GB/T 12459  偏心异径管 DN 1050×15-Sch40SRE REF S=6

DN 1050×15-Sch40S RE REF S=6

SO50-300 G.2FFF Sch40SSRF

WN 40-150 RF135h0.5/40f S=

WN32(b)-160FM S=4/M 4

so400(b)-16ff4am1.L5m832 S=1

BI 3253.5Sc��5=60

WN250-1500RJS1500-1(B0/-15

PL 250(B)-10 RF=5RF SchjFM1

WN 100-300 RF Schq

WN100-10 MFM S= b=