Introduction
Un RFQ qui dit seulement bobine SPCC laminee a froid, 0.8 x 1250, qualite commerciale ne gele pas une bobine achetable. Un laminoir cotise SPCC-SD huile legere. Un autre envoie de la bande full-hard qui fissure aux coins tube. Un troisieme met DC01 sur la proforma et SPCC sur l etiquette.
Ce tear-down s adresse aux usines de mobilier acier et OEM tube-tole qui achettent bobine SPCC laminee a froid. C est un guide achat, pas un substitut de l edition JIS G 3141 commandee. Pour croiser DC01 / ASTM A1008, voir SPCC vs DC01 vs ASTM A1008. HR vs CR: bobine laminee a chaud vs a froid.
Les champs ligne mobilier qui rendent trois devis SPCC incomparables
Quick technical summary:
Pour une bobine SPCC mobilier, gelez la nuance JIS G 3141, le temper (A / S / dur), l epaisseur BMT avec classe de tolerance, largeur refendue et rive, surface poudre/peinture, huile, emballage anti-rayure et lignes EN 10204 3.1 avant de classer les prix FOB.
| Missing RFQ field | What the mill fills | Why furniture quotes cannot be ranked |
|---|---|---|
| Temper omitted | Stock S, A, or hard 8/4/2/1 | Soft panel and hard strip share one price |
| Surface / oil omitted | Heavy oil, light oil, or dry | Powder adhesion and rust risk diverge |
| BMT vs nominal thickness | Nominal only, no class A/B | Panel flatness and weld gap drift |
| Slit width open | Parent coil 1000-1500 mm | Unslit parent cannot feed tube mill |
| Packing left as export standard | Soft wrap without edge guards | Visible face scrap from coil rub |
| MTC lines not named | Heat chemistry only | Temper and size proof missing at PSI |
Temper, recuit et huile: ce que chaque symbole gele
Sous JIS G 3141, la qualite commerciale est SPCC. Le temper est un symbole separe. Finition: D (mat) ou B (brillant). Exemple: SPCC-SD. Livraison par defaut huilee sauf unoiling.
| Temper symbol | Meaning on PO | Furniture-line implication |
|---|---|---|
| A | As-annealed | Soft, formable; coil break / edge wave possible |
| S | Standard temper (skin-passed) | Common default; better panel flatness |
| 8 / 4 / 2 / 1 | 1/8 to full hard | Higher hardness; bend/tube window shrinks |
| SPCCT | SPCC with tensile guarantee | When drawing needs tensile/elongation gate |
Limites chimiques commerciales citees pour SPCC (confirmez l edition JIS G 3141). Pas d upgrade silencieux vers SPCD / SPCE. Voir guide SPCC vs DC01.
| Element | Typical SPCC commercial max | Buyer note |
|---|---|---|
| C | 0.15 max | Weldability / formability |
| Mn | 0.60 max (some extracts up to 1.00) | Confirm edition |
| P | 0.100 max | Impurity gate |
| S | 0.035 max | Impurity gate |
Epaisseur BMT, classe de tolerance et largeur refendue pour tube et cadre
Les usines melangent bobine large pour armoires et bobine refendue pour tube/cadres. Exemple commercial: ecrire ±0.02 mm sans classe ne suffit pas. Preferer epaisseur commandee + classe JIS G 3141 A/B. Aligner avec checklist tolerances.
| Dimension field | Freeze on RFQ | Bid failure if open |
|---|---|---|
| BMT / nominal thickness | mm + JIS G 3141 class A or B | One mill class A; another wider commercial band |
| Parent coil width | 1000 / 1219 / 1250 / 1500 mm + edge | Nesting and scrap diverge |
| Slit width | Finished strip width, tol, burr, camber | Unslit parent cannot feed tube mill |
| Coil ID / max weight | Often 508 or 610 mm ID | Line stops when OD/weight exceeds decoiler |
| Flatness / camber | Sheet class; narrow-strip camber | Doors and long frames warp |
Classe de surface pour adhesion peinture poudre et laque
La plupart du mobilier acier est peint poudre ou laque apres formage et soudage. La classe de surface est une entree peinture, pas un surnom de laminoir.
| Surface / prep field | Furniture intent | RFQ language |
|---|---|---|
| Finish D / B | Dull vs bright | SPCC-SD or SPCC-SB |
| Oil film | Rust protection vs degrease load | Light / heavy / dry |
| Critical face | Visible cabinet face | No rust, pits, deep scratches on outer wrap |
| Powder cleanliness | Phosphate / powder adhesion | Degrease compatibility note |
| Weld / grind zones | Tube frames | Separate from coil surface |
Controle acheteur: film d huile, rayures d emballage et lignes MTC 3.1
Trois motifs de reclamations: (1) mismatch d huile; (2) frottements sans edge guards; (3) MTC chimie seule. Utilisez pratique EN 10204 3.1 et modele RFQ.
| Packing / QC item | Minimum furniture export ask |
|---|---|
| Anti-rust wrap | VCI paper + plastic film |
| Mechanical protection | Edge rings, side boards, steel straps |
| Stowage | Eye-to-sky or eye-to-wall; ~25-28 MT per 20GP |
| Marking | Grade, temper, size, heat/coil number |
| Documents | EN 10204 3.1 MTC + packing list by coil |
Bloc RFQ a coller pour bobine SPCC mobilier acier
Collez et editez. Ne laissez pas les parentheses ouvertes sans choisir.
Product: Cold-reduced carbon steel coil for steel furniture (panels / tube-frame strip)
Standard / grade: JIS G 3141 SPCC
Temper: S (or A / 8 / 4 / 2 / 1 - choose one). SPCCT tensile guarantee: Yes/No
Surface finish: SD (dull) or SB (bright)
Oiling: Light oiled / heavy oiled / dry (choose one); oil film compatible with powder-coat degrease
Thickness (BMT): __.__ mm; tolerance: JIS G 3141 class A or B (choose) + special +/-__ mm if needed
Parent coil width: ____ mm; edge: mill edge / slit edge
Slit program (if any): finished width ____ mm; width tol ____; max burr ____; camber ____; ID 508/610 mm
Coil weight: __-__ MT max per coil (decoiler limit)
Surface: critical face free of rust, pits, deep scratches; photo reject criteria attached
Packing: VCI + waterproof film + edge guards + steel straps; packing photos before container seal
Documents: EN 10204 3.1 MTC (standard, grade, temper if ordered, heat no., chemistry, dimensions); packing list by coil
Quantity: 1 x 20GP (25-28 MT) trial acceptable; total ____ MT
Delivery: FOB / CIF ____; target dispatch 7-15 days for standard sizes
Inspection: SGS / BV / buyer PSI welcome before loading
Application note: steel furniture panels / OEM tube-and-sheet (not structural plate; not galvanized RFQ)Conclusion
Les achats SPCC mobilier echouent sur temper, huile, BMT/refente et packing ouverts—pas sur le mot SPCC. Gelez les symboles JIS G 3141, la preuve EN 10204 3.1 et la traçabilité heat pour les acheteurs.
Vous planifiez une commande ou besoin d une verification technique?
Si vous achetez bobine SPCC laminee a froid pour panneaux mobilier ou lignes OEM tube-tole:
- Devis technique rapide: commandes essai a partir de 1 x 20GP (25-28 MT) avec expedition 7-15 jours. Envoyez via formulaire RFQ.
- Assurance qualite: chaque commande avec EN 10204 3.1 Mill Test Certificates. Inspections SGS, BV, TUV bienvenues.
- Demandes urgentes: WhatsApp +86 151 5311 2221.
