weld sutds, welding stud 1)Material:carbonsteel 2)properties: GB/T10433,ANSI/AWSD1.1-92,JISB1198-82,ISO13918 weld studs, welding stud1)Material:carbon steel2)properties:GB/T10433 ,ANSI/AWSD1.1-92,JISB1198-82,ISO13918