Factory-Direct U Bolt Supplier Hot-Dip Galvanized U Bolts For Construction & Pipeline
Factory-Direct U Bolt Supplier Hot-Dip Galvanized U Bolts For Construction & Pipeline
A U-Bolt is a U shaped bolt with two threaded arms protruding from a curved base. There are many uses for a U-bolt such as attaching pipes to machines. Whereas a square shaped U-Bolt is mainly used for lumber applications. Zinc plating, retards the corrosion rate in a normal atmosphere.
u bolt hdg specifications and dimensions table
| Pipe outer diameter Da (mm) | Bending radius R (mm) | Thread specification d | Total length (mm) | U-shaped opening width a (mm) | Leg spacing b (mm) | Threaded section length m (mm) |
|---|---|---|---|---|---|---|
| 14 | 8 | M6 | 98 | 33 | 22 | 22 |
| 18 | 10 | M10 | 108 | 35 | 26 | - |
| 22 | 12 | M10 | 135 | 42 | 28 | 34 |
| 25 | 14 | M10 | 143 | 44 | 38 | - |
| 33 | 18 | M10 | 160 | 48 | 46 | - |
| 38 | 20 | M12 | 192 | 55 | 32 | 52 |
| 42 | 22 | M12 | 202 | 57 | 56 | - |
| 45 | 24 | M12 | 210 | 59 | 60 | - |
| 48 | 25 | M12 | 220 | 60 | 62 | - |
| 51 | 27 | M12 | 225 | 62 | 66 | - |
| 57 | 31 | M12 | 240 | 66 | 74 | - |
| 60 | 32 | M12 | 250 | 67 | 76 | - |
| 76 | 40 | M12 | 289 | 75 | 92 | - |
| 83 | 43 | M12 | 310 | 78 | 98 | - |
| 89 | 46 | M12 | 325 | 81 | 104 | - |
| 102 | 53 | M16 | 365 | 93 | 38 | 122 |
| 108 | 56 | M16 | 390 | 96 | - | - |
| 114 | 59 | M16 | 405 | 99 | - | - |
| 133 | 69 | M16 | 450 | 108 | - | - |
| 140 | 72 | M16 | 470 | 112 | - | - |
| 159 | 82 | M16 | 520 | 122 | - | - |
| 165 | 85 | M16 | 538 | 125 | - | - |
| 219 | 112 | M16 | 680 | 152 | - |
| Application Categories | Specific Application Scenarios | Main Functions and Advantages |
|---|---|---|
| Infrastructure and Construction | Building pipe installation, ventilation and fire protection piping, steel structure connections, cantilevered scaffolding embedded parts | For fixing water pipes, cable conduits, air ducts, etc.; provides stable connections, and the hot-dip galvanized layer resists moisture corrosion in the building environment. |
| Transportation and Industry | Automotive chassis (fixed leaf springs), marine equipment, rail vehicle components | Withstands vibration and impact; hot-dip galvanizing treatment provides resistance to harsh environments such as road salt spray and high humidity at sea. |
| Power and Municipal Engineering | Power poles and towers, power line pole clamps, bridge and tunnel facilities, municipal sewage pipelines | These components are permanently exposed to the elements, requiring extremely high weather resistance. The thick hot-dip galvanized coating provides long-lasting corrosion protection for 10-15 years or more. |
| Other Mechanical Fastening | Securing tubular and sheet metal components of large equipment, and mechanical hydraulic system pipelines. | Utilizes a U-shaped structure for clamping and securing, offering easy installation and removal, and is suitable for various non-standard applications. |
Why is Hot Dip Galvanizing U bolts Crucial ?
hdg u bolt is the core reason for its widespread application in the scenarios mentioned above. The main differences between it and ordinary electro-galvanizing are:
Process and Coating: The bolts are immersed in molten zinc, forming a firmly adhering, relatively thick (usually tens of micrometers or more) zinc-iron alloy layer, providing a dual anti-corrosion mechanism of both physical barrier and cathodic protection.
Performance Comparison: Its corrosion resistance is far superior to ordinary electro-galvanizing or black oxide treatment, making it particularly suitable for outdoor, humid, coastal, or industrial environments. Under standard conditions, its service life can reach 10-15 years or even longer.
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