Applications of MS Pipes:
MS (Mild Steel) Pipes are among the most widely used steel products due to their strength, durability, and cost-effectiveness. They serve in structural, mechanical, industrial, and general fabrication purposes. Here’s a detailed list of their major applications:
Structural and Construction Uses
Industrial and Engineering Applications
Water and Plumbing Systems
Automotive and Transport Industry
Fabrication and General Purpose
Agricultural Applications
Round Pipe/ Circular Hollow Section (CHS)
Standards and Grades:
1. Under IS 1239 (Part 1): for water, gas, air supply etc.
Class A (Light Gauge) — thinner wall, lighter duty.
Class B (Medium Gauge) — mid-thickness.
Class C (Heavy Gauge) — thicker wall, heavier duty.
2. Under IS 1161: for structural purposes (round, square, rectangular hollow sections)
Structural grade YST210
Structural grade YST240
Structural grade YST310
Structural grade YST355
3. Under IS 3589: for water, sewage and drainage (large diameter)
Grade Fe 330
Grade Fe 410
| Standard Sizes of MS Round Pipes (Outer Dia) & Thickness | Standard Sizes of MS Round Pipes (Outer Dia) & Thickness |
| Size OD(mm) | Thickness (mm) |
| 21.3 | 1.6,1.8,2,2.2,2.5,2.8 |
| 26.4 | 1.6,1.8,2,2.2,2.5,2.8 |
| 33.7 | 1.6,1.8,2,2.2,2.5,2.8,3.2,3.6 |
| 38.1 | 3.2,3.6,4,4.5,5,6,8 |
| 42.4 | 1.6,1.8,2,2.2,2.6,2.9,3.2,3.6 |
| 48.3 | 1.6,1.8,2,2.2,2.6,2.9,3.2,3.6,4,4.5,5,6,8 |
| 60.3 | 1.6,2,2.3,2.6,2.9,3.2,3.6,4,4.5,5,6,8 |
| 71.5 | 3.2,3.6,4,4.5,5,6,8 |
| 76.2 | 2,2.3,2.6,2.9,3.2,3.6,4,4.5,5,6,8 |
| 88.9 | 2,2.3,2.6,2.9,3.2,3.6,4,4.5,5,6,8,10 |
| 101.6 | 2,2.3,2.6,2.9,3.2,3.6,4,4.5,5 |
| 114.3 | 2,2.3,2.6,2.9,3.2,3.6,4,4.5,5,6 |
| 127 | 2.6,2.9,3.2,3.6,4,4.5,5,6 |
| 139.7 | 2.6,2.9,3.2,3.6,4,4.5,5,6,8 |
| 165.1 | 2.6,2.9,3.2,3.6,4,4.5,5,6,8 |
| 168.3 | 2.6,2.9,3.2,3.6,4,4.5,5,6,8 |
| 193.7 | 2.6,2.9,3.2,3.6,4,4.5,5,6,8 |
| 219.7 | 2.6,2.9,3.2,3.6,4,4.5,5,6,8,10 |
| 254 | 4,5,6,8,10 |
| 273.1 | 5,6,8,10,12 |
| 323.9 | 5,6,8,10,12 |
| 355.6 | 6,8,10,12 |
| 377 | 6,8,10,12 |
| 406.4 | 6,8,10,12 |
Square Pipes/Square Hollow Sections (SHS)
Standards and Grades:
1. Under IS 4923:2017: For Structural & Engineering
Structural grade YST210
Structural grade YST240
Structural grade YST310
Structural grade YST355
2. Under IS 18573:2024: Cold form sections for mechanical,General Engineering & Decorative Purposes.
Structural grade YST210
Structural grade YST240
Structural grade YST310
Structural grade YST355
| Standard Sizes of MS Square Hollow Section Pipes & Thickness | |
| Size (mm) | Thickness (mm) |
| 12×12 | 1.6 , 2 |
| 15×15 | 1.6, 2, 2.2 |
| 20×20 | 1.6,2,2.2,2.5 |
| 25×25 | 1.6,2,2.2,2.5,2.8 |
| 30×30 | 1.6,2,2.2,2.5,2.8,3.2,3.6,4,4.5,5,5.4,6 |
| 32×32 | 1.6,2,2.2,2.5,2.8,3.2 |
| 38×38 | 1.6,2,2.2,2.5,2.8,3.2,3.6 |
| 40×40 | 1.6,2,2.2,2.5,2.8,3.2,3.6,4,4.5,5,5.4,6,8 |
| 45×45 | 1.6,2,2.2,2.5,2.8,3.2,3.6,4 |
| 50×50 | 1.6,2,2.2,2.5,2.8,3.2,3.6,4,4.5,5,5.4,6,8 |
| 60×60 | 2,2.2,2.5,2.8,3.2,3.6,4,4.5,5,5.4,6,8 |
| 72X72 | 2,2.2,2.5,2.8,3.2,3.6,4,4.5,5,5.4,6,8 |
| 75×75 | 2,2.2,2.5,2.8,3.2,3.6,4,4.5,5,5.4,6 |
| 80×80 | 2,2.2,2.5,2.8,3.2,3.6,4,4.5,5,5.4,6 |
| 91.5X91.5 | 2,2.2,2.5,2.8,3.2,3.6,4,4.5,5.4,6 |
| 100×100 | 2.2,2.5,2.8,3.2,3.6,4,4.5,5,5.4,6,8 |
| 113×113 | 2.5,2.8,3.2,3.6,4,4.5,5,5.4,6,8 |
| 120×120 | 2.8,3.2,3.6,4,4.5,5,5.4,6,8 |
| 125X125 | 2.8,3.2,3.6,4,4.5,5,5.4,6,8 |
| 150×150 | 3.6,4,4.5,5,5.4,6,8,10 |
| 175×175 | 4,4.5,5,5.4,6,810 |
| 180×180 | 4,4.5,5,6,8,10 |
| 200×200 | 4.5,5,5.4,6,8,10,12,14 |
| 220X220 | 5,5.4,6,8,10,12 |
| 225X225 | 5,5.4,6,8,10,12 |
| 250×250 | 6,8,10,12,14 |
| 275×275 | 6,8,10,12,14 |
| 300×300 | 8,10,12,14,16,18,20 |
| 325X325 | 6,8,10,12,14,16,18,20 |
| 350X350 | 6,8,10,12,14,16,18,20 |
| 400X400 | 6,8,10,12,14,16,18,20 |
| 450X450 | 8,10,12,14,16,18,20 |
| 500X500 | 8,10,12,14,16,18,20 |
Rectangular Pipe/ Rectangular Hollow Section (RHS)
Standards and Grades:
1. Under IS 4923:2017: For Structural & Engineering
Structural grade YST210
Structural grade YST240
Structural grade YST310
Structural grade YST355
2. Under IS 18573:2024: Cold form sections for mechanical,General Engineering & Decorative Purposes.
Structural grade YST210
Structural grade YST240
Structural grade YST310
Structural grade YST355
| Standard Sizes of MS Rectangular Hollow Section Pipes & Thickness | |
| Size (mm) | Thickness (mm) |
| 26×13 | 1.6,2 |
| 30×20 | 1.6,2 |
| 40×10 | 1.6,2,2.2,2.5 |
| 40×20 | 1.6,2,2.2,2.5 |
| 40×25 | 1.6,2,2.2,2.5 |
| 40×30 | 1.6,2,2.2,2.5 |
| 50×25 | 1.6,2,2.2,2.5 |
| 50×30 | 1.6,2,2.2,2.5,2.8,3.2,3.6,4 |
| 60×40 | 1.6,2,2.2,2.5,2.8,3.2,3.6,4,4.5,5,6,8 |
| 66×33 | 1.6,2,2.2,2.5,2.8,3.2 |
| 70×50 | 3,3.2,3.6,4,4.5,5,6,8 |
| 75×25 | 1.6,2,2.2,2.6 |
| 75×50 | 1.6,2,2.2,2.5,2.8,3.2,3.6,4 |
| 80×40 | 1.6,2,2.2,2.5,2.8,3.2,3.6,4 |
| 96×48 | 1.6,2,2.2,2.5,2.8,3.2,3.6,4,4.5 |
| 95×25 | 1.6,2,2.5,2.9 |
| 100×25 | 1.6,2,2.5,2.9 |
| 100×50 | 1.6,2,2.2,2.5,2.8,3.2,3.6,4,4.5,5,6,8 |
| 122×61 | 1.6,2,2.2,2.5,2.8,3.2,3.6,4,4.5,5,6 |
| 145×82 | 2.5,2.8,3.2,3.6,4,5,6 |
| 150×25 | 1.6,2,2.2,2.6 |
| 150×50 | 1.6,2,2.2,2.5,2.8,3.2,3.6,4,4.5,5 |
| 150×75 | 2.5,2.8,3.2,3.6,4,5,6 |
| 150×100 | 2.8,3.2,3.6,4,5,6,8 |
| 172×92 | 2.5,2.9,3.2,3.6,4,5,6,8 |
| 200×100 | 2.8,3.2,3.6,4,5,6,8 |
| 240×120 | 4,5,6,8 |
| 250×100 | 4,5,6,8 |
| 250×150 | 4,5,6,8,10 |
| 280×100 | 4,5,6 |
| 300×150 | 4,5,6,8,10 |
| 300×200 | 4,5,6,8,10,12,14 |
| 350×250 | 5,6,8,10,12 |
| 400×200 | 5,6,8,10,12,14 |
| 400×300 | 6,8,10,12,14,16,18,20 |
| 500×200 | 6,8,10,12,14,16 |
| 500×300 | 8,10,12,14,16,18,20 |
| 600×200 | 6,8,10,12,14,16 |
| 600×300 | 8,10,12,14,16,18,20 |
| 600×400 | 8,10,12,14,16,18,20 |








