Corrosion-free pipe support solution – U-bolt with I-Rod equivalent half round rod
Younglee’s Standard U-Bolt with Half Round Rod is the ultimate solution for preventing Corrosion Under Insulation (CUI) and metal-to-metal contact in piping systems. By utilizing a high-strength Acetal (POM) half-round rod, this assembly creates a point contact that eliminates water traps and crevice corrosion at support points.
What Is a U Bolt with Half Round Rod?
A U-bolt with a half-round rod (equivalent to I-Rod) is a specialized pipe support assembly. The half-round rod is placed between the pipe and the support beam, while the U-bolt secures the pipe. This design is widely used in pipe racks, offshore platforms, chemical plants, and power plants to provide a durable, non-corrosive interface.
Why Use I-Rod Equivalent Instead of Rubber or PTFE Pads?
- Anti-Corrosion: Eliminates the water-trapping “crevice” found with flat pads.
- High Strength: Unlike rubber, Acetal does not compress or degrade under heavy loads.
- Low Friction: Allows for thermal expansion movement without damaging the pipe.
- CUI Prevention: Specifically designed for Corrosion Under Insulation environments.
Technical Specifications
| Component | Material / Standard |
|---|---|
| Half Round Rod | Acetal (POM) – White/Black |
| U-Bolt Material | Carbon Steel (HDG) including ASTM A36, A516, A193 B7/L7 etc, or Stainless Steel (304/316) including A320 B8, B8M, etc. |
| U-Bolt Standard | DIN 3570 / ASME B18.31.5/ ASTM A36 / A193 / A320, etc; we also make customized standard U bolts. Such as Modec standard, Petrobras standard, and so on. |
| Compressive Strength | 15,000 psi (103 MPa) |
| Max Service Temp | 181°F (83°C) |
| Friction Coefficient | 0.25 (Dry vs Steel) |
Customization Capability
We offer full customization for sizes, lengths, and materials.
U-bolts can be supplied in various standards (ASTM / DIN / ISO) and surface treatments including HDG coating, Xylan coating, Zn-Nickel coating and so on.
The U bolts can be without or with PTFE, Rubber and Polyolefin Polyshrink insulation, please refer to our U bolt with Rubber sleeve.
Contact us today for a quote or send your drawing/specification!
