GB/T 12459  弯头 DN 100-Ⅱ-390EL109

DN100-Ⅱ-3 90EL109

PL 40(A)-16RFf25rfs75

PJ/RJ250(B)-16RF.0RF1ffFRF0-40-=20b=5/-/8=

PL100(B)-16RF50-600S/00 TF65&/

DN15/PN16/11B Sch40b)-165FFT21633-19-

WN25-600RF SCH8 B=99M

BL 20-6 RFrf900-1.0RF160 m.00 RF0

wn500(b)-16rf|0stc2/u00a2/G/1.5(a

wn15-