GB/T 12459  弯头 DN 200-Ⅱ-Sch40S90ESRFF822 schRF700-Sch40

DN 200-Ⅱ-Sch40S 90ESRFF822 schRF700-Sch40

DN65/PN16/02&35A

5 FF 500-4.020δ0=10RF Sc

WN40-150RFRF0-

LWN40-150 RF FMRF50(A)-16RF50-

PL 400(A)-16 RFSo50-16RFM2600-1.6105

WN25(B)-25M2-2009w

WN80(B)-16Gm

pl25(b)-10 rf 5010-ScD00F SCH80Sampamp-1.0/

wn1