Introduction
Un RFQ que solo dice bobina SPCC laminada en frio, 0.8 x 1250, calidad comercial no congela una bobina comprable. Un laminador cotiza SPCC-SD con aceite ligero para gabinetes powder-coat. Otro envia tira full-hard que agrieta en esquinas de tubo. Un tercero pone DC01 en la proforma y SPCC en la etiqueta.
Este desglose ayuda a compradores de fabricas de muebles de acero y OEM tubo-chapa que compran bobina SPCC laminada en frio. Es guia de compra, no sustituto de la edicion pedida de JIS G 3141. Para cruce con DC01 / ASTM A1008 use SPCC vs DC01 vs ASTM A1008. Contexto HR vs CR: bobina laminada en caliente vs frio.
Los campos de linea de muebles que hacen incomparables tres cotizaciones SPCC
Quick technical summary:
Para bobina SPCC de muebles, congele grado JIS G 3141, temper (A / S / duro), espesor BMT con clase de tolerancia, ancho slit y borde, superficie para powder coat o pintura, aceite, embalaje anti-rayado y lineas EN 10204 3.1 antes de ordenar precios 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, recocido y aceite: que congela cada simbolo
Bajo JIS G 3141, calidad comercial es SPCC. Temper es simbolo aparte. Acabado en temper estandar: D (mate) o B (brillante). Ejemplo: SPCC-SD. Suministro por defecto aceitado salvo unoiling. Oxido/rayas en seco pueden no contar como defectos perjudiciales segun el texto normativo.
| 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 quimicos comerciales citados para SPCC (confirme edicion JIS G 3141). No upgrade silencioso a SPCD / SPCE. Vea guia 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 |
Espesor BMT, clase de tolerancia y ancho slit para tubo y marco
Las plantas mezclan bobina ancha para gabinetes/estantes y bobina slit para tubo, marcos y rieles. Ejemplo comercial: no basta escribir ±0.02 mm sin clase. Prefiera espesor pedido + clase JIS G 3141 A/B. Alinee con checklist tolerancia.
| 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 |
Clase de superficie para adhesion powder coat y pintura
La mayoria de muebles de acero se powder-coat o pintan tras conformado y soldadura. La clase de superficie es entrada de pintura, no un apodo de laminador.
| 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 |
Chequeo de comprador: aceite, rayas de embalaje y lineas MTC 3.1
Tres patrones de reclamo: (1) desajuste de aceite export vs linea powder; (2) roces sin edge guards en caras visibles; (3) MTC solo quimica sin temper/tamano. Use practica EN 10204 3.1 y plantilla 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 |
Bloque RFQ copiable para bobina SPCC de muebles de acero
Pegue y edite. No deje parentesis abiertos sin elegir.
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
Las compras SPCC para muebles fallan por temper, aceite, BMT/slit y packing abiertos—no por la palabra SPCC. Congele simbolos JIS G 3141, clases dimensionales, superficie powder y prueba EN 10204 3.1 y trazabilidad de heat.
Planea un pedido o necesita verificacion tecnica?
Si abastece bobina SPCC laminada en frio para paneles de muebles o lineas OEM tubo-chapa:
- Cotización técnica rápida: pedidos de prueba desde 1 x 20GP (25-28 MT) con despacho 7-15 dias. Envie via Formulario de cotización RFQ.
- Aseguramiento de calidad: cada pedido con EN 10204 3.1 Mill Test Certificates. Inspecciones SGS, BV, TUV bienvenidas.
- Consultas urgentes: WhatsApp +86 151 5311 2221.
