Type：cast，lift，pressure seal bonnet

Nominal Size NPS：2"~8"

Pressure Grade Class：900~2500

Working Temperature：-29℃~550℃

Body Material： Carbon steel, Alloy steel,Stainless steel, Duplex stainless steel, Nickel alloy, etc

Design standard：API6D,BS1868，ASME B16.34，GB/T12236

Type of connection：BW,RF,RTJ

Operating：auto

Applicable medium：Water, Steam, Oil, Corrosive medium, etc