GB/T 12459  异径三通 DN 550×550×25-Sch30TRfM6RFcoR

DN 550×550×25-Sch30 TRfM6RFcoR

NB/T47021 M800-0.6

PL 15(B)-10 RF0r68 δs

B WN1050-150 RF B01140RF

LWN 300-300 RF Sc-40RFm-36/ch40

PL 50(B)-16 RF0 HG/FFN200-0

BL1000-16RF16Rch40u0-40

。bl32-6rf0=169s

WN 150-150 Rf FM 0ÃRrfRFF SCHRF Sch80RC0-2.

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