GB/T 12459  弯头 DN 65-Ⅱ-345ELlh40/-d=1

DN 65-Ⅱ-3 45ELlh40/-d=1

WN50(B)-40 RF f1=3 A=66

so150-600 rf hg/t

3 FF 550-1.0 δ0=6

WN15-1500RJmpampampampampampampquothd=7155b2 -

47023FF450-1.50h8gD=4954RF Sc

WN 350-16 RF d=42812640 C=16m00Rc2

PL65(b)-16RFSch1RF4 RFRFjc10c=-3Sf56 rf-pampfRF

WN3