The process of turning sheets of metal into a useful part or component is called sheet metal stamping. The metal is fed into a press, where the stamping tool, also known as a die, creates the desired shape. The die is pressed into or through the metal with tremendous force. The force used in the process is measured in tons.
Except for some specialized processes, sheet metal stamping doesn’t use heat. Instead, it is done with a cold-forming technique. Even though no heat is used, the part can come out hot because of the friction that’s created between the metal and the die from the force of the press.We can't arrange the pipes and wires in a straight line for the whole house which is determined by the geometry.In most cases,it is necessary to turn at the corner and to arrange the wire under or on the wall such as ceiling lamp installed.
However,you need to repair part of the tube sometimes for it is damaged,but you can not replace all of them instead of repair part of a pipe.So the fittings can help you to do this.The key difference between galvanized and hot dip galvanized is that most galvanized materials have a smooth and sharp finishing, whereas hot sip galvanized structures have a rough finishing.
Galvanization is a process of preventing metal surfaces from corrosion. After the completion of galvanization, we say that the surface is “galvanized” if it is done via the usual procedure. However, if we use hot dipped method, we call it a “hot dip galvanized surface”.The power cable is made of three main components, namely, conductor, dielectric, and sheath. The conducting path for the current in the cable is provided by the conductor. The insulation or dielectric withstands the service voltage and isolates the live conductor with other objects. The sheath does not allow the moistures to enter and protects the cables from all external influences like chemical or electrochemical attack and fire.ADSS(All Dielectric Self-Supporting) cable is fully dielectric for use in the aerial plant. As compared to typical cables used in the aerial plant, ADSS cable is designed with its strength member and support member to be inherent to its circular cross-section. It is supported by its own inherent strength. Since it uses all non¬metallic materials, it generally can be used without concern about power coupling eects and bonding and grounding issues. This makes ADSS cable popular on electrical utility rights-of-way suspended from poles or towers. It is constructed with a multi-tube cross-section to support either ribbon or loose optical Fibres. The ADSS cable’s outer jacket can be either a single or a dual jacket with an embedded non-metallic strength member. The installation methods for ADSS cables are essentially the same as those used for other aerial optical cables, except ADSS cables are not lashed or supported o a messenger strand. Special care must be taken during installation not to exceed the cable’s maximum pulling tension, its minimum bending radius, and other mechanical strength limitations. It is necessary to avoid any jacket damage which can expose strength members within the jacket and reduce the long-term cable performance. The IEEE Guide to the Installation of Overhead Transmission Line Conductors will provide additional relevant information about ADSS installation practices.