内容标题39

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                美标锻钢闸阀

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                技术规范ASME/API

                设计标准API 602

                压力温应等级ASMEB 16.34

                法兰型式【尺寸ASMEB 16.11

                对焊连接ASME B 1.20.1

                检验与→试验AP1598

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                栓嗤接阀兰或焊接阔盖

                上螺纹或下¤螺纹阀杆

                全径或缩径和戰武神尊一樣

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