Name: Malleable Cast Iron Beam Clamp 3/8" WLL 400 lbs
Brand: Y.F METAL
SKU: malleable-iron-beam-clamp-38-400lbs

Malleable cast iron beam clamp 3/8 inch WLL 400 lbs electro-galvanized with set screw and lock nut

Beam Clamps

Malleable Cast Iron Beam Clamp 3/8" WLL 400 lbs

3/8" WLL 400 lbs

3/8 malleable cast iron beam clamp rated WLL 400 lbs for medium-duty steel suspension and support. Electro-galvanized mechanical clamping without welding or drilling—suited to MEP piping, cable tray, HVAC duct, process lines and equipment supports on I-beam, H-beam and channel flanges.

Request a Quote

1. Product Overview

The 3/8 malleable cast iron beam clamp is a mechanical clamping connector for steel structure installation, with a rated working load limit of 400 lbs for medium-duty suspension and support applications. It is precision cast from quality malleable iron with electro-galvanized finish, offering high mechanical strength, impact resistance and corrosion protection.

A high-strength top set screw and lock nut form a stable clamping structure on I-beam, H-section and channel flanges—no welding, drilling or cutting required. The clamp provides a reliable mounting base for piping, cable tray, ductwork, equipment brackets and auxiliary facilities.

Compared with smaller sizes, the 3/8 specification delivers higher load capacity for industrial plants, commercial buildings, warehousing, logistics and steel structure projects where connection stability is critical.

2. Product Features

Higher load capacity: The 3/8 size is rated WLL 400 lbs for medium-duty suspension and support in a broader range of industrial installation scenarios.
Quality malleable iron casting: Dense, premium malleable iron with high compressive strength, toughness and impact resistance for long-term stable service.
Efficient mechanical clamping: High-strength set screw grips the flange without damaging the steel structure—fast field installation.
Anti-loosening lock nut: Lock nut helps reduce bolt loosening from equipment operation or environmental vibration for reliable connection.
Electro-galvanized protection: Full zinc plating resists rust and oxidation to extend service life in diverse industrial environments.
Flexible installation: Can be adjusted, removed and reinstalled after initial mounting to suit changing site requirements.

3. Product Advantages

WLL 400 lbs rated capacity—stronger load support than smaller sizes
Malleable iron material with high strength and toughness
Electro-galvanized finish with excellent corrosion resistance
No welding or drilling—efficient installation
High-strength clamping structure for secure fixing
Lock nut design reduces loosening risk
Reusable to lower total cost of ownership
Suitable for diverse structural steel projects

4. Application Scenarios

The 3/8 malleable cast iron beam clamp serves medium-load steel installation work, providing fixed connection points for suspension and support systems.

Building MEP systems: Fire sprinkler support, HVAC duct hangers, plumbing and process pipe fixing.
Electrical installation: Cable tray systems, cable channel mounting, conduit support, industrial lighting.
Steel-framed buildings: Industrial plants, warehousing and logistics centers, commercial complexes, steel platforms and maintenance access routes.
Industrial equipment mounting: Threaded-rod suspension, pipe support frames, ventilation equipment, signage systems and auxiliary fixtures.

5. Technical Specifications

Product Name	Malleable Cast Iron Beam Clamp
Size	3/8"
Working Load Limit (WLL)	400 lbs
Body Material	Malleable cast iron
Surface Finish	Electro-galvanized
Fasteners	High-strength hex set screw + lock nut
Installation	Mechanical clamping
Compatible Steel	I-beam, H-beam, channel and similar structural flanges
Reusable	Yes

6. Usage Recommendations

Installation & Maintenance

Before installation, confirm the beam flange dimensions match the 3/8 clamp size and application requirement.
Tighten the set screw and lock nut to the recommended torque for your project specification.
Do not exceed the rated working load limit (WLL 400 lbs).
Inspect connections periodically. If fasteners loosen or the clamp shows abnormal wear, maintain or replace promptly to ensure long-term stable operation.

7. Why Choose Y.F METAL

Workshop production in Handan with hands-on quality checks
Quality malleable iron raw material with strict QC
OEM / ODM customization available
Multiple sizes and specifications in range
Export-focused since 2023, building on decades of domestic manufacturing
Project-based certification and test reports available upon request
Professional technical and after-sales support

8. Frequently Asked Questions

Q1: What projects is the 3/8 size suited for?
A: Fire protection, HVAC, electrical cable tray, industrial piping, steel-framed plants and other medium-load suspension and support systems.
Q2: Does 400 lbs mean maximum capacity?
A: 400 lbs is the rated working load limit (WLL). Select based on installation conditions and project standards—do not overload.
Q3: Which steel sections are compatible?
A: I-beam, H-section steel and channel flanges; confirm fit for your specific flange size.
Q4: Can the clamp be reused?
A: Yes. The mechanical clamping design allows removal and reinstallation when used within rated capacity.
Q5: What are the benefits of electro-galvanizing?
A: Improved rust and corrosion resistance for indoor and general industrial use, extending product service life.