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Galvanized Steel · Form 01 of 02

GP Sheets

Galvanized plain sheets for ducting, enclosures and fabrication. MRP Enterprises supplies GP (galvanized plain) sheets — also ordered as GI sheets — for HVAC ducting, electrical enclosures and cable management, appliance parts and general fabrication. Sheets are quoted against coating mass, thickness, size, spangle, surface treatment and producer preference.

Also ordered as: GP sheet, GI sheet, galvanized sheet, galvanized plain sheet, galvanized iron sheet, GPSP sheet, zinc coated sheet

GP SHEETS

Specifications

GP Sheets — specification at a glance

Reference parameters for enquiry and quotation. Exact supply is confirmed against your specification.

Specification

GP Sheets
MaterialHot-dip zinc-coated steel
FormSheet, cut to length
StandardIS 277
CoatingZ120, Z180, Z275 and other classes as specified (g/m², both sides)
SpangleRegular, minimised or zero spangle
SurfacePassivated or unpassivated; oiled or dry; skin-passed (GPSP)
DimensionsThickness × width × length
DocumentsMill test certificate on request, subject to source

Grades & typical use

Reference
Z120Indoor fabrication, panels and components with further painting
Z180HVAC ducting and general-purpose galvanized work
Z275Longer service life, outdoor exposure, cable trays and structural sheet
GPSP (skin-passed)Smoother surface for painting and visible panels

Grades listed are procurement references. Supply is confirmed against your specification and the source available at the time of order.

Procurement information

Before you enquire

What to specify for GP sheets

  • Coating mass — for example Z120, Z180, Z275
  • Thickness (state whether it includes coating, if relevant), width and length
  • Base-metal grade — general, forming or structural
  • Spangle — regular, minimised or zero
  • Passivation and oiling
  • Skin-passed (GPSP) if required
  • Quantity, producer preference and delivery location

Have a BOQ, drawing or indent? Send it as it is — on WhatsApp or email.

HVAC ducting

Duct fabricators typically specify coating mass and thickness by duct size in the project specification. Send the specification sheet or BOQ with the quantity by thickness, and the requirement can be quoted as one consolidated order.

Painting and powder coating over GP

Where galvanized sheet is to be painted or powder coated, surface treatment matters. Passivation and oil can interfere with some paint systems; skin-passed GPSP gives a smoother finish. Tell us the finishing process and the sheet can be specified to suit it.

Grades & standards

Standard numbers define the product and grade; they do not by themselves certify a supply. State the edition and certificate requirement on your purchase order.

Applications

Typical requirements for GP Sheets

Where buyers typically specify this product. Confirm grade and dimensions against your engineering or project specification.

HVAC and air-distribution ducting
Electrical enclosures and distribution boxes
Cable trays and cable management
Appliance and white-goods components
Racks, storage and general fabrication
Roofing and cladding substrate

Brands / manufacturers

Producers for GP Sheets

Sources MRP can supply this product from. If your specification names a producer, include it in the enquiry.

Product lines buyers ask for by name

Brand names are trademarks of their respective owners. MRP Enterprises is an independent steel distributor; a manufacturer listed here indicates a source MRP can supply from, subject to the product, size and availability at the time of order. It does not imply authorised-dealer status.

FAQs

GP Sheets — common questions

Is GP sheet the same as GI sheet?

In trade usage, yes — both refer to hot-dip galvanized flat sheet. State the coating mass and standard to define the product.

What does Z275 mean?

A total zinc coating mass of 275 g/m² on both sides combined. Higher numbers mean a heavier coating.

What is GPSP?

Galvanized plain skin-passed sheet — galvanized sheet given a light rolling pass for a smoother, more uniform surface.

Request a quotation

Request a quote for GP Sheets

Share the product, grade, size and quantity — or attach your BOQ, drawing or specification on WhatsApp or email. A quotation is prepared against the actual requirement.

  • BOQs, drawings, indents and long product lists — send them as they are
  • Recurring monthly requirements quoted as a schedule
  • Specified producer, or approved alternatives where the specification allows

Request a quote

Five fields. Our sales team will call or email back.

Prefer to send a BOQ or drawing? Send it on WhatsApp