U Bolts
What are U Bolts
U bolts are U-shaped fasteners with threaded ends, designed to secure round objects such as pipes, tubes, or conduit to a surface. Their shape allows them to wrap around cylindrical objects and provide a firm grip when fastened with nuts. U bolts are widely used in piping systems, automotive suspensions, marine applications, and structural supports.
Whether you’re fixing pipes to walls or attaching components to beams, U bolts offer a reliable clamping solution that ensures stability and vibration resistance.
Key Features
- U-Shaped Design – Ideal for clamping round objects like pipes and tubes
- Threaded Legs – Secure fastening with nuts on both ends
- Multiple Material Options – Available in stainless steel, carbon steel, and alloy steel
- Corrosion-Resistant Finishes – Suitable for outdoor and marine use
- Custom Sizes – Available in various bend radii, thread lengths, and diameters
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Specification |
|---|---|
| Size Range | M6 to M36 |
| Thread Types | Metric, UNC, UNF |
| Manufacturing Methods | Cold Bent, Hot Bent, CNC Machined |
| Material Options | Stainless Steel (304/316), Carbon Steel, Alloy Steel |
| Standards | DIN 3570, ASTM A193, BS 3974 |
| Finishes Available | Zinc Plated, Hot-Dip Galvanized, Electro-Polished |
| Property | Value |
|---|---|
| Tensile Strength | 400 – 1100 MPa (material-specific) |
| Proof Load | 300 – 950 MPa |
| Hardness | 100 – 310 HB |
| Elongation | 12% – 30% |
| Temp. Range | -40°C to 300°C |
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.05 – 0.50 |
| Manganese (Mn) | 0.60 – 1.00 |
| Silicon (Si) | 0.10 – 0.40 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Iron (Fe) | Balance |
| Standard | Equivalent Grade |
|---|---|
| ASTM | A193 B8, B8M, A307 |
| DIN | 3570 |
| ISO | 898-1, 3506-1 |
| JIS | B1160 |
| BS | 3974 |
| Bolt Size (mm) | Pipe Size (mm) | Length (mm) | Approx. Weight (kg/100 pcs) |
|---|---|---|---|
| M8 | 15 – 20 | 50 | 2.00 |
| M10 | 25 – 32 | 70 | 3.80 |
| M12 | 40 – 50 | 90 | 6.50 |
| M16 | 65 – 80 | 110 | 12.20 |
| M20 | 90 – 100 | 130 | 21.50 |
Applications of U Bolts
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is a U bolt used for?
U bolts are used to fasten round objects like pipes or tubing to structures or surfaces, offering stable and vibration-resistant support.
Do you offer stainless steel U bolts?
Yes, we manufacture U bolts in both SS 304 and SS 316 grades, ideal for corrosive and marine environments.
Are U bolts suitable for heavy-duty applications?
Absolutely. We offer U bolts in high-tensile materials like alloy steel and hardened carbon steel for industrial-grade strength.
Can I get custom U bolt sizes?
Yes. Just share your dimensions—our engineering team will produce U bolts tailored to your specifications.
