GB/T 12459  弯头 DN 15-390EL6 RF0 RF-16.15N50(B)-40R

DN 15-3 90EL6 RF0 RF-16.15N50(B)-40R

BL 150-6 RF/F0h0np0m2 S=4.5RFRF

PL100- 25RFM5t2L-data/s34B5RJ R1cBh Sc RJFch

SO150(B)-25RF0e0δ0=8ds=5T=175R0EL0 RF

PJ/SE 500(B)-10 FF S=10

WN50-600 G Sch80S

WN450-150 RF15F Ⅱ0/F8h0150 RF-

法兰盖 BL500-6 RF

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