盛京棋牌

铸铁方井盖-球墨井盖

铸铁方井盖-球墨井盖

更新:2018-10-17 15:46:03      点击:
铸铁井盖分为 球墨铸铁井盖和灰铸铁井盖,一般来说,同等重量的球墨铸铁井盖要比灰铁井盖抗压能力强。灰铁井盖采用的材料一般为HT200,球墨井盖采用材料一般为QT500-7。
价格:¥ 10
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