日本工业标准_JIS S2146-2009 (追補1)煤气用双头速接橡胶管和聚氯乙烯软管_S 21462009 1 ?QUV w4x|j=OH 14 t?loj;b?H 12 H 1 wFt,nV|jj?o?F?Yb?VqwZUK?|?j*qw?&o|&A?GUYh?wp|?t?lo| JIS S 2146:1991 xY?|U?VQ?h ?F JIS S 2146 2009?z;t| ?z;=? 41 Rubber tubes and polyvinyl chloride hoses with both end convenient joints for gas Amendment 1 JIS S 2146:1991 ?|w?OtYb? 1.&;c?w?2.w?_?|t?.wB
