Product Name:Stem Ball
Surface Material:Tungsten Carbide
Surface Hardness:70(HRC)
Specifications:NPS 1"~4"(DN25~100)
Pressure Rating:Class 150~2500(PN16~420)
Base Material:ASTM A105,A350 LF2,A182 F304,A182 F316,A182 F6A,A182 F51,A182 F53,A564 630(17-4PH),Monel
Coatings:Chrome Carbide,Stellite,Inconel,Special
Support Type:Axle Sleeve
Drive:Straight Slot

http://www.dwvalve.com/ deweiball