Can I get roofing sheets cut to non-standard lengths?

Yes. Apex Metals specializes in non-standard length cutting. Standard market lengths are 3m, 6m, and 12m, but we can cut to any specified length from 1m to 12m. Custom lengths reduce waste at the job site and eliminate the need for onsite cutting, saving labor costs and ensuring a cleaner installation.

What RAL colors are available for color coated sheets?

We can produce virtually any RAL color on request, including RAL 3009 (Oxide Red), RAL 5015 (Sky Blue), RAL 6005 (Moss Green), RAL 9002 (Grey White), and RAL 9016 (Traffic White). Custom RAL color matching requires a minimum order quantity and slightly longer lead time than standard catalog colors.

What is the minimum order quantity for customized roofing sheets?

For standard catalog sizes and colors, there is no minimum order. For custom lengths, the minimum is typically 50 sheets per size. For custom RAL colors, the minimum order is typically 500–1,000 kg depending on the gauge, as the coil coating process requires a minimum run length.

Does customization increase the cost significantly?

Not always. Custom lengths can actually reduce your total project cost by eliminating waste material and onsite cutting labor. Custom colors do carry a premium (typically 8–15% over standard catalog colors). The key is to weigh the customization premium against the savings in installation labor, material waste, and long-term performance.

The Benefits of Customized Steel in Modern Industrial Construction |

In the industrial construction industry, the era of settling for “close enough” is over. Contractors and project developers across India are increasingly demanding steel products that match their exact specifications — not the other way around.

Customized steel roofing sheets, structural sections, and sandwich panels are no longer a luxury reserved for marquee projects. They are becoming the standard expectation for anyone serious about project efficiency, cost control, and long-term performance.

Here’s why tailored steel specifications are transforming how India builds.

1. The Problem with Off-the-Shelf Dimensions

The traditional model of steel distribution works like this: mills produce sheets in standard lengths (3m, 6m, 12m), standard widths (1050mm, 1150mm, 1220mm cover width), and standard gauges (0.30mm, 0.40mm, 0.47mm, 0.50mm). Distributors stock these standard sizes, and contractors buy what’s available.

The result? A massive waste problem that most project managers don’t account for until it hits their P&L.

Real-World Waste Scenario

A factory shed has a 9.5m roof span. The contractor orders 12m sheets and cuts 2.5m off each sheet on site. For a 1,000 sq.m roof:

Sheets ordered: ~186 sheets at 12m length
Material cut and discarded: ~46 sheets worth of steel
Waste percentage: ~25% by area
Additional costs: Cutting labor, disposal of scrap, risk of measurement errors

With custom 9.5m lengths, zero onsite cutting is required. The installation is faster, cleaner, and more precise — and the total material cost, including the small custom-cutting premium, is often lower than buying standard lengths.

2. The Six Key Dimensions of Steel Customization

A. Length Customization

The most impactful customization. Sheets can be cut to precise millimeter accuracy at the factory, from 1m to 12m+ lengths. For long-span roofs, curved buildings, or irregular dimensions, custom lengths are the only logical choice.

Benefits:

Zero onsite cutting waste
Faster installation (no measuring and cutting per sheet)
Consistent appearance (no mismatched overlap patterns)
Safer installation (no sharp freshly-cut edges requiring deburring)

B. Width and Cover Width

Standard sheets have a nominal width of 1250mm with a typical effective cover width of 1050–1150mm (accounting for overlap). For specific grid systems or modular building designs, custom cover widths can be produced to match your structural spacing exactly.

C. Gauge / Base Metal Thickness (BMT)

Not all projects have the same structural requirements. A poultry shed roof experiences very different loads than an airport terminal or a heavy manufacturing floor.

Application	Recommended BMT
Temporary structures, poultry sheds	0.35–0.40mm
Standard industrial sheds	0.45–0.50mm
High wind / snow load warehouses	0.55–0.60mm
Flooring decks (Deck sheets)	0.80–1.00mm

Using the right gauge — not overshooting (waste) or undershooting (structural failure) — requires project-specific specification.

D. Steel Grade / Yield Strength (YST)

Modern high-tensile steel (550 MPa YST) enables thinner sheets with equivalent or superior structural performance compared to older mild steel.

For example:

0.50mm BMT at 550 MPa ≈ structural performance of 0.60mm at 250 MPa (older grade)
Saves ~16% in material weight, reducing both material cost and structural load on purlins

This means your purlin sizing can be optimized, your secondary structure costs drop, and your foundations carry less load — savings that compound across the entire structural system.

E. Protective Coating Type and Mass

Standard market Galvalume sheets carry AZ100–AZ120 coating. For coastal regions, chemical environments, or projects requiring 20+ year lifespans, specifying AZ150 or AZ180 is critical.

Similarly, the zinc GSM (Grams per Square Meter) on galvanized sheets should be specified per IS 277:

Z100 → lightweight residential applications
Z200 → general industrial use
Z275 → heavy-duty exterior industrial, coastal proximity

F. Paint System and Color

This is where customization creates the most visible differentiation. Pre-painted sheets in custom RAL colors are now a standard requirement for:

Corporate branding: Matching a company’s brand colors across their facility
Architectural guidelines: Plotting scheme restrictions on industrial estates
Functional requirements: High-reflectivity white/silver coatings to reduce heat absorption by 15–20%

Available paint systems scale with performance requirements:

PE (Polyester): Standard, economical, 10–15 year life
SMP (Silicon Modified Polyester): Improved UV and heat resistance, 15–20 year life
PVDF: Chemical-resistant, color-fast for 20+ years, required for coastal/chemical environments

3. How Customization Actually Saves Money — The Total Cost of Ownership Model

Many procurement managers focus exclusively on unit price per kg when comparing suppliers. This approach misses most of the real cost picture.

Cost Category	Standard Off-Shelf	Custom Specification
Material unit cost	Lower	Slightly higher (custom cutting fee)
Onsite cutting labor	High	Zero
Material waste	15–25%	0–3%
Installation time	Longer	20–30% faster
Rework / measurement errors	Higher risk	Lower risk
Long-term maintenance	Variable	Optimized for climate
Total Project Cost	Higher	Lower

A 10% higher material cost from customization is almost always offset by the elimination of waste and faster installation — particularly on large projects above 5,000 sq.m.

4. Structural Integration — Why Custom Sections Matter for PEB Systems

For Pre-Engineered Building (PEB) projects, every component needs to work as a coordinated system. Custom purlin sections, girts, and eave struts that match your structural design prevent field modification, reduce connection complexity, and ensure load paths are as-designed.

C and Z Purlins

Light gauge cold-formed C and Z sections are the most common secondary structural members in industrial buildings. Standard depths are 100mm, 150mm, 200mm, and 250mm. However, custom depths and flange widths are often required for:

Long spans (4–6m purlin spacing)
High-wind uplift zones
Integration with existing structural systems on expansion projects

At Apex Metals, we supply custom C/Z purlins with the exact depth, flange width, and thickness required for your structural calculations. Explore our structural steel range →

Hollow Sections (SHS, RHS, CHS)

APL Apollo hollow sections are available in hundreds of standard sizes. For specialized connections or custom column-beam ratios, we source custom sizes from our mill connections at JSW and TATA. View structural products →

5. Environmental Benefits of Right-Sizing

Customized steel is not just economically efficient — it’s more sustainable.

Less waste sent to landfill: Onsite cutting generates significant scrap that often cannot be recovered
Lower embodied carbon: Using the precise gauge needed means less steel is consumed per project
Better thermal performance: Correctly specified insulated panels consume less HVAC energy over the building’s lifetime
Longer product lifespan: Correctly specified coatings reduce the need for premature replacement

As India moves toward ESG reporting requirements and green building ratings (IGBC, LEED), right-sized material specifications contribute measurably to sustainability targets.

6. The Apex Metals Customization Process

Getting customized steel from us is straightforward:

Share your specifications: Drawing, DXF file, or even a sketch with dimensions
Technical review: Our team confirms feasibility, recommends material grade and coating
Quotation: Itemized quote with per-sheet pricing for your custom specifications
Production and quality check: Factory production with mill test certificates
Delivery to site: Bundled and labelled by batch for easy installation sequencing

Lead time for custom orders: 3–7 working days depending on volume and specification complexity.

7. Common Myths About Customized Steel — Debunked

”Custom = Expensive”

Not always true. See the Total Cost of Ownership analysis above. Custom lengths often cost less in total than standard lengths with waste.

”Custom takes too long”

For most specifications, our lead time is 3–5 business days. Urgent project requirements can often be accommodated in 2 business days for standard gauge variations.

”Only large projects can benefit”

Customization benefits projects of all sizes. Even a 200 sq.m building benefits from custom-length sheets — the installation savings in a small project are proportionally even more significant.

Conclusion

Customized steel is not a premium option — it’s the intelligent default for serious industrial construction. With the right specifications, you reduce waste, speed up installation, improve long-term performance, and often lower your total project cost despite a slightly higher unit price.

At Apex Metals, customization is our core expertise. We exist to bridge the gap between what mills produce in standard runs and what your specific project actually needs.

Get a customized project quote → | Call us: +91 99929 05050

Related Reading:

The Benefits of Customized Steel in Modern Industrial Construction