The ductile cast iron pipe uses cast iron of No. 18 or more after adding a nodulizer, and passes through a centrifugal high-speed centrifugal cast pipe of a ductile cast iron machine, which is called "durley cast iron pipe", and is simply referred to as a ball pipe, a ductile iron pipe, and a ductile cast pipe. Wait. Ductile iron pipe fittings have the essence of iron, steel performance, excellent anti-corrosion performance, good ductility, good sealing effect, easy installation, and are the first choice for water supply pipes, and have a high cost performance. Compared with PE pipe, from the installation time, the spheroidal pipe is easier and faster to install than the PE pipe, and the inner and outer bearing pressures are better after the installation; from the perspective of hermeticity and corrosion resistance, the sealing property of the spheroidized pipe is better after the installation. Corrosion resistance can be improved by a variety of anti-corrosion measures; from the hydraulic performance point of view, because the specification of the spheroid tube generally refers to the inner diameter, the specification of the PE pipe generally refers to the outer diameter, because under the conditions of the same specification, the spheroidized tube can achieve greater runoff; In terms of comprehensive installation and maintenance cost, the ball-and-tube tube has a superior cost performance.
The knowledge source of the ductile iron pipe
Waterborne Polyurethane Product
Waterborne polyurethane product consists of polyurethane hardener and curing agent, and it can be used for waterborne two component polyurethane coating system.
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