U Bolt
MNK INDUSTRY is also a manufacturer and supplier of different U Bolts, J bolts, Eye Bolts, L bolts, Stud bolts, Transformer clamping ring, Transformer Arcing Horn, High Tension fittings, Threaded rods, Pipe Clamps, Pole clamps, J bolts, Dholak bolts, Saddle clamps, foundation bolts, submersible pipe clamps, submersible U clamps and more hardware related products.
What is a U Bolt ?
U bolt is a bolt that has been formed in the shape of the letter U. Since the letter you has curved ends it can be easily fitted around the pipes or Tubing. U bolts can be used to support and secure piping work and also work as restraints. The main reason that they use it over the piping is that it prevents the pipe from moving or striking each other which results in wearing down. This U bold is made up of many kinds of materials because it should be non-corrosive and should have long durability. In the market, the common U bolts material available is plain carbon steel, 316 stainless steel, and lastly 304 stainless steel materials. If the bolts have to be non-corrosive a layer of coating that is protective coating should be applied. The common type of coating is zinc plating, hot-dip galvanization, fluoropolymer coating, Thermoplastic coating.
The stainless-steel material will have a nickel plating and this process is carried out by using electricity. Similarly, hot-dip galvanization is also the process of adding zinc but it gives a thicker coating because the bold itself is dunkin in the molten zinc and can be easily used under water as well.
Fluoropolymer is a mixture of elements that are applied over stainless steel, commonly a mixture of elements are xylan, Teflon, or PTFE. The thermoplastic process involves adding buffers to the materials (Tavares et. Al., 2020).
There are many types in the U bolts. The SS square U bolts are made up of stainless steel. The SS 316 U bolts are most commonly used because they have a good corrosion resistance where it is compared to the 304 U bolts but the 316 U bolts are a little bit expensive as well.
MNK INDUSTRY is one of the leading manufacturers of U Bolts, Eye Hooks, Transformer Clamps and other Hardware products in India.
Different Industries for which U bolts are used
- Construction
- Automobile Industries - Motor and Engine Shaft component fasteners
- Leaf Spring U Bolts
- Power Transmission Wire and Cable Fasteners
- Framing System
- Petrol and chemical Industries
- Construction
- Solar Panel Structures
- Piping Support
- Conduit Support
- Foundation and Roof Anchor
- Transformers
Standard U Bolt Dimensions for Pipes in Inches
Sr No. | Nominal Pipe Size | Thread Size(QA) | Between Centres (N in mm) | Depth of U (M in mm) | Thread Length (K in mm) |
1 | 1/2″ | M6 | 28 | 48 | 30 |
2 | 3/4″ | M6 | 34 | 53 | 30 |
3 | 1″ | M6 | 41 | 60 | 30 |
4 | 1.1/4″ | M10 | 54 | 67 | 30 |
5 | 1.1/2″ | M10 | 60 | 85 | 35 |
6 | 2″ | M10 | 75 | 95 | 35 |
7 | 2.1/2″ | M12 | 90 | 124 | 55 |
8 | 3″ | M12 | 102 | 126 | 50 |
9 | 4″ | M12 | 131 | 144.5 | 50 |
10 | 5″ | M12 | 156 | 182 | 50 |
11 | 6″ | M12 | 182 | 210 | 50 |
12 | 8″ | M16 | 240 | 252 | 50 |
13 | 10″ | M16 | 292 | 318 | 50 |
14 | 12″ | M16 | 343 | 363.6 | 50 |
Standard U Bolt Dimensions for Steel Pipes in NB
Sr No. | Nominal Pipe Size (NB) | OD | Thread Size(QA in mm) | Between Centres (N in mm) | Depth of U (M in mm) | Thread Length (K in mm) |
1 | 15 | 21.8 | M6 | 38 | 45 | 25 |
2 | 20 | 27.3 | M6 | 44 | 49 | 30 |
3 | 25 | 34.2 | M8 | 52 | 55 | 30 |
4 | 32 | 42.9 | M8 | 62 | 65 | 30 |
5 | 40 | 48.8 | M8 | 66 | 75 | 40 |
6 | 50 | 60.8 | M8 | 80 | 85 | 40 |
7 | 65 | 76.6 | M8 | 94 | 100 | 50 |
8 | 80 | 89.5 | M12 | 112 | 120 | 55 |
9 | 100 | 115 | M12 | 136 | 145 | 55 |
10 | 125 | 140.8 | M12 | 162 | 170 | 55 |
11 | 150 | 166.5 | M16 | 194 | 205 | 65 |
12 | 175 | 194 | M16 | 220 | 230 | 65 |
13 | 200 | 219.1 | M16 | 246 | 260 | 65 |
14 | 225 | 244.5 | M16 | 272 | 285 | 65 |
15 | 250 | 273.1 | M16 | 300 | 315 | 65 |
16 | 300 | 323.9 | M20 | 354 | 372 | 65 |
17 | 350 | 355.6 | M20 | 386 | 400 | 80 |
18 | 400 | 406.4 | M20 | 436 | 450 | 80 |
19 | 450 | 457 | M25 | 493 | 510 | 80 |
20 | 500 | 508 | M25 | 545 | 565 | 80 |
21 | 550 | 559 | M25 | 595 | 615 | 80 |
22 | 600 | 610 | M25 | 645 | 670 | 80 |
Standard U Bolt Dimensions for Cast Iron Pipes in NB
Sr No. | Nominal Pipe Size (NB) | OD | Thread Size(QA in mm) | Between Centres (N in mm) | Depth of U (M in mm) | Thread Length (K in mm) |
1 | 80 | 98 | M12 | 120 | 134 | 55 |
2 | 100 | 118 | M12 | 140 | 150 | 55 |
3 | 150 | 170 | M16 | 196 | 205 | 65 |
4 | 200 | 222 | M16 | 248 | 260 | 65 |
5 | 250 | 274 | M16 | 300 | 315 | 65 |
6 | 300 | 326 | M20 | 356 | 372 | 65 |
7 | 350 | 378 | M20 | 408 | 425 | 80 |
8 | 400 | 429 | M20 | 460 | 475 | 80 |
9 | 450 | 480 | M25 | 515 | 540 | 80 |
10 | 500 | 532 | M25 | 567 | 590 | 80 |
11 | 600 | 635 | M25 | 671 | 695 | 80 |
Different material in which U Bolts are manufactured-
- Mild Steel
- Solid Steel (SS)
- Copper
Different types of finishing in which U Bolts are manufactured -
- Hot Dip GI Coating
- Zinc Coating
- Black Powder Coating
- Nickel Coating
- Zinc and Yellow chromate coating
- Plain Finish without coating
MNK INDUSTRY is a U Bolt manufacturer in India and is a supplier and distributor in different cities of India -
- Delhi
- Bangalore
- Mumbai
- Chennai
- Hyderabad
- Kolkata
- Pune
- Moradabad
- Nagpur
- Raipur
- Vijaywada
- Tiruppur
- Tirupur
- Ahmedabad
- Thane
- Agra
- Nashik
- Kochin
- Ludhiana
- Noida
- Gwalior
- Bareilly
- Gandhinagar
- Salem
- Surat
- Jaipur
- Firozabad
- Meerut
- Rajkot
- Kanpur
- Faridabad
- Ludhiana
- Saharanpur
- Muzzafarnagar
- Ghaziabad
- Jaipur
- Viahakapatnam
- Varanasi
- Panna
- Bhuwaneswar
- Bhiwandi
- Gujarat
- Indore
- Chennai
- Jamshedpur