HG/T 20592  法兰盖 BL 400-25 FFpl25((

BL400-25FFpl25((

bl100b-63rfRF0 rFch8@0

SO250(b)-16RF/7504200/516-00.6r--150-6

WN 1/2"-300 RF S=2.9ampa

WN20-150RFS=3.50s b=3 A

pl25(a)-10rf c=16)-mpampampamp;amp;amp;amp;ampampTFc4)-

PL4000-6RFF s55b0If/dذ¨آ·ذ’ذˆ

B SO150(B)-16 RF

bl2