GB/T 12459  等径四通 DN 550-Ⅱ-7CRSF0220FF/u01()0

DN 550-Ⅱ-7 CRSF0220FF/u01()0

pl40(b)-6rfHG20─G2061

20592WN100-25RF8/F9000rf5

PL 1500-10 RF0 RF/wf5-1991RF1cRF0s0 R125500rjs=-00-60h

AXA-4 δ=8

LWN25-150 RF�ÂF RFSM0 R1RF@40@40HFF S=6� Sch80 S

1 RF 650-1.0 δs=40

SO150-150 RF(a)-10 rf

PL400B-