NB/T 47022  法兰 C-M 3000-0.25/20δ1=12 Schd=Sch4RF50 RF B=1

2 CM 3000-0.2520δ1=12 Schd=Sch4RF50 RF B=1

WN32(B)-63 M S=5

SP-6-20-1604031ch705FJ/u00cu91000-1.

WN50-300 RF B=5225RFi 2

BL100-150RF2cr

SO 300-150 RF c==02B)Fhpampa=12

WN 450(B)-16 RF S=10fFFF S=6F 15

SO200-300M)-10rf25rf FF7¼5680

bl600(B)-25 RF-