Three materials, one line. Plain mild steel sheet where the surface will be painted or hidden; hot-dip galvanized where it has to stand weather bare; and pre-painted galvanized — PPGI — where the finish is the finish, delivered in colour and needing nothing on site.

All three start as coil and are cut to length or fed straight into the roll-former. Flat sheet leaves as 4×8 ft as standard, with 1250 × 2500 and 1500 × 3000 mm cut to order. Profiled sheet is rolled to any length the transport will take, which is what removes end laps from a long roof run.

Two things decide what a sheet actually costs you, and neither is the headline thickness. On galvanized, it is the zinc: ASTM A653 and EN 10346 both define the ordered thickness as INCLUDING the coating, so a 0.50 mm G90 sheet is carrying about 0.46 mm of steel. On profiled sheet, it is cover width rather than overall width — the difference is lap you pay for and do not cover with. Both are set out in the charts below.

Applications

Roofing sheets and wall cladding
Door and window frames
Heavy duty shelving and racking
Machine guarding and frames
Electrical cabinets and enclosures
Storage tanks and bins
Shipping container panels
Industrial sheds and warehouses
Ducting and ventilation
Partitions, false ceilings and trunking
Furniture and white goods pressings
General fabrication and pressing

Sectors supplied

Construction
Pre-engineered buildings
Material handling and storage
Electrical equipment
HVAC
Appliance manufacture
Agriculture

At a glance

Size range: 0.12 mm to 20 mm, widths to 1500 mm
Grades: MS — CS Type B, DC01, SPCC, S235JR, GI — DX51D+Z, SGCC, CS Type B, PPGI — CGCC, DX51D+Z, S220GD
Standards: ASTM A1011 / A1008, ASTM A653/A653M, EN 10346, EN 10169, JIS G3302, JIS G3312, IS 277, ISO 9001

Salient features

Plain, galvanized and colour-coated from one line
Zinc from Z40 to Z275, quoted total both faces
PPGI in polyester, SMP, HDP and PVDF to RAL colours
Corrugated, trapezoidal, IBR and tile profiles
Profiled sheet rolled to any length in one piece
Coil or cut length, slit to width on order

Checked on every coil

Base metal thickness
Zinc coating mass
Paint film thickness
Width
Coil weight

Supply and packing

Coil or cut length
Profiled sheet rolled to any length in one piece
Coil inside diameter 508 mm
Interleaved and edge-protected
Strapped on timber bearers

Specifications

Sizes and weights

Figures as published in our catalogue. Tolerances are held to the standard named on each table.

MS Sheet — thickness and weight

ASTM A1011 / A1008, JIS G3131 / G3141, EN 10025-2 / EN 10130

MS Sheet — thickness and weight — ASTM A1011 / A1008, JIS G3131 / G3141, EN 10025-2 / EN 10130
Thickness mm	Gauge SWG	Weight
Thickness mm	Gauge SWG	kg/m²	kg per 4×8 ft sheet
0.50	25	3.93	11.66
0.60	23	4.71	14.00
0.80	21	6.28	18.66
1.00	19	7.85	23.33
1.20	18	9.42	28.00
1.50	17	11.78	34.99
2.00	14	15.70	46.66
2.50	12	19.63	58.32
3.00	11	23.55	69.99
4.00	8	31.40	93.32
5.00	6	39.25	116.65
6.00	4	47.10	139.98
8.00		62.80	186.64
10.00		78.50	233.29
12.00		94.20	279.95
14.00		109.90	326.61
16.00		125.60	373.27
18.00		141.30	419.93
20.00		157.00	466.59

Thickness 0.50 mm to 20 mm: cold rolled 0.50 mm to 3.00 mm, hot rolled 1.5 mm and heavier. Weights are for plain uncoated steel. Sheet weight is for a 4×8 ft (1219 × 2438 mm) sheet — pro-rata for 1250 × 2500 mm or 1500 × 3000 mm.

GI Sheet — thickness and weight

ASTM A653/A653M, EN 10346, JIS G3302, IS 277

GI Sheet — thickness and weight — ASTM A653/A653M, EN 10346, JIS G3302, IS 277
Thickness mm	Gauge SWG	Weight
Thickness mm	Gauge SWG	kg/m²	kg per 4×8 ft sheet
0.12	40	0.94	2.80
0.16	38	1.26	3.73
0.20	36	1.57	4.67
0.25	33	1.96	5.83
0.30	31	2.36	7.00
0.40	27	3.14	9.33
0.50	25	3.93	11.66
0.60	23	4.71	14.00
0.80	21	6.28	18.66
1.00	19	7.85	23.33
1.20	18	9.42	28.00
1.50	17	11.78	34.99
2.00	14	15.70	46.66

Weights are BASE STEEL only. Note that ASTM A653 and EN 10346 both define the ordered thickness as INCLUDING the zinc — a 0.50 mm G90 sheet carries about 0.46 mm of steel. Order to ASTM A653 Supplementary Requirement S1 if you need the thickness to mean base metal. Zinc adds its own coating mass on top: Z275 = 275 g/m² = 0.275 kg/m² across both faces.

PPGI Sheet — thickness and weight

EN 10169, ASTM A755/A755M, JIS G3312, IS 14246

PPGI Sheet — thickness and weight — EN 10169, ASTM A755/A755M, JIS G3312, IS 14246
Thickness mm	Gauge SWG	Weight
Thickness mm	Gauge SWG	kg/m²	kg per 4×8 ft sheet
0.12	40	0.94	2.80
0.16	38	1.26	3.73
0.20	36	1.57	4.67
0.25	33	1.96	5.83
0.30	31	2.36	7.00
0.35	29	2.75	8.17
0.40	27	3.14	9.33
0.45	26	3.53	10.50
0.50	25	3.93	11.66
0.60	23	4.71	14.00
0.80	21	6.28	18.66
1.00	19	7.85	23.33

Weights are base metal thickness (BMT), excluding zinc and paint. Total coated thickness (TCT) runs 0.04–0.09 mm above BMT once the zinc and the paint system are counted — always confirm which basis a quotation is written on.

Roll-formed profiles — cover and rib

Profiles to the mill’s own die set

Roll-formed profiles — cover and rib — Profiles to the mill’s own die set
Profile	Width		Rib depth mm	Rib pitch mm
Profile	Cover mm	Overall mm	Rib depth mm	Rib pitch mm
Corrugated 76/18	762	914	18	76
Trapezoidal 25/210	840	900	25	210
Trapezoidal 30/200	1000	1060	30	200
IBR 37/171	686	762	37	171
Trapezoidal 45/250	1000	1070	45	250
Tile profile 28/200	1000	1090	28	200

Order on COVER width, never overall width. Cover is what one sheet actually covers once side-lapped; the difference is the lap you are paying for but not covering with. Corrugated cover assumes a two-corrugation side lap, which is what high-wind and monsoon exposure calls for — a one-corrugation lap gains about 76 mm of cover and loses weather resistance.

Gallery