Technical Manual for S31050 Stainless Steel Bars
2025 年 9 月 21 日
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Hydropower Steel – Precision Steel for Clean Energy Infrastructure
We supply high-quality alloy and structural steels for hydropower applications, including turbine runners, penstocks, bearing shafts, spiral casings and generator components.
What Is Hydropower Steel?
Hydropower steel is a specialized structural and alloy steel used in dam, hydropower station, and turbine construction, engineered to meet the challenges of:
High pressure water impact erosion
Cyclic stress & vibration fatigue
High weldability and impact resistance
Excellent low-temperature toughness
These materials require fine grain structure, excellent homogeneity, and often NDT inspection to ensure structural safety and lifespan in critical energy applications.
Products Link
Optional product specifications
| Property | Details |
|---|---|
| Forms | Heavy plate, forged block, ring, shaft, pipe |
| Typical Grades | Q345D/E, 20Mn5, 30CrMo, 30CrNiMo8, 16MnDR, HY100, ASTM A350 LF2 |
| Thickness (Plate) | 10mm – 300mm |
| Forged Shafts | Ø100mm – 1000mm, L up to 12m |
| Standards | GB/T 700, GB/T 11251, EN 10028, ASTM A350, ASME SA266 |
| Condition | Q+T, annealed, normalized, UT Level II / III |
| Inspection | UT, RT, MT, Charpy V-notch at -20°C/-40°C |
100% Ultrasonic Testing + Z15/Z25 lamellar tear resistance available.
Processing & Packaging
Heat treatment (Q+T, annealing, stress relief)
Rough and final machining for shaft and flanges
UT/RT/MT with reports by SGS, TUV or per ASME/EN
Anti-corrosion coating for shipment
Marking: project code, heat no., size, batch
Seaworthy wooden box, steel saddle, or plastic wrap + pallet
Why Buy From Xishang?
- Expertise in large forgings and heavy plates for power industry
- Grades with excellent weldability and low-temperature toughness
- 100% UT and mechanical property guaranteed
- Precise heat treatment and CNC machining for shafts
- Full project traceability & technical documents
- Support for trial piece before full production
Frequently Asked Questions
Q1: What steel grades are most common for turbine runners or shafts?
A:
30CrNiMo8, 20Mn5, and 42CrMo4 are common for forged shafts. For weldable components, Q345D/E or HY100 are often used.
Q2: Do you provide UT or third-party inspection reports?
A:
Yes. All hydropower steel is 100% ultrasonic tested and can be accompanied by SGS, BV, or customer-designated inspection.
Q3: Can you handle large shaft or ring forgings?
A:
Yes. Our capacity covers shafts up to 12m, forged rings to 3000mm diameter, and over 10 tons in weight.
Q4: What toughness level is guaranteed for plates?
A:
Charpy V-notch impact test at -20°C or -40°C is standard depending on grade.
Q5: Do you accept custom drawings or machining requests?
A:
Absolutely. We support rough and finish machining based on detailed project drawings.
Let us know your required grade
Xishang is a trusted partner for hydropower EPCs and energy equipment manufacturers. We deliver certified, application-ready materials tailored for clean energy infrastructure.
