Baimaoxing
Industrial-grade materials manufactured to strict international standards for global procurement needs.
15Mo3 steel plate is a designated pressure vessel and boiler-grade steel alloyed with molybdenum (Mo), conforming to EN 10028-2 specifications (often cross-referenced with DIN 17155 as 15Mo3, and modern equivalent 16Mo3). The addition of molybdenum (typically 0.25% to 0.35%) drastically improves the material's mechanical capabilities under elevated heat, specifically elevating its creep resistance and yield strength at operating temperatures up to 530°C.
Globally, heavy industrial systems demand absolute security against structural degradation. In systems like chemical processing plants, thermal power generator boilers, and oil cracking towers, steel is exposed to relentless thermal cycles and structural tension. Choosing high-purity OEM 15Mo3 steel plates guarantees structural viability, low thermal expansion coefficients, and optimal resistance against hydrogen embrittlement. As primary manufacturers, Chinese mills leverage precision ladle furnace refining and vacuum degassing to produce 15Mo3 plates with minimal trace impurities (such as sulfur and phosphorus), guaranteeing exceptional weldability and uniform thermal behavior.
| Chemical Element | Composition Range (%) | Mechanical Property | Standard Metric Value |
|---|---|---|---|
| Carbon (C) | 0.12 - 0.20% | Tensile Strength (Rm) | 450 - 600 MPa |
| Molybdenum (Mo) | 0.25 - 0.35% | Yield Strength (ReH) | ≥ 270 MPa (at room temp) |
| Silicon (Si) | 0.10 - 0.35% | Elongation (A5) | ≥ 22 - 24% |
| Manganese (Mn) | 0.40 - 0.90% | Impact Energy (KV 20°C) | ≥ 31 Joules |
The transition toward cleaner, high-efficiency energy systems has accelerated the demand for high-grade boiler steels. Ultra-supercritical (USC) thermal power stations, modern biomass energy conversion facilities, and advanced petrochemical refining units are operating at higher pressures and temperatures than ever. These developments place strict operational demands on pressure vessel plates. Consequently, procurement officers look beyond simple regional pricing and focus heavily on material trace element limits, grain-size refinement, and long-term creep fracture parameters.
For international buyers, the challenge lies in securing a reliable supply chain. A sudden spike in energy costs or logistics delays can halt major construction projects. Therefore, sourcing managers are prioritizing mills that offer fully customized OEM configurations (pre-cut, beveled, and rolled plates) coupled with complete certifications like EN 10204 3.1 or 3.2. As 15Mo3 remains a cornerstone grade for thermal processing equipment, our production focus targets strict normalization heat treatments to verify uniform grain structure throughout the plate's core cross-section.
Bridging the gap between raw manufacturing and high-precision structural optimization.
Our raw steel undergoes rigorous ladle furnace secondary refining (LF) and vacuum oxygen decarburization (VOD). This guarantees extremely low gas content (Hydrogen, Nitrogen, Oxygen) and minimizes inclusion levels, reducing the risk of internal micro-fissures.
Equipped with computerized hot rolling mills, we maintain tight thickness tolerances (within fractions of a millimeter). Online laser scanners continuously audit plate geometry, ensuring complete structural uniformity.
Every single plate is subjected to Ultrasonic Testing (UT) in accordance with ASTM A435/A578 standards. Normalization cycles are regulated via automated PLC furnaces to lock in target mechanical properties.
Located in Liaocheng City, Shandong Province, China, Shandong Baimaoxing Iron and Steel Co., Ltd. is a large-scale steel supplier specializing in research, development, custom fabrication, processing, global sales, and engineering technical services.
Our integrated business portfolio covers steel pipes, steel plates, round bars, steel coils, angle bars, flat bars, I-beams, stainless steel plates, stainless steel coils, stainless steel pipes, copper plates, copper bars, copper tubes, aluminum plates, aluminum tubes, aluminum coils, aluminum rods, titanium plates, titanium tubes, titanium coils, titanium rods, galvanized steel coils, PPGI, and more.
By executing an enterprise-wide scientific management model, Baimaoxing guarantees zero-defect logistics and high-precision production tracking. Our premium alloy plates and sections are designed for demanding, high-risk industrial environments globally.
Our structural products are widely used in advanced fields including aerospace engineering, military defense equipment, petrochemical refinery operations, automotive parts manufacturing, shipbuilding, high-precision machining, transportation and rail, and heavy machinery production.






Experience, expertise, and authority in industrial steel manufacturing.
We provide customers with steel and its deep processed products, as well as customized, specialized, and one-stop services.
Baimaoxing and its associates have a large number of outstanding professionals with many years of hands-on work experience in metallurgical engineering and quality inspection.
The company has obtained ISO9001:2015 certification, and some products have obtained SGS environmental testing reports, which comply with the EU ROHS standard.
A glimpse inside our production facility, showcasing raw materials processing, testing zones, and packing areas.


















Establishing collaborative ties across Europe, Asia, the Middle East, and beyond.






Explore deep processing capabilities and grades for structural and piping systems.
Our high-quality carbon steel round bars cover grades Q235B, A36, 1045 and 45#, with customizable diameters (5–300mm) and lengths up to 6m. Conforms to ASTM/GB standards.
Carbon steel refers to carbon steel with a carbon content of less than 0.8%. Divided into low carbon, medium carbon, and high carbon groups for custom stamping and profiling.
Sch40 Sch80 hot-rolled tubes, designed for manufacturing and structural framing. Offers high tensile strength, uniform wall thickness, and weld adaptability.
Premium plates covering structural profiles Q235B, Q355B, A36, and 1045. Full post-production bending, custom shearing, and welding services available.
15Mo3 alloy steel plate is designed to handle demanding industrial processes. Its performance makes it a preferred choice across several localized scenarios:
Answers to common technical, manufacturing, and shipping questions for engineers and supply chain professionals.
Choose from our full range of certified industrial metals, structural shapes, and high-performance alloys.