The Code for Construction of Residential Decoration Projects is numbered GB50327-2001 and will be implemented as of May 1, 2002.
Among them, Chapter 6 is the regulation of waterproof engineering.
1. General regulations
(1) This chapter applies to the waterproof construction of toilets, kitchens and balconies.
(2) Waterproof construction should be waterproof with coating film.
(3) Waterproof construction personnel should have corresponding post certificates.
(4) The waterproof project shall be carried out after the ground and wall concealed works are completed and checked and accepted. The construction method shall comply with the relevant national standards and relevant regulations.
(5) Safety lighting should be provided during construction and ventilation should be maintained.
(6) The temperature of the construction environment should meet the technical requirements of waterproof materials and should be above 5 °C.
(7) Waterproofing works should be done twice.
2, the main material quality requirements
The performance of waterproof coatings shall comply with the relevant national standards and shall have a product qualification certificate.
3. Construction points
(2) The surface of the base layer shall be flat, and there shall be no defects such as looseness, hollowing, sanding, cracking, etc. The moisture content shall comply with the construction requirements of the waterproof material.
(3), floor drain, casing, sanitary ware root, yin and yang angle, etc., should be made of waterproof additional layer.
(4), the waterproof layer should extend from the ground to the wall, 100mm above the ground; the waterproof layer of the bathroom wall should not be less than 1800mm.
(5) The construction of waterproof mortar should meet the following requirements:
4. The mixing ratio of waterproof mortar should meet the requirements of design or product. The waterproof layer should be firmly combined with the base layer. The surface should be flat. There should be no empty drums, cracks and pitting, and the yin and yang angle should be rounded.
5. The thickness and strength of the protective layer cement mortar should meet the design requirements.
6, waterproof products related to national building materials industry standards:
"Polymer cement waterproof mortar" JC/T 984-2005 is divided into class I single component, class II dual component
"polymer cement waterproof coating" JC/T 894-2001 is divided into type I polymer, mainly type II cement
Self drilling Screw made of 410 stainless steel, high hardness (40 Rockwell C), steel process.
Drilling screw is also very strong hardness, compared to the ordinary screw up, not only to maintain the ability is good, the connection object effect is also very strong, for the performance of the screw, are generally does not need auxiliary processing, can be directly on the object directly drill a Kong Sue into objects, not just use rise very convenient, Also can greatly improve the efficiency of work. This kind of drilling screw can be said to be the first choice of workers in various fields.
So what is the use of drilling screws?
1 stainless steel plate, metal plate, galvanized steel plate, engineering installation.
2 metal curtain wall metal light compartment and other indoor and outdoor installation.
General Angle steel, channel steel, iron plate and other metal materials combined installation.
4, automobile, container, shipbuilding, refrigeration equipment and other assembly projects.
Self drilling screw,hex Self drilling screw,truss Self drilling screw,flat Self drilling screw,pan Self drilling screw
Shenzhen Lanejoy Technology Co.,LTD , https://www.ccls-vaccine.com