The roofing sheet division has the largest sheet manufacturing facility in the country which include two galvanising lines, (Sheet by Sheet and Continuous Galvanising Line "CGL"), Shearing line, colour coat line, and six sheet forming centers.
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Together, the facilities ensure an excellent availability of the widest range of galvanised and colour coated sheet products lines include introduction of the new generation air jet wiping system with CGL. Regular interaction with technology leaders in Japan and Australia, have helped us provide the consumer with benefits of the latest technology in galvanised and pre-painted sheets, representing the best value for money.
Pre-printed sheets and galvanised sheets are produced n various shapes and long lengths to suit consumer requirements. Detailed customer interaction have given insight to design and production of roofing sheets in different shapes and sizes to suit different customers.
At Hulas Steel we undertake complete turnkey jobs for steel roofing, including design sheet laying with self tapping screw and J-hook, ridges, gutters
Standards
The Product confirms to JIS-G 3302 and the main applications include commercial and structural works such as roofing, cladding, boxes, ducts, moter vehicle bodies, domestic appliances etc.
The divison has now for the first time started manufacturing "Lock forming" quality galvanised sheets in Nepal. Which is ideal for fabrication purposed. The air wiping technology in the CGL is the leatest trend and de facto standard all over the world. This enhances the uniformity and smoothness of Zinc giving a vastly improved surface finish and maintains the zinc coating to specified levels.
We have manufacturing Galvanised sheet since 1983. Verious National and international Standards such as NS 141/044, IS 277-1985, JIS 3302(1987). Galvanised steel sheets with width upto 1250mm and length upto 12 meters are availabe as plain sheets or in various profiles as per derails in profiles.
Zinc Coating:
As per NS 141/044
| Type | Applicalbe Normal Thickness | Thickness of Zinc Coating (Both Sides) | Mass of Zinc coating (Both Sides) |
| For roofing purpose | mm | mm | |
| 0.40 to 1.0 mm | 0.049 | 250 | |
| 1.0 mm and more | 0.054 | 275 |
As per JIS-G 3302
| Coating Classification | Symbol of Zinc Coating | ZAverage Coating mass in trible Spot Test | Minimum Coating Mass at single Spot Test |
| Non Alloyed
| g/m2 (Both Surfaces) | g/m2 (Both Surfaces) | g/m2 (Both Surfaces) |
| Z10 | 100 | 85 | |
| Z12 | 120 | 102 | |
| Z18 | 180 | 153 | |
| Z20 | 200 | 170 | |
| Z25 | 220 | 187 | |
| Z22 | 250 | 213 | |
| Z27 | 275 | 234 | |
| Z35 | 350 | 298 | |
| Z08 | 80 | 68 | |
|
Alloyed | F10 | 100 | 85 |
| F12 | 120 | 102 | |
| (F 18) | (180) | (153) |
As per IS 277(2003)
| Table 1 Mass of Zinc coating (Total Both sides) | ||
| Grade of Coating | Minimum Average Coating Triple Spot Test | Minimum Coating Single Spot Test |
|
| g/m2 | g/m2 |
| 750 | 625 | 550 |
| 600 | 500 | 425 |
| 450 | 350 | 300 |
| 375 | 275 | 250 |
| 300 | 225 | 200 |
| 250 | 200 | 175 |
| 200 | 175 | 150 |
| 175 | 120 | 100 |
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