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COLOR COATED GALVALUME/GALVANIZED SHEET

Industrial Roofing / Cladding

The sky is the limit when designing with pre coated sheet

Coated Steel Sheet has been used extensively by the construction industry throughout the World for nearly two centuries. Because of its excellent corrosion resistances, it has become the preferred material for a wide range of construction uses, particularly roofing and walling.

Coated steel sheet is a unique building material. It combines the strength of steel with the excellent corrosion protection of zinc/aluminum alloy coatings. It can be punched, roll-formed and joined in to a limitless number of structural and decorative building products.

  1. Advantage
  2. storage
  3. Technical Specification

Features

Excellent design & secure fastening systems ensure the security and weather-light performance of coated steel roofing during extreme weather. Coated steel sheets are resistant to fire.

Excellent thermal properties that keep the building cooler in summer and warmer in winter

Prevents noise and provide quite roofing system, particularly when used in combination with appropriate insulation systems.

Do's & Dont's

MATERIAL HANDLINGS, STORAGE & SAFETY GUIDELINES FOR COATED STEEL COILS / SHEETS

This material handling, storage & safety data sheet is applicable for Pre-painted / AI-Zn Alloy coated / Galvanised steel products under the following instructions after the shipment from ALFA STEEL. AlfaSteel's recommendations on the handling of Alfa Pre-painted / AI-Zn Alloycoated / Galvanised productsteelcoils, sheetforroofing / building / cladding construction / installation.

Handling: Alfa Pre-Painted / AI-Zn Alloy coated / Galvanised steel product should be handled with properequipments during loading & offloading of the material. Le., Forklift, Crane. C hooks, Nylon Belts. High tensile straps cutter etc. Material should be properly lashed, chocked & covered for transportation. Coils handling should be very smooth without any rapid shock during lifting movement from one place to another place. Pre-painted coils should not be rolled on floor.

Safety wares like helmet,hand gloves,shoes should b eworn by material handling personne.

Storage: Alfa Pre-painted / AI-Zn Alloy coated / Galvanised steel product, if not required for immediate use, should be neatly sacked (sheets or coils) clear or ground without any water seepage inside. In case the material is left in open, it should be protected from rain and moisture with tarpaulins or similar covers and stacked at an angle to assist drainage.

The polythene used to wrap the pack is not suitable for prolonged exposure in the open since sunlight modifies its properties.

Forming: Equipment should be clean so that any oil / grease or foreign particle does not come in contact with the pre-painted surface. Sheets should not be dragged over other sheets or equipment surfaces.

Any debris or surplus items such as fasteners, iron drill particles to be carefully removed each day after completion of installation work Le. swarf, surplus items such as fasteners to be removed from work place.

In case of material with protective film, the film should be removed immediately during the installation.

Durability of product is subjected to environment conditions in surrounding atmosphere at installation site.

Base Metal High Tensile Steel
Coating Mass 150 AZ / 70 AZ
Yield Strength 550Mpa
  1. Application
  2. Technical Specification

Reduced Concrete usage : Tensile steel for composite slab construction that cuts down on slab thickness and dead weight of buildings. Providing a more sustainable solution and reducing costs.

No separate formwork required for slab casting.

Reduces construction time.

Technical department at Alfa offers comprahassive advisory of service on design of composite flooring should quiries arise when are not cover by this literature please contact us.

Base Metal

High tensile structural grade steel

Coating Mass 120, 180 & 275 GSM

Coating Standard IS : 277

Yield Strength 240 MPA / 350 MPA / 550 MPA

Premier Coating Minimum 10 Microns

Colour coating Premier 10 Microns Bottom 25 Micron

Available Finish

Cold Rolled (CR)

Pre coated galvanized under side giving durable and attractive appearance and minimum future maintenance. Thickness 0.8mm/1mm/1.2m

Bare Galvalume sheet

Our Bare Galvalume Roofing Sheet are available in numerous sizes, designs and colors and are in extensively demanded in homes, restaurants, hotels and many other places. Further our quality auditors test this sheet on set parameters to ensure a flawless product from our end and retain customer’s permantantly. Our products are of rugged design, excellent strength, durable and easy to install. The combination of zinc and aluminum in Galvalume which enhances both the positive and negative effects of aluminum. Galvalume has barrier corrosion resistance and heat resistance similar to aluminized material and good bare edge galvanic protection and forming qualities like galvanized material.

Tile Profile Sheets

Alfa offers traditional and popular Mangalore Tiled shape profile. Elegant looking clay tiled profile sheets are available in variety of colors, adds beauty to your roof. Tile Roof Sheet offered come in precision designed and construction finish so as to perfectly match up with the different roofing requirements. Further, the superior construction values of these sheets also make them provide for excellent resistance from corrosion as well as deliver optimum sound insulation and fire retardant support as demanded by the customer’s insulated panel.

Crimp Sheets

Easy to install, crimped curved sheets provide versatility and creativity that bring new and refreshing design to industrial and domestic buildings. The combination curves and contours in concave and convex shapes with flats and angles can be used to add an aesthetic appeal to the building.

These sheets provide absolute design freedom with significant cost saving in construction. This is possible because:

Crimped sheets require less supporting framework for parapets and roofs.

Reduction or elimination of many flashing/cappings.

Less cladding material required for covering a given curve.

Standing Seam Sheets

Standing seam roofing is the most reliable roofing material. The risk of leakage is excluded due to concealed fixing, reliable seaming, and absence of through holes. Standing seam roofing blends into architectural character of cities thus being applied for new building construction as well as for remodeling and renovation.

ProductEffective widthCrest DeptCrest Distance
Standing seam 820mm 50mm 410 mm c/c With 2ribs at the centre for stiffening
  1. Advantage
  2. Technical Specification

Advantages

On site rollforming thus providing single length sheet from Ridge to eve avoiding make weather.

Tha channce of leakage is eliminated if roofing is properly seaned Easy and quick to install.

Absense of throu8gh holes Prevents perforation corrosion both at joints and on surface thus ensuring for very low ultimate durability.

Suitable for very low sloped Roofs.

Industrial as well as Housing and other Application suitable for.

MATERIAL PREPAINTED GALVANISED STEEL(PPGI) PREPAINTED GALVANISED STEEL(PPGL) NON-COLOUR GALVALUME STEEL(BG)
Base metal cold rolled steel cold rolled steel cold rolled steel
Yield strength 240MPA 340MPA 240Mpa
Metalic coating Specification. Z120 g/m(gsm) AZM 150 g/m(gsm) AZM 150 g/m(gsm)
paint type on top coat Regular Modified polyster(rmp)silicon modified polyster(SMP)poly viny di-flouride(PVDF2) Regular Modified polyster(rmp)silicon modified polyster(SMP)poly viny di-flouride(PVDF2) Non Colour
Product finish Matt finish,Glossy finish Matt finish,Glossy finish natural
Masking using polythene guard films using polythene guard films using polythene guard films
top coat thickness(dft) 18-20 microns minimum 18-20 microns minimum -
Back coat Epoxy/pu/polyester Epoxy/pu/polyester -
Back coat thickness(dft) 5-7 microns minimum 5-7 microns minimum -
total coated thickness 0.5 and above 0.5 and above 0.5 and above
Top Coat color Refer our color card Refer our color card -
Back coat color Grey as per mail standard. Grey as per mail standard. -
Back coat color Grey as per mail standard. Grey as per mail standard. -
Confirmed standrad ASTM A653/A653M,ASTM A755/A755M,IS 277/IS 513,IS 14246,JIS.3312,As 1397 ASTM A792/A792/ASATM A755/A755M,JIS.3312,As 1397 ASTM A792/A792/,JIS.3312,As 1397
  1. Advantage
  2. Technical Specification

Advantages

On site rollforming thus providing single length sheet from Ridge to eve avoiding make weather.

Tha channce of leakage is eliminated if roofing is properly seaned Easy and quick to install.

Absense of throu8gh holes Prevents perforation corrosion both at joints and on surface thus ensuring for very low ultimate durability.

Suitable for very low sloped Roofs.

Industrial as well as Housing and other Application suitable for.

MATERIAL PREPAINTED GALVANISED STEEL(PPGI) PREPAINTED GALVANISED STEEL(PPGL) NON-COLOUR GALVALUME STEEL(BG)
Base metal cold rolled steel cold rolled steel cold rolled steel
Yield strength 240MPA 340MPA 240Mpa
Metalic coating Specification. Z120 g/m(gsm) AZM 150 g/m(gsm) AZM 150 g/m(gsm)
paint type on top coat Regular Modified polyster(rmp)silicon modified polyster(SMP)poly viny di-flouride(PVDF2) Regular Modified polyster(rmp)silicon modified polyster(SMP)poly viny di-flouride(PVDF2) Non Colour
Product finish Matt finish,Glossy finish Matt finish,Glossy finish natural
Masking using polythene guard films using polythene guard films using polythene guard films
top coat thickness(dft) 18-20 microns minimum 18-20 microns minimum -
Back coat Epoxy/pu/polyester Epoxy/pu/polyester -
Back coat thickness(dft) 5-7 microns minimum 5-7 microns minimum -
total coated thickness 0.5 and above 0.5 and above 0.5 and above
Top Coat color Refer our color card Refer our color card -
Back coat color Grey as per mail standard. Grey as per mail standard. -
Back coat color Grey as per mail standard. Grey as per mail standard. -
Confirmed standrad ASTM A653/A653M,ASTM A755/A755M,IS 277/IS 513,IS 14246,JIS.3312,As 1397 ASTM A792/A792/ASATM A755/A755M,JIS.3312,As 1397 ASTM A792/A792/,JIS.3312,As 1397

Self Supported Roofing Sheet

The sheets are produced and installed at site without any supports like Trusses, Purlins or any other structural memberance. Provides larger enclosed volumes, free movement and effective handling of goods and higher utilization. Self supported roofing sheets have created a revolution in the industry as these roofing sheets do not require any kind of support. Our roofing sheets uses mechanical sealing and installed without any holes, nuts, bolts, overlaps or sealants thus reducing on maintenance cost and maximizing on corrosion resistant property. With no need of making holes, drilling nuts and bolts, the overall time for installation lowers down remarkably thus increasing the efficiency with faster project turnaround.

Clip Lock Sheets

Clip lock sheets is designed to be fastened to roof purlins or wall girts with fixing clips which are concealed during fixing and do not require any fastening holes through the steel sheets. The double capillary break design of the interlocking mechanism of adjoining sheets ensures the prevention of ingress of rainwater by capillary action. As the side lap contact area of the profile is minimal and is well ventilated, trapped moisture cannot remain and the danger of overlap corrosion is eliminated. From security point of view as fasteners are concealed, roof sheets cannot easily be removed from outside.

Light Weight Aluminium Pre Painted Sheets

aliminium is replacing conventional roofing materials across industries with kind of characteristics it displays, aluminium has become the first choice across segments for residential and industrial applications today. Alfa Aluminium Sheet is a Alfa product. It provides aluminium roofing materials for those who need lonh-lasting protection. Alfa Aluminium roofing sheets are of exceptional quality and are reliable. Alfa offers ideal and economial solution for all your roofing needs.