GB/T 12459  弯头 DN 20-Sch40S180EL25

DN 20-Sch40S 180EL25

WN600-900 RJ SRF0RF SCH405(b@F0 r66=1216 RF

pl125b-16rf b=4 SF0

pl 100(a)-25rfun11.15�

SO100(B)-16 t

WN80(B)-16 RFB)6rfFHG

pl40(b)-10 rf B000R.f50F100000=1

WN25(a)-160rjSchæ—ch40sRF2059-/43-4Sch40SCH80RF/h=40S

wn50-2.5rf16