GI & GL Corrugated Roofing Steel Sheet Supplier

GI & GL Corrugated Roofing Steel Sheet

Various wave profiles meet different drainage, wind resistance and installation requirements.
GL aluzinc base offers far better anti-rust performance than ordinary GI galvanized sheet.
Ultra-light weight reduces roof load while maintaining excellent compressive strength.
Low cost, easy cutting & quick on-site installation, shorten construction period greatly.
Uniform metal coating resists rain and moisture erosion for long service life.

Product Overview

GI & GL Corrugated Roofing Steel Sheet is a profiled roofing material manufactured from hot-dip galvanized steel (GI) and 55% aluminum-zinc alloy coated steel (GL) substrates. With multiple corrugated profiles and a thickness range of 0.12–0.8 mm, it provides flexible solutions for different roofing, enclosure, drainage, and wind-load requirements.

Available profiles include YX25-210-840, YX35-125-750, YX15-225-900, 1050, and 1220. The corrugated structure improves bending resistance, compressive performance, and wind uplift resistance while maintaining a lightweight construction.

GI and GL options allow buyers to select the appropriate coating according to project conditions. GI is suitable for general inland applications, while GL provides enhanced resistance to salt fog and humid environments. The sheets are easy to cut, transport, splice, and install, making them suitable for contractors, developers, and temporary construction projects.

GI & GL Corrugated Roofing Steel Sheet

Chemical & Mechanical Property Snapshot

Grade	Coating	C Max	Mn Max	P Max	S Max	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%)
GI (DX51D+Z)	Zinc Coating	0.12	0.60	0.10	0.045	220–350	270–500	≥22
GL (DX51D+AZ)	55% Al-Zn Coating	0.12	0.60	0.10	0.045	220–350	270–500	≥22
DX52D+Z / DX52D+AZ	Zinc / Al-Zn Coating	0.12	0.60	0.10	0.045	180–300	260–420	≥26

Detailed Technical Specifications

Category	Item
Product Name	GI & GL Corrugated Roofing Steel Sheet
Product Type	Corrugated / Profiled Roofing Steel Sheet
Substrate	Hot-Dip Galvanized Steel (GI) / 55% Aluminum-Zinc Alloy Coated Steel (GL)
Forming Process	Cold Pressing / Roll Forming
Available Profiles	YX25-210-840, YX35-125-750, YX15-225-900, 1050, 1220
Thickness	0.12–0.8 mm
Surface Coating	Zinc Coating (GI) / Aluminum-Zinc Alloy Coating (GL)
Structural Features	Lightweight, high bending resistance, compressive performance and wind uplift resistance
Drainage Performance	Corrugated waveform supports efficient rainwater drainage and helps reduce water accumulation
Processing	Easy cutting, splicing and on-site installation
GI Application	Inland and relatively dry areas, temporary buildings and economical roofing
GL Application	Coastal, humid and salt-wind environments requiring higher corrosion resistance
Main Applications	Temporary Workshops, Site Enclosures, Residential Roofing, Simple Warehouses, Agricultural Sheds, Temporary Factory Buildings
Quality Documents	Complete Inspection Certificates
MOQ	5 Ton
Payment Terms	T/T, L/C at Sight
Delivery Time	7–15 working days after receiving deposit
Package	Waterproof paper + plastic film + wooden pallet, seaworthy export packing

Available Roof Corrugated Profiles

We supply a comprehensive range of GI & GL corrugated roofing profiles, including trapezoidal rib panels, classic arc sinusoidal corrugated sheets, hidden fastener standing seam profiles. Different wave heights, effective widths and structural strength options can match diverse wind load, drainage, wall cladding and roofing project requirements. All profiles can be roll-formed from GI hot-dip galvanized or GL aluzinc steel substrate.

Profile Model	Wave Height	Pitch (Wave Spacing)	Effective Cover Width	Raw Coil Width	Core Features	Typical Application
YX8-31.5-882	8 mm	31.5 mm	882 mm	1000 mm	Ultra-low rib, lightweight, economical, simple forming	Interior wall panel, temporary enclosure, inner lining board
YX15-225-900	15 mm	225 mm	900 mm	1000 mm	Low trapezoidal rib, good cost performance, easy installation	Agricultural sheds, site temporary walls, small workshop roofing
YX18-76-988	18 mm	76 mm	988 mm	1200 mm	Small round wave, smooth arc, nice drainage, wide coverage	Farm buildings, poultry houses, simple wall cladding
YX25-210-840	25 mm	210 mm	840 mm	1000 mm	Medium trapezoidal rib, stable bearing capacity, most popular standard model	Factory roofs, warehouse wall cladding, general industrial roofing
YX28-205-820	28 mm	205 mm	820 mm	1000 mm	Medium-high rib, high rigidity, good snow load resistance	Warehouse roofs, factory wall panels, medium-span buildings
YX35-125-750	35 mm	125 mm	750 mm	1000 mm	High rib design, excellent drainage, strong anti-wind-uplift performance	Large industrial plants, heavy rainfall areas, large-span warehouses
YX35-215-860	35 mm	215 mm	860 mm	1000 mm	Wide pitch high rib, large supporting span	Large factory roofs, logistics warehouses
YX51-380-760	51 mm	380 mm	760 mm	1000 mm	Deep high rib, heavy load bearing, strong wind resistance	Large-span industrial buildings, heavy snow region roofing
YX66-394-788	66 mm	394 mm	788 mm	1000 mm	Standing seam hidden fastener, 360° lock, no screw penetration, superior waterproof performance	Public buildings, large industrial roofs, coastal high-wind projects
1050 Arc Sinusoidal Corrugated Sheet	18 mm	130 mm	1050 mm	1200 mm	Classic circular arc wave, smooth waveform, outstanding rainwater runoff	Farm sheds, poultry houses, economical residential roofing
1220 Wide Arc Corrugated Sheet	20 mm	140 mm	1220 mm	1250 mm	Wide effective width, fewer seams, fast construction speed	Large-area simple roofs, temporary factory coverings

Product Comparison Table

Feature	GI Corrugated Roofing Steel Sheet	GL Corrugated Roofing Steel Sheet
Substrate	Hot-Dip Galvanized Steel	55% Aluminum-Zinc Alloy Coated Steel
Coating Type	Zinc Coating	Aluminum-Zinc Alloy Coating
Coating Weight	Z40 ~ Z275 g/m²	AZ50 ~ AZ150 g/m²
Corrosion Protection	Suitable for general atmospheric conditions	Enhanced resistance to salt fog and humid environments
Recommended Environment	Inland and relatively dry areas	Coastal, humid and salt-wind regions
Available Profiles	YX25-210-840, YX35-125-750, YX15-225-900, 1050, 1220	YX25-210-840, YX35-125-750, YX15-225-900, 1050, 1220
Thickness	0.12–0.8 mm	0.12–0.8 mm
Structural Performance	Lightweight with improved bending, compression and wind resistance after corrugation	Lightweight with improved bending, compression and wind resistance after corrugation
Processing	Easy cutting, splicing and installation	Easy cutting, splicing and installation
Typical Applications	Temporary workshops, site enclosures, simple warehouses and rural roofs	Coastal roofing, agricultural sheds, temporary buildings and humid-environment projects

App Market

Reliable Steel Coil Solutions For Diverse Industrial Applications

Simple Warehouse Roofing GI Corrugated Steel

Temporary Site Fencing GI Corrugated Steel

Residential Roofing GI Corrugated Steel

Product Packaging

Secure Export Packaging For Safe Handling And Delivery

GI & GL Corrugated Roofing Steel Sheet 5

FAQs

What is GI & GL Corrugated Roofing Steel Sheet?

It is a profiled roofing sheet made from hot-dip galvanized GI or 55% aluminum-zinc alloy coated GL steel substrates, formed into standardized corrugated profiles.

What thicknesses are available for GI & GL Corrugated Roofing Steel Sheet?

The provided product range covers 0.12–0.8 mm thickness.

Which is more suitable for coastal environments, GI or GL?

According to the provided product information, GL is preferred for coastal, humid, and salt-wind environments because of its resistance to salt fog.

What corrugated profiles are available?

Available profiles include YX25-210-840, YX35-125-750, YX15-225-900, 1050, and 1220.

Can the roofing sheets be processed for project requirements?

The product can be cut and spliced on construction sites, and profile and thickness selection can be matched to project requirements.

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GI & GL Corrugated Roofing Steel Sheet Supplier