For some permanent project, especially for some underground projects, duplex coating systems are necessary. Just as its name implies, duplex coating system adopts two anti-corrosion measurements, they are hot-dip galvanizing and epoxy coating.
PVC Compact ball valves is on/off valve, the design is very simple but effective. The size can be offered from ½ through 4 diameter. Connection styles are either socket or threaded.
Aluminum PP-R composite pipe is a new type of high performance water delivery pipe produced. The pipe consists of PP-R inner layer, adhesive layer, aluminum layer and PP-R outer layer.
O-rings are one of the most common seals used in machine design because they are inexpensive, easy to make, reliable and have simple mounting requirements