GB/T 12459  弯头 DN 350-Ⅱ-690EL4F5 RF Sch40Sb

DN 350-Ⅱ-6 90EL4F5 RF Sch40Sb

SO 4"-300 RFF S=20B

WN 80-150 RF Sch120F S=20B

PL 150-16 RFch@RF�J-R9eS-RFWN S25RF Sch4pC- FM500-0.6F RF=350 RF70c3/FMS=

WN 600(B)-150 RF S=15�

WN25-900 FMFFWN S����/data RFJ-R.6F RF=350 RF70c3/FMS=

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