HG/T 20592  法兰 SO 450-10 FF2 d=F.6pampampa

SO450(A)-10 FF2 d=F.6pampampa

TH(Rc)50-10 RF

SO 500(B)-16 RFb=4 c=22�FS10R

PL 100(B)-16 RF B= b=

BL 150(B)-25 RF

PL 100(B)-16 RF

SO 250(B)-10 RF��“ BL250-40RFch80j@RFFchf b=1366-1

1 M 500-1.0 δs=4

3 B8

BL 2"-300 LFM00rп� RRF-RF =5�