| Standard | DIN 3570, ASME B18.2.1 |
| Grade | 4.8, 8.8 |
| Surface Treatment | ZP |
Product Introduction
Standard Name: U-Bolt (U-shaped bolt).
Common Names: U-shaped clamp, saddle bolt.
Product Definition: A bolt shaped like the letter “U” with threads at both ends, used to secure round tubes, rods, or components (such as automotive exhaust pipes, water pipes, or cable bundles) to brackets or flat surfaces. ZP indicates the surface has undergone electrogalvanized treatment.
U Bolt ZP Key Features
Zinc Plated (ZP) Coating: Provides basic rust protection and a bright silver finish, enhancing corrosion
resistance, suitable for indoor or mildly damp environments.
U-shaped Design: Round or square bend, threaded ends, supplied with nuts and washers, providing
circumferential fastening and even pressure distribution.
Material and Strength: Commonly made of carbon steel, medium strength; suitable for securing pipes,
beams, or round objects.
Diverse Specifications: Diameters M6-M24, various inner widths/heights, often with cross holes or saddles.
Advantages: Simple installation, strong gripping force, economical and practical, commonly used for
pipe support.

Working Principle
Circumferential Installation: The U-shaped part surrounds the pipe or beam, with the ends passing
through the mounting plate.
Preload Generation: Tightening the nuts generates axial clamping force, evenly pressing the object.
Load Distribution: The curved part distributes pressure, preventing local deformation; the zinc plating
reduces friction and provides corrosion protection.
Fixing and Adjustment: Washers enhance stability, and the nut position is adjustable; the principle
involves frictional gripping and mechanical encirclement.

Product Applications
Pipe Support: Securing water pipes, gas pipes, or cables to walls/beams, providing stable support.
Construction Engineering: Installing railings, brackets, or steel beams, economical and practical.
Automotive and Machinery: Securing exhaust pipes, suspension, or equipment components.
Home and Industrial: Securing shelves, fences, or piping systems; zinc plating is suitable for indoor
environments.
General Clamping: Any round object requiring circumferential fastening.