ASTM A653 JIS G3302 DX51D+Z Chromated Hot Dipped Galvanized Steel Strip

1．Product Overview

ASTM A653 JIS G3302 DX51D+Z chromated hot dipped galvanized steel strip is designed for welded pipe production, construction profiles, roofing accessories, home appliance components, automotive anti-corrosion parts, and general metal fabrication.

The product is produced by continuous hot dip galvanizing. The zinc coating provides corrosion protection for the steel substrate, while chromated and oiled surface treatment improves storage stability and transportation protection.

2．Technical Solution

The galvanized steel strip uses SGCC, DX51D+Z, Q195, Q235, and Q345 steel grades to support different forming, fabrication, and structural requirements.

The zinc coating range is 40–450g/m². Surface treatment options include chromated, passivated, oiled, and anti-fingerprint. Chromated and oiled treatment helps reduce white rust risk during storage and export shipment.

Available spangle options include regular, minimized, big, and zero spangle to match different appearance and downstream processing requirements.

3．Specifications

4．Application

This galvanized steel strip is suitable for greenhouse pipes, gas pipes, heating pipes, construction roof accessories, roof grilles, steel profiles, home appliance shells, kitchen utensils, automotive corrosion-resistant components, storage systems, refrigeration equipment, and general fabrication.

It is commonly used where steel strip requires corrosion resistance, stable coating quality, and reliable downstream processing performance.

5．Processing

• The strip can be supplied in slit coil form according to required width.
• It is suitable for pipe welding, roll forming, bending, stamping, cutting, and general fabrication.
• Surface treatment can be selected according to storage time, transport conditions, and processing requirements.
• Standard export packing supports container shipment and long-distance transportation.

6．Advantages

• The 40–450g/m² zinc coating range supports different corrosion protection requirements.
• The 0.15–3.80mm thickness range covers light fabrication and heavier strip applications.
• The 30–1500mm width range supports slitting for pipe, profile, and component production.
• Chromated and oiled surface treatment improves storage and transport protection.
• Regular, minimized, big, and zero spangle options meet different surface appearance requirements.
• Coil ID 508mm / 610mm is suitable for standard uncoiling and processing equipment.

7．How to Choose

• Choose DX51D+Z or SGCC for general forming and fabrication.
• Choose Q235 or Q345 when higher structural strength is required.
• Choose higher zinc coating levels for humid, outdoor, or more corrosive environments.
• Choose zero or minimized spangle for smoother surface appearance.
• Choose chromated and oiled surface treatment for better export storage and transportation protection.
• Confirm strip width, thickness, coil ID, zinc coating, spangle, and final processing method before production.

8．FAQ

Q1．What is this product used for
It is used for welded pipes, construction profiles, roofing accessories, home appliance parts, automotive parts, and general fabrication.

Q2．What zinc coating range is available
The available zinc coating range is 40–450g/m².

Q3．What surface treatments are available
Chromated, passivated, oiled, and anti-fingerprint surface treatments are available.

Q4．Can the strip width be customized
Yes. The strip can be slit according to required width within the available range.

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