1. No.1 Finish (Hot Rolled & Annealed Pickled Surface)
Full English Definition
Hot rolled stainless steel coil, after high-temperature annealing and acid pickling to remove black oxide scale, matte silvery-grey uniform surface without rolling lines.
Features
Thick oxide skin removed, rough matte texture, flatness general, slight uneven surface grain, cannot be used for decorative appearance directly.
Thickness Range
3.0mm ~ 14.0mm
Main Applications
Industrial structural parts, pressure vessels, chemical equipment, pipeline flanges
Heat exchangers, furnace internal components, mining machinery parts
Base material for further cold rolling to make 2B/BA/No.4 finish
Chemical anti-corrosion containers, boiler accessories
2. 2B Finish (Cold Rolled, Annealed Pickled, Skin Pass Mill Finish)
Full English Definition
Cold rolled stainless steel coil, soft annealed, pickled, then light skin pass rolling with smooth dull rolls; semi-matte silver surface with fine uniform grain, the most universal standard finish.
Features
Balanced corrosion resistance, formability, polishability; moderate surface roughness, low production cost, can be further polished to No.4/HL/8K.
Thickness Range
0.3mm ~ 6.0mm
Main Applications
Widest general-purpose grade
Kitchen appliances: refrigerator liners, washing machine shells, sink base material
Food processing machinery, catering equipment, water tank, water pipe
Architectural auxiliary parts, elevator base plate, railings blank
Medical equipment shells, chemical light anti-corrosion parts
Hardware stamping parts, auto interior components
3. BA Finish (Bright Annealed Finish)
Full English Definition
Cold rolled stainless steel coil under protective gas bright annealing without acid pickling; smooth mirror-silver bright surface, fine grain, no oxide layer.
Features
Brighter than 2B, uniform soft luster, better forming performance, slight reflectivity, no pickling trace.
Thickness Range
0.2mm ~ 3.0mm
Main Applications
High-end kitchenware: stainless steel pots, pans, baking trays, cutlery base
Electronic components, battery shells, precision stamping parts
Decorative thin coils, high-grade sanitary ware accessories
Automotive decorative strips, small precision hardware
4. No.4 Finish (Standard Brushed Finish / Short Line Brushed)
Full English Definition
2B/BA base coil processed with short uniform linear abrasive brushing; fine short horizontal satin hairline texture, uniform matte silver luster.
Features
Classic decorative surface, fingerprint resistant to a certain extent, consistent brushed grain, moderate gloss.
Thickness Range
0.4mm ~ 8.0mm
Main Applications
Elevator cabin panels, elevator door cladding
Kitchen cabinet panels, commercial kitchen countertops
Architectural door frames, window trim, guardrail decorative plates
Food equipment exterior panels, medical device appearance covers
Decorative hardware, sanitary partition panels
5. HL Finish (Hairline Finish / Long Line Brushed Finish)
Full English Definition
Long continuous linear abrasive brushing finish, longer flowing grain lines than No.4, smooth continuous silk texture.
Features
Long uniform flow lines, stronger metal texture, higher decorative grade than No.4.
Thickness Range
0.4mm ~ 10.0mm
Main Applications
High-end architectural decoration: building curtain wall, lobby decorative panels
Luxury elevator interior, stainless steel handrail surface
High-grade commercial equipment, hotel decorative partitions
Luxury home appliance surface panels, stainless steel door sheets
6. 8K Finish (Mirror Finish / Super Mirror Polished)
Full English Definition
Multi-step fine polishing on 2B base coil with abrasive buffing to achieve high reflective mirror surface, also called mirror stainless steel.
Subtypes: 6K (half mirror), 8K (standard mirror), 12K (ultra mirror)
Features
High light reflectivity like glass mirror, ultra-smooth surface, clear imaging, high decorative value; easy to leave fingerprints.
Thickness Range
0.3mm ~ 6.0mm
Main Applications
Architectural decoration: mirror wall, ceiling decorative panels, mall interior cladding
Signage, advertising metal logos, decorative artwork
Elevator mirror panels, luxury hotel decorative engineering
Solar reflective base material, optical equipment accessories
Decorative mold inserts, high-end cosmetic display racks
7. SB Finish (Satin Bright Finish / Matte Satin Finish)
Full English Definition
Fine micro-blasting surface treatment on cold rolled coil, uniform foggy matte silver without obvious brushing lines.
Features
Uniform soft matte effect, excellent anti-fingerprint performance, low light reflection, soft metal texture.
Thickness Range
0.5mm ~ 5.0mm
Main Applications
High-end elevator interior, luxury cabinet panels
Medical equipment appearance, laboratory equipment shell
High-grade electronic product casings, precision instrument panels
Hotel bathroom decorative plates, silent decorative engineering
8. Embossed Finish (Pattern Embossed Stainless Steel Coil)
Full English Definition
Surface embossing treatment with patterned rollers on 2B/BA base coil, with regular concave-convex texture (diamond, linen, leather, water ripple).
Features
Three-dimensional texture, scratch concealment, anti-slip performance, unique decorative effect.
Main Applications
Anti-slip floor plates, stair treads, transport vehicle floor
Decorative wall panels, cabinet door panels, refrigerator decorative sheets
Anti-collision panels for public facilities, anti-slip mechanical workbenches
9. PVC Coated / Film Laminated Finish
Full English Definition
2B/HL/8K stainless steel coil covered with transparent or colored PVC protective film to prevent scratch and fingerprint during processing & transportation.
Features
Temporary protective layer, peeled off after installation; avoid surface damage during cutting, bending, polishing.
Main Applications
All decorative stainless steel coils (No.4, HL, 8K) for construction, elevator, kitchen decoration industry
10. Colored Stainless Steel Finish (PVD Coated Decorative Surface)
Full English Definition
Based on 8K/HL/No.4 substrate, vacuum PVD ion plating to form colored metal film (gold, rose gold, black titanium, bronze, champagne gold).
Features
Rich metal color, wear-resistant, corrosion resistant, high-end decorative effect.
Main Applications
Luxury hotel decoration, high-end villa door panels, elevator color decorative plates, luxury hardware accessories
Quick Comparison Table (English Version)
| Surface Code | English Full Name | Core Characteristic | Core Industry Usage |
| No.1 | Hot Rolled Pickled | Hot rolled matte thick plate | Chemical vessel, structural base |
| 2B | Cold Rolled Annealed Skin Pass | Universal semi-matte base | All general stamping & blank material |
| BA | Bright Annealed | Soft bright silver without pickling | Precision stamping, kitchenware blank |
| No.4 | Short Hairline Brushed | Short fine satin lines | Elevator, kitchen cabinet |
| HL | Long Hairline Finish | Long continuous flow grain | High-end building decoration |
| 8K | Mirror Polished Finish | High reflective mirror surface | Luxury decorative wall, signage |
| SB | Satin Blast Finish | Foggy matte anti-fingerprint | Medical & high-end electronic shell |
| Embossed | Pattern Embossed | Concave-convex anti-slip texture | Anti-slip floor, decorative cabinet |
| PVD Color | PVD Coated Color Finish | Multi-color metal coating | Luxury architectural decoration |
Key Industry Terminology Notes (For Foreign Trade Documents)
Coil: stainless steel coil 不锈钢卷板
Sheet: stainless steel sheet 不锈钢平板
Substrate: base material 基板
Skin Pass Mill: tension leveling & light rolling 精整 / 光整
Bright Annealing (BA): protective atmosphere annealing 光亮退火
Hairline brushing: abrasive belt grinding 砂带拉丝
Mirror polishing: buffing polishing 镜面抛光
PVD coating: physical vapor deposition 真空镀钛 / 着色
Pickling: acid descaling 酸洗
Anti-fingerprint treatment: AF finish 防指纹处理
