Beam Clamps
Malleable Cast Iron Beam Clamp 5/16" WLL 350 lbs
5/16 malleable cast iron beam clamp rated WLL 350 lbs for steel suspension and support systems. Electro-galvanized finish, mechanical clamping without welding or drilling—ideal for MEP piping, HVAC duct, cable tray, conduit and light equipment mounting on I-beam, H-beam and channel flanges.
Request a Quote1. Product Overview
The 5/16 malleable cast iron beam clamp is a mechanical clamping connector designed for steel structure suspension systems, with a rated working load limit of 350 lbs. It is precision cast from quality malleable iron, combining good toughness, high strength and excellent impact resistance for long-term use in construction and industrial installation.
A high-strength top set screw and lock nut create stable mechanical grip on the flange. No welding or drilling is required—the clamp installs quickly on I-beams, H-section steel and channel flanges, providing a reliable fixed point for threaded rod, pipe supports, cable tray, ductwork and other suspension assemblies.
Electro-galvanized surface treatment improves rust and corrosion resistance for commercial buildings, industrial plants, warehousing, logistics centers and general steel structure projects.
2. Product Features
- Quality malleable iron material: Cast from premium malleable iron with high mechanical strength and toughness—resists cracking and deformation over extended service.
- 350 lbs rated working load: This 5/16 size is rated WLL 350 lbs, suited to light and medium-duty suspension and support systems in typical building MEP work.
- Non-destructive steel installation: Mechanical clamping only—no welding, drilling or cutting of the beam, preserving flange surfaces and structural integrity.
- Anti-loosening lock nut: Top set screw with lock nut helps reduce loosening risk in vibration environments for stable long-term connection.
- Electro-galvanized corrosion protection: Full zinc plating for rust resistance in indoor and general industrial conditions.
- Fast installation and reuse: No special tools required; can be removed, adjusted and reinstalled to improve efficiency and lower maintenance cost.
3. Product Advantages
- Quality malleable iron construction—durable and dependable
- WLL 350 lbs rated capacity for stable load support
- Electro-galvanized finish with strong corrosion resistance
- No welding or drilling—quick, convenient installation
- High-strength clamping structure for firm connection
- Lock nut design helps prevent bolt loosening
- Reusable and repositionable
- Suitable for diverse structural steel installation environments
4. Application Scenarios
The 5/16 malleable cast iron beam clamp serves steel-framed buildings and industrial projects as a fixed connection point for suspension and support systems.
- Building MEP systems: Fire sprinkler pipe support, HVAC duct mounting, plumbing hangers, threaded-rod pipe suspension.
- Electrical installation: Cable tray and ladder mounting, cable channel support, conduit fixing, industrial lighting.
- Steel-framed buildings: Industrial plants, warehousing and logistics centers, commercial complexes, steel platforms.
- Auxiliary facility mounting: Signage suspension, maintenance platform accessories, ventilation support, light equipment fixing.
5. Technical Specifications
| Product Name | Malleable Cast Iron Beam Clamp |
|---|---|
| Size | 5/16" |
| Working Load Limit (WLL) | 350 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. Installation Method
Step-by-Step Installation
- Place the beam clamp on the designated position along the steel flange.
- Adjust the clamp to the correct installation location.
- Tighten the top set screw clockwise until the clamp grips the flange securely.
- Tighten the lock nut to prevent the set screw from loosening.
- Attach threaded rod, pipe clamps or other suspension components—the connection point is ready for use.
Important — load and maintenance:
- Do not exceed the rated working load limit (WLL 350 lbs) for this 5/16" size.
- Re-check set screw and lock nut tightness after initial loading and during routine maintenance, especially where vibration is present.
7. Why Choose Y.F METAL
- Workshop production in Handan with hands-on quality checks
- Strict inspection before shipment
- OEM / ODM customization available
- Multiple size options in the product range
- Export-focused since 2023, building on decades of domestic manufacturing
- Project-based certification and test reports available upon request
- Custom packaging and branding support
- Professional pre-sales and after-sales technical support
8. Frequently Asked Questions
- Q1: Does this beam clamp require welding or drilling?
A: No. Simply place the clamp on the steel flange and tighten the set screw—no welding or drilling is needed. - Q2: Which steel sections is it compatible with?
A: I-beam, H-section steel, channel steel and similar structural flanges. - Q3: Can the clamp be reused?
A: Yes. It can be removed and reinstalled without affecting performance when used within rated capacity. - Q4: What are the benefits of electro-galvanizing?
A: Improved rust and corrosion resistance for longer service life in indoor and general industrial environments. - Q5: What is the 5/16 size suited for?
A: Suspension and support systems within the 350 lbs WLL rating—piping, cable tray, ductwork, electrical installation and light equipment mounting.
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