船用40 50 65純銅消防栓 法蘭式重型消防栓 德標中島式 消防栓
標記示例:How to order 公稱壓力為1.0MPa,公稱通徑為50mm,按GB569法蘭連接尺寸和密封面的船用法蘭直通消火栓: 消火栓 A10050 GB/T2032-93 For marine flanged fire hydrants of PN1.0MPa,DN50mm type A and the flange dimensions in accord with GB569 Fire hydrants A10050 GB/T2032-93 工作壓力為3.0MPa,公稱通徑為50mm,按GB569法蘭連接尺寸和密封面的船用法蘭直通消火栓: 消火栓 A30050 GB/T2032-93 For marine flanged fire hydrants of P3.0MPa,DN50mm type A and the flange dimensions in accord with GB569 Fire hydrants A30050 GB/T2032-9 |
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