Pre-Painted Galvanized Steel Coil
Color finished galvanized coil that leaves the roll former ready to install
Specifications
GI/PPGI Steel Coil
Galvanized Steel Strip Slit from Hot Dipped Coil
Narrow zinc coated strip slit to your width from full width galvanized master coil
Galvanized steel strip is narrow zinc coated strip slit from full width hot dipped or electro galvanized master coil. Tube mills, roll forming lines and profile shops specify it when the finished section is far narrower than a standard coil and the edge quality has to be consistent enough to feed a forming head without weaving. decoiling at the supply end removes the scrap edge, the storage of leftover coil width and the second handling step that comes with buying master coil and cutting it down locally. Base steel runs G250, G350, G450, G550, A36, SS400, S275jr and A653 with zinc coating from G20 through Z350.
- Product Name — Galvanized Steel Strip
- Also Known As — Slit galvanized coil GI strip
- Steel Grade — G250 G350 G450 G550 A36 SS400 S275jr A653
- Zinc Coating — G20 G30 G40 G60 G90 Z150 Z275 Z350
- Galvanizing Technology — Hot dipped or electro
Why It Is Specified
Key Benefits of Galvanized Steel Strip
Width Cut Before It Reaches Your Line
Strip arrives at the running width of your tube mill or roll former, so there is no in house decoiling pass and no leftover side trim to store or scrap.
Structural and Commercial Grades Both Available
G250 through G550 cover the structural end while A36, SS400, S275jr and A653 cover commercial and structural substitutions, so one supplier handles a mixed product range.
Zinc Weight Chosen for the Exposure
Coating runs G20, G30, G40, G60, G90, Z150, Z275 and Z350. Indoor framing does not need the same zinc as an outdoor greenhouse or solar frame section.
Two Galvanizing Routes
Hot dipped strip suits heavier coating and outdoor duty while electro galvanized strip gives a smoother thinner layer where the part is painted or formed tightly.
Coated Edges Stay Protected in Forming
Slit strip is delivered coiled and edge protected so the zinc surface is not scored before it reaches the forming head, which is where most coating damage happens.
Problems It Solves
What This Material Removes From Your Process
Buying Coil Wider Than the Part Needs
A master coil bought for one narrow profile leaves width you pay for, store and eventually sell as offcut. Slit strip is supplied at the running width so nothing is left over.
Running a decoiling Pass in House
decoiling locally ties up a line, a crane and floor space for coil handling. The strip arrives slit, wound and strapped ready to load onto the decoiler.
Coating Damaged Before Forming
Every extra handling and decoiling pass is another chance to score the zinc. Fewer passes between the galvanizing line and the forming head means the coating reaches the part intact.
Post Galvanizing the Finished Section
Hot dip galvanizing a formed part adds a subcontractor, transport and distortion risk. Forming from pre coated strip removes that stage entirely.
Application Scenarios
Where It Is Used
Tube and Pipe Mill Feedstock
Strip slit to the exact developed width needed to roll and weld a round, square or rectangular section without trimming at the mill.
Roll Formed Framing Profiles
Studs, tracks, purlins and top hat sections formed from high strength G450 or G550 strip where section weight matters.
Greenhouse and Solar Structure Members
Outdoor frame members rolled from heavier Z275 or Z350 coated strip where the structure is exposed for its whole service life.
Cable Tray and Duct Manufacturing
Perforated and folded trays and ducting where a zinc coated strip removes the need to galvanize the finished part.
Strapping Banding and Small Bracketry
Narrow strip for banding, ties, brackets and clips where the part is stamped and folded straight off the coil.
Who It Is For
Buyers Who Specify This Product
- Tube mill operators buying strip at the developed width of the section they roll
- Roll forming shops producing framing profiles and purlins from high strength coated strip
- Greenhouse and solar mounting fabricators specifying heavier zinc coating for exposed members
- Cable tray and ducting manufacturers buying strip that removes a post galvanizing step
- Stamping shops running brackets clips and small folded parts from narrow coil
- Steel service centers supplying slit coated strip to regional fabricators
Technical Data
Specifications and Technical Features
Values below come from the product data published by Shandong Tianyu Metal Products. Confirm the exact grade and size against your order.
| Product Name | Galvanized Steel Strip |
|---|---|
| Also Known As | Slit galvanized coil GI strip |
| Steel Grade | G250 G350 G450 G550 A36 SS400 S275jr A653 |
| Zinc Coating | G20 G30 G40 G60 G90 Z150 Z275 Z350 |
| Galvanizing Technology | Hot dipped or electro |
| Form | Slit strip in coil |
| Width | Slit to customer requirement |
| Processing Service | decoiling to width |
| Place of Origin | China |
| Supply | China factory direct sales |
| Certificate | ISO9001 BV SGS RoHS and mill test certificate |
Technical Features
- cut to width from hot dipped or electro galvanized master coil
- Steel grades G250 G350 G450 G550 A36 SS400 S275jr and A653
- Zinc coating G20 G30 G40 G60 G90 Z150 Z275 and Z350
- Hot dipped galvanizing for heavier coating and outdoor duty
- Electro galvanizing for a thin even layer under paint
- Supplied in coil form with edge protection
- Produced in China and shipped with ISO9001 BV SGS and RoHS documents
Materials
- Structural galvanized base steel in G250 G350 G450 and G550
- Commercial and structural substitutions in A36 SS400 S275jr and A653
- Zinc coating applied by hot dip or electro galvanizing
Certification
- ISO9001
- BV
- SGS
- RoHS
- Mill test certificate supplied with each shipment
Manufacturing
How It Is Made and Processed
Cold rolling of the base steel to coil
Hot dip or electro galvanizing to the ordered zinc coating
Recoiling of the galvanized master coil
decoiling to the ordered strip width
Rewinding each slit mult onto its own coil
Edge protection strapping and eye or side wrapping
Marking and loading for export
Quality Control
Checks Before It Ships
- Steel grade confirmed against the ordered G or A designation
- Zinc coating class checked against the ordered G or Z code
- strip width and edge condition inspected on each mult
- Coil surface examined for coating damage after decoiling
- Packing and strapping checked before loading
- Mill test certificate issued for the ordered grade and coating
Customization
What We Can Change on Your Order
- Strip slit to the width your forming line runs
- Steel grade selected from G250 through G550 or A36 SS400 S275jr A653
- Zinc coating specified from G20 through Z350
- Hot dipped or electro galvanizing route chosen per order
- Coil weight and inner diameter matched to your decoiler
- Mult arrangement set so a full master coil is split the way you want it
Comparison
Galvanized Steel Strip Against the Alternatives
| Full width galvanized master coil | Strip arrives at the running width so there is no in house decoiling pass and no residual coil width sitting in stock. |
|---|---|
| Black strip galvanized after forming | Pre coated strip removes the post galvanizing subcontract stage along with its transport time and the distortion risk on a thin formed section. |
| Stainless steel strip | Zinc coated strip covers outdoor structural duty at a far lower material cost where the environment does not demand a stainless grade. |
Use Guide
Specifying Handling and Welding Notes
- Give the developed width your section needs rather than a nominal width so the strip feeds without trimming
- Choose a heavier zinc class such as Z275 or Z350 for anything permanently outdoors
- Pick electro galvanized strip where the part is painted afterwards and the coating has to stay thin and even
- Confirm your decoiler inner diameter and maximum coil weight before the coils are wound
- Touch up cut ends and drilled holes on exposed structures because decoiling exposes bare edges
- Store coils indoors and off the floor because zinc surfaces stain when moisture is trapped between wraps
Questions Buyers Ask
Galvanized Steel Strip FAQ
Can you slit to any width we need?
Strip is slit to your requirement. Send the developed width and the coil inner diameter and weight your line takes and we will confirm the mult arrangement.
Which zinc coating should we specify for outdoor frames?
Heavier classes such as Z275 or Z350 are usual for permanently exposed members, while G20 to G60 suits indoor and painted work.
What is the difference between hot dipped and electro galvanized strip?
Hot dipping gives a heavier zinc layer for outdoor duty. Electro galvanizing gives a thinner, more even layer that suits painting and tight forming.
Which grades do you carry for structural profiles?
G250, G350, G450 and G550 for structural work, plus A36, SS400, S275jr and A653 where a drawing calls those designations.
Do you supply a mill test certificate with the strip?
Yes. The certificate states the ordered steel grade and the zinc coating class, and ISO9001, BV, SGS and RoHS documents are available.
How is the strip packed so the coating is not marked?
Each slit coil is rewound with edge protection and strapped before wrapping, which keeps the zinc surface clean through handling and shipping.
Can we mix grades and coatings on one order?
Yes. Different grades and coating classes can run on the same order as long as each width and specification is listed separately.
Same Range
Related Products
Galvanized Steel Coil
Full width zinc coated coil in structural and commercial grades for roll forming lines
SpecificationsGo Deeper
Industries and Guides Related to This Product
Construction and Infrastructure
Construction and infrastructure buyers order steel by the part it becomes: mild steel plate for base plates gussets and stiffeners
Read more
Construction Machinery and Agriculture
One loader or one tractor needs four different steels and most fabrication shops buy them from four different suppliers. The struc
Read more
Power Generation and Energy
Energy projects are audited on documents as much as on steel. A boiler header, a cooling water line, a coal transfer chute and a s
Read moreNeed a Price on Galvanized Steel Strip
Send the grade, thickness, width and quantity you need together with your destination port. A cutting list or drawing gets you a firmer number.