RPTFE With secondary metal to metal |
Rt-10% Extended Bonnet as per BS6364(Non Cold Application) |
liuquan1100 发表于 2018-1-25 10:11
问个问题还设置售价?代为取消了~~
lushiru 发表于 2018-1-25 22:55
可能是防火的阀座,这种阀座一般有PTFE和金属密封两道密封设计。RT-10%应该是抽检10%做射线探伤,加长阀盖 ...
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