The threading pipe is divided into two types: IMC and EMT, both of which are processed by hot-dip galvanized. The EMT conduit is a metal thin-walled conduit. The thickness of the IMC is relatively thick, which is suitable for harsher environments.
Shell-mold casting process is also known as Resin-coated sand casting process which is an expendable casting process that uses a resin covered sand to form the mold.