152809 ⎘
Rigid pipes of concrete, cement, or asbestos cement, with or without reinforcement
Sub-classes:Modular precast pipe
#2Construction and a method of making a construction
#3METHOD FOR PROVIDING FEATURES TO A PIPE SURFACE
#4Corrosion protection for cast iron pipes and method for producing same
#5Liner for concrete article
#6Method for producing concrete pipes having a plastic inner pipe
#7Method for the production of concrete pipes and concrete pipe system
#8Adjustable concrete pipe form and method
#9Concrete pipe with a corrosion-resistant inner lining
#10Polymer concrete pipe
#11Vault for encapsulating debris from asbestos concrete pipe repair