Spheroidal graphite cast steel flange, rubber expansion joint，
Spheroidal graphite flange rubber expansion joint
Material Standards:
According to GB/T 17241.2-2024 "Cast Iron Pipe Flanges - Part 2: Class Series",
the material of the ductile iron cast steel flange should comply with the provisions of GB/T 1348.
The commonly used ductile iron materials include
QT400-18, QT450-10, QT450-18 and QT500-7, etc.
Pressure rating and size specification:
The nominal pressure of the ductile iron cast steel flange is divided into two types: Class 150 and Class 300.
The nominal size range is DN25-DN1200 (NPS1-NPS48).
Performance features:
Spheroidal graphite cast iron possesses high strength, high toughness and excellent wear resistance.
Therefore, spheroidal graphite cast steel flanges are capable of withstanding high pressure and resisting wear.
They can withstand higher pressures and harsher working conditions,
and are suitable for high-pressure, high-temperature and highly corrosive environments.
