The welding process is used for the purpose of joining metals together, where they are heated, liquefied and linked together, and then the two pieces become connected in strength or stronger than the original metal.
The fire blanket is a cover made of non-combustible cloth, which is used to extinguish the fire according to the fire throttling theory. One of the approved methods of extinguishing is to suffocate the fire by covering it with a fire blanket that prevents oxygen (air) from reaching it, which leads to extinguishing the fire. The blanket is used to extinguish the fires of flammable liquids such as oils, fats, paint, and gasoline, and the fire blanket is one of the easy extinguishing methods that is frequently used in household fires resulting from a gas oven while cooking food.
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The central air conditioning system is a cooling or heating device located in a place and auxiliary devices to transfer the air conditioning energy from this device to the interior of the buildings to serve a number of floors with multiple rooms, these systems are used in many facilities such as: palaces and villas, hotels, commercial complexes, hospitals , Offices, etc.
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