Hot-Dip Galvanized Steel for Light Steel Framing & Ventilation Duct Systems
As a professional galvanized steel supplier, we provide premium continuous hot-dip galvanized (GI) steel coils, sheets and slit strips engineered for two core construction applications: light steel studs/tracks and HVAC ventilation ductwork.
Sourced from advanced continuous galvanizing lines, our GI steel delivers uniform zinc coating, excellent cold formability and reliable rust protection - making it the cost-effective alternative to stainless steel for both structural framing and air distribution systems. Whether you are a stud manufacturer, duct fabricator, MEP contractor or construction builder, our material is formulated to meet on-site fabrication demands and perform reliably in high-humidity, tropical and coastal climates across Africa, Southeast Asia and Central Asia.
Galvanized Steel for Light Steel Framing (Studs & Tracks)
Our GI steel strip is widely used to manufacture cold-formed light steel keels, including wall studs, ceiling tracks, furring channels and roof truss profiles. It serves as the load-bearing skeleton for drywall partitions, suspended ceilings and prefabricated light steel buildings.
Common Applications
Drywall partition studs & tracks
Suspended ceiling grids & furring channels
Light gauge steel framing for residential & commercial buildings
Prefabricated house structures
Warehouse interior partition systems
Available Specifications
|
Item |
Parameter Range |
|
Base material |
Q195, Q235, SGCC, DX51D+Z |
|
Thickness |
0.4 mm – 1.0 mm (standard for stud & track) |
|
Width |
Custom slit strips from 30 mm to 600 mm |
|
Zinc coating mass |
100 g/m² – 180 g/m² (double-sided) |
|
Surface |
Regular spangle, zero spangle, chromated passivated |
|
Standard compliance |
GB/T 2518, GB/T 11981, ASTM A653 |
Key Benefits for Stud Fabrication
Consistent coating adhesion: Zinc layer bonds firmly to the steel substrate, resisting flaking and peeling during high-speed cold roll forming.
High dimensional accuracy: Tight thickness and width tolerance ensure smooth feeding into stud roll forming lines with no jamming.
Structural rigidity after forming: Maintains strong mechanical strength for load-bearing wall and ceiling systems.
Long-term corrosion resistance: Minimum 100 g/m² zinc coating provides durable rust protection for indoor and semi-outdoor framing projects.
Galvanized Steel for Ventilation Ductwork
We supply flat GI sheets and coils specially suited for fabricating rectangular and spiral ventilation ducts used in HVAC, smoke extraction, industrial dust collection and clean air systems. The flat, smooth surface and excellent bendability support all common duct fabrication methods including TDC/TDF flange, snap lock and spiral forming.
Common Applications
HVAC heating, cooling and air supply ducts
Fire fighting & smoke exhaust systems
Industrial dust collection and ventilation
Kitchen exhaust ducts
Clean room and hospital air distribution systems
Warehouse and factory ventilation
Available Specifications
|
Item |
Parameter Range |
|
Base material |
SGCC, DX51D+Z, Q235 |
|
Thickness |
0.5 mm – 1.5 mm (up to 2.0 mm for high-pressure ducts) |
|
Sheet size |
1220 x 2440 mm, 1250 x 2500 mm, or custom cut-to-length |
|
Coil width |
1000 mm, 1220 mm, 1250 mm, 1500 mm |
|
Zinc coating mass |
80 g/m² – 120 g/m² (standard); 180 g/m² – 275 g/m² for humid/coastal areas |
|
Surface |
Zero spangle, smooth finish for low air resistance |
|
Standard compliance |
GB 50738, JGJ/T 141, ASTM A653 |
Key Benefits for Duct Fabrication
Superior sealing performance: Uniform plate thickness enables tight seam locking and flange connection, minimizing air leakage.
Smooth inner surface: Low friction surface reduces air resistance and improves HVAC energy efficiency.
Wind pressure resistance: Maintains structural stability under positive and negative air pressure without deformation.
Moisture & corrosion resistance: Withstands condensation inside ducts and humid installation environments, extending service life.
Fabrication friendly: Compatible with shearing, bending, seaming and spot welding processes on site.
Why Choose Our Galvanized Steel for Your Projects?
Optimized for Tropical & Coastal Climates
We offer upgraded zinc coating options (180–275 g/m²) specifically for high-humidity, high-salinity regions across Africa and Southeast Asia, effectively resisting rust and corrosion in harsh outdoor and semi-outdoor conditions.
Full Customization Capability
Precision slitting to exact strip widths for stud roll forming lines
Cut-to-length sheets per your duct fabrication requirements
Custom zinc coating weight, surface treatment and packaging
OEM & ODM support for large project orders
Strict Quality Control
Every batch undergoes full inspection for zinc coating thickness, surface flatness, dimensional tolerance and mechanical properties, with complete MTC (Mill Test Certificate) provided for each shipment.
Reliable Export & Logistics
With years of export experience to African and Southeast Asian markets, we handle full container loading, customs documentation and flexible delivery terms (FOB, CIF, CFR) to ensure your materials arrive on schedule.
Cost-Effective Solution
Our direct-factory supply model cuts out middlemen, delivering high-quality GI steel at competitive prices - ideal for large-scale commercial, residential and infrastructure projects.
Standard Specification Reference Table
|
Application |
Common Thickness |
Typical Zinc Coating |
Common Form |
Primary Standard |
|
Light steel studs & tracks |
0.5 / 0.6 / 0.8 / 1.0 mm |
100–120 g/m² |
Slit coil / strip |
GB/T 11981, ASTM A653 |
|
Low-pressure ventilation ducts |
0.5 / 0.6 / 0.75 mm |
80–120 g/m² |
Flat sheet / coil |
GB 50738 |
|
Medium/high-pressure ducts |
1.0 / 1.2 / 1.5 mm |
120–180 g/m² |
Flat sheet / coil |
JGJ/T 141 |
|
Humid / coastal ductwork |
0.75 – 1.2 mm |
180–275 g/m² |
Flat sheet / coil |
ASTM A653 |
Packaging & Delivery
We use professional export packaging. The standard package includes waterproof paper, steel strip fixation and wooden pallets, preventing moisture and damage during transport.The lead time is 7-15 days after deposit, adjusting to your order size. We load goods at Qingdao Port and Tianjin Port, China, supporting global shipping.The minimum order quantity is one container; trial orders are negotiable.
Authoritative Qualification Certification
Our products have complete international certifications. They pass ISO 9001, CE, and SGS third-party tests. They also comply with RoHS and REACH standards. We can provide full certification documents for your project.
Frequently Asked Questions
Both are made from continuous hot-dip galvanized steel and share the same anti-corrosion principle. However, they differ in typical thickness, zinc coating weight and width form. Studs mostly use thin-gauge slit strips with minimum 100 g/m² zinc coating for structural strength, while ductwork uses wider flat sheets selected based on air pressure and corrosion environment.
Yes. Our GI steel complies with widely accepted international standards including ASTM A653, EN 10346 and Chinese GB standards, which are commonly accepted across construction projects in Africa, Southeast Asia and Central Asia.
We support both small trial orders and bulk container orders. Contact our sales team with your required specifications and project quantity for an exact quotation.
Yes. We offer in-house precision slitting and cut-to-length lines to produce exact strip widths and sheet sizes matching your stud forming or duct fabrication equipment.
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