Fireproof windows are windows made of steel window frames, steel sashes, and fire-resistant glass that can isolate and prevent the spread of fire. There are stricter regulations on technology.
First, materials and accessories
(1) The sash frame is made of a steel frame or a wooden frame having a certain strength sufficient to ensure the integrity and stability of the member.
(2) Steel frame and bead can be galvanized steel or stainless steel. The material selection criteria are in accordance with the provisions of Article 5.1 of GB12955 “General Technical Conditions for Steel Fire Doorsâ€.
(3) The material selection criteria for wood frame and beading shall comply with the provisions of 5.1.1 of GB14101 “General technical conditions for wooden fire doors†[1].
(4) Filling materials inside steel and wood frames shall be made of non-combustible materials.
(5) Fireproof glass can be selected without affecting the fire resistance of the fireproof window. The glass transmittance is not less than 75% of the same number of ordinary flat glass.
(6) The sealing material between the frame and the fireproof glass should be made of flame retardant materials, which can play the role of fireproof and smokeproof in case of fire.
(7) The hardware accessories shall be the qualified supporting products that have passed the test.
Second, the installation requirements:
1. When accepting the goods, Party A should carefully check the quantity, specifications, grades and various accessories according to the supply contract to be qualified and complete.
2, storage and storage of fire windows should be stored vertically in a dry room, and should have anti-corrosion measures, the glass should be placed and rely on objects that can not damage the glass edge and glass surface.
3, installation
(1) The fire window must be inspected before installation. If the window frame, window sash is warped, deformed or damaged due to inadvertent transportation and storage, it should be repaired before installation.
(2) When the fire window is installed, it should be leveled with a horizontal ruler or the vertical line of the front, back, left and right by the hanging line method, so as to be horizontal, vertical and high.
(3) The window frame must be integrated with the building and connected to the wall by wood or iron. After the steel window frame is installed, the cement mortar must be poured between the rear window frame and the wall, and it can be used normally for 24 hours.
(4) The position of the mounting holes of the hardware fittings should be accurate, so that the hardware fittings can be installed flat and firm, and meet the requirements for use.
(5) When the fireproof glass is installed, the four sides must be evenly spaced. After positioning, fill the four side gaps with fireproof cotton, and then seal the edge strips.
(6) In addition to the above requirements, the installation shall be carried out in accordance with the requirements of the “Construction and Acceptance Specificationsâ€.
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Label: Fire window technical requirements
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Ferro Molybdenum
Ferro Molybdenum composed of molybdenum and iron, generally containing 50 to 60% of molybdenum, are used as alloying additives for steelmaking. Ferro molybdenum is an alloy of molybdenum and iron. Its main use is as a molybdenum addition agent in steelmaking. The addition of molybdenum to the steel allows the steel to have a uniform fine-grained structure and increase the hardenability of the steel, which is beneficial to the elimination of temper brittleness. In high-speed steel, molybdenum can replace a portion of tungsten. Molybdenum is used in combination with other alloying elements to produce stainless steels, heat-resistant steels, acid-resistant steels and tool steels, as well as alloys with special physical properties. Molybdenum added to cast iron can increase its strength and wear resistance.
Ferro Molybdenum
Ferro Molybdenum,Pure Ferro Molybdenum,Raw Materials Ferro Molybdenum
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