U bolt
Size Range
Metric (ISO/DIN):
Common diameters: M6, M8, M10, M12, M16, M20, M24, M30, M36.
Smaller sizes (M6–M12) suit light-duty applications (e.g., plumbing, electrical conduits).
Larger diameters (M16–M36) handle heavy loads (e.g., pipelines, structural supports).
Imperial (ANSI/ASME):
Common diameters: 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 1", 1.25", 1.5".
Surface Treatments for U-Bolts
1. Hot-Dip Galvanizing
Standards: ASTM A153, ISO 1461.
Use: Guardrails, pipelines, marine hardware.
2. Electro-Zinc Plating
Standards: ASTM B633, ISO 4042.
Use: Automotive parts, electrical fixtures.
3. Dacromet (Zinc Flake Coating)
Standards: ISO 10683.
Use: Automotive suspensions, high-temperature machinery.
4. Black Oxide
Standards: ASTM D769.
Use: Decorative fixtures, indoor machinery.
5. Powder Coating
Standards: AAMA 2604.
Use: Architectural structures, outdoor furniture.
6. Stainless Steel Passivation
Standards: ASTM A967.
Use: Food processing, chemical plants.
7. Nickel Plating
Standards: ASTM B689.
Use: Architectural accents, hydraulic systems.
8. Phosphate Coating
Standards: MIL-DTL-16232.
Use: Automotive fasteners, military equipment.
9. Anodizing (For Aluminum U-Bolts)
Standards: MIL-A-8625.
Use: Aerospace, marine aluminum fittings.
Primary Applications
Automotive:
CSecuring exhaust systems, leaf springs, or axles.
Resists vibration and road shocks.
Construction & Infrastructure:
Anchoring pipelines, HVAC ducts, or electrical conduits.
Mounting signage, streetlights, or guardrails.
Marine & Offshore:
Fastening mooring lines, deck equipment, or buoyancy aids.
Agriculture:
Attaching hydraulic hoses, tractor components, or irrigation systems.
Renewable Energy:
Fixing solar panel frames or wind turbine cables.
Materials
Carbon Steel:
Grades: Grade 4.8, 8.8, 10.9 (general-purpose, high-strength).
Affordable and heat-treatable.
Stainless Steel:
Grades: A2 (304), A4 (316) for corrosion resistance.
Ideal for marine, chemical, or food-grade environments.
Alloy Steel:
ASTM A325 for heavy-load applications (e.g., structural rigging).
Key Description
Design: U-shaped bend with two parallel threaded legs.
Function: Clamps cylindrical objects (e.g., pipes, poles) to flat surfaces or beams.
Variants:
Round Bend: Smooth curve for uniform pressure on rounded surfaces.
Square Bend: Angled corners for compatibility with square or rectangular profiles.
Advantages
Vibration Damping: Curved design absorbs shocks and prevents loosening.
Versatility: Adjustable nuts accommodate varying material thicknesses.
Durability: Material and coating options extend service life in harsh conditions.
U-bolts are indispensable in scenarios demanding secure, adaptable, and corrosion-resistant fastening solutions. Their design simplicity and compliance with international standards ensure reliability across automotive, industrial, and marine sectors.
Product Information
|
Product Name |
U bolt |
|
Material |
carbon steel,alloy steel,stainless steel,Galvanized Steel,Brass,Titanium |
|
Strength |
ISO 898-1, ASTM A307, SAE J429( Grade 4.8 (ISO 898-1 / ASTM A307),Grade 8.8,Grade 10.9.). ASTM A325,ASTM A449. Hot-Dip Galvanized (ASTM A153):Base material: Typically Grade 4.8 or 8.8 carbon steel. ISO 3506, ASTM F593.A2 (304),A4 (316). |
|
Size |
Metric: M6 to M36 (common range). Imperial: 1/4" to 1.5" (UNC/UNF threads). Leg Length: 50 mm to 500 mm (2" to 20"). Inside Width (Bend): 20 mm to 300 mm (0.8" to 12"). |
|
Surface |
Plain, Black Oxide,zinc plated,zinc yellow plated,Hot Dip Galvanized,passivated,Mechanical Galvanzied,Dacromet,Powder Coating, Anodizing (For Aluminum U-Bolts) |
|
Production Process |
Threading, bending, coating |
|
Threads |
Metric Coarse/Fine & Imperial UNC, UNF, SAE, BSW |
|
MOQ |
800KG |
|
Package |
Carton & Pallet |
Product Services
1.After-sales quality control: After finished product inspection, ensure that it meets customer requirements.
2.Cooperation services: We can provide customers with OEM and ODM services to customize products to ensure that customer requirements are met.
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