Chromated and Oiled G40-G90 Hot Dipped Galvanized Steel Strip ASTM A653 JIS G3302

1．Product Overview

Hot dipped galvanized steel strip is widely used in welded pipe manufacturing, construction accessories, automotive components, storage systems, home appliance parts, and general industrial fabrication.

The steel strip is continuously hot dip galvanized to provide corrosion resistance and stable surface quality for forming, welding, bending, and roll forming applications.

Chromated and oiled surface treatments help improve storage stability and transportation protection under humid and long-distance shipping conditions.

2．Technical Solution

The galvanized strip is produced using commercial and structural steel grades including SGCC, DX51D+Z, Q195, Q235, and Q345.

The zinc coating range of 40–450g/m² supports different corrosion resistance requirements from indoor fabrication to outdoor construction environments.

Available spangle types include regular, big, small, and zero spangle to match appearance and processing requirements.

Surface treatment options such as chromated, passivated, and oiled surfaces help reduce white rust risk during transportation and storage.

3．Specifications

4．Application

The galvanized steel strip is suitable for greenhouse pipes, gas pipes, heating pipes, roof reinforcement parts, roof grilles, appliance panels, kitchen equipment, automotive anti-corrosion components, packaging materials, and refrigeration processing equipment.

It is commonly used in roll forming lines, welded pipe production, and narrow-width galvanized strip processing.

5．Processing

• The strip can be supplied in slit coil form according to required width specifications.
• It supports welding, bending, punching, stamping, roll forming, profiling, and general fabrication processing.
• Chromated and oiled surfaces improve processing stability and reduce storage oxidation risk.
• Standard export seaworthy packing supports container shipment and long-distance transportation.

6．Advantages

• The G40–G90 zinc coating provides reliable corrosion protection for industrial and construction applications.
• Multiple steel grades support both forming and structural requirements.
• The 30–1500mm width range supports narrow strip and wide strip applications.
• Regular, big, small, and zero spangle finishes are available for different appearance needs.
• Chromated and oiled surfaces improve storage performance during export shipment.
• Stable coating adhesion supports welding and downstream fabrication.

7．How to Choose

• Choose SGCC or DX51D+Z for general forming and fabrication applications.
• Choose Q235 or Q345 for higher strength structural applications.
• Choose higher zinc coating levels for humid, outdoor, or corrosive environments.
• Choose zero or minimized spangle for painting and appearance-sensitive applications.
• Choose chromated and oiled surface treatment for better transportation and storage protection.
• Confirm thickness, width, coating weight, spangle type, and processing requirements before order confirmation.

8．FAQ

Q1．What is the available zinc coating range
The available zinc coating range is 40–450g/m², including G40–G90 coating classes.

Q2．What surface treatments are available
Chromated, passivated, and oiled surface treatments are available.

Q3．Can the strip be supplied in narrow widths
Yes. Slitting service is available according to customer width requirements.

Q4．What industries commonly use this product
Construction, welded pipe manufacturing, automotive parts, home appliances, packaging, and refrigeration industries commonly use this product.

Q5．What spangle types are available
Regular spangle, big spangle, small spangle, and zero spangle are available.