Overview
Oiled galvanized steel coil is a high-performance steel product featuring a zinc coating for corrosion resistance and a light oil layer to prevent scratches and oxidation during transport and processing. It combines the strength of steel with enhanced surface protection, making it ideal for industries requiring durable and long-lasting materials. The oil layer, typically mineral-based, also facilitates stamping, bending, and other forming processes by reducing friction. This product is standardized under international codes (e.g., ASTM A653) and is available in various thicknesses and coating weights to suit specific applications.
Physical and Chemical Properties
The steel base provides structural integrity, while the zinc coating (usually 20-275 g/m²) acts as a sacrificial anode to prevent rust. The oil film, often 0.5-3 g/m², is non-reactive and evaporates during welding or painting. Key metrics include spangle size (regular, minimized, or spangle-free), adherence to ASTM or JIS standards, and passivation treatments (e.g., chromate-free options for eco-sensitive applications). The oil’s viscosity is optimized to balance protection and cleanability.
Main Applications
In construction, oiled galvanized coils are used for roofing, wall cladding, and structural components due to their weather resistance. The automotive sector relies on them for underbody panels and trim parts. Manufacturers of home appliances (e.g., washing machines, air conditioner housings) and metal furniture also prioritize this material for its aesthetic finish and formability. Agricultural equipment and electrical enclosures benefit from its durability in harsh environments.
Safety and Storage
Store coils horizontally on padded racks to prevent edge damage and avoid stacking heights exceeding supplier recommendations. The oil film may attract dust; cover coils during long-term storage. Workers should use PPE (gloves, goggles) when handling cut edges to avoid injuries from sharp metal. Dispose of oil-contaminated waste per local environmental regulations. For welding, ensure proper ventilation to disperse any oil vapors.
B2B Procurement Guide
Specify zinc coating class (e.g., G60, Z180), oil type (e.g., dry lubricant for painted surfaces), and tolerances for thickness/width. Request mill test certificates to verify compliance with standards like EN 10346. Compare suppliers based on capacity (minimum order quantities), lead times, and value-added services (slitting, blanking). For international shipments, confirm packaging (waterproof wrapping, steel strapping) to prevent transit damage. Bulk buyers may negotiate discounts for contracts exceeding 500 metric tons annually.
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