Galvanized Mild Steel

Galvanized mild steel is a type of carbon steel that has a protective layer of zinc on the surface to prevent rust and corrosion. It includes hot-dipped galvanized mild steel and electro-galvanized mild steel. The zinc protective layer significantly extends the service life of the steel, making it an ideal choice for outdoor and industrial applications. Wanzhi Steel, as a galvanized mild steel supplier, provides GI mild steel in different sizes and shapes, and accepts customization. Welcome to contact us for details.

Galvanized mild steel Specification

Item	Galvanised mild steel
Place of Origin	Shandong, China
Standard	AISI/ ASTM/GB /JIS
Delivery Time	22-28 days
Surface	Zinc Coated
Zinc Coating	30g-275g/m2
Spangle	Regular spangle,small spangle, big spangle, no-spangle
Thickness	0.1 – 120 mm
Length	6m-12m
Package	In bundles with steel strips or packed in wooden pallets
Price term	CIF CFR FOB EXW
MOQ	5 Tons
Payment Methods	TT 30% prepaid
MOQ	5 Tons
Transportation	By sea

What is galvanized mild steel?

Mild steel itself is a low-carbon steel (typically 0.05 %–0.25 % carbon), which has excellent weldability, formability, and strength at a low cost. When combined with a zinc coating, mild steel has become one of the most widely used materials in the construction, automotive, and manufacturing industries.

Chemical composition

• Before galvanizing: Composition of mild steel is Carbon (C) 0.05–0.25%, Manganese (Mn) 0.30–0.60%, Phosphorus (P) ≤ 0.04%, Sulfur (S) ≤ 0.05%, and Iron (Fe).
• After galvanizing: The steel receives a zinc layer (Zn) with a thickness of 30–150 µm, depending on the process (hot-dip galvanizing provides thicker coatings).

Weight calculation formula

Weight of galvanized steel pipe

Weight (kg/m) = (Outer diameter (mm) – Wall thickness (mm)) × Wall thickness × 0.02466÷1.03

Weight of galvanized steel sheet/plate

Weight (kg)=Length (m)×Width (m)×Thickness (mm)×7.85×1.03

Weight of galvanized steel coil

Weight (kg)=Width (mm)×Thickness (mm)×Length (m)×7.85×1.03

Advantages of Galvanized Mild Steel

• Corrosion resistance: The galvanized layer can be used as a protective layer to isolate the outside world and protect the steel base from rust in harsh environments.
• Economical and efficient: The rust resistance makes it have a longer service life and reduces the replacement cost.
• High strength and durability: Suitable for structural applications, prestressed buildings such as building beams.
• Easy to manufacture: High cost performance, easy to weld, bend and process, and can be used as a substrate for further processing.
• Beautiful: The silver surface is simple and elegant, and blends well with the surrounding environment. The surface can be printed or painted to achieve decorative effects.

Application

• Steel structure frames, roofs, walls, fences, railings, etc.
• Infrastructure such as bridges, highway guardrails, traffic sign brackets, etc. Meet the requirements of building structures for mechanical properties.
• Farm fences, livestock sheds, irrigation system pipes, agricultural machinery parts, etc. Strong weather resistance, suitable for long-term outdoor use. Low cost, suitable for large-scale applications.
• Automobile chassis, body structure parts, trailer frames, containers, etc. The coating protects them from road salt spray and rain erosion.
• Transmission towers, utility poles, pipeline brackets, solar brackets, etc., thanks to their excellent corrosion resistance.
• Mechanical housings, equipment brackets, tool boxes, storage shelves, etc. Can be stamped and welded.
• Galvanized steel pipes are used for water supply, drainage, fire protection systems, etc. The zinc layer prevents the inner wall of the pipe from rusting, and the strength and pressure resistance meet the requirements of pipeline transportation.

How is it produced?

Galvanizing method

• Hot-dip galvanizing

Degreasing (removing oil/dirt) → pickling (removing rust) → fluxing (preventing oxidation before dipping) → continuous immersion in molten zinc → cooling and inspection.

• Electro galvanizing

This process uses the principle of electrolysis to achieve a relatively thinner and smoother zinc coating (5-30 microns). Suitable for precision parts requiring tight tolerances.

HDG mild steel strip production video

Hot-dipped galvanized mild steel coil production video

Galvanised mild steel Manufacturer- Wanzhi Steel

Galvanized mild steel is a versatile, durable, and cost-effective material used in a wide range of industries.

Wanzhi Steel is a leading manufacturer of galvanized mild steel products, specializing in the production of high-quality GI mild steel, GL, PPGI, providing plates, strips, tubes (round, square, rectangular), coils, and structural profiles (angles, channels, I-beams), with a wide range of thicknesses and lengths for you to choose from, with strict quality control, ISO 9001 certified, SGS tested.

Factory direct sales, favorable prices. If your project requires mild carbon galvanized steel, welcome to contact Wanzhi Steel to send your size requirements.