Rayan entered the market in the mid-2010s with a focus on engineered clamps and specialty fasteners. In a short time, it closed the quality gap in local MEP supports. Using heavy-gauge galvanized steel, precise dimensional control, and multilayer anti-corrosion coatings, Rayan supplies clamps that stay reliable from high-vibration oil & gas facilities to low-noise (acoustic) municipal drainage networks. CNC machining, electrolytic coating lines, and periodic tensile/fatigue testing underpin high load capacity and a service life of 10+ years under standard operating conditions.
Rayan’s Full Clamp Range
Rayan offers 50+ SKUs, commonly grouped into three families:
1) Rubber-Lined Hanger Clamp with Captive Nut
- Supplied in 16–200 mm diameters.
- Captive weld nut allows direct threading with M8/M10 rods.
- NBR liner prevents metal-to-metal contact and cuts noise by up to 18 dB.
- 12 μm electro-galvanized coating delivers >120 h salt-spray resistance—ideal for coastal climates or humid plant rooms.
2) Welded-Tail (T-Shape) Clamp
- The T-base welded directly to the beam aligns shear and tensile forces with the structure.
- Continuous peripheral welding (SMAW or CO₂) minimizes bolt-loosening during periodic inspections.
- On sloped horizontal sewer lines, the clamp allows up to 3° angle adjustment during welding to optimize flow.
3) Multi-Purpose Wall Clamps
- For short runs and vertical risers, wall half-clamps with adjustable bases are a cost-effective choice.
- A spring, snap-lock latch enables one-handed installation and fine adjustment—useful in riser shafts and suspended ceilings.
Engineering & Commercial Advantages
- High tensile strength: ST37-2 steel, electro-galvanized after forming; average clamp body tensile strength ~370 MPa.
- Vibration & noise insulation: In lined models, Shore A 65 NBR damps pump pulsations.
- Corrosion protection: ASTM B117 salt-spray tests show Rayan clamps last up to 5× longer than comparable imports.
- Ease of installation: Each clamp ships with 8.8-grade bolt & nut to reduce accessory sourcing and assembly errors.
- Cost efficiency: Local manufacturing lowers total landed cost, making EPC budgeting straightforward.
Technical Comparison of Two Popular Models
| Feature | Hanger Clamp with Captive Nut | Welded-Tail Clamp |
|---|---|---|
| Pipe OD Range (mm) | 16–200 | 20–250 |
| Connection to Structure | M8/M10 threaded rod | Direct welding |
| Max Allowable Load (kgf) | 240 | 310 |
| Inner Lining | NBR 65 A | Optional (NBR) |
| Salt-Spray Resistance (h) | 120 | 140 |
Key Selection & Installation Notes
- Size the clamp to the actual pipe OD including insulation; PE foam jackets can add up to 5 mm over nominal.
- For hot-water lines above 90 °C, use EPDM lining.
- For hanger layouts, center-to-center spacing should not exceed 1.5 m for plastic pipes and 2 m for steel, keeping mid-span deflection under 0.2%.
- To absorb thermal expansion, add one sliding clamp every 10 m.
Standard Installation Steps – Rubber-Lined Hanger Clamp
| Step | Required Tool | Execution Note |
|---|---|---|
| Ceiling drilling | Rotary drill + carbide bit | Min. depth 50 mm |
| Anchor installation | Hammer | Torque to 20 N·m |
| Threaded rod fixing | Adjustable wrench | Grease rod threads with anti-corrosion grease |
| Clamp placement | Flat screwdriver | Maintain 5 mm thermal gap |
| Final adjustment | Laser level | 1% slope for drainage lines |
Sector-Specific Applications
- High-rise buildings: Wall clamps with backing plates cut point load by up to 30% and help prevent cracking in lightweight walls.
- Fire protection: Welded-tail models rated PN16 withstand hydraulic shock.
- Food & pharma: AISI 304 stainless versions with white silicone liners support hygienic design and CIP cleaning.
- HVAC: Rubber-lined hangers limit fan-coil noise transmission to the structure and improve room acoustics.
Tamam Baha is a recognized supplier of Rayan clamps with broad availability and fast delivery; distribution is non-exclusive, and customers may source products from multiple vendors based on project needs.
