Galvanized Bends

Galvanized Bends

Superior Corrosion Protection for Industrial and Structural Piping

Our Galvanized Bends are high-quality carbon steel fittings engineered to provide exceptional durability and resistance to environmental degradation. By applying a protective zinc coating through advanced galvanizing processes, we transform standard carbon steel bends into long-lasting components capable of withstanding harsh outdoor and industrial environments.

These bends are the ideal solution for applications where moisture, chemical exposure, or atmospheric conditions threaten the integrity of standard steel piping. Whether for structural supports, electrical conduit systems, or water transport, our galvanized bends ensure safety and longevity.

Key Features & Benefits

• Exceptional Corrosion Resistance: The zinc coating acts as a sacrificial anode, protecting the underlying steel from rust and oxidation. This makes them highly suitable for outdoor use, marine environments, and humid conditions.

• Extended Service Life: Galvanizing significantly increases the lifespan of the piping system, reducing maintenance costs and the frequency of replacement.

• Robust Mechanical Strength: Beneath the coating, the carbon steel core provides high tensile strength and impact resistance, capable of withstanding heavy loads and structural stress.

• Versatile Application: Widely used in construction, HVAC, electrical conduit protection, and water distribution systems (non-potable and fire protection).

• Cost-Effective Protection: Offers a high-performance solution at a fraction of the cost of stainless steel, providing excellent value for infrastructure projects.

Technical Specifications

• Base Material: Carbon Steel (ASTM A234 WPB, ASTM A105, API 5L)

• Coating Type:

• Hot Dip Galvanized (HDG): Thick, durable coating (approx. 50-80μm or more) suitable for outdoor and heavy-duty use.

• Pre-Galvanized: Smooth finish, typically used for lighter duty or indoor applications.

• Size Range: 1/2" to 24" (DN15 to DN600)

• Wall Thickness: SCH 40, SCH 80, XS, XXS (Note: Wall thickness increases slightly after galvanizing)

• Bend Radius:

• Long Radius (LR): 1.5D

• Short Radius (SR): 1.0D

• Custom Induction Bends: 3D, 5D, etc.

• Standards:

• Fittings: ASME B16.9, ASME B16.11

• Coating: ASTM A153 / A153M (Zinc Coating on Iron and Steel Hardware)

Manufacturing Process

We utilize precise methods to ensure the integrity of the galvanized layer:

• Hot Dip Galvanizing: The finished carbon steel bend is cleaned, fluxed, and immersed in a bath of molten zinc (approx. 450°C). This creates a metallurgical bond, forming a series of zinc-iron alloy layers topped by a pure zinc layer.

• Cold Bending & Galvanizing: For specific applications, straight galvanized pipes may be cold-bent to the desired angle. We take care to use materials or specific tooling to prevent damage to the zinc coating during the bending process.

• Post-Treatment: Passivation (chromate treatment) may be applied to prevent "white rust" (wet storage stain) during storage and transport.

Applications

• Construction & Infrastructure: Structural steel supports, handrails, scaffolding, and fencing.

• Electrical Conduit: Protecting electrical wiring from physical damage and moisture (EMT/IMC/Rigid conduit).

• Fire Protection Systems: Sprinkler piping where corrosion resistance is mandatory.

• HVAC: Ductwork supports and ventilation systems.

• Water & Wastewater: Non-potable water lines, irrigation, and drainage systems.

• Solar Energy: Mounting structures and grounding connections.

Quality Assurance

Every Galvanized Bend undergoes strict quality control:

• Coating Thickness Measurement: Magnetic gauges are used to verify the zinc layer meets ASTM A153 standards (typically >50μm).

• Adherence Test: Preece test or stripping tests to ensure the coating is firmly bonded and does not flake off.

• Visual Inspection: Checking for bare spots, blisters, or roughness to ensure a smooth, continuous finish.

• Dimensional Check: Verifying angles and radii to ensure fit-up accuracy.

Packaging

To prevent damage to the zinc coating, our galvanized bends are packed with care. They are typically bundled with nylon straps or packed in wooden crates with protective separators (foam or paper) to avoid metal-to-metal contact. This ensures the coating remains intact until installation.