A61Y-320P-DN25,A61Y-320P-DN15,A61Y-160-DN15,A61Y-320-DN20,A61Y-160-DN25,弹簧焊接式高压安全阀


10


调节螺杆


45


2Cr13




11


阀帽


ZG200-400


1Cr18Ni9Ti





密封面材料

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