Naing Steel stands as a trusted partner for industrial and construction projects across Naypyidaw and Myanmar, dedicated to providing robust solutions for the most demanding applications. We take pride in supplying high-grade S690QL steel sheets and plates, a material engineered for exceptional strength and resilience. Our commitment ensures that your ambitious projects are built on a foundation of reliable, locally-sourced quality, backed by our expert knowledge and dependable service to support the nation’s growing infrastructure.
The S690QL grade is defined by a carefully balanced composition that includes elements like carbon, manganese, and chromium, along with micro-alloying additions. This specific chemistry is the key to its outstanding mechanical properties, primarily a minimum yield strength of 690 MPa. This exceptional strength is complemented by excellent toughness, even in low temperatures, and good weldability, making it a high-performance steel that can withstand immense stress and heavy impact without compromising its structural integrity.
Thickness :Â 5MM & Above
Width : 1500 – 3500mm
Length : 3000 – 18000mm
Grade :Â S690QL EN10137-2 EN10025-6:2004, A709-100, DILLIMAX 690, NAXTRA 70, WELDOX 700, E690, JFE HITEN 780LE, ALFORM 700
|
Percentage % |
Element |
Percentage % |
Element |
|
0.050 |
Cu |
0.020 |
C |
|
0.070 |
Mo |
0.080 |
Si |
|
0.006 |
Nb* |
1.070 |
Mn |
|
2.00 |
Ni |
0.0025 |
P |
|
0.005 |
Ti* |
0.0015 |
S |
|
0.012 |
V* |
0.0015 |
N |
|
0.015 |
Zr* |
0.00050 |
B |
|
1.050 |
Cr |
| Â Plate Thickness | Yield Strength | Â Tensile Strength | Elongation | Â Impact Strength |
| MM | ReH (MPa) | Rm (MPa) | A5 % Minimum | J, Minimum |
| 3 to 50 |  690 |  770 – 940 |  14 |  30 @ -40º C |
|  > 50 to 100 | 650 |  760 – 930 |  14 |  30 @ -40º C |
| > 100 to 150 | 630 |  710 – 900 |  14 |  30 @ -40º C |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
The remarkable properties of S690QL steel make it the material of choice for critical, heavy-duty structures. You will find it essential in the construction of high-rise buildings, long-span bridges, and heavy machinery frames where reducing weight without sacrificing strength is paramount. It is also widely used in demanding applications like mining equipment, crane booms, and offshore platforms. Essentially, S690QL is specified wherever safety and performance are non-negotiable, ensuring structures and machinery can operate reliably under extreme loads and harsh environmental conditions.
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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