GB/T 12459  弯头 DN 50-Ⅱ-1090ES

DN 50-Ⅱ-10 90ES

WN 80-150 RFF Srï؟½1.

BL400-600T5 RF=3

PL100(B)-16 RFch4(18

LWN25-300 RF Sch40S

DN 40-Sch80S LJL

SO 50-16RF150(b)-16rfPFRF-150 FF5RF2@��@40S@�0 RF�500 S@150 FF Sch40 RF5 R6B)1F@2

20623 B WN650-300 RF.6

pl32-25g/M1/80-B=

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