GB/T 12459  弯头 DN 400-Sch4090EL/1 Sch10sc

DN400-Sch40 90EL/1 Sch10sc

WN 80-150 RF S=1420615Fch425sch805Ã-4.0å&

PL 150(A)-10 RF52

pl80(b)-40 t/

LWN 32-300 T Sch80S

PL 25(B)-16 RF RF0S5) S=δ0=1G0R6

Wn600(B)-150RFch8 b=5FS-

WN300-150RF560/�00-15

PL 300-10RF=8-40rfb/paf000000GRFδ=6 S

BL125