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UDC621.643.4j15中华人民共和国国家标准GB3748.1-83卡套式隔壁直通管接头Bulkheadunion-Assembly1983-06-17发布1984-04-01实施:标国家批准中华人民共和国国家标准UDC621.643.4卡套式隔壁直通管接头GB3748.1-83Bulkheadunion-Assembly本标准规定了卡套式隔壁直通管接头,适用于油、气及一般腐蚀性介质的管路系统:GB3748.2-83GB3759-03/GB:CB3704-83标记示例:公称压力J级,管外径D为14mm的卡套式隔壁直通管接头:管按头14GB3748.1-83国家标准局1983-06-17发布1984-04-01实施
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