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China Suppliers Factory for Galvanized U-Bolts, Double Headed Bolts, and Customized Irregular U-Bolts
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China Suppliers Factory for Galvanized U-Bolts, Double Headed Bolts, and Customized Irregular U-Bolts
China Suppliers Factory for Galvanized U-Bolts, Double Headed Bolts, and Customized Irregular U-Bolts
China Suppliers Factory for Galvanized U-Bolts, Double Headed Bolts, and Customized Irregular U-Bolts
China Suppliers Factory for Galvanized U-Bolts, Double Headed Bolts, and Customized Irregular U-Bolts
China Suppliers Factory for Galvanized U-Bolts, Double Headed Bolts, and Customized Irregular U-Bolts
China Suppliers Factory for Galvanized U-Bolts, Double Headed Bolts, and Customized Irregular U-Bolts
China Suppliers Factory for Galvanized U-Bolts, Double Headed Bolts, and Customized Irregular U-Bolts
China Suppliers Factory for Galvanized U-Bolts, Double Headed Bolts, and Customized Irregular U-Bolts

China Suppliers Factory for Galvanized U-Bolts, Double Headed Bolts, and Customized Irregular U-Bolts

U-shaped bolts are essential components used to effectively connect and secure members with U-shaped grooves. These bolts are designed to provide superior strength and stability for various applications. Primarily utilized in industries such as construction, plumbing, and engineering, U-bolts facilitate the fastening of pipe supports, coordinate measuring instruments, and other specialized equipment. As a leading factory and supplier in China, we offer high-quality U-bolts that meet rigorous standards, ensuring reliable performance in all your projects. Trust our products for secure and efficient connections in your structures and systems
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    Product Detail

    Din 3570 U Bolt U Wire U Clamp
    📐 Dimensional Specifications — Small to Medium Sizes
    Nominal Diameter Range: d 30 – 148 mm
    Nominal diameter
    d    		 30 38 46 52 64 82 94 120 148
    d1 25~26.9 30~33.7 38~42.4 44.5~48.3 57~60.3 76.1 88.9 108~114.3 133~139.7
    d1 Suitable for pipe size Metric system 20 25 32 40 50 65 80 100 125
    d1 English 3/4" 1" 1 1/4" 1 1/2" 2" 2 1/2" 3" 4" -
    b ① 40 40 50 50 50 50 50 60 60
    ds 10 10 10 10 12 12 12 16 16
    d3 M10 M10 M10 M10 M12 M12 M12 M16 M16
    L ① 70 76 86 92 109 125 138 - -
    L1 28 31 37 40 49 57 66 171 191
    n 40 48 56 62 76 94 106 136 164
    100 piece weight (steel) ≈ kg Type A 9.4 10.5 12 12.9 22.2 25.9 28.8 64 72.7
    Type B 6.8 7.7 9 9.7 16.8 19.8 22.4 - -
    📏 Dimensional Specifications — Large Sizes
    Nominal Diameter Range: d 176 – 530 mm
    Nominal diameter
    d    		 176 202 228 282 332 378 428 530
    d1 159~168.3 (191)~193.7 216~219.1 267~273 318~323.9 355.6~368 406.4~419 508~521
    d1 Suitable for pipe size Metric system 150 -175 200 250 300 350 400 500
    d1 English - - - - - - - -
    b ① 60 60 70 70 70 70 70 70
    ds 16 16 20 20 20 24 24 24
    d3 M16 M16 M20 M20 M20 M24 M24 M24
    L ① - - - - - - - -
    L1 217 249 283 334 385 435 487 589
    n 192 218 248 302 352 402 452 554
    100 piece weight (steel) ≈ kg Type A 83.4 95.8 169.8 202.8 235 382 429 522
    Type B - - - - - - - -
    🔩 Purpose, Shape & Application Areas of U-Bolts

    U-bolt Usage: Mainly used for water pipes and other fixed pipe fittings or plates, such as the construction and installation of automotive steel plate springs, mechanical connections, vehicles, ships, bridges, tunnels, railways, etc.

    Main Shapes: Semi-circular, right angled square, triangle, oblique triangle, etc.

    Application Areas: U-bolts are usually used in trucks to stabilize car chassis and frames. For example, leaf springs are connected by U-bolts. U-bolts have a wide range of applications, such as construction and installation, mechanical component connections, vehicles, ships, bridges, tunnels, railways, etc.

    In addition, U-bolts have been widely used in modern industrial fields, easy to install, maintain, and replace, and have seismic performance and anti-loosening function. When selecting and using U-bolts, factors such as material, density, strength, color, and compressive strength need to be considered to ensure that they can adapt to specific usage environments and requirements.

    ✅ Key Features at a Glance
    • Widely used for securing water pipes, plate springs, and structural components
    • Available in multiple shapes: semi-circular, square, triangular, and oblique triangular
    • Suitable for vehicles, ships, bridges, tunnels, and railway applications
    • Easy to install, maintain, and replace in industrial environments
    • Excellent seismic performance and anti-loosening function
    • Selection based on material, density, strength, and compressive strength requirements
    ❓ Frequently Asked Questions
    Q What is a DIN 3570 U-bolt used for?
    DIN 3570 U-bolts are primarily used to secure water pipes, gas pipes, and other pipe fittings to structural supports. They are also widely used in automotive leaf spring assemblies, bridges, tunnels, ships, and railway installations.
    Q What shapes are U-bolts available in?
    U-bolts are manufactured in several shapes to suit different applications, including semi-circular (round bend), right-angled square, triangular, and oblique triangular forms. The semi-circular shape is the most commonly used for pipe clamping.
    Q What is the difference between Type A and Type B U-bolts?
    Type A U-bolts are generally heavier and designed for higher load-bearing applications, while Type B U-bolts are lighter and suited for standard-duty use. As shown in the specification tables, Type A consistently has a higher per-100-piece weight compared to Type B across all nominal diameters.
    Q What materials are U-bolts typically made from?
    U-bolts are commonly made from carbon steel, stainless steel, or galvanized steel. The choice of material depends on the application environment — stainless steel is preferred for corrosive or outdoor environments, while carbon steel is suitable for general industrial use.
    Q How do I select the correct U-bolt size for my pipe?
    To select the correct U-bolt, match the nominal diameter (d) and the d₁ range in the specification table to your pipe's outer diameter. Both metric (DN) and imperial (inch) pipe sizes are listed in the tables to help you find the appropriate fit for your application.
    Q Do U-bolts have anti-loosening properties?
    Yes. U-bolts are designed with anti-loosening and seismic resistance features, making them reliable for use in dynamic environments such as moving vehicles, vibrating machinery, and structures exposed to seismic activity. Proper torque application further enhances their locking performance.