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电站钢制对焊管件
Steel butt-welding fittings for power plant
价格:¥0.00
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直埋式钢质高温管道保温预制施工验收规范(附条文说明)
Specification of construction and acceptance of heat insulation for buried high temperature steel pipeline
价格:¥0.00
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预应力混凝土用金属螺旋管
Metal spiral sheath for prestressee concrete
价格:¥0.00
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水泥内衬离心球墨铸铁管及管件
Cement mortar inner lining for centrifugal ductile iron pipes and fittings
价格:¥0.00
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