Product Introduction:

Railway tunnel special drainage board according to its structure form as a convex shell type drainage board, convex shell type drainage board material is used entirely new material high density polyethylene, the code name is HDPE. A cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a Lɔ̈ɔ̈m ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc ye kɔc

Parameters kä:

"Railway Tunnel Drainage Board" TB/T2254-2014 Standard Performance Requirements

Sample form and number of railway tunnel drainage board