弯头 DN 450-Sch4090EL/52 rfs=10/.0/data/company/2408.26 D=3

DN450-Sch40 90EL/52 rfs=10/.0/data/company/2408.26 D=3

NB/T47021 C-RF1000-0.6FHG/

BL80-16 RF S31603 2P6 RF S

PL400(B)-10 RF d=430 BB=327

47021 M600-0.6 δ=4

WN32(A)-16T0 s

LWN25-300 RF sch160/

WN15-900 RJ Sch80S0/

SW 25-16 RF=3.5-1 †115 tar