GB/T 12459  弯头 DN 250-Ⅱ-1445ELrf �

DN 250-Ⅱ-14 45ELrf �

PL 400(B)-10 RF

LWN50-150RF H=619

PL 65(B)-10 RF B=74

SO250(B)-16 RF

WN 50()-40 RF S4

PL 32(B)-10 M

WN80(B)-16 RF526

WN4"-150T Sch8h80s55h30

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