DX51D DX52D SGC490 Grade 50 Hot Dipped Galvanized Steel Strip for Construction

Product Specification

DX51D DX52D SGC490 Grade 50 Hot Dipped Galvanized Steel Strip for Construction and Automotive Parts

1．Product Overview

Hot dipped galvanized steel strip is designed for construction parts, welded pipe production, packing materials, automotive corrosion-resistant components, home appliance parts, and general fabrication.

The product is manufactured through continuous hot dip galvanizing. The zinc coating protects the steel substrate from corrosion, while the available spangle and surface treatment options support different processing and appearance requirements.

2．Technical Solution

The galvanized steel strip uses DX51D, DX52D, SGCC, SGC490, and ASTM A653 Grade 50 steel grades for different forming and strength requirements.

The zinc coating range is 40–450g/m², allowing selection according to indoor, outdoor, humid, or more exposed service environments.

Surface treatment options include passivated, oiled, and anti-fingerprint. Passivation helps reduce white rust during storage, while oiling improves protection during transportation and further processing.

3．Specifications

4．Application

This product is suitable for greenhouse pipes, gas pipes, heating pipes, construction roof accessories, roof grilles, steel profiles, packing materials, home appliance shells, kitchen utensils, automotive corrosion-resistant parts, storage systems, and general metal fabrication.

It is commonly used where narrow-width galvanized steel requires stable coating quality, corrosion protection, 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 method.
• 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, packing, and component production.
• Multiple steel grades are available for forming, structural, and higher strength requirements.
• Regular, big, minimized, and zero spangle options meet different appearance needs.
• Passivated, oiled, and anti-fingerprint treatments support storage and processing stability.

7．How to Choose

• Choose DX51D or SGCC for general forming and fabrication.
• Choose DX52D when better forming performance is required.
• Choose SGC490 or ASTM A653 Grade 50 when higher strength is required.
• Choose higher zinc coating levels for humid, outdoor, or more corrosive environments.
• Choose passivated and oiled surface for better storage and transport protection.
• Confirm strip width, thickness, coil ID, coil weight, zinc coating, and final processing method before production.

8．FAQ

Q1．What is this galvanized steel strip used for
It is used for welded pipes, construction parts, packing materials, 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 steel grades are available

DX51D, DX52D, SGCC, SGC490, and ASTM A653 Grade 50 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 surface treatments are available
Passivated, oiled, and anti-fingerprint surface treatments are available.