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📐 DIN 3570 U-Bolt Dimensions — Small to Medium Sizes (Unit: 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 | - | - | ||
📐 DIN 3570 U-Bolt Dimensions — Large Sizes (Unit: 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.
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 & Benefits
🏗️
Wide Application
Suitable for construction, vehicles, ships, bridges, tunnels, and railways.
🔧
Easy Installation
Simple to install, maintain, and replace in various industrial settings.
🛡️
Seismic & Anti-Loosening
Designed with seismic performance and reliable anti-loosening function.
⚙️
Multiple Shapes
Available in semi-circular, right-angled, triangular, and oblique triangle forms.
❓ Frequently Asked Questions
Q What is a DIN 3570 U-bolt used for?
DIN 3570 U-bolts are primarily used to fix water pipes and other pipe fittings or plates. They are widely applied in automotive steel plate spring installations, mechanical connections, vehicles, ships, bridges, tunnels, and railway construction projects.
Q What shapes are available for DIN 3570 U-bolts?
DIN 3570 U-bolts are available in several main shapes, including semi-circular, right-angled square, triangle, and oblique triangle, allowing them to suit a variety of pipe clamping and structural fastening needs.
Q What is the difference between Type A and Type B DIN 3570 U-bolts?
Type A and Type B refer to different configurations of DIN 3570 U-bolts. Type A is generally heavier than Type B for the same nominal diameter, as reflected in the 100-piece weight data. Type B is a lighter variant and is not available for larger nominal diameters (120mm and above).
Q What materials are DIN 3570 U-bolts made from?
DIN 3570 U-bolts are commonly manufactured in steel. When selecting U-bolts, important factors to consider include material, density, strength, color, and compressive strength to ensure suitability for the specific usage environment and requirements.
Q What pipe sizes are compatible with DIN 3570 U-bolts?
DIN 3570 U-bolts are compatible with a wide range of pipe sizes. For metric systems, pipe sizes range from DN20 up to DN500. For imperial (English) pipe sizes, compatibility ranges from 3/4" up to 4". Larger nominal diameter U-bolts (176mm and above) are primarily designed for metric pipe sizes only.
Q Do DIN 3570 U-bolts have anti-loosening and seismic performance?
Yes. DIN 3570 U-bolts are designed with both seismic performance and anti-loosening functionality, making them highly reliable for use in demanding industrial environments such as pipelines, structural frameworks, and transportation infrastructure.