U Bolts Manufacturer in India
Jade Alloys is a leading U bolts manufacturer, supplier and exporter in India, offering a complete range of high-quality U bolts engineered for pipe, tube and structural support. A U bolt is a headless, U- or C-shaped bent fastener with two threaded legs that wrap around a pipe or section and fix into a bracket with nuts and washers. Compared with a J bolt, the twin-leg design of a U bolt delivers far greater clamping and holding strength, making it the first choice for pipe supports, docks, bridges and infrastructure.
We manufacture and stock U bolts in carbon steel, alloy steel and stainless steel as well as high-performance alloys including Inconel, Hastelloy, Monel and Duplex / Super Duplex. Also known as bent U bolts, U-shaped bolts or U hook bolts, our range is produced in metric and imperial sizes to ASTM, ASME, DIN, ISO, BS and IS standards with EN 10204 3.1 certification on every shipment and export to 40+ countries across the Gulf, Southeast Asia and Europe.
Types of U Bolts We Manufacture
Our U bolt range covers every common bend profile and related bent-bolt configuration for industrial, automotive, construction and marine use:
Standard & Semi-Circular U Bolts
Round-bend U bolts matched to the pipe outside diameter.
Square U Bolts
Square-bend profile for square and rectangular sections.
Extended U Bolts
Longer legs for deep bracket or stand-off mounting.
Grip & Non-Grip U Bolts
To clamp firmly or allow controlled movement.
Pipe U Bolts / U Clamp Bolts
For pipeline and conduit support.
Fully & Partially Threaded U Bolts
To suit the required nut engagement.
Related bent and anchor bolts we also manufacture include J bolts, eye bolts, anchor bolts, hook / hanger bolts and carriage bolts.
U Bolt Sizes, Dimensions & Properties
U bolt selection depends on the pipe or component outside diameter, the inside height needed within the bend, and the mounting arrangement. Key dimensions are thread size (leg diameter), inside diameter (distance between the legs), inside height, material and finish.
| Property | Details |
|---|---|
| Product Type | U Bolt (bent U / C-shaped, headless, twin-leg) |
| Manufacturing | Hot Forged / Cold Forged |
| Metric Size | M3 to M160 |
| Imperial Size | 1/4″ to 3″; leg lengths 3/8″ to 8″ |
| Threads | Metric (coarse/fine), UNC, UNF, UN, BSW, ISO |
| Form / Sub-Type | Fully / Partially Threaded; round, semi-circular & square bend |
| High-Tensile Grades | Class 8.8, 10.9, 12.9, 14.9 |
| Standards | ASTM, ASME, DIN, ISO, BS, IS, SAE, UNI, PN, EU |
U Bolt Technical Specifications
| Parameter | Specification |
|---|---|
| Tensile Strength | Up to 1,000 MPa depending on grade and material |
| Load Capacity | Light clamping loads to heavy-duty structural pipe support |
| Operating Temperature | ‒40°C to +400°C depending on material and finish |
| Corrosion Resistance | High in stainless, Duplex and galvanized variants – outdoor/marine |
| Bend Radius | Standard and custom radii to fit different pipe diameters |
| Compliance | DIN, ISO, ASTM, ASME, BS; RoHS / REACH available on request |
U Bolt Standards & Size Range
Every U bolt is manufactured to a published specification. See our full Fastener Standards library, including ASTM, ASME, DIN, ISO and BS.
| Standard | Size Range |
|---|---|
| ASME B18.2.1 | 3/8″ to 3″ |
| ASME B18.2.3.6M / 3.7M | M12 to M36 |
| ASTM A193 / A194 | M6 to M72 |
| DIN 934 / DIN 6914 | M6 to M72 |
| ISO 4032 / ISO 7412 | M6 to M72 |
| BS 1769 | 1/2″ to 2″ |
| UNI 5712 / DIN-EN 14399-4 | M12 to M36 |
| IS 1363 | M6 to M72 |
Stainless Steel, Alloy & Exotic U Bolt Materials & Grades
We produce U bolts across the full material range. For high-temperature bolting we recommend ASTM A193 B7 and B16 grades; for structural use ASTM A325 and A307; and for cryogenic service ASTM A320 L7.
| Material | Grades |
|---|---|
| Stainless Steel | SA 193 / 194 / 320 – 304, 304L, 316, 316L, 316Ti, 317L, 321, 347, 904L |
| Carbon Steel | ASTM A307, A325, A563; IS 1363; Grade 4.6 / 8.8 |
| Alloy Steel | A/SA 193 & 194 – B6, B7, B7M, B16, 2, 2H, Gr 7, Gr 8 |
| Duplex & Super Duplex | UNS S31803, S32205, S32550, S32750, S32760 |
| Inconel / Incoloy | 600, 601, 625, 718, 800, 800H/HT, 825, X-750 |
| Hastelloy / Monel | C-22, C-276, C-2000, B2, X / Monel 400, K500 |
| Others | Nickel 200/201, Titanium, Brass, Copper-Nickel, Nitronic, Nimonic, Bronze |
U Bolts Specifications
U Bolt Coatings & Surface Finishes
To match the operating environment and extend service life, U bolts are supplied with the following finishes:
- Hot-Dip Galvanized (HDG)
- Zinc Plated (clear / blue / yellow / black)
- Zinc Cobalt & Aluminium-Zinc Flake
- PTFE / Xylan Coated
- Black Phosphate & Black Oxide
- Nickel Plated
- Polished / Passivated Stainless
- Plain / Self-colour
U Bolt Applications
- Oil, Gas & Power Plants: pipe support and stability in high-pressure, high-temperature service.
- Construction & Civil Engineering: scaffolding, pipeline supports, bridges, docks and structural frameworks.
- Automotive: securing leaf springs, exhaust systems and chassis components.
- Marine & Offshore: rope, rigging and pipeline supports in corrosive salt-water environments.
- Electrical & Instrumentation: fastening conduit, cable trays and cables in panels.
Why Choose Jade Alloys as Your U Bolt Supplier
Established in 1985, Jade Alloys is an ISO 9001:2015 certified fastener manufacturer with full in-house control from raw material to finished U bolt. Every order ships with Mill Test Certificates to EN 10204 3.1 and optional SGS / TUV / BV inspection. Check our Bolts Weight Chart, Nuts Weight Chart and Metal Weights Calculator to estimate quantities, or download our catalogue and quality certificates.
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- Anchor Bolts | Countersunk Bolts | Stud Bolts | Square Head Bolts | Hex Flange Bolts
U Bolt FAQs
What is a U bolt used for?
What is the difference between a U bolt and a J bolt?
What sizes do U bolts come in?
Which U bolt material is best for marine use?
Request a U Bolt Quote
Send your drawing, size and material requirement for a same-day U bolt quotation. Request a Quote → or email sales@jadealloys.com.
