J4带管夹T型管托标准号生产 ¥9.75 Z1型管夹固定支座Z1.219H介绍 ¥18.00 J2管夹型T型管托DN600蒸汽 ¥7.50 J1-1aT型管托焊接型经营 ¥18.00 J4T型加筋焊接型管托生产售 ¥7.50 T型管托J2管夹型支撑式电厂用 ¥24.00