47615 ⎘
Methods or machines specially adapted for the production of tubular articles Moulds
Sub-classes:PRECAST CONCRETE PIPE COUPLING AND SYSTEM AND METHOD FOR MANUFACTURING THE SAME
#2Devices and processes for making concrete articles
#3Production method for a tubular fuel cell having a two-layer cap region of the support body
#4Lightweight aggregate-based non-steam-cured high-performance pipe culvert and preparation method thereof