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Galvanised Coils/Sheets (Plain/Corrugated) |
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| G.P.Coil |
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Commercial Quality |
Drawing Quality |
| Thickness Range(mm) |
0.14-0.80 |
0.30-0.80 |
| Width (mm) |
400-1000 |
400-1000 |
| Zinc Coating (gsm) |
80-275 |
80-275 |
| Coil ID (mm) |
508 |
508 |
| Coil Weight (max) |
5.0 MT |
5.0 MT |
| Bend Test at 180 deg Angle |
0 t |
0 t |
| Coil Winding |
staggered |
staggered |
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| GP Sheet |
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Commercial Quality |
Drawing Quality |
| Thickness Range(mm) |
0.14-0.80 |
0.30-0.80 |
| Width (mm) |
400-1000 |
400-1000 |
| Length (mm) |
1800-4880 |
1800-4880 |
| Zinc Coating (gsm) |
80-275 |
80-275 |
| Bend Test at 180 deg Angle |
0 t |
0 t |
| Packet Weight |
2.0 to 4.5 MT |
1.5 to 4.5 MT |
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| GC Sheet |
| Thickness Range(mm) |
0.14-0.70 |
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| Width (mm) |
665-900 |
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| Length (mm) |
1600-4880 |
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| Zinc Coating (gsm) |
80-275 |
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| Packet Weight |
2.0 to 4.5 MT |
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| Dimensional Tolerances |
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| Thickness (mm) |
+ 0.02 |
| Width (mm) |
-0 , +5 |
| Length (mm) |
-0 , +5 |
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| Special Features |
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| 1. Online Skin Pass facility to produce GPSP coils. |
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| 2.GP Slit Coils |
20 mm and above |
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| 3. Tension Levelled |
THK-- 0.20-0.80 mm |
Width-- up to 1000 |
| 4. Spangle |
Regular Spangle, Small & Bright Finish |
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| 5. Surface Treatment |
Chromated & Unoiled, Unchromated & Unoiled |
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| 6. Packing |
Standard Packing |
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| 7. Marking of Coils |
Identification with paper sticker at ID and side faces of the coils |
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| 8. Marking on Packets |
With paper sticker at width side |
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| APPLICATIONS |
| Galvanized Sheets are used extensively in various applications.
Some of the common uses are: - |
Agriculture |
Grain Silos, Sprayers, Ghamellas, Pans, Feeding Troughs, etc. |
Automobile |
Cars, Busses, Truck Bodies, Undercarriage Work, Air & Oil Filters, Fuel & Oil Tanks, Exhaust Pipes |
Construction |
Roofing, Side Walls, Partitions, Panels, Valley Gutters, Louvers, False Ceilings, Partition Walls and Ducks, Rolling Shutters, Highway Bumpers, Slotted Angles, Paint-Coated Products. |
Domestic |
Trunks, ice Boxes, Household Machines, Tubs, Pails, Buckets, Storage Bins, Water Tanks, Washing Machines, Bathroom Doors, etc. |
Electrical Appliances |
Air-conditioners, Coolers, Refrigerators. Freezers, Electrical Panels, Decorative Lamps |
Furniture & Fixtures |
Desks, Lockers, Racks, Lightweight Chairs, Colour Coating, PVC Coating. |
Industry |
Ducting, Drums/Barrels, Containers, Thermal Cladding, Air-Conditioning Ducts, Railway Coaches and other Applications |
Outdoor |
Sign-boards, Hoardings, Road Sings. |
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VIL's Colour Coating Plant is fully imported unit, with the latest technology having 140 metres length and designed with the latest Two Coat Two Bake System, with an accumulator at each end. The Primer and Top Coat are applied in the same run, leading to Zero Wastage of Coils. Two Reverse Roller Coating Machines ensure uniformity, quality and performance of the paint system. Each machine is capable of coating the front and back, and can be used to coat four colours in one run to provide Two Side Coating (C2S) for special customer requirements.
The distinct advantage of the coil coating process is its ability to provide a uniform coating with very reproducible thickness, colour and glass, in order to achieve better life and aesthetics.
| Pre-painted Aluminium-Alloy Aa3105/Aa3003/IS31000 |
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Thickness Range |
0.30 mm to 1.00 mm |
Width |
1220 mm or any combination of slit width |
Coil Weight |
Up to 4 MT |
Coil ID |
508 mm |
Coating |
5 micron of primer and 20 micron of top coat on top side. 5 micron of service coat on back side. |
Temper |
H 16 |
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| Pre-painted Galvanised Steel-ASTM653 |
Zinc Coating |
120 gsm to 275 gsm (LFQ) |
Thickness Range |
0.30 mm to 0.80 mm |
Width |
1220 mm or any combination of slit width |
Coil Weight |
Up to 6 MT |
Coil ID |
508 mm |
Coating |
5 micron of primer and 20 micron of top coat on top side. 5 micron of service coat on back side. |
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| Pre-painted Galvalume-Zincalum 1 Specification |
C2S-Colour 2 Sides |
Four different coats in one run
Double side coating (C2S) with primer and top coat on both sides of the coil |
Finish Options |
Various types of finish options such as wood grain texture, etc |
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| Quality Testing Specifications |
Test Undertaken |
Standard Data |
Remarks |
Organic Coating Thickness |
Top Coat |
20-25 micron |
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Back Coat |
5-10 micron |
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Specular Gloss @ 60 deg |
20-95% |
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Pencil Hardness |
2 |
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Scratch Resistance |
1500 gms |
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Flexibility |
Reverse Impact |
40”/lbs |
No cracks |
Bend Test |
2 T |
Can go up to 1 T |
Erichsen Test |
>5 mm |
No tape off |
Cross Hatch |
Pass |
No Tape off |
Corrosion Resistance |
Salt Spray |
500 hrs |
Polyester |
Salt Spray |
1000 hrs |
PVDF |
Humidity |
1000 hrs |
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QUV Weatherometer |
1000 hrs |
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Acid Resistance |
24 hrs |
5% HCL Solution for Steel |
Alkali Resistance |
24 hrs |
5% NaOH Solution |
Doublr Rub Test |
50 Double Rub of MEK |
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Boiling Water |
1 hr |
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| Colour Matching |
Vardhman can offer various colours matching customers' requirements in the shortest period of time. The in-house colour computer and paint tinting system is designed to meet clients' needs. Vardhman also undertakes the matching of colours even for small lots and specific requirements. |
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| Paint System |
VIL can offer any paint system as desired by customers. Currently, the company is offering Polyseter, PVDF, Plastisol and Polyamides paint systems. |
Ployester
A more economic paint system used in general roofing, cladding and interiors, in normal atmospheric conditions.
PVDF
Paint system used for better corrosion/UV/Fading resistence. Recommended in severe atmospheric environments. |
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| Colour Chart |
Vardhman supplies shades conforming to RAL shades standards, and any other colour which can be matched by using its colour matching system. |
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| SPECIFICATION OF CRCA MATERIAL |
| Grade (As per IS: 513) |
Low Carbon |
O, D, DD, EDD, HROP and HROPSP |
Medium Carbon |
MC-11, MC-12 & HC-14 |
Hardness |
Quarter-Hard, Half-Hard and Full-Hard |
Thickness |
0.40 mm to 3.00 mm for CRCA
1.60 mm to 3.90 mm for HROP/HROPSP |
Width |
20 mm to 1020 mm for Coil form
100 mm |
Length |
1000 mm to 2900 mm |
Edge Condition |
Trimmed & Mill Edge as required |
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Chemical Composition (% Max) |
Mechanical Properties |
Grade |
C |
Mn |
S |
P |
Tensile Strength (Kg/mm 2) |
Elog(%) Min |
Hardness HV Max |
O |
0.150 |
0.600 |
0.055 |
0.055 |
- |
- |
- |
D |
0.120 |
0.500 |
0.040 |
0.040 |
28-42 |
28 |
125 |
DD |
0.100 |
0.450 |
0.035 |
0.035 |
28-38 |
32 |
110 |
EDD |
0.080 |
0.400 |
0.030 |
0.030 |
28-36 |
36 |
105 |
NA EDD |
0.080 |
0.400 |
0.030 |
0.025 |
29 Min |
36 |
95 |
MC-11 |
0.450 |
0.700 |
0.040 |
0.040 |
-- |
- |
220 |
MC-12 |
0.600 |
0.800 |
0.040 |
0.040 |
-- |
- |
300 |
HC-14 |
0.800 |
0.800 |
0.040 |
0.040 |
-- |
- |
350 |
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Remarks: ECV & Bend Test as per standard varies against thickness; NA – Non-Ageing.
Temper Range for Low Carbon Steel (in VPN) |
Hardness |
Minimum |
Maximum |
Full-Hard |
165 |
200 |
Half-Hard |
135 |
165 |
Quarter-Hard |
110 |
135 |
Skin Pass |
100 |
117 |
Annealed |
90 |
110 |
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| Specification of CRFH Coil |
Hardness |
Full-Hard (VPN 165 min) |
Thickness |
0.14 mm to 1.00 mm |
Width |
600 mm to 1000 mm |
Length |
1000 mm to 1800 mm |
Edge Condition |
Trimmed or Mill Edge, as required. |
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| TESTING FACILITIES |
Hardness, Bend Test, Cupping Value, UTS/YS, Gauge, Width, Elongation & Chemical Composition. |
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DIMENSIONS, NOMINAL WEIGHT, ETC., OF BLACK AND GALVANISED STEEL TUBES
CONFORMING TO BS: 1387 / IS 1239 |
| NB & |
APPROX.OUTER |
WALL |
APPROX. WEIGHT OF TUBES |
SOCKETS |
| SERIES |
DIAMETER |
THICKNESS |
PLAIN END |
SCREWED & SOCKETED |
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| mm(inches) |
Min.mm |
Max.mm |
mm |
Guage |
Kg/Mtr |
Mtrs/MT |
No.of Pipes |
Kg/Mtr |
Mtr/MT |
No of Pipes |
O.D. |
Length |
| 15 (1/2") L |
21.0 |
21.4 |
2.0 |
14 |
0.947 |
1056 |
175 |
0.956 |
1046 |
174 |
27.0 |
37 |
| M |
21.0 |
21.7 |
2.6 |
12 |
1.21 |
826 |
137 |
1.22 |
820 |
136 |
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| H |
21.0 |
21.7 |
3.2 |
10 |
1.44 |
694 |
115 |
1.45 |
690 |
114 |
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| 20 (3/4") L |
26.4 |
26.9 |
2.3 |
13 |
1.38 |
725 |
120 |
1.39 |
719 |
119 |
32.5 |
39 |
| M |
26.5 |
27.2 |
2.6 |
12 |
1.56 |
641 |
107 |
1.57 |
637 |
106 |
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| H |
26.5 |
27.2 |
3.2 |
10 |
1.87 |
533 |
89 |
1.88 |
532 |
88 |
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| 25 (1") L |
33.2 |
33.8 |
2.6 |
12 |
1.98 |
505 |
84 |
2.00 |
500 |
83 |
39.5 |
46 |
| M |
33.4 |
34.2 |
3.2 |
10 |
2.41 |
415 |
69 |
2.43 |
412 |
68 |
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| H |
33.4 |
34.2 |
4.0 |
8 |
2.94 |
340 |
57 |
2.96 |
338 |
56 |
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| 32(11/4") L |
41.9 |
42.5 |
2.6 |
12 |
2.54 |
394 |
66 |
2.57 |
389 |
65 |
49.0 |
51 |
| M |
42.1 |
42.9 |
3.2 |
10 |
3.10 |
323 |
54 |
3.13 |
319 |
53 |
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| H |
42.1 |
42.9 |
4.0 |
8 |
3.80 |
263 |
44 |
3.83 |
262 |
43 |
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| 40(11/2") L |
47.8 |
48.4 |
2.9 |
11 |
3.57 |
310 |
52 |
3.27 |
306 |
51 |
56.0 |
51 |
| M |
48.0 |
48.8 |
3.2 |
10 |
3.56 |
280 |
47 |
3.61 |
277 |
46 |
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| H |
48.0 |
48.8 |
4.0 |
8 |
4.38 |
228 |
38 |
4.42 |
226 |
37 |
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| 50 ( 2") L |
59.6 |
60.2 |
2.9 |
11 |
4.08 |
245 |
41 |
4.15 |
241 |
40 |
68.0 |
60 |
| M |
59.8 |
60.8 |
3.6 |
9 |
5.03 |
199 |
33 |
5.10 |
196 |
32 |
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| H |
59.8 |
60.8 |
4.5 |
7 |
6.19 |
162 |
27 |
6.26 |
160 |
26 |
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| 65 (21/4") L |
75.2 |
76.0 |
3.2 |
10 |
5.71 |
175 |
29 |
5.83 |
172 |
28 |
84.0 |
69 |
| M |
75.4 |
76.6 |
3.6 |
9 |
6.43 |
156 |
26 |
6.55 |
153 |
25 |
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| H |
75.4 |
76.6 |
4.5 |
7 |
7.93 |
126 |
21 |
8.05 |
124 |
20 |
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| 80 (3") L |
87.9 |
88.7 |
3.2 |
10 |
6.72 |
149 |
25 |
6.89 |
145 |
24 |
98.0 |
75 |
| M |
88.1 |
89.5 |
4.0 |
8 |
8.37 |
119 |
20 |
8.54 |
117 |
19 |
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| H |
88.1 |
89.5 |
5.0 |
6 |
10.30 |
97 |
17 |
10.50 |
95 |
16 |
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| 100(4") L |
113.9 |
113.9 |
3.6 |
9 |
9.75 |
103 |
17 |
10.00 |
100 |
16 |
124.0 |
87 |
| M |
113.3 |
114.9 |
4.5 |
7 |
12.20 |
82 |
14 |
12.50 |
80 |
13 |
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| H |
113.3 |
114.9 |
5.4 |
5 |
14.50 |
69 |
12 |
14.80 |
68 |
11 |
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| TOLERANCES (BS 1387) |
| Thickness |
Light |
Medium |
Heavy |
| -8% |
-10% |
-10% |
| Weight |
Light, Medium & Heavy Tubes |
For single Tube +/- 10% |
| Length |
Light, Medium & Heavy Tubes |
Random Length of 4 to 7 metres unless specified otherwise |
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| TOLERANCES (IS 1239) |
| Thickness |
Light Tubes |
-8%, + not limited |
| Medium & Heavy Tubes |
-10%, + not limited |
| Weight |
Single Tube Light Class |
+10%, -8% |
| Single Tube (Medium & Heavy Class) |
+/- 10% |
| Per 10 MT load (Light Class) |
+7.5%, -5% |
| Per 10 MT load (Medium & Heavy Class) |
+/-7.5% |
| Length |
Light, Medium & Heavy Tubes |
Random length of 4 to 7 mtrs |
| unless specified otherwise |
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VSL also produces Precision Tubes made of CRCA, to meet the needs of the Automobile Industry and the General Engineering Industry. |
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