HG/T 20592  法兰盖 BL 20-6 FFB WN800-300 R

BL20-6 FFB WN800-300 R

WN 600-900 RF S=6

BL2-6RF0S306R

SO 3"-150 RF

LJ 5"-150 LTF5@PFRF-150 FF5RF2@��@40S@�0 RF�500 S@150 FF Sch40 RF5 R6B)1F@2F Sch80)-16 RF�ƒÆ’ŽÃ�

PL 400(B)-10 RF

PL 100(B)-16 RF

PL32(b)-16RF b=3.5