大口径管材
large diameter pipe
large caliber winding pipe
large caliber pipe
长距离大口径PCCP输水
long-distance and super-large diameter PCCP pipeli
大管径长距离平坦管道
long distance and large diameter flat pipeline
大管径流量测量
large diameter pipe flow measurement
大管径输水管道
big caliber convey water pipes
大口径、长焦距平行光管
large-aperture and long-focus collimator
大口径3PE防腐
big caliber piping 3PE antisepsis
大口径KDP晶体
large-aperture KDP crystal
大口径X70弯管
large-diameter X70 bend pipes
大口径波纹管料
large diameter corrugated pipe feedstock
大口径薄壁管
thin-walled tube with large diameter
large diameter and thin-walled tube
Tube with Large Diameter and Thin Wall