Precision Slitted S550GD Z80 Galvanized Steel Strip Coil for Roll Forming
Galvanized steel strip is manufactured with precise slitting for tube and roll forming applications. Witop ensures stable supply
Precise Slitting & Narrow Width Control๏ผStable Zinc Coating Protection๏ผExcellent Formability Performance๏ผWide Thickness Range๏ผBulk Supply & Export Support
Galvanized Steel Strip Technical Sheet
| Galvanized Steel Strip Specification | |
| Standard | JIS G3302,ย EN10346,ย ASTM A653M |
| Grade | SGCC,SGCH,SGCD1,SGCD2, SGC -340,400,440,490,570 |
| DX51D, DX52D, DX53D, DX54D, S220GD, S250GD, S280GD, S320GD, S350GD, S450GD, S550GD | |
| CS Type A,B,Cย FS; Type A,B; DDS, EDDS; SS Grade 33,37,40,50,80 | |
| Zinc Coating | Z30-600G/M2 |
| Spangle Model | Zero Spangle, Small Spangle, Regular Spangle, Big Spangle |
| Surface Treatment | Chromated, Oiled, No-oiled |
| Hardness | Softy, Semi Hard, Full Hard, Drawing,Deep Drawing, Structural |
| Thickness | 0.12-2.00MM |
| Width | 20-599MM |
| Coil Weight | 1-3MT/Coil or Customized |
| Coil Inner Diameter | 508MM or 610MM |
| Package | Standard Seaworthy Exporting Packing |
| MOQ | 25MT |
| Capacity | 7000MT/Month |
| Transport Type | Vessel Container, Vessel Bulk, Railway Container, Railway Wagon |
| Loading Port | Tianjin, Qingdao, Ningbo, Shanghai and other Chinaโs port |
| Delivery Time | 15-25 Days after Receiving the Deposit |
| Terms of Trade | EXW, FOB, CFR, CIF |
| Terms of Payment | T/T and Irrevocable LC at Sight |
Precision Slitted GI Strip Description
Galvanized Steel Strip Description focuses on narrow-width zinc coated steel designed for tube making and roll forming applications. As an experienced steel manufacturer and bulk supplier, we provide strips with Z30โZ275 coating, precise slitting tolerance and thickness from 0.12โ2.0mm. Compared with galvanized steel coil, steel strip offers better efficiency for profiling and stamping production. Widely used by pipe makers, frame manufacturers and distributors, our galvanized steel strip helps reduce material waste, improve processing stability and ensure reliable long-term supply for industrial projects.
Galvanized Steel Strip Applications
ERW Steel Pipe & Tube Manufacturing
Galvanized steel strip is widely used in electric resistance welded (ERW) pipe production. Its narrow width and stable zinc coating ensure consistent welding performance and corrosion resistance in water pipes, scaffolding tubes and structural pipes.
Cold Roll Forming Profiles
Due to precise slitting tolerance, galvanized steel strip is ideal for producing C-channels, studs, tracks and light steel framing systems used in prefabricated construction.
Cable Trays & Metal Framing Systems
The material is commonly processed into cable trays, support brackets and industrial framing components where corrosion protection and structural stability are required.
Automotive & Machinery Parts
Galvanized strip is suitable for stamping smaller automotive inner components and machinery brackets that require thin gauge precision and anti-rust performance.
Electrical Conduit & Lightweight Tubing
Its consistent width control makes it a preferred material for conduit pipes and lightweight tubular systems in infrastructure projects.
Storage Racks & Shelving Systems
Galvanized steel strip is used for warehouse shelving rails and structural strips due to its high strength-to-weight ratio.
Galvanized Steel Strip Workflow
Uncoiler Leveler Slitting Machine Scrap Winder Tension Stand Recoiler
Packing Details Standard export package
3 layers of packing, inner side is anti-water craft paper, PVC plastic film is the middle and outer side covered by at least 0.45mm thick steel sheet,wrapped by minimum seven steel strapping strips with lock catch.
In particular, WITOP steel places desiccant on the coil inner core side and on both lateral sides of the coil for bulk transportation to ensure that coils are delivered to clients in good condition.
Package can be customized as client’s requirements.
Hot Dip Galvanized Steel Strip
| Hot Dip Galvanized Steel Strip | |||||
| GB T 2518 | JIS G 3302 | ASTM A653M | EN10346 | Application | |
| Specifications | DX51D | SGCCใSGHC | CS Type C | DX51D | Commercial |
| DX52D | SGCD1 | CS Type A ใCS Type B | DX52D | Commercial Hard | |
| DX53D | SGCD2 | FS Type AใFS Type B | DX53D | Drawing, Class 1 | |
| DX54D | SGCD3 | DDS Type C | DX54D | Drawing, Class 2 | |
| DX56D | SGCD4 | DDS Type A | DX56D | Drawing, Class 3 | |
| DX57D | โ | EDDS | DX57D | Drawing, Class 4 | |
| S220GD | โ | SS230 [SS33] | S220GD | Structural Quality | |
| S250GD | SGC340 | SS255 [SS37] | S250GD | ||
| S280GD | SGC400 | SS275 [SS40] | S280GD | ||
| S320GD | โ | โ | S320GD | ||
| S350GD | SGC440 | SS340 [SS50] class 4 | S350GD | ||
| S550GD | SGC570 | SS550 [SS80] class 2 | S550GD | ||
| Coating Mass | Z30~Z600 | Z30~Z600 | Z90-Z600 | Z80~Z600 | โ |
| Surface Finish | Zero,Small,Regular,Large | ||||
| Surface Treatment | Chromating, Oiled, Skin-pass or Green Treatment | ||||
| Remarks | 1. Tolerance for thickness, width, flatness and so on conforms to individual product specification. | ||||
| 2. All products with thickness 2.0mm and under can be skin passed. | |||||
| 3. The coil inside diameter can be either 508mm or 610mm. The maximum coil outside diameter is 2000mm. | |||||
| 4. Please make inquiries to our Sales & Marketing Division for products with special specifications. | |||||
| 5. Coating mass beyond the specifications above can be provided by Witop Steel. upon mutual agreement between customers and us. |
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FAQ โ Galvanized Steel Strip
Galvanized steel strip is a narrow steel product made from cold-rolled steel that has been coated with a layer of zinc through a hot-dip galvanizing process. The zinc coating protects the steel from corrosion and improves durability in industrial and construction applications.
Galvanized steel strip is widely used in:
Steel pipe and tube manufacturing
Cable trays and cable armoring
Metal profiles and channels
Automotive components
Door and window frames
Electrical cabinets and enclosures
Metal stamping and fabrication
It is commonly used as raw material for continuous forming and industrial processing.
Product Description Typical Use
Galvanized Steel Coil Wide coil (600โ1500 mm) Roofing sheets, large-scale forming
Galvanized Steel Strip Narrow width strip Pipe production, stamping, metal parts
Steel strips are usually produced by slitting galvanized steel coils into narrower widths.
Typical thickness ranges include:
Thickness Application
0.12 โ 0.30 mm Light industrial parts
0.30 โ 1.0 mm Pipe and tube production
1.0 โ 2.5 mm Structural components
2.5 โ 4.0 mm Heavy industrial applications
Thickness can be customized based on production requirements.
Galvanized steel strips are usually produced in narrow widths.
Typical width range:
20 mm โ 600 mm
Common widths include:
32 mm
50 mm
76 mm
100 mm
125 mm
200 mm
Custom slitting widths are available according to customer specifications.
Zinc Coating Application
Z40 โ Z60 Indoor industrial use
Z80 โ Z120 Standard manufacturing
Z140 โ Z180 Outdoor and humid environments
Z275 High corrosion resistanceThe required coating weight depends on environment and service life requirements.
Common surface finishes include:
Regular spangle
Minimized spangle
Zero spangle
Oiled surface
Dry surface
Anti-fingerprint coating
The surface condition can be selected depending on processing and forming requirements.
Major buyers include:
Steel pipe manufacturers
Metal profile producers
Cable tray manufacturers
Electrical equipment manufacturers
Hardware factories
Steel distributors and wholesalers
Many manufacturers purchase large volumes of galvanized strip for continuous production lines.
Yes. Galvanized steel strip is commonly used for manufacturing:
Round steel pipes
Square and rectangular tubes
Fence pipes
Structural tubes
The strip is formed and welded through pipe-making machines.
Common international standards include:
ASTM A653
EN 10346
JIS G3302
GB/T 2518
These standards define coating weight, mechanical properties, and tolerances.
Typical coil weights include:
3 โ 5 metric tons (standard industrial processing)
5 โ 8 metric tons (large manufacturing lines)
Coil weight can be customized depending on machine capacity and handling equipment.
Export packaging usually includes:
Waterproof paper protection
Plastic film covering
Steel outer sheet protection
Steel strapping
Wooden pallets or skids
This prevents moisture damage and deformation during transportation.
Yes. Galvanized steel strip can be processed through:
Roll forming
Stamping
Bending
Welding
Slitting
Profiling
It is widely used in automated production lines and metal fabrication processes.
Material Coating Corrosion Resistance
Cold Rolled Steel Strip No coating Low
Galvanized Steel Strip Zinc coating High
Galvanized strip is preferred for applications requiring corrosion resistance and longer service life.
Key factors include:
Stable zinc coating thickness
Accurate slitting width tolerance
Smooth strip edges
Consistent coil weight
Reliable export packaging
Stable bulk supply
Most industrial buyers prefer direct manufacturers with strong production capacity.
