Anti-material replacement In material selection, it is necessary to indicate the names, brands, specifications, quality levels, unit prices, quantities, procurement locations, production dates, and shelf life of nine items in order to prevent the replacement of materials through the so-called “pillar replacement†during construction. Especially for projects such as Daxinban, paints, latex paints, floor tiles, wall tiles, kitchens, and other decoration companies, pay more attention to the projects and ask for quality inspection reports. Once problems arise, written proofs can avoid losses caused by material replacement. . Anti-detail price increase In the audit quotations, it is necessary to pay attention to items such as brush coating and ceramic tile that have a large amount of work. If the unit price increases by a few dollars, the entire construction cost will increase a lot. For example, in a 60-square-meter paving project, if the price is increased by 5 yuan per square meter, the entire cost will increase by 300 yuan. For another example, a three-bedroom, two-room apartment type brushing will generally require more than 300 square meters per square meter. If you increase 2 yuan, the cost will increase by 600 yuan. Anti-midpoint addition Some refurbishment companies have lower quotations at the initial stage, but increasing the number of projects during construction will make the overall cost still higher. For example, deliberately select low-grade products during quotation, and require replacement during construction; when quoting, the length of hydropower pipeline is deliberately calculated, and the demand is increased later. In this regard, the owner can write "additional settlement items and budget items within 5%." Anti-process ambiguity Craft is one of the important reasons that affect the decoration cost. The ambiguity in craftsmanship will lead to great differences in the cost. For example, when dealing with a wall surface, at the junction of the bearing wall and the gypsum board inner wall, if no caulking is performed, cracks will occur; when the door pockets are opened, double-layer large core boards are used, but many decoration companies are in the quotation. None are reflected. Experts believe that whether the decoration company omits the project or promises the project but does not honor it, it will cause trouble and loss to the owner. Anti-overpressure Do not excessively lower the price, which will cause the construction team to have a "reverse psychology," greatly reducing the decoration materials and quality. For example, the use of non-environmentally friendly large core boards, although the price has dropped, the environmental protection index will also decline, of course, not to be tempted by the construction team's too low offer. Entrance decoration children's room decoration paint paint latex paint door price apartment decoration decoration decoration company look good tile price tile adhesive tile specifications
Non-tapping screws are machine Screw, the pieceworker to be fastened must be tapped with taps in the screw hole in advance to match the screw threads.
The difference between tooth screws and other screws depends on whether they can be used together with nuts. Tooth screws can be used with nuts. And relative to the screws of other teeth, there are self-tapping screws. The nut of this kind of screw has no bow teeth. As for the standard teeth and fine teeth are only different pitch, it is the nut of the machine screw
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