GB/T 12459  弯头 DN 20-Sch16090EL.5 TS-15sg8-

DN 20-Sch160 90EL.5 TS-15sg8-

BL350(B)-100RFrj90.6FRFj6156Sc5 b=33)9

LWN 100-600 RF Sch40 H=101

PL300-10 RF0(B)-16

PL25(B)-6RFH AA=14540S22 RF0(B)-400δ35

WN80-300 RF S=1454f

PL32-10RF0(B)-25FM25 fm16R1=10ac0-FFm/r

WN 1/2"-2500 SFM

PL40(B)-16