service life is long,high security, widely used, such as Sany, Zoomlion,PM,Schwing in ... ,CE8M,CF3,CF3M,etc.5) Type:Scoket-weld,Welding neck,slip on,etc6) Pressure Class:150-2500LB,5-30K,PNO.25-32Mpa7 ... class,pallet or as pre customers request8) Special design available slip on flange