HG/T 20592  法兰 SO 25(B)-40 M5 δ=36RFs=4-933(B==300

SO 25(B)-40 M5 δ=36RFs=4-933(B==300

03 FM 400-1.0 S=1220-

DN25-PN320 WN RF I S=5pquothg2061

WN100-150 RF Sch10(a.516R250F0RF S=4

PL400-40RF

LWN 150-600 FF Sch120

PL32(B)-16 RFh800RF�

bl100-150 rf п╟п÷п╒п┴п╟п▒я┌б∙б≤п╟п