CE/ISO/DIN Forged Stainless Steel 304/316 CF8 -196 Degree PN250 DN80/DN100 Ultralow Cryogenic Temperature Ball Valve

TIANYU Forged Stainless Steel Ball Valves: High-Performance Solutions for Industrial Fluid Control

I. Core Attributes: Full-Specification Parameters and Material Advantages

• Diameter Range: DN15~DN300 (1/2″~12″), covering small to medium pipeline applications.
• Pressure Classes: PN16~PN160 (1.6MPa~16MPa)/Class 150~Class 900, with a maximum pressure rating of 16MPa, compliant with ASME B16.34, API 6D, and other international standards.

• Body Material: Valve body, ball, and stem forged from 304 (CF8), 304L (CF3), 316 (CF8M), or 316L (CF3M) stainless steel, with tensile strength ≥515MPa and grain size ≥ASTM Grade 5. Superior corrosion resistance for -29°C~425°C media and acidic/alkaline/saline environments.
• Sealing System:
  • Soft Seal: PTFE/PEEK seats with leakage rate ≤0.5cc/min (API 598 Class IV), suitable for clean media;
  • Metal Hard Seal: Stellite alloy surfacing (HRC60+ hardness), meeting API 6D Class VI bubble-tight standards, excellent for particle-resistant applications.

• Actuation Methods: Manual (standard handwheel), worm gear, electric, or pneumatic (explosion-proof optional), operating torque ≤300N·m, compatible with DCS remote control.
• End Connections: Flanged (RF/RTJ), butt weld (BW), socket weld (SW), compliant with ASME B16.5, EN 1092-1, and other global pipeline standards.

• International Certifications: CE, ISO 9001, API 608, ATEX (explosion-proof), WRAS (potable water), covering market access in Europe, America, the Middle East, and Southeast Asia.
• Customization Services: OEM/ODM support, including special materials (e.g., Hastelloy), anti-condensation coatings (500μm thickness), and brand laser engraving.

II. Manufacturing Processes: Forging Technology and Precision Engineering

(1) Forging Technology

• Vacuum Forging: Mold forged using a 1,600-ton press, improving density by 5% and reducing internal defects to <0.3%. Impact resistance is 30% higher than cast steel, suitable for high-pressure vibration scenarios.
• Solution Treatment: Forged parts annealed at 1,050°C to eliminate stress, passing intergranular corrosion tests (ASTM A262 E method) for stable corrosion resistance.

(2) Precision Machining and Inspection

• 5-Axis Machining: Valve seat sealing surfaces with Ra≤0.8μm roughness and IT5 precision, achieving 0.003mm-level error control via laser interferometry.
• Full-Process Quality Control:
  • PMI Spectral Analysis: 100% material composition testing (e.g., 316L Mo content ≥2.0%);
  • Pressure Testing: Shell hydrostatic test (1.5x pressure, 30-minute hold) and seal test (1.1x pressure, 15-minute hold), leakage rate ≤0.1cc/min;
  • NDT: Ultrasonic (UT) and magnetic particle (MT) testing for DN≥200mm bodies to ensure no cracks or inclusions.

(3) Structural Design Highlights

• Floating Ball (DN≤200mm): Floating ball with spring-loaded seats for automatic wear compensation, reducing operating torque by 25% for medium-low pressure quick operation.
• Trunnion Ball (DN≥250mm): Trunnion-supported ball with ≤200N·m torque, paired with worm gear drives for large-bore high-pressure applications.
• Fire-Safe Design: Compliant with API 607, featuring graphite emergency seals for automatic metal-to-metal sealing if soft seals fail, preventing fire-related leaks.