-TEX) | Confirmed in writing before order approval |
|---|---|
| Certificate number | Stated in the written quotation |
| Destination-market compliance | Confirmed in writing before order approval |
This is the field-placeholder version: it shows the acceptance framework a buyer sees during initial screening. When source documents are shared, items can be upgraded to a verifiable version with original evidence attached.
Four yarn varieties
20/22D White Raw Silk Yarn
The standard filature silk for crepe and satin weaving, with a bright, clean white base for accurate color matching.
20/22D · 4A / 5A / 6A
Natural Dupion Silk Yarn
Unbleached and un-dyed, with prominent slubs for textured weaving, curtains and interior textiles.
Natural (unbleached) · reference MOQ confirmed in quotation
Luxury Silk Yarn
1-ply, 20 denier, selected from the finest batches for statement weaving and high-gloss garments.
1 ply · 20D · 5 kg bundles
GOTS-Certified Organic Silk
Verifiable organic status across cultivation, reeling and weaving, supplied as raw silk, greige yarn or greige fabric.
GOTS · license no. and validity provided with quotation
Full descriptions and applications are on the raw silk yarn product page.
How to specify your order
- 1State the denier (20/22D is the standard starting point) and the grade you need.
- 2Choose the form: white raw silk, natural dupion, luxury or GOTS-certified organic.
- 3Specify the finish: greige (undyed) or dyed to order from a standard shade card or your custom color.
- 4Give the target volume in kilograms, your destination port and required delivery window.
- 5List the certification files your market or brand requires, so applicability can be checked against the current document scope.
- 6Ask for a written quotation — the final specification, MOQ, schedule and applicable HS subheading are confirmed there.
For a plain-English explanation of yarn versus fabric weights, see momme vs denier; for the sourcing process, see sourcing silk for ateliers worldwide. Full commercial terms are on the export terms page.
Frequently asked questions
What is 20/22D raw silk yarn?
20/22D is filature silk measured in the 20–22 denier range, the standard starting point for silk crepes, satins and fine weaving. Denier measures yarn weight; momme measures the weight of woven cloth. Buyers use denier when buying yarn and momme when buying fabric.
Which HS code applies to raw silk yarn?
Raw silk (not thrown) is classified under HS heading 5002 in the Harmonized System. The exact subheading that applies to a shipment depends on the goods and destination, so we confirm it in the written quotation and shipping documents rather than stating a fixed code for every order.
What does 5A / 6A mean for raw silk from Yizhou?
5A and 6A are the highest quality tiers in the Chinese raw silk grading system. Yizhou, in Guangxi, has held China's top ranking for mulberry field area, cocoon output and raw silk production for over two decades, and its raw silk regularly reaches these grades. Grade availability for a given variety is confirmed in the written quotation.
How is raw silk yarn packed for export?
Raw silk yarn is packed in export cartons or bales, with 60 kg per bale as the typical reference and 5 kg bundles for luxury silk yarn. Final packing is confirmed against the order and destination before shipment.
What is the minimum order quantity for raw silk yarn?
Raw silk is sold by weight, not by the metre, and there is no universal fixed MOQ. Reference minimums vary by variety — for example, natural dupion silk yarn is typically quoted around 10 kg and luxury silk yarn around 5 kg — and the final MOQ is confirmed in the written quotation.
Can raw silk yarn be supplied dyed, or only greige?
Both. Yarn and fabric can be supplied greige (undyed) or dyed to order — we offer a standard shade card and custom color matching. Printed options are not listed in this specification.
What are the payment and shipping terms for bulk raw silk?
Bulk orders ship FOB Nansha, FOB Yantian, FOB Qinzhou or FCA Yizhou (preferred), with samples sent by DHL worldwide or a designated courier. Payment is T/T — 30% deposit and 70% against Bill of Lading. Full terms are on our export terms page.
Can I get samples before placing a bulk order?
Yes. Free mini swatches may be supplied after availability is confirmed, and full-size samples are chargeable. See our sample service and request a quotation with your denier, grade and intended use.
What does your written quotation include?
Every written quotation and order confirmation covers the items in our acceptance framework: legal entity and business registration, grade and quality tier, evenness, cleanness and neatness, lot mark and traceability, grading certificate, sample and test references, price and payment terms, incoterms, lead time, packing, HS classification, certification, certificate number and destination-market compliance. Each item is either stated in the written quotation or confirmed in writing before order approval.
How can I verify the grade or certificate of a silk shipment?
The grading certificate and certificate number are provided with the written quotation and shipping documents, and certification is confirmed in writing before order approval. The issuing authority can be used to check a licence or label, and we can arrange buyer verification when source documents are shared.
When are the final specification details confirmed?
Specification values are set per order. They are stated in the written quotation and any remaining details are confirmed in writing before order approval, so both parties work from the same document before production begins.
Request a specification or quotation
Tell us your denier, grade, target volume in kilograms, destination port and required certification files. Our B2B team will respond with a written quotation and current sample availability.
See also: FAQ · Certificates · Yizhou mulberry silk origin