롤러 베어링의 롤링 요소를 제공하는 단단하거나 속이 빈 원통형 본체입니다.
astm b148, grade d, c95500 assn std single material response separator slug material document and classification, 4.2500 inches nominal groove radius, 2.5000 inches nominal overall length, ssn 688 class submarine, no.1 & no.2 pe riscopes cathodic protection system end item identification, copper alloy 955 separator slug material