HG/T 20592  法兰盖 BL 500(B)-25 FM S=12.

BL500(B)-25 FM S=12.

DN 50-Ⅱ-10 LJSRF-SCH0

WN50-150RF A/40 A10 RJ000F0-150

WN500(A)-16 RF S=≥12

WN 2"-150 SFM C=20 D5/4550RF SC0

2 T 1200-0.620δ1=1

WN500(A)-25 RF S=≥10

A WN 950-150 RF Sch0-)--63 MMRFf000g910H1.6�

PL 50(B)-16 RF b=3FIæ