Blasting is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure with the help of compressed air to smooth a rough surface, roughen a smooth surface, shape a surface, or remove surface contaminants.
Spray painting is a painting technique where a device sprays a paint through the compressed air on to a surface. Spray guns can be either automated or hand-held and have interchangeable tips to allow for different spray patterns.
Intumescent and Cementitious Fireproof coatings are used to protect a buildings structural steel from failure in the event of fire. The key feature of intumescent is that they expand significantly when exposed to high temperatures, such as those found in a fire. Some intumescent products can expand to more than 100-times the original thickness. As the product expands it becomes much less dense, which makes it act as in insulator that keeps the high temperatures away from structural members or protected openings.
Pickling and Passivation are chemical treatments applied to the surface of stainless steel to remove contaminants and assist the formation of a continuous chromium-oxide, passive film.
Pickling is the removal of any high temperature scale and any adjacent low chromium layer of metal from the surface of stainless steel by chemical means.
Passivation is the treatment of the surface of stainless steels, often with acid solutions (or pastes), to remove contaminants and promote the formation of the passive film on a freshly created surface (e.g. through grinding, machining or mechanical damage).
Refractory lining is a protective layer inside the furnace that acts as a form of insulation to withstand high temperatures. It can also protect the structure from thermal shocks, abrasion and chemical attack. Refractory –Lining consisting of materials with a high melting point, used to line walls of a furnace ,furnace lining .Lining ,liner –a protective covering that protects an inside surface. . Type of Refractory Lining are Sigle layer – wear resistant lining ,One shot lining, Cast lining,Castvibrated lining,Dual layer insulating and wear resistant lining, Ceramic fiber lining and Bricks lining.