GB/T 12459  弯头 DN 25-Ⅱ-490ESampamp60lB)-

DN 25-Ⅱ-4 90ESampamp60lB)-

PL80(B)-16 RF

PL100(B)-16 RF d=1080 n=28 L=30 C=36 f1=3 b=5 B1=1000 K=1

pl100(b)-10 ff d=241 d=285 k=254 b1

3 FM 1200-2.5

PL500B-2.5FF04) gb/@ RFSF8p40rf0-R0sa5 RJ

PL 100-16 RF

BL 80-300 RF s=7

WN40(b)-25gRF0rfRh8040@010(