Gnee Steel (tianjin) Co., Ltd
+8615824687445

Wholesale Galvanized Steel Coil SGCC SGHC High Strength

Oct 27, 2025

Galvanized Steel Coil

 

Hot dipped galvanized coil combines the advantages of both materials. The composite material has the strength and plasticity of steel and a corrosion resistant coating, which has a wide range of uses in industrial fields such as construction, home appliances and automobiles.

 

Construction Engineering

 

‌1. Structural frame‌: Galvanized steel plate is used for load-bearing structures such as beams, columns, and purlins, providing high-strength and corrosion-resistant support. Light steel keels, roof protection panels, water retaining panels and other components extend the life of the building and reduce maintenance costs.

 

‌2‌. Decoration and protection‌: Detailed components such as doors, windows, and stair handrails are both beautiful and functional. Curtain wall support and exterior wall covering materials are suitable for strong coastal winds or industrial corrosion environments.

 

Transportation

 

1. Automobile manufacturing: body panels (such as ceilings, door panels), chassis components (front longitudinal beams, anti-collision bars), etc., use galvanized layers to resist road salt spray corrosion. Key parts such as fuel tanks and water tanks are galvanized to improve weather resistance.

 

2. Transportation infrastructure: bridge steel components, highway enclosures, etc., meet the needs of large-span load-bearing and long-term outdoor corrosion protection. Emergency bridges are modularly assembled, quickly built and adaptable to complex environments.

 

Industrial equipment

 

‌1. Heavy machinery: Steel frames of boiler rooms in power plants, crane beams in rolling mills, etc., which can withstand high temperatures, acidic environments and heavy loads. Containers, ship partitions, etc., can resist marine salt spray erosion.

 

‌2. Electricity and home appliances: Electrical cabinets and instrument panel shells, which can achieve electromagnetic shielding and anti-corrosion integration through galvanizing. The shells and internal reinforcements of home appliances such as washing machines and refrigerators can extend their service life.

Galvanized Steel Coil

Civil and municipal

‌1. Furniture and daily necessities‌: desk stands, shelves, etc., with both structural strength and lightweight characteristics. Sinks and kitchen utensils meet the rust-proof requirements in humid environments.

‌2. Public facilities‌: municipal facilities such as guardrails, street light poles, and trash cans, reducing the frequency of long-term maintenance. In the renovation of historical buildings, antique galvanized steel is used to achieve the integration of new and old structures.

  • Buyer's Guide

Environmental conditions Recommended zinc layer thickness Recommended steel grade
Normal indoor environment 60-90g/m² DX51D+Z
Coastal industrial area 180-220g/m² S350GD+Z
Chemical park 275g/m²+chromic acid treatment HX420LAD+ZAM

 

Name

Galvanized Coil

Standard

EN10147,EN10142,DIN17162,JIS G3302,ASTM A653,JISG3302,ASTM A653M, EN10327,DIN17162,EN10142,EN10292

Grade

DX51D,DX52D,DX53D,DX54D,S220GD,S250GD,S280GD,S350GD,S350GD,S550GD, SGCC,SGHC,SGCH,SGH340,SGH400,SGH440,SGH490,SGH540,SGCD1,SGCD2,SGCD3, SGC340,SGC490,SGC570,SQ CR22(230),SQ CR22(255),SQ CR40(275),SQ CR(340),SQ CR80(550),CQ,FS,DDS,EDDS,SQ CR33(230),SQ CR37(255),SQ CR40(275),SQ CE50(340),SQ CR80(550) or Customer's Requirement

Thickness

0.12-3.00mm or customer's requirement

Width

100mm-1500mm according to customer's requirement

Type of Coating

Hot Dipped Galvanized Steel(HDGI)

Zinc Coating

30-275g/m²

Surface Treatment

Passivation(C),Oiling(O),Lacquersealing(L),Phosphating(P),Untreated(U),Galvanized,PVC,Black and color painting,transparent oil,anti rust oil

Packing

Water proof paper is inner packing,galvanized steel or coated steel sheet is outer packing,side guard piate,then wrapped by seven steel belt or according to customer's requirement