... 3.Grade:G100 4.1/2",3/4" 1,1/4' 1,1/2' 1/2",3/4" 1,1/4' 1,1/ ... 2' Thread Ball Valves Stainless Steel 304 1.steel ball specification: 1 ... )material:AISI 1006, AISI 1008, AISI 1010, AISI 10152)Size:0 ... surface quality and high hardness.7)Using:1. General industry for automobile, motorcycle, ...