This international standard covers design, manufacturing, testing and documentation requirements for ball, check, gate and plug valves in oil & gas systems (ISO 13623 compliant). Valves exceeding PN 420 (Class 2500) are excluded.The main gate valves product names of China gate Valve Network include:Electric Slurry ValveElectric Flange Gate Valve,Fire Special Signal Relisient Seat Seal Gate Valve,Fire Special Rising Stem Resilient Seat Seal Gate Valve,Forged Steel Socket Welding Valve,Forged Steel Flange Gate Valve

GB Bellows Wedge Gate Valve,High Temperature & pressure Power Station Gate Valve,Inside Screw Non-rising Stem Wedge Gate Valve,Insulation Jacket Gate Valve,Lined Gate Valve,

• ISO 148 Steel – Charpy impact test (V-notch)

• ASTM A193/A193M High-temperature bolting materials

• ASTM A320/A320M Low-temperature bolting materials

• ASTM A370 Mechanical testing of steel products

• NACE MR 0175 Anti-sulfide stress cracking materials

• NACE TM 0177 H₂S environment cracking resistance testing

• NACE TM 0284 Hydrogen-induced cracking assessment
  (NACE International, Houston)                                                                                                   Do you still need to know or purchase the following gate valve products:                 

  • High Temperature & pressure Power Station Gate Valve
• Inside Screw Non-rising Stem Wedge Gate Valve
• Insulation Jacket Gate Valve
• Lined Gate Valve
• MZ44W Rising Stem Gas Quick Open&close Parallel
• MZ48W Manual Non-rising Stem City Gas Quick Gate Valve