Galvanizing is an effective metal corrosion protection process that involves immersing steel products in molten zinc to form a dense zinc-iron alloy layer on their surface, thereby preventing steel rust. Below are the relevant standards, characteristics, and application fields of galvanization:

I. Relevant Standards

1. ISO 1461: The international standard for hot-dip galvanizing established by the International Organization for Standardization, specifying the thickness requirements and testing methods for hot-dip galvanized coatings on steel products.
2. GB/T 13912-2002: The Chinese national standard "Metal Coatings - Technical Requirements and Test Methods for Hot-Dip Galvanized Steel Components", which details the process flow and technical indicators for hot-dip galvanization.
3. ASTM A123/A123M: The standard set by the American Society for Testing and Materials, applicable to hot-dip galvanizing treatments for infrastructure such as roads and bridges.

II. Characteristics

1. Outstanding Corrosion Resistance: The zinc layer effectively isolates moisture and oxygen from the air, preventing steel from oxidizing and rusting.
2. Long Service Life: In normal atmospheric conditions, the galvanized layer can protect steel for over 20 years.
3. High Reliability: Even if locally damaged, the zinc layer can still provide cathodic protection to exposed steel bases.
4. Cost-Effective: Compared with other anti-corrosion measures, galvanizing offers higher cost-effectiveness.
5. Environmentally Friendly: Zinc is a recyclable resource, and the galvanizing process generates minimal waste.

III. Application Fields

1. Construction Industry: Such as steel structure houses, fences, door and window frames, etc.
2. Electric Power Industry: Including high-voltage transmission towers, power poles, and substation equipment housings, etc.
3. Transportation: Automobile chassis parts, highway guardrails, bridge components, etc.
4. Agricultural Machinery: Tractors, combine harvesters, and other agricultural equipment components.
5. Home Appliances: Refrigerators, washing machines, and other home appliance casings and internal supports.

6. Telecommunication Facilities: Base station towers, antenna support rods, etc.

Galvanizing technology, due to its excellent protective effect and wide range of applications, plays an irreplaceable role in many industries, providing strong assurance for the durability and safety of various products.