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产品范围:
>尺寸范围: DN15~600mm
>压力等级: PN10-PN100
>温度范围: -20℃~425℃
>连接方式:法兰、焊接、螺纹
>主体材质:碳钢、不锈钢等
>操作方式:手动、电动、气动
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