Tel:+8618937709856
cherry@zzkunseng.com 18937709856 WhatsApp
ZZKUNSENG STEEL Reputable Business
EN ZH ES FR AR
Request a quote
Galvanized Steel Coil Supplier | DX51D+Z, SGCC, Z30-Z275 | 12 Years Export Experience

GI Coils

Galvanized Steel Coil Supplier | DX51D+Z, SGCC, Z30-Z275 | 12 Years Export Experience

Looking for reliable galvanized steel coil supplier? We supply DX51D+Z, SGCC, S350GD+Z with Z120-Z275 zinc coating. 12 years in steel coils, export since 2018. Get quote today.

Indicative price Please contact us for more details Final price depends on quantity, tolerance and destination port.
Request a quote WhatsApp
  • EN 10204 3.1 mill test certificate with every shipment
  • SGS / BV pre-shipment inspection on request
  • FOB / CFR / CIF — tell us your discharge port

Product overview

Galvanized coils represent the core product category within our coated steel portfolio, boasting the highest sales volume and the broadest customer base. Compared to color-coated or Galvalume (Al-Zn coated) coils, galvanized coils are clearly positioned: they offer an optimal balance of cost and performance, excellent versatility for further processing, and reliable supply. For customers involved in applications such as roof/wall panel profiling, construction hoarding, or general decorative use, they serve as a pragmatic choice—enabling effective cost control while ensuring essential corrosion resistance.

Quick Reference for Technical Specifications
ItemParameter RangeCommon Usage / Notes
Thickness0.12 – 6.0 mm 0.3–0.6 mm is typical for roofing/cladding panels and construction hoarding
Width600 – 1500 mm1000, 1200, and 1250 mm are the most common widths
Zinc Coating WeightZ30 – Z275 g/m²Z120/Z180 is common for hoarding; Z275 is recommended for roofing applications requiring higher corrosion resistance
Coil Inner Diameter508 mm / 610 mmStandard specifications
Coil Weight 3 – 20 tonsCustomizable based on client requirements
Surface SpangleRegular, Small, or Zero SpangleZero spangle is better suited for subsequent color coating or applications requiring high surface uniformity
Surface Treatment Passivation, Oiling, Anti-fingerprint, etc.

Selected based on specific transportation and storage conditions

Grade Designation System
Standard System Common GradesTypical Application/Purpose
European Standard (EN) DX51D+Z, DX52D+Z, DX53D+ZDX51D is a general-purpose grade for bending and forming; most frequently requested in export inquiries
Structural GradesS250GD+Z, S350GD+ZFor structural components requiring specific strength levels
Japanese Standard (JIS) SGCC, SGCHCommonly found in Southeast Asian and Middle Eastern markets

American Standard (ASTM)

A653， A781，A36Applicable to markets in the Americas

Matching Customer Use Cases
Intended UseRecommended Specifications Rationale
Roofing/Siding Panels (General Industrial Buildings/Temporary Structures)0.3–0.5 mm, Z120–Z180, DX51D+ZCost-effective; suitable for typical outdoor service life
Construction Hoarding/Fencing Panels0.3–0.5 mm, Z120–Z180, Pre-painted Substrate or Bare SteelLimited service life; high zinc coating weight is unnecessary
Substrate for Pre-painting (Color Coating)0.3–0.6 mm, Z120–Z180, Smooth Surface (Zero-spangle)

Surface quality is critical for the final appearance of the paint coating

Decorative Applications (Silvery-white Metallic Look)0.4–0.8 mm, Regular Spangle, Z30-Z100

The spangle pattern itself serves a decorative purpose

Selection Criteria: Galvanized vs. Galvalume (Aluzinc) Coils

  • Choose galvanized coils when: budget is the primary concern; the environment is a typical atmospheric setting; the material is intended for hoarding/fencing or temporary structures; or the steel will be subsequently color-coated and does not require extreme corrosion resistance from the substrate.
  • Choose Galvalume (Aluzinc) coils when: the project is located in a coastal area or an environment with industrial pollution; the roof requires a longer maintenance interval; there is a need for heat resistance (e.g., near high-temperature equipment); or you are willing to pay a premium for a longer service life.

Supply and Services 

  1. Original manufacturer warranty certificates and zinc coating weight test reports are available. 
  2.  We provide recommendations on steel grades and zinc coating weights tailored to your specific application, helping you avoid unnecessary costs from "over-specification." 
  3.  Slitting and cut-to-length processing services are available. 
  4.  Export packaging complies with maritime shipping standards; 
  5. We also facilitate third-party inspections by organizations such as SGS or BV.


Related products

All products

Ask for a quotation on this product

Request a quote WhatsApp

Send quantity, destination port and required certificates — we reply within one working day.

WhatsApp