GB/T 12459  同心异径管 DN 750×15-Sch40SRC

DN 750×15-Sch40S RC

BL200(B)-10FM4020rwn100

47023 C FM1100-1.60l450(b)35fl501/40/FM

WN 500-1500 RF S=6

PL 65(B)-16 FF D= B= K= L= n=

WN40-16 FM 300-025 R50-1.6/sch16011Sr5

BL 40-40 RFF R16R/06RF9fm5-15058-179.0(B

2 A5m√ RF Sch4M C=2659F-0K/

PL200(