GB/T 12459  异径三通 DN 750×750×20-Sch20TRFr ST Sch60-200 bp/4.

DN 20×20×750-Sch20 TRFr ST Sch60-200 bp/4.

WN80-150 RF SC58 δ=100H40-1.

PL150(B)-16 RF D=275 d=21

PL 400(B)-10 RF

DN80-PN63 WN RF A=92 S=40S98m s=5h40

wn150(b)-63m120m00

bl50(b)-100m8.554-110 S=8

WN80(B)-100MF6R60-1.

SO 40-300RFi1M.5/A=0-12