Vizag Steel GC Roofing Sheets

Q: What IS standards do Vizag Steel GC sheets conform to?

Vizag Steel GC sheets conform to IS 277 (galvanised steel sheets, plain and corrugated) and IS 1079 (hot-rolled carbon steel sheets and strips), governing zinc coating weight, dimensional tolerances, mechanical properties, and surface finish.

Q: Is Vizag Steel a good choice for coastal and humid areas?

For coastal areas within 20 km of the sea, Vizag Steel GC sheets with 275 gsm zinc coating (Z275) are recommended for greater corrosion resistance. For standard inland locations, 180 gsm zinc coating is sufficient.

India's premier integrated steel plant — Rashtriya Ispat Nigam Limited

A Government of India Enterprise (RINL) IS 277 IS 1079

Headquarters: Visakhapatnam, Andhra Pradesh

About Vizag Steel Roofing Sheets

Rashtriya Ispat Nigam Limited (RINL), popularly known as Vizag Steel, is India's first shore-based integrated steel plant located at Visakhapatnam. As a Government of India enterprise under the Ministry of Steel, RINL produces a wide range of steel products including GC (galvanised corrugated) roofing sheets that comply with IS 277 and IS 1079 standards.

Vizag Steel sheets are particularly well regarded in South India and Eastern India, where the brand has strong distribution and a reputation for consistent quality backed by government manufacturing standards. The sheets are commonly used in residential buildings, agricultural structures, and rural housing schemes.

Profile Specifications and Weight Chart

Weight chart below shows weight per piece in kilograms for each thickness and standard sheet length. Data sourced from RINL product specifications.

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Profile Type GC Corrugated

Overall Width 1000 mm

Effective Cover 838 mm

Thickness Range 0.35 mm – 0.63 mm

Standard Lengths 8 ft, 10 ft, 12 ft, 14 ft, 16 ft

Zinc Coating 120 gsm, 180 gsm, 275 gsm

IS Standards IS 277, IS 1079

Minimum Slope 5°

Manufacturer Type Government of India PSU

Calculate Sheets Using Vizag Steel Profiles

Enter your roof dimensions to get exact sheet count, weight, and material estimate.

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Frequently Asked Questions — Vizag Steel GC Sheets

Who manufactures Vizag Steel roofing sheets?

Vizag Steel sheets are manufactured by Rashtriya Ispat Nigam Limited (RINL), a Government of India enterprise under the Ministry of Steel. RINL operates India's first shore-based integrated steel plant at Visakhapatnam, Andhra Pradesh. Being a PSU (public sector undertaking), quality standards are maintained under government oversight and Bureau of Indian Standards certification.

What IS standards do Vizag Steel GC sheets conform to?

Vizag Steel GC sheets conform to IS 277 (specification for galvanised steel sheets, plain and corrugated) and IS 1079 (specification for hot-rolled carbon steel sheets and strips). These standards govern zinc coating weight, dimensional tolerances, mechanical properties, and surface finish requirements.

In which states is Vizag Steel most easily available?

Vizag Steel has the strongest distribution in Andhra Pradesh, Telangana, Odisha, Chhattisgarh, and West Bengal — states in South and Eastern India. The brand is also widely available through RINL's authorised distributors in Karnataka, Tamil Nadu, and Maharashtra. For North India buyers, availability may be more limited and freight costs should be factored into pricing comparisons.

What is the effective cover of a Vizag Steel GC sheet?

A Vizag Steel GC corrugated sheet has an overall width of 1000 mm and an effective cover of 838 mm after the standard 162 mm side lap. For calculating how many sheets are needed for a given roof width, always use 838 mm (not 1000 mm) as the coverage per sheet. Use our Roof Sheet Calculator above for automatic quantity estimation.

Is Vizag Steel a good choice for coastal and humid areas?

For coastal areas and high-humidity regions near the sea (within 20 km of the coast), Vizag Steel GC sheets with 275 gsm zinc coating (Z275) are recommended. This higher zinc coating offers greater corrosion resistance. For standard inland locations, 180 gsm zinc coating is sufficient and more cost-effective.