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Galvanized H-Beam
1. Product Overview
Galvanized H-beam is a structural steel material made by applying a zinc coating onto ordinary H-beams through hot-dip galvanizing process. It combines the excellent mechanical properties of H-beams with the anti-corrosion protection of zinc coating, featuring strong load-bearing capacity, long service life, and low maintenance costs. This steel product is widely used in industrial plants, large public buildings, bridge engineering, and other structural support systems in outdoor and corrosive environments, providing long-term reliable protection for building structures.

2. Key Features
(1)The hot-dip zinc coating provides comprehensive anti-corrosion protection for H-beams, with coating thickness typically reaching 65-300μm. In corrosive environments like humid and industrial atmospheres, the zinc layer effectively resists corrosion medium erosion, achieving service life over 30 years and significantly reducing maintenance costs.
long-term anti-corrosion H-beam, hot-dip galvanized protection, weather resistant structural steel, industrial environment suitable, low maintenance cost.
(2)H-beam's scientific cross-sectional shape provides strong bending and compression resistance. Galvanizing treatment doesn't affect its mechanical properties, maintaining excellent load-bearing characteristics suitable for large-span, heavy-load structural applications.
(3)Galvanized H-beams are manufactured according to international standards with precise dimensions and good interchangeability. With pre-applied anti-corrosion treatment, they can be directly installed on site, reducing construction processes, improving project efficiency, and shortening construction periods.
(4)The zinc coating gives H-beams an attractive silver-gray appearance without additional painting. Zinc is 100% recyclable, meeting green building requirements, and causes no environmental pollution during production and installation, making it a sustainable choice.

Parameter | Specification Range | Standard |
Steel Grade | Q235B, Q355B, ASTM A36, A572 Gr.50 | GB/T, ASTM |
Model Series | HW (Wide Flange), HM (Medium Flange), HN (Narrow Flange) | GB/T 11263 |
Flange Width | 100mm - 400mm | B dimension |
Web Height | 100mm - 400mm | H dimension |
Flange Thickness | 6mm - 45mm | - |
Web Thickness | 4mm - 20mm | - |
Length | 6000mm - 12000mm | Custom lengths |
Zinc Coating Thickness | 65μm - 300μm | ASTM A123 |
Zinc Coating Mass | 460 g/m² - 2100 g/m² | Double side total |
Tensile Strength | 370 MPa - 630 MPa | ASTM A370 |
Yield Strength | 235 MPa - 355 MPa | ASTM A370 |
Elongation | 20% - 26% | in 50mm |
Surface Quality | Smooth, uniform zinc coating | Visual inspection |
Straightness | ≤1mm/m | Total ≤10mm |
Weight Tolerance | ±5% of theoretical weight | - |
4.Application Scenarios
(1)Industrial Plants & Storage Facilities
Used for main structures, platform beams and columns, equipment supports in industrial plants. The corrosion resistance of galvanized H-beams adapts to chemicals and humid conditions in industrial environments, ensuring long-term structural safety.
(2)Large Public Buildings & Stadiums
Applied in airport terminals, convention centers, stadiums, and other large-span buildings. Their excellent load-bearing capacity supports large space designs, while galvanized protection ensures long-term structural integrity in public environments.
(3)Bridge Engineering & Transportation Facilities
Used in pedestrian bridges, highway bridges, rail transit supports. The zinc coating provides reliable corrosion protection against rain, snow, deicing salts, and other corrosive factors, ensuring safety and durability of transportation infrastructure.

5.FAQ
Q1: How long can the zinc coating on galvanized H-beams last?
A1: In general atmospheric environments, 85μm zinc coating lasts over 30 years; in industrial or coastal environments, thicker coatings (≥120μm) are recommended with regular inspection and maintenance to extend service life.
Q2: Can galvanized H-shaped steel be welded?
A2: Yes, but requires special processes. Remove zinc coating from welding area before welding, use low-hydrogen electrodes, control heat input, clean and repair zinc coating promptly after welding to ensure quality and corrosion protection continuity.
Q3: How to select the appropriate H-shaped steel size?
A3: Select based on load requirements, span dimensions, and usage environment. HW series for heavy columns, HM for beam-column members, HN for bending members. Specific specifications should be determined through structural calculations.
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