GB/T 12459  弯头 DN 80-290ELRF4300

DN 80-2 90ELRF4300

PJ/RJ 400(B)-16 RF

WN 200-300 RF

DN600-PN10 PL RF Ⅱ

PL 250(B)-10 RF

WN1"-300 RF ASME B16.5

BL 20595-16 RF

PJ/RJ 500(B)-16 RF

SOP FF 10K 20A

WN14"-150 RF Sch10S0RFF6050 RFF Sc5°FS10R@RF1r6-10 rf=7 S=7.6 S/ampSRFHRFF S