What Are Stainless Steel Trim Profiles?

Stainless steel trim profiles are thin, shaped metal strips — L-angle, U-channel, V-channel, T-bar, or hat channel cross-sections — used to cover joints, protect edges, and create decorative borders in construction and interior design. You see them everywhere: tile edge trims, wall corner guards, glass partition frames, ceiling borders, elevator door surrounds, display cases, and hundreds of other applications.

Off-the-shelf stainless trims come in only a handful of standard sizes — 10x10mm, 20x20mm, 25x25mm — with fixed thickness of 0.5-0.8mm. When your project demands a different size, a different finish, or a different thickness, the only option is custom fabrication.

Five most common profile types

Profile	Cross-Section	Primary Use
L-angle	Two flanges at 90°	Wall corners, tile edges, structural brackets
U-channel	Three sides forming a channel	Glass clips, panel borders, guide rails
V-channel	Two flanges at acute or obtuse angle	Decorative lines, gap trims, reveal channels
T-bar	One horizontal + one vertical flange	Divider strips, expansion joint covers, zone separators
Hat channel	Omega/hat shape, 4 bends	Ceiling furring strips, panel substructure

Stock vs. Custom Profiles — When Do You Need Bespoke?

Limitations of stock profiles

Standard stainless trims sold at building material shops typically have these constraints:

Limited sizes: only a few common dimensions (10mm, 15mm, 20mm, 25mm)
Thin gauge only: mostly 0.5-0.8mm — too thin for industrial applications
Fixed finish: primarily 2B or hairline, no mirror or PVD options
Fixed length: 2.44m or 3m — wasteful if you need longer or shorter
Poor tolerances: mass-produced at low cost, inconsistent angles, 1-2mm dimensional variance

Advantages of custom-fabricated profiles

At Laser Tuan Thinh, our trim profile process is: laser cut a precision flat blank from sheet, then CNC bend it into shape. This method offers:

Any size — from ultra-small 5x5mm trims to large 100x100mm channels
Any thickness — from 0.5mm to 3mm (stainless 304/316)
Any finish — 2B, hairline #4, mirror #8, PVD color coating
Any length — up to 1,000mm per piece
CNC tolerances — dimensional ±0.1mm, angular ±0.5°
From 1 piece — no minimum order quantity

Technical Specifications by Profile Type

L-angle profiles

Two flanges at 90°. The most common trim type, used for wall corners, tile edges, and structural brackets.

Flange Size	Thickness	Material	Notes
10 x 10mm	0.5 - 1.0mm	304, 316	Tile edge trim, small decorative trim
15 x 15mm	0.8 - 1.2mm	304, 316	Wall corner, thin panel border
20 x 20mm	0.8 - 1.5mm	304, 316	Most common size
25 x 25mm	1.0 - 2.0mm	304, 316	Corner guard, structural bracket
30 x 30mm	1.0 - 2.0mm	304, 316	Industrial corner trim
40 x 40mm	1.2 - 2.5mm	304, 316	Medium-load structural bracket
50 x 50mm	1.5 - 3.0mm	304, 316	Structural bracket, shelf support
100 x 100mm	2.0 - 3.0mm	304, 316	Heavy structural trim

L-angles can also be fabricated with unequal flanges — for example, 15x25mm or 20x40mm — per your drawing requirements.

U-channel profiles

Three sides forming a channel. Used to clip glass panels, guide sliding panels, and cover joints.

Channel Size (width x depth)	Thickness	Material	Notes
10 x 10mm	0.5 - 1.0mm	304, 316	Thin glass trim, decorative border
12 x 12mm	0.8 - 1.0mm	304, 316	8-10mm glass clip
15 x 15mm	0.8 - 1.2mm	304, 316	Panel trim, lightweight slide rail
20 x 20mm	1.0 - 1.5mm	304, 316	Guide rail, thick glass clip
25 x 25mm	1.0 - 2.0mm	304, 316	12mm tempered glass clip
30 x 40mm	1.2 - 2.0mm	304, 316	Industrial guide rail
40 x 40mm	1.5 - 2.0mm	304, 316	Cable trough, utility channel
50 x 80mm	2.0 - 3.0mm	304, 316	Heavy-duty trough, structural

Note: U-channels require 2 bend lines. Channels that are too deep relative to their width cause bending difficulty — recommended maximum depth-to-width ratio is 3:1.

V-channel profiles

Two flanges forming angles from 15° to 170°. Used for decorative lines, reveal channels, and gap trims.

Opening Angle	Flange Width	Thickness	Application
15° - 30°	10 - 20mm	0.5 - 1.0mm	Decorative reveal lines, narrow gap trims
45°	15 - 30mm	0.8 - 1.5mm	Angled corner trims, interior decoration
60°	20 - 40mm	0.8 - 2.0mm	Decorative corner trim, countertop edging
90°	10 - 50mm	0.5 - 3.0mm	Same as L-angle — the most common
120° - 170°	20 - 50mm	0.8 - 2.0mm	Obtuse corner trim, roof edge, stair nosing

V-channels with acute angles (under 30°) require special bending tooling and thin stainless (under 1.0mm) to avoid outer surface cracking.

T-bar profiles

One horizontal flange plus one vertical flange at 90°. Used as divider strips, expansion joint covers, and zone separators.

Size (horizontal x vertical)	Thickness	Material	Notes
20 x 20mm	0.8 - 1.5mm	304, 316	Tile divider, small zone separator
25 x 25mm	1.0 - 1.5mm	304, 316	Standard expansion joint trim
30 x 30mm	1.0 - 2.0mm	304, 316	Ceiling grid divider, partition trim
40 x 40mm	1.2 - 2.0mm	304, 316	Structural T-bar
50 x 50mm	1.5 - 3.0mm	304, 316	Load-bearing T-bar

Note: T-bars fabricated from flat sheet require a special blank layout — the vertical flange is bent up from the center of the blank. Design must account for precise flat pattern width.

Surface Finish Options

Surface finish determines aesthetics, price, and durability. Options available at Laser Tuan Thinh:

Finish	Description	Price vs. 2B	Application
2B (mill finish)	Smooth matte surface from the steel mill	1x (baseline)	Structural, hidden applications
Hairline #4 (satin)	Unidirectional fine brush, satin sheen	1.1 - 1.3x	Interiors, elevators, facades — most popular
Mirror #8	Full mirror polish, reflective	1.3 - 1.6x	High-end decoration, showrooms, hotels
PVD gold	Vacuum ion plating, gold color	1.8 - 2.5x	Luxury interiors, signage
PVD rose gold	Vacuum ion plating, rose color	1.8 - 2.5x	Spas, hotels, modern interiors
PVD black	Vacuum ion plating, black color	1.8 - 2.5x	Minimalist interiors, contemporary architecture
Powder coating	Thermoset powder, any RAL color	1.3 - 1.8x	Outdoor, industrial, custom color matching

Important notes on finishes

Hairline and mirror surfaces must be bent using film-protected or polyurethane dies to prevent scratching. Fabrication cost is 10-20% higher than 2B.
PVD coating is applied after bending is complete. Bending after PVD causes the coating to crack and peel at the bend line.
Mirror #8 is extremely sensitive to fingerprints and scratches. Always apply PE protective film on both sides during transport and installation.
Stainless 316 has a higher base material cost than 304 (roughly 30-50% more), on top of any finish surcharge.

Applications in Practice

Construction and fit-out

Tile edge trim — L-angle or U-channel, hairline, 8-12mm height. Covers tile edges, creates clean borders between different cladding surfaces
Wall corner guards — L-angle 20x20 or 25x25, hairline or mirror. Protects wall corners from impact damage while adding a decorative element
Glass partition trim — U-channel sized to clip 8-12mm glass. Replaces aluminum frames for a more minimal look
Ceiling border trim — L-angle or T-bar, creates a clean division line between ceiling and wall

Interior design and decoration

Countertop and shelf edging — Thin L-angle or U-channel, mirror or PVD gold. Protects edges of wood or stone surfaces
Display case frames — U-channel for glass, hairline finish. Creates frameless-look glass cabinets
Elevator door surrounds — Large L-angle, hairline or mirror. Must withstand daily impact, requires stainless 1.5mm or thicker
Decorative wall lines — Thin V-channel or T-bar, PVD gold/rose gold. Creates accent lines on plain walls

Industrial and technical

Guide rails — U-channel, 2B or hairline, precision dimensions. Guides sliding panels, roller shutters
Expansion joint covers — T-bar or L-angle, 2B. Covers gaps between panels, allows thermal expansion
Electrical enclosure trim — L-angle or U-channel, 2B. Covers panel joints in electrical cabinets, dust sealing
Shelf support brackets — Large L-angle, 2B or hairline. Load-bearing corner brackets for racking systems

Our Fabrication Process

1. Flat pattern design (1-2 hours)

You send drawings (DXF/DWG/STEP/PDF) or dimensional descriptions. Our engineers calculate the precise flat pattern — determining the exact sheet width needed for cutting, accounting for K-factor variations by material and thickness. A 0.5mm error in flat pattern calculation leads to incorrect finished dimensions — this is the most critical step.

2. Laser cut flat blanks

Stainless sheet is laser cut into flat blanks matching the calculated pattern. Laser cutting produces clean edges with ±0.1mm tolerance, requiring no secondary edge finishing.

Stainless 304/316: cuts up to 12mm
Maximum sheet: 3,000 x 1,500mm
High throughput: hundreds of blanks per hour for thin-gauge trims

3. Deburr

Laser-cut edges are deburred by tumble machine (high volume) or hand grinding. Especially important for hairline and mirror trims — burrs cause surface scratching during bending.

4. CNC bend to shape

Flat blanks are formed on a CNC hydraulic press brake into the required profile. Specifications:

Angle tolerance: ±0.5°
Dimensional tolerance: ±0.1mm
Real-time angle sensors — automatic springback compensation for stainless
Hairline/mirror trims: film-protected or polyurethane dies to prevent marking

Each profile type requires a different number of bend lines:

L-angle: 1 bend
U-channel: 2 bends
T-bar: 2 bends (special blank layout)
Hat channel: 4 bends

5. Surface treatment (if required)

Hairline: brushed after bending (or pre-finished hairline sheet with anti-scratch dies)
Mirror: polished to mirror finish
PVD: sent to partner PVD coating facility

6. Protective film and packaging

Every trim piece is wrapped with PE protective film on both sides, bundled by length, with cardboard spacers between layers. Prevents scratching during transit.

Reference Pricing — Stainless Trim Profiles Per Meter

Prices in VND per linear meter, based on stainless 304, 2B finish, quantities of 50-200 pieces. Each piece under 1,000mm length.

L-angle

Size	0.8mm	1.0mm	1.5mm	2.0mm
10 x 10mm	15,000	18,000	25,000	—
15 x 15mm	18,000	22,000	30,000	38,000
20 x 20mm	22,000	26,000	35,000	45,000
25 x 25mm	25,000	30,000	42,000	55,000
30 x 30mm	30,000	36,000	50,000	65,000
40 x 40mm	—	45,000	60,000	80,000
50 x 50mm	—	—	75,000	95,000

U-channel

Size (width x depth)	0.8mm	1.0mm	1.5mm	2.0mm
10 x 10mm	22,000	28,000	38,000	—
15 x 15mm	28,000	34,000	45,000	55,000
20 x 20mm	32,000	40,000	52,000	68,000
25 x 25mm	38,000	46,000	62,000	80,000
30 x 30mm	45,000	55,000	72,000	95,000
40 x 40mm	—	65,000	85,000	110,000

T-bar

Size (h x v)	1.0mm	1.5mm	2.0mm
20 x 20mm	35,000	48,000	62,000
25 x 25mm	42,000	55,000	72,000
30 x 30mm	50,000	65,000	85,000
40 x 40mm	60,000	80,000	105,000

Finish surcharges

Finish	Surcharge vs. 2B
Hairline #4	+10 - 30%
Mirror #8	+30 - 60%
PVD gold/rose/black	+80 - 150%
Powder coating	+30 - 80%

Material surcharges

Material	vs. Stainless 304
Stainless 316	+30 - 50%
Stainless 430	-20 - 30%

Volume discounts

Quantity	Discount vs. Base Price
1 - 10 pcs	Base price + setup fee
20 - 50 pcs	10 - 15% off
100 - 200 pcs	20 - 30% off
500+ pcs	30 - 40% off

Prices above are reference only, excluding VAT. Actual pricing depends on your specific drawing, quantity, and finish requirements. Send your files for an accurate quotation.

Order Custom Trim Profiles in Binh Duong

We fabricate stainless trim profiles from 1 piece — no minimum order quantity. Our workshop is located in Thu Dau Mot, Binh Duong, delivering across the entire southern Vietnam region.

How to order

Send drawings or dimensions — DXF/DWG (2D), STEP (3D), or PDF with dimensions. Just specify: profile type, cross-section size, thickness, finish, length per piece, quantity
Receive quotation — within a few hours, covering material + fabrication + finish
Confirm and production — lead time 3-7 days depending on quantity and finish
Delivery — free within Binh Duong. HCMC, Dong Nai, Long An: reasonable shipping fees

Send your files via

See our full capabilities at CNC bending services or request a quote now.

Custom Stainless Steel Trim Profiles — U, V, L, T Channels