Naing Steel stands as a trusted manufacturer and supplier in the heart of Naypyidaw, Myanmar, dedicated to supporting the nation’s growth with robust and reliable materials. We take pride in producing High-Strength Fine-Structure (HFS) Tubing, a cornerstone for modern industrial and construction projects. Our commitment goes beyond mere supply; we aim to be a partner in progress, ensuring that every length of tubing meets the highest standards of quality and performance, helping to build a stronger, more resilient future for our communities.
The composition of our HFS Tubing is engineered for superior performance, utilizing a carefully balanced low-carbon steel that allows for excellent weldability and formability. This is achieved through a controlled manufacturing process that refines the steel’s internal structure, resulting in exceptional mechanical properties. The tubing offers a remarkable yield and tensile strength, providing a significant load-bearing capacity without adding excessive weight. This combination of strength and ductility makes it capable of withstanding substantial stress and deformation, ensuring long-term structural integrity in demanding applications.
| Grade | Chemistry         %   | Yield | Tensile | Elongation | Typical Hardness | |
|               | PSI | PSI | % in 2″ section | Min | ||
| 1020 | Carbon | 0.18-0.23 | 32,000 | 50,000 | 25 | B-55 |
| MN | 0.30-0.60 | |||||
| P | 0.040 Max | |||||
| S | 0.050 Max | |||||
| 1026 | Carbon | 0.220-0.280 | 35,000 | 55,000 | 25 | B-60 |
| MN | 0.600-0.900 | |||||
| P | 0.040 Max | |||||
| S | 0.050 Max | |||||
| Wall Thickness Range as a Percent of Outside Diameter | % Over and Under Nominal Wall | |||||||
| OD up to 2.999″ | OD 3.00″- 5.999″ | OD 6.00″- 10.750″ | ||||||
| Walls Under 15% of nominal O.D. | 12.50% | 10.00% | 10.00% | |||||
| Walls Over 15% of nominal O.D. | 10.00% | 7.50% | 10.00% | |||||
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| Nominal Wall Thickness | ||||||||||||||||||||
| DIA | SCH.5S | SCH.5 | SCH 10S | SCH.10 | SCH.20S | SCH.30 | SCH.40S | SCH.40 | SCH 60 | |||||||||||
| (A) | (B) | Meter MM | Wall Thk | Weight Kg/Mtr | Wall Thk | Weight Kg/Mtr | Wall Thk | Weight Kg/Mtr | Wall Thk | Weight Kg/Mtr | Wall Thk | Weight Kg/Mtr | Wall Thk | Weight Kg/Mtr | Wall Thk | Weight Kg/Mtr | Wall Thk | Weight Kg/Mtr | Wall Thk | Weight Kg/Mtr |
| 6 | 1/8 | 10.3 | 1 | 0.23 | Â | Â | 1.2 | 0.27 | Â | Â | 1.5 | 0.33 | Â | Â | 1.73 | 0.37 | Â | Â | Â | Â |
| 8 | 1/4 | 13.7 | 1.2 | 0.37 | Â | Â | 1.65 | 0.49 | Â | Â | 2 | 0.58 | Â | Â | 2.24 | 0.64 | Â | Â | Â | Â |
| 10 | 3/8 | 17.2 | 1.2 | 0.47 | Â | Â | 1.65 | 0.63 | Â | Â | 2 | 0.74 | Â | Â | 2.31 | 0.87 | Â | Â | Â | Â |
| 15 | 1/2 | 21.3 | 1.65 | 0.01 | 1.65 | 0.81 | 2.11 | 1.02 | 2.11 | 1.02 | 2.5 | 1.15 | Â | Â | 2.77 | 1.29 | Â | Â | Â | Â |
| 20 | 3/4 | 26.7 | 1.65 | 1.03 | 1.65 | 1.03 | 2.11 | 1.3 | 2.11 | 1.3 | 2.5 | 1.49 | Â | Â | 2.87 | 1.71 | Â | Â | Â | Â |
| 25 | 1 | 33.4 | 1.65 | 1.31 | 1.65 | 1.31 | 2.77 | 2.13 | 2.77 | 2.13 | 3 | 2.24 | Â | Â | 3.38 | 2.54 | Â | Â | Â | Â |
| 32 | 11/4 | 24.2 | 1.65 | 1.67 | 1.65 | 1.67 | 2.77 | 2.73 | 2.77 | 2.73 | 3 | 2.9 | Â | Â | 3.56 | 3.44 | Â | Â | Â | Â |
| 40 | 11/2 | 48.3 | 1.65 | 1.93 | 1.65 | 1.93 | 2.77 | 3.16 | 2.77 | 3.16 | 3 | 3.35 | Â | Â | 3.68 | 4.11 | Â | Â | Â | Â |
| 50 | 2 | 60.3 | 1.65 | 1.93 | 1.65 | 2.42 | 2.77 | 3.99 | 2.77 | 3.99 | 3.5 | 4.9 | Â | Â | 3.91 | 5.52 | Â | Â | Â | Â |
| 65 | 21/2 | 73 | 2.11 | 3.75 | 2.11 | 3.75 | 3.05 | 5.34 | 3.05 | 5.34 | 3.5 | 6 | Â | Â | 5.16 | 8.77 | Â | Â | Â | Â |
| 80 | 3 | 88.9 | 2.11 | 4.59 | 2.11 | 4.59 | 3.05 | 6.56 | 3.05 | 6.56 | 4 | 8.37 | Â | Â | 5.49 | 11.47 | Â | Â | Â | Â |
| 90 | 31/2 | 101.6 | 2.11 | 5.25 | 2.11 | 5.25 | 3.05 | 7.53 | 3.05 | 7.53 | 4 | 9.62 | Â | Â | 5.74 | 13.78 | Â | Â | Â | Â |
| 100 | 4 | 114.3 | 2.11 | 5.93 | 2.11 | 5.93 | 3.05 | 8.5 | 3.05 | 8.5 | 4.5 | 12.18 | Â | Â | 6.02 | 6.32 | Â | Â | Â | Â |
| 125 | 5 | 141.3 | 2.77 | 9.61 | 2.77 | 9.61 | 3.4 | 11.74 | 3.43 | 11.74 | 5 | 16.8 | Â | Â | 6.55 | 2210 | Â | Â | Â | Â |
| 150 | 6 | 168.3 | 2.77 | 11.47 | 2.77 | 11.47 | 3.4 | 14.04 | 3.43 | 14.04 | 5.5 | 22.08 | Â | Â | 7.11 | 28.69 | Â | Â | Â | Â |
| 200 | 8 | 219.1 | 2.77 | 15 | 2.77 | 15 | 3.76 | 20.77 | 3.76 | 20.27 | 6.35 | 33.82 | 7.04 | 37.38 | 8.18 | 43.2 | Â | Â | 10.81 | 53.9 |
| 250 | 10 | 273.1 | 3.4 | 22.95 | 3.4 | 22.95 | 4.19 | 28.2 | 4.19 | 28.2 | 6.35 | 42.41 | 7.8 | 51.81 | 9.27 | 61.22 | Â | Â | 12.2 | 82.8 |
| 300 | 12 | 323.9 | 3.96 | 31.72 | 4.19 | 33.6 | 4.57 | 36.54 | 4.57 | 36.54 | 6.35 | 50.48 | 8.38 | 66.2 | 9.53 | 75.01 | 10.31 | 80.94 | 14.27 | 110.62 |
| 350 | 14 | 355.6 | 3.96 | 34.86 | Â | Â | 4.78 | 41.99 | 6.35 | 55.53 | 7.92 | 68.95 | 9.53 | 82.58 | 9.53 | 82.58 | 11.13 | 96 | 15.06 | 128.42 |
| 400 | 16 | 406.4 | 4.19 | 42.2 | Â | Â | 4.78 | 48.07 | 6.35 | 63.61 | 7.92 | 79.03 | 9.53 | 94.7 | 9.53 | 94.7 | 12.7 | 125.2 | 16.66 | 162.59 |
| 450 | 18 | 457.2 | 4.19 | 47.46 | Â | Â | 4.78 | 54.15 | 6.35 | 71.69 | 7.92 | 89.1 | 11.13 | 124.32 | 9.53 | 106.83 | 14.27 | 158.27 | 19.05 | 209 |
| 500 | 2C | 508 | 4.78 | 60.23 | Â | Â | 5.54 | 69.7 | 6.35 | 79.76 | 9.53 | 118.93 | 12.7 | 157.51 | 9.53 | 118.9 | 15.06 | 185.89 | 2062 | 251.65 |
| 550 | 22 | 558.8 | 4.78 | 65.95 | Â | Â | 5.54 | 76.75 | 6.35 | 87.84 | 9.53 | 131.07 | 12.7 | 173.66 | 9.53 | 131.07 | 15.88 | 216.04 | 22.23 | 298.55 |
| 600 | 24 | 609.6 | 5.54 | 83.8 | Â | Â | 6.35 | 95.92 | 6.35 | 95.92 | 9.53 | 143.2 | 14.27 | 212.72 | 9.53 | 143.2 | 17.45 | 258.74 | 24.59 | 360.21 |
| 650 | 26 | 660.4 | Â | Â | Â | Â | Â | Â | 7.92 | 129.4 | 12.7 | 205.97 | Â | Â | 9.53 | 155.32 | Â | Â | Â | Â |
| 700 | 28 | 711.2 | Â | Â | Â | Â | Â | Â | 7.92 | 139.47 | 12.7 | 222.13 | 15.88 | 276.48 | 9.53 | 167.44 | Â | Â | Â | Â |
| 750 | 3C | 762 | 6.35 | 120.15 | Â | Â | 7.92 | 149.55 | 7.92 | 149.55 | 12.7 | 238.28 | 15.88 | 296.68 | 9.53 | 179.56 | Â | Â | Â | Â |
| 800 | 32 | 812.8 | Â | Â | Â | Â | Â | Â | 7.92 | 159.62 | 12.7 | 254.44 | 15.88 | 316.88 | 9.53 | 191.69 | 17.48 | 348.11 | Â | Â |
| 850 | 34 | 863.6 | Â | Â | Â | Â | Â | Â | 7.92 | 169.64 | 12.7 | 270.5 | 15.88 | 336.96 | 9.53 | 203.74 | 17.48 | 370.22 | Â | Â |
| 900 | 36 | 914.4 | Â | Â | Â | Â | Â | Â | 7.92 | 179.77 | 12.7 | 286.75 | 15.88 | 357.28 | 9.53 | 215.93 | 19.05 | 427.09 | Â | |
The versatility of HFS Tubing makes it indispensable across numerous sectors. In construction, it forms the sturdy skeleton for modern buildings and large-scale infrastructure. Industrial machinery relies on it for critical frames, supports, and hydraulic systems where strength is non-negotiable. You’ll also find it in agricultural equipment, in the frameworks for commercial vehicles, and even in creative architectural designs. Essentially, wherever a project demands a combination of high strength, durability, and a lightweight profile, our HFS Tubing provides a dependable and efficient solution.
Naing Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Naypyidaw, Myanmar.
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