Stainless U Bolts Marine
Product Overview
Marine-grade stainless U-bolts are cold-formed from 316 and 304 stainless steels, designed for pipe clamping, tube mounting, and rigging applications in marine and offshore environments. The U-shape configuration provides secure clamping around pipes, tubes, and cables. Manufactured per DIN 3570 and ISO 1719 standards, these U-bolts feature rolled threads for consistent engagement. Passivation per ASTM A967 removes free iron and restores the passive layer. Full material traceability and dimensional inspection reports are available.
Key Features
- Corrosion resistance in saltwater and marine environments.
- Cold-formed construction for consistent thread quality.
- U-shape design for secure clamping and mounting.
- Available with metric and inch threads.
- Supplied with matching nuts and washers.
| Attribute | Specification |
| Material grades | 316 (A4), 304 (A2), duplex 2205 (optional) |
| Diameter range (metric) | M6 – M30 (coarse pitch) |
| Diameter range (inch) | 1/4 – 1 inch (UNC) |
| Pipe/OD clamping range | 10 mm – 200 mm (custom sizes available) |
| Standards | DIN 3570, ISO 1719, custom specifications |
| Surface treatments | Passivation, electro-polishing, zinc plating |
| Thread configuration | Full thread or partial thread options |
| Certification | EN 10204 3.1, dimensional inspection reports |
Marine & Offshore
- Pipe and tube clamping
- Deck hardware mounting
- Exhaust system supports
Industrial
- Piping and conduit supports
- Hydraulic line mounting
- Equipment and machine bases
Infrastructure
- Bridge and structural supports
- Solar panel mounting
- Antenna and pole installations
For marine applications, 316 stainless steel is recommended for maximum corrosion resistance in saltwater environments. 304 is suitable for freshwater and mild atmospheric conditions. When installing, ensure the U-bolt is properly sized for the pipe or tube diameter. Apply anti-seize compound to threads to prevent galling. Tighten nuts evenly to the recommended torque values. For high-vibration applications, use lock nuts or thread-locking compound.
Frequently Asked Questions
Production & Customization
Chance & Union utilizes cold forming and CNC machining processes to produce stainless steel U-bolts in both standard and custom dimensions. We offer material selection support, prototype development, and high-volume production with full quality control per ISO 9001. Dimensional verification, thread inspection, and surface finish testing are available. Our engineering team can assist with design modifications for specific clamping and mounting requirements.
Storage & Handling
- Store in a clean, dry area with relative humidity below 55% to maintain passivation.
- Avoid contact with carbon steel to prevent galvanic corrosion.
- Use plastic or coated containers; separate by size, grade, and finish.
- Implement FIFO rotation; recommended shelf life up to 36 months in original packaging.
- Inspect for rust, pitting, or mechanical damage before installation.
Leveraging the factory's robust R&D and production capabilities, we specialize in high-strength rivets bolts, nuts, washers, pins, screws, and various non-standard custom parts. As experienced Custom stainless u bolts marine Suppliers, we provide flexible manufacturing solutions for different customer requirements. Our product range covers materials including stainless steel, alloy steel, aluminum alloy, copper, and special alloys, utilizing processes such as cold heading, hot forging, and CNC machining. Our products are exported to over 25 countries, serving more than 200 clients.
Chance & Union is committed to seamlessly connecting "Manufactured in China" with the international market, providing global customers with one-stop fastening solutions from R&D to mass production through professional technology and exceptional quality.
