GB/T 9124.1  法兰 DN50-PN6 PL FF Ⅱ )57FFGM/

DN50-PN6 PL FF Ⅱ)57FFGM/

20615LWN25-300RF

WN 20(B)-16 RF Sch80S

WN25-40G S=4.5am@4RJ RFSCH40S

SO 1 1/2"-150 RF

LWN75-300RF0-60ГҜШҹВҪ hg/@PL100(B)-16 RFRF

SO 500-10 RF

SO 25(B)-40 RF

PL 25(B)-16 RF b=0 D=1 bc2@RF@443

PL50(A)- 25RF-16RFS=0