In the heart of Naypyidaw, Naing Steel stands as a dedicated manufacturer and supplier, committed to meeting the rigorous demands of modern industry. We take pride in producing ASME SA 387 Grade 91 Class 1 & 2 sheets and plates, materials engineered for exceptional performance under extreme conditions. Our focus is on delivering not just a product, but a reliable solution built on local expertise and a steadfast commitment to the highest international quality standards, supporting the growth and integrity of critical projects across Myanmar and beyond.
The strength of this material lies in its precise composition, primarily chromium and molybdenum, enhanced with vanadium, niobium, and nitrogen. This specific alloying creates a fine-grained microstructure that delivers outstanding mechanical properties. It offers remarkable tensile and yield strength, even when subjected to the intense heat of elevated temperatures. Furthermore, it maintains excellent toughness and resistance to oxidation, making it a robust choice for components that must perform reliably under sustained stress and thermal cycling.
| Standard | ASTM A387 / ASME SA387 |
|---|---|
| Width | 1000mm-3000mm |
| Thickness | 1.0mm – 200mm |
| Production | Hot-Rolled (HR) / Cold-Rolled (CR) |
| Grade | C | Ni | Mn | S | V | Al | Si | Nb | Cr | Mo | Nitrogen | P |
| A387 GR.91 CL.1 & 2 | 0.06-0.15 max | 0.43 max | 0.25-0.66 max | 0.012 max | 0.16-0.27 max | 0.05 max | 0.18-0.56 max | 0.05-0.11 max | 7.90-9.60 max | 0.80-1.10 max | 0.025-0.080 max | 0.025 max |
| Grade | A387 GR.91 CL.1 &2 | |||
| A387 GR.91 CL.1 &2 | Thickness mm | Yield Min Mpa | Tensile Mpa | Elongation Min % |
| t≦50 | 415 | 585-760 | 18 | |
| 50<t≦200 | – | – | – | |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Naing Steel is a trusted manufacturer and supplier of high-quality ASME SA 387 Grade 91 Class 1/2 Sheet and Plates in Naypyidaw, Myanmar. We specialize in premium steel products, including Alloy Steel, Carbon Steel, Mild Steel and Galvanized Steel, with a strong focus on Carbon Steel Sheet and Plates. Our extensive inventory also includes Pipes, Tubes, Flanges, Forged Fittings and Bars. Committed to fast delivery and exceptional customer service, we use only the finest raw materials to ensure superior strength, durability and performance for critical industrial applications. Contact us today for all your ASME SA 387 Grade 91 Class 1/2 Sheet and Plates needs!
These specialized plates are essential in the construction of high-temperature pressure vessels and boilers found in power generation plants, where efficiency and safety are non-negotiable. They are also widely used for reactor equipment in the petrochemical and refining industries, handling corrosive processes at scale. Beyond these core applications, this grade is specified for critical piping systems and heat exchangers, proving its value anywhere demanding environments require a material that won’t falter under pressure and heat.
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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