潜水电机壳体,包括机架,尾轴承架,法兰和罩盖总装,必须采用符合美国材料试验协会ASTM A - 48类别30标准的、密实的铸铁或更好的材料制造。
The submersible motor enclosure including frame, end brackets, flanges and cap assembly shall be constructed of close-grained cast iron, ASTM A-48, Class 30 or better.
材料必须符合已有的国标或行业的产品标准规定,以国家认可的检测机构出具的检测报告为准。
Materials must conform to the existing national standards or industry product standards, to nationally recognized testing agencies issued test report shall prevail.
材料必须符合已有的国标或行业的产品标准规定,以国家认可的检测机构出具的检测报告为准。
Materials must conform to the existing national standards or industry product standards, to nationally recognized testing agencies issued test report shall prevail.
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