Mild Steel Perforated Sheet

Open Monday to Thursday 8:30 to 5, Friday 8:30 to 30117 963 4579 holes@kentons.biz

Perforated mild steel sheet

Our widest range, with round, square and slotted holes. Full sheets from stock, or cut, folded and powder coated to your drawing.

102 patterns0.5–10mm thickCut to sizeUK delivery

Get a price Call 0117 963 4579

Stocked mild steel patterns

Browse these round-hole patterns from our stocked mild steel range. Each product page lists the thicknesses and sheet sizes we supply; ask us to confirm stock and delivery when requesting a price.

3mm hole mild steel perforated sheet (R3 T5) 5mm hole mild steel perforated sheet (R5 T8)

Looking for perforated Corten (weathering steel)? We don’t stock it, but can often get it made to your spec. Email holes@kentons.biz or ring 0117 963 4579 to talk it through.

Material Mild steel

Hole shape Any

102 of 102 mild steel patterns

On the shelfMade to order, 5 to 7 days

	Pattern	Material	Hole	Pitch	Open area	Thicknesses (mm)	Availability
Round, staggered holes
	R0.5 T1.25Mild steel, 0.5mm, 1.25mm pitch, 15% open	Mild steel	0.5mm	1.25mm	15%	Thicknesses 0.5	Made to order
	R1.1 T2Mild steel, 1.1mm, 2mm pitch, 27% open	Mild steel	1.1mm	2mm	27%	Thicknesses 0.751	On the shelf
	R1.25 T2.4Mild steel, 1.25mm, 2.4mm pitch, 25% open	Mild steel	1.25mm	2.4mm	25%	Thicknesses 1	Made to order
	R1.25 T4Mild steel, 1.25mm, 4mm pitch, 9% open	Mild steel	1.25mm	4mm	9%	Thicknesses 1	Made to order
	R1.5 T2.5Mild steel, 1.5mm, 2.5mm pitch, 33% open	Mild steel	1.5mm	2.5mm	33%	Thicknesses 11.5	On the shelf
	R2 T3Mild steel, 2mm, 3mm pitch, 40% open	Mild steel	2mm	3mm	40%	Thicknesses 1	On the shelf
	R2 T3.5Mild steel, 2mm, 3.5mm pitch, 30% open	Mild steel	2mm	3.5mm	30%	Thicknesses 11.52	On the shelf
	R2.5 T3.5Mild steel, 2.5mm, 3.5mm pitch, 46% open	Mild steel	2.5mm	3.5mm	46%	Thicknesses 11.52	On the shelf
	R2.5 T4Mild steel, 2.5mm, 4mm pitch, 35% open	Mild steel	2.5mm	4mm	35%	Thicknesses 11.5	Made to order
	R3 T4Mild steel, 3mm, 4mm pitch, 51% open	Mild steel	3mm	4mm	51%	Thicknesses 11.5	On the shelf
	R3 T5Mild steel, 3mm, 5mm pitch, 33% open	Mild steel	3mm	5mm	33%	Thicknesses 11.523	On the shelf
	R4 T5Mild steel, 4mm, 5mm pitch, 58% open	Mild steel	4mm	5mm	58%	Thicknesses 11.5	On the shelf
	R4 T6Mild steel, 4mm, 6mm pitch, 40% open	Mild steel	4mm	6mm	40%	Thicknesses 11.523	On the shelf
	R5 T6Mild steel, 5mm, 6mm pitch, 63% open	Mild steel	5mm	6mm	63%	Thicknesses 1	On the shelf
	R5 T7Mild steel, 5mm, 7mm pitch, 46% open	Mild steel	5mm	7mm	46%	Thicknesses 11.21.52	On the shelf
	R5 T7.5Mild steel, 5mm, 7.5mm pitch, 40% open	Mild steel	5mm	7.5mm	40%	Thicknesses 11.5	Made to order
	R5 T8Mild steel, 5mm, 8mm pitch, 35% open	Mild steel	5mm	8mm	35%	Thicknesses 11.5235	On the shelf
	R5 T9Mild steel, 5mm, 9mm pitch, 28% open	Mild steel	5mm	9mm	28%	Thicknesses 135	Made to order
	R5 T10Mild steel, 5mm, 10mm pitch, 23% open	Mild steel	5mm	10mm	23%	Thicknesses 11.52	Made to order
	R5 T12Mild steel, 5mm, 12mm pitch, 16% open	Mild steel	5mm	12mm	16%	Thicknesses 1.523	Made to order
	R5 T14Mild steel, 5mm, 14mm pitch, 12% open	Mild steel	5mm	14mm	12%	Thicknesses 11.523	Made to order
	R6 T8Mild steel, 6mm, 8mm pitch, 51% open	Mild steel	6mm	8mm	51%	Thicknesses 11.53	Made to order
	R6 T9Mild steel, 6mm, 9mm pitch, 40% open	Mild steel	6mm	9mm	40%	Thicknesses 11.523	On the shelf
	R6 T12Mild steel, 6mm, 12mm pitch, 23% open	Mild steel	6mm	12mm	23%	Thicknesses 6	On the shelf
	R7 T10Mild steel, 7mm, 10mm pitch, 44% open	Mild steel	7mm	10mm	44%	Thicknesses 11.52	Made to order
	R7 T11Mild steel, 7mm, 11mm pitch, 37% open	Mild steel	7mm	11mm	37%	Thicknesses 11.523	Made to order
	R8 T11Mild steel, 8mm, 11mm pitch, 48% open	Mild steel	8mm	11mm	48%	Thicknesses 11.52	On the shelf
	R8 T12Mild steel, 8mm, 12mm pitch, 40% open	Mild steel	8mm	12mm	40%	Thicknesses 11.523456	On the shelf
	R8 T16Mild steel, 8mm, 16mm pitch, 23% open	Mild steel	8mm	16mm	23%	Thicknesses 11.5236	Made to order
	R10 T12Mild steel, 10mm, 12mm pitch, 63% open	Mild steel	10mm	12mm	63%	Thicknesses 11.52	Made to order
	R10 T12.7Mild steel, 10mm, 12.7mm pitch, 56% open	Mild steel	10mm	12.7mm	56%	Thicknesses 11.5	Made to order
	R10 T13Mild steel, 10mm, 13mm pitch, 54% open	Mild steel	10mm	13mm	54%	Thicknesses 11.52	Made to order
	R10 T13.5Mild steel, 10mm, 13.5mm pitch, 50% open	Mild steel	10mm	13.5mm	50%	Thicknesses 11.52	Made to order
	R10 T14Mild steel, 10mm, 14mm pitch, 46% open	Mild steel	10mm	14mm	46%	Thicknesses 11.52	Made to order
	R10 T15Mild steel, 10mm, 15mm pitch, 40% open	Mild steel	10mm	15mm	40%	Thicknesses 11.52345	On the shelf
	R10 T16Mild steel, 10mm, 16mm pitch, 35% open	Mild steel	10mm	16mm	35%	Thicknesses 11.5238	Made to order
	R10 T18Mild steel, 10mm, 18mm pitch, 28% open	Mild steel	10mm	18mm	28%	Thicknesses 11.5238	Made to order
	R12 T16Mild steel, 12mm, 16mm pitch, 51% open	Mild steel	12mm	16mm	51%	Thicknesses 11.52346	On the shelf
	R12 T20Mild steel, 12mm, 20mm pitch, 33% open	Mild steel	12mm	20mm	33%	Thicknesses 11.52310	On the shelf
	R15 T21Mild steel, 15mm, 21mm pitch, 46% open	Mild steel	15mm	21mm	46%	Thicknesses 11.5234	Made to order
	R15 T22Mild steel, 15mm, 22mm pitch, 42% open	Mild steel	15mm	22mm	42%	Thicknesses 1.523	Made to order
	R15 T24Mild steel, 15mm, 24mm pitch, 35% open	Mild steel	15mm	24mm	35%	Thicknesses 68	On the shelf
	R16 T20Mild steel, 16mm, 20mm pitch, 58% open	Mild steel	16mm	20mm	58%	Thicknesses 11.5	Made to order
	R18 T22Mild steel, 18mm, 22mm pitch, 61% open	Mild steel	18mm	22mm	61%	Thicknesses 11.52	Made to order
	R20 T25Mild steel, 20mm, 25mm pitch, 58% open	Mild steel	20mm	25mm	58%	Thicknesses 11.523	Made to order
	R20 T27Mild steel, 20mm, 27mm pitch, 50% open	Mild steel	20mm	27mm	50%	Thicknesses 1.52	Made to order
	R20 T28Mild steel, 20mm, 28mm pitch, 46% open	Mild steel	20mm	28mm	46%	Thicknesses 11.5234	On the shelf
	R25 T30Mild steel, 25mm, 30mm pitch, 63% open	Mild steel	25mm	30mm	63%	Thicknesses 11.523	Made to order
	R30 T35Mild steel, 30mm, 35mm pitch, 67% open	Mild steel	30mm	35mm	67%	Thicknesses 11.523	Made to order
	R30 T40Mild steel, 30mm, 40mm pitch, 51% open	Mild steel	30mm	40mm	51%	Thicknesses 11.5234	On the shelf
Round, in line holes
	R4.5 U15Mild steel, 4.5mm, 15mm pitch, 7% open	Mild steel	4.5mm	15mm	7%	Thicknesses 1.5	On the shelf
	R5 U10Mild steel, 5mm, 10mm pitch, 20% open	Mild steel	5mm	10mm	20%	Thicknesses 11.523	Made to order
	R5 U15Mild steel, 5mm, 15mm pitch, 9% open	Mild steel	5mm	15mm	9%	Thicknesses 11.52	Made to order
	R5 U25Mild steel, 5mm, 25mm pitch, 3% open	Mild steel	5mm	25mm	3%	Thicknesses 11.523	Made to order
	R8 U17.32Mild steel, 8mm, 17.32mm pitch, 17% open	Mild steel	8mm	17.32mm	17%	Thicknesses 11.523	Made to order
	R10 U15Mild steel, 10mm, 15mm pitch, 35% open	Mild steel	10mm	15mm	35%	Thicknesses 11.523	Made to order
	R10 U21Mild steel, 10mm, 21mm pitch, 18% open	Mild steel	10mm	21mm	18%	Thicknesses 11.523	Made to order
	R10 U26Mild steel, 10mm, 26mm pitch, 12% open	Mild steel	10mm	26mm	12%	Thicknesses 11.523	Made to order
	R12 U27.72Mild steel, 12mm, 27.72mm pitch, 15% open	Mild steel	12mm	27.72mm	15%	Thicknesses 11.523	Made to order
	R15 U36.38Mild steel, 15mm, 36.38mm pitch, 13% open	Mild steel	15mm	36.38mm	13%	Thicknesses 11.523	Made to order
	R20 U48.5Mild steel, 20mm, 48.5mm pitch, 13% open	Mild steel	20mm	48.5mm	13%	Thicknesses 11.523	Made to order
Square holes
	C3 U5Mild steel, 3mm, 5mm pitch, 36% open	Mild steel	3mm	5mm	36%	Thicknesses 1	On the shelf
	C4 U7Mild steel, 4mm, 7mm pitch, 33% open	Mild steel	4mm	7mm	33%	Thicknesses 11.5	Made to order
	C5 U7Mild steel, 5mm, 7mm pitch, 51% open	Mild steel	5mm	7mm	51%	Thicknesses 11.52	Made to order
	C5 U7.5Mild steel, 5mm, 7.5mm pitch, 44% open	Mild steel	5mm	7.5mm	44%	Thicknesses 11.52	Made to order
	C5 U8Mild steel, 5mm, 8mm pitch, 39% open	Mild steel	5mm	8mm	39%	Thicknesses 11.52	On the shelf
	C5 U16Mild steel, 5mm, 16mm pitch, 10% open	Mild steel	5mm	16mm	10%	Thicknesses 11.523	Made to order
	C6 U9Mild steel, 6mm, 9mm pitch, 44% open	Mild steel	6mm	9mm	44%	Thicknesses 11.52	On the shelf
	C7 U10Mild steel, 7mm, 10mm pitch, 49% open	Mild steel	7mm	10mm	49%	Thicknesses 1	Made to order
	C8 U10Mild steel, 8mm, 10mm pitch, 64% open	Mild steel	8mm	10mm	64%	Thicknesses 11.52	On the shelf
	C8 U11Mild steel, 8mm, 11mm pitch, 53% open	Mild steel	8mm	11mm	53%	Thicknesses 11.52	Made to order
	C8 U12Mild steel, 8mm, 12mm pitch, 44% open	Mild steel	8mm	12mm	44%	Thicknesses 11.523	On the shelf
	C8 U16Mild steel, 8mm, 16mm pitch, 25% open	Mild steel	8mm	16mm	25%	Thicknesses 11.523	Made to order
	C8 U24Mild steel, 8mm, 24mm pitch, 11% open	Mild steel	8mm	24mm	11%	Thicknesses 11.523	Made to order
	C9.2 U34Mild steel, 9.2mm, 34mm pitch, 7% open	Mild steel	9.2mm	34mm	7%	Thicknesses 11.52	Made to order
	C9.2 U37.98Mild steel, 9.2mm, 37.98mm pitch, 6% open	Mild steel	9.2mm	37.98mm	6%	Thicknesses 1.52	Made to order
	C9.5 U13.33Mild steel, 9.5mm, 13.33mm pitch, 51% open	Mild steel	9.5mm	13.33mm	51%	Thicknesses 1.52	Made to order
	C10 U12Mild steel, 10mm, 12mm pitch, 69% open	Mild steel	10mm	12mm	69%	Thicknesses 11.52	On the shelf
	C10 U14Mild steel, 10mm, 14mm pitch, 51% open	Mild steel	10mm	14mm	51%	Thicknesses 11.523	On the shelf
	C10 U15Mild steel, 10mm, 15mm pitch, 44% open	Mild steel	10mm	15mm	44%	Thicknesses 11.5234	On the shelf
	C10 U20Mild steel, 10mm, 20mm pitch, 25% open	Mild steel	10mm	20mm	25%	Thicknesses 11.523	Made to order
	C10 U30Mild steel, 10mm, 30mm pitch, 11% open	Mild steel	10mm	30mm	11%	Thicknesses 11.523	Made to order
	C10 U38Mild steel, 10mm, 38mm pitch, 7% open	Mild steel	10mm	38mm	7%	Thicknesses 11.523	Made to order
	C15 U20Mild steel, 15mm, 20mm pitch, 56% open	Mild steel	15mm	20mm	56%	Thicknesses 11.523	On the shelf
	C15 U40Mild steel, 15mm, 40mm pitch, 14% open	Mild steel	15mm	40mm	14%	Thicknesses 11.523	Made to order
	C15 U60Mild steel, 15mm, 60mm pitch, 6% open	Mild steel	15mm	60mm	6%	Thicknesses 11.523	Made to order
	C20 U23Mild steel, 20mm, 23mm pitch, 76% open	Mild steel	20mm	23mm	76%	Thicknesses 1.52	Made to order
	C20 U24Mild steel, 20mm, 24mm pitch, 69% open	Mild steel	20mm	24mm	69%	Thicknesses 1.52	Made to order
	C20 U25Mild steel, 20mm, 25mm pitch, 64% open	Mild steel	20mm	25mm	64%	Thicknesses 11.523	Made to order
	C20 U28Mild steel, 20mm, 28mm pitch, 51% open	Mild steel	20mm	28mm	51%	Thicknesses 11.523	Made to order
	C20 U40Mild steel, 20mm, 40mm pitch, 25% open	Mild steel	20mm	40mm	25%	Thicknesses 1.52	Made to order
	C20 U50Mild steel, 20mm, 50mm pitch, 16% open	Mild steel	20mm	50mm	16%	Thicknesses 11.523	Made to order
	C25 U30Mild steel, 25mm, 30mm pitch, 69% open	Mild steel	25mm	30mm	69%	Thicknesses 11.523	Made to order
	C25 U35Mild steel, 25mm, 35mm pitch, 51% open	Mild steel	25mm	35mm	51%	Thicknesses 11.523	Made to order
	C25 U70Mild steel, 25mm, 70mm pitch, 13% open	Mild steel	25mm	70mm	13%	Thicknesses 11.523	Made to order
	C30 U35Mild steel, 30mm, 35mm pitch, 73% open	Mild steel	30mm	35mm	73%	Thicknesses 11.523	Made to order
	C30 U70Mild steel, 30mm, 70mm pitch, 18% open	Mild steel	30mm	70mm	18%	Thicknesses 11.523	Made to order
	C40 U60Mild steel, 40mm, 60mm pitch, 44% open	Mild steel	40mm	60mm	44%	Thicknesses 11.523	Made to order
	C50 U100Mild steel, 50mm, 100mm pitch, 25% open	Mild steel	50mm	100mm	25%	Thicknesses 11.523	Made to order
Slotted holes
	LR2x20Mild steel, 2 x 20mm slot, 33% open	Mild steel	2 x 20mm slot	–	33%	Thicknesses 2	Made to order
	LR3x20Mild steel, 3 x 20mm slot, 36% open	Mild steel	3 x 20mm slot	–	36%	Thicknesses 1.5	On the shelf
	LR5x20Mild steel, 5 x 20mm slot, 44% open	Mild steel	5 x 20mm slot	–	44%	Thicknesses 11.52	On the shelf

Can’t see the pattern you need, or not sure which to pick? Tell us what it’s for.Ask us

Thickness and sheet sizes

Choosing the
right sheet

The hole pattern decides how the sheet looks, while the thickness and sheet size affect its strength, weight and how much cutting is needed. If you’re not sure, tell us what it’s for and we’ll suggest one.

Thickness

Mild steel patterns come in 0.5mm to 10mm. Most of what we keep on the shelf is 1mm to 3mm.

Each pattern page lists every thickness it comes in and which ones are on the shelf.

0.5

0.75

1.2

1.5

Sheet edges drawn to scale. Dark bars are the thicknesses we hold most often.

Sheet sizes

Sheets come in three sizes, though not every pattern comes in all three. Buy them whole, as part sheets, or cut to your exact sizes.

Fewer cuts usually means less waste, so it’s worth telling us your finished sizes up front.

The three sheet sizes, drawn to the same scale.

Open area

Open area is how much of the sheet is holes. More open area lets more light, air and sound through; less keeps the sheet stiffer and more private.

The same 5mm hole can look very different depending on the pitch.

Reading a code

R5 T8 means 5mm round holes on an 8mm staggered pitch. C means a square hole, U means holes in straight rows, and LR is a slot.

How pattern codes work

Services

Cut, formed and finished

Buy full sheets, or have us take them further. Tell us what you need and we’ll price it together.

Round hole perforated balustrade — Round hole balustrade panels

Cut to size →

Part sheets and exact sizes, as well as full sheets.

Folded and rolled →

Trays, panels and curved sections made to your drawing.

Powder coated →

Finished in any of 150 RAL colours.

Edged →

Profile edging to finish cut edges cleanly.

Download the Stock Guide

Every perforated sheet we keep, laid out by material with hole size, pitch, open area and thickness.

Perforated sheet starts on page 4. Updated October 2026. 44 pages, PDF, 4.8MB.

Download PDF

Mild steel

FAQ

Can’t see your question? Ask us. Our sales team can check stock and sizes.

Call 0117 963 4579 Email us

What thicknesses do you hold?

Most mild steel patterns we keep on the shelf are 1mm, 1.5mm, 2mm or 3mm. The full range runs from 0.5mm to 10mm. Each pattern page lists every thickness and which ones are on the shelf.

What sheet sizes are available?

Stock sheets are 2000 x 1000mm or 2500 x 1250mm. We can get 3000 x 1500mm in to order, usually in 5 to 7 days. We can cut part sheets or exact sizes from any of them.

Is mild steel the same as pre-galvanised?

No. Pre-galvanised sheet has a zinc coating applied before it is perforated. Mild steel is plain steel, and is often powder coated or painted once it has been cut and formed.

How quickly can I have it?

Full sheets from stock go out the next working day across the UK. Cut pieces and made-to-order patterns get a delivery date when we price them, usually 5 to 7 days.

Can you cut it to size?

Yes. Send us the sizes and quantities, or a drawing, and we will price the cutting with the material.

Do you have a minimum order?

No minimum on stock sheets. Ring or email the sales office and we can check stock and price it.

Get a price

Tell us the pattern, thickness, sizes and quantity, or attach a drawing. We’ll come back with a price and a delivery date, usually the same working day.

Phone

0117 963 4579

holes@kentons.biz

Address

25/26 Barnack Trading Centre
Novers Hill, Bristol BS3 5QE

Opening hours

Monday to Thursday 8:30 to 5
Friday 8:30 to 3

Mild Steel Perforated Sheet

Perforated mild steel sheet

Stocked mild steel patterns

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