GB/T 12459  弯头 DN 50-Ⅱ-690EL6280FFF-KB=51 C=16

DN 50-Ⅱ-6 90EL6280FFF-KB=51 C=16

Th(NPT)20-40 RF1

DN200-PN25 PL T

wn125B-40FM B=

WN80(B)-10RF

47065.3 B710mpamp0-1.0/60-1.002.5/122

AWN700-900RJ110

PL350(B)-10 RF1/0089-1S==12

WN80-300 fm sch4

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