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2. A unit project with a large construction scale can be used as a sub-unit project with its independent construction conditions or parts that can form independent functions.
3. When the division project is large or complex and has a long construction period, it can be divided into several sub-division projects according to the type of materials, construction characteristics, construction procedures, professional systems and categories.
4. The sub-projects shall be divided according to the main construction procedures, types of work, materials, construction techniques, equipment categories, etc., and may consist of one or several inspection lots.
5. The inspection lot can be divided according to the construction section according to the construction, quality control and professional acceptance. Inspection lots should not be divided too much.
(II) Procedures for inspection and acceptance Quality inspection shall be carried out step by step. The inspection lot is the smallest unit of quality acceptance. The acceptance of the sub-project is carried out on the basis of the inspection lot; the acceptance of the sub-project is carried out on the basis of the acceptance of the sub-projects included; the acceptance of the unit project is in each of its branches. On the basis of project acceptance, some unit project acceptance is the final acceptance before the technician uses it (completed acceptance).
The inspection quality of the unit project and the quality assurance data of the unit project shall be checked and assessed by the construction (or supervision) unit for construction, design, supervision and construction. Only after the acceptance of all unit engineering quality is qualified, can the individual project completion acceptance and quality certification be carried out.
1. The construction team shall handle each operation of the operation, each operation cycle as a checkpoint, and check the measurement points; the construction unit of the mine roadway engineering shall conduct a self-test for the quality of the sub-projects of each cycle. These self-inspection work should be completed with construction self-inspection records.
2. The inspection lot or sub-project (referring to the acceptance of the roadway engineering) shall be subject to the self-inspection of the construction team, and the supervision engineer (the technical person in charge of the construction unit) shall organize the project quality (technical) person in charge of the construction unit to conduct the inspection and acceptance. The supervision engineer (the technical person in charge of the construction unit) approved.
3. The divisional engineering shall be supervised by the chief engineer (the person in charge of the construction unit project) and the person in charge of the construction unit and the person in charge of the technology and quality, and shall be approved by the person in charge of the construction unit. For the division project with foundation, foundation and main structure, the project leader of the survey and design unit shall also participate in the relevant division engineering inspection.
4. After the completion of the unit project, the construction unit shall organize relevant personnel to conduct self-inspection. According to the needs, the self-inspection can be divided into three levels: self-inspection at the grassroots level, self-inspection at the project, and pre-inspection at the company (or sub-sector). The unit submits the project completion report. After receiving the completion report, the construction unit shall organize the construction (including subcontracting units), design, supervision and other units (projects) responsible persons to conduct the inspection and acceptance.
5. After the completion and acceptance of the unit project, the construction unit shall report to the relevant department for the record within the specified time, and shall apply to the quality supervision department or the project quality supervision agency for quality certification, and the quality supervision department or the project quality supervision organization shall organize the project quality certification. The roadway engineering shall not be subject to the completion of the project, and shall not be used for the completion of the project and the use of technicians.
6. Construction quality acceptance requirements (1) Construction construction quality should meet the requirements of relevant professional acceptance specifications; construction should meet the requirements of engineering survey and design documents. All parties involved in the acceptance of construction quality shall have the required qualifications.
(2) The acceptance of the project quality shall be carried out on the basis of the self-inspection and assessment of the construction unit.
(3) The quality of the inspection lot (or the sub-project of the roadway engineering) shall be checked and accepted according to the main control project and the general project.
(4) Before concealing, the concealed project shall be notified by the construction unit to the relevant unit for acceptance. The quality inspection and assessment of the concealed project shall be based on the quality inspection records signed by both the construction unit (including the supervision) and the construction unit.
(5) Test blocks, test pieces and related materials involving structural safety shall be witnessed and sampled and tested in accordance with relevant regulations. Sampling inspections should be carried out for important divisional projects involving structural safety and use functions. Units that undertake witness sampling tests and related structural safety tests shall have corresponding qualifications. The quality of the project's perception should be checked by the inspection personnel on site and should be confirmed together.
(6) When the project has subcontracted unit construction, the general contractor shall participate in the inspection of the contracted project by the subcontracting unit; when the inspection is qualified, the subcontracting unit shall transfer the relevant materials to the general contractor unit, and the responsible person of the general contractor unit shall participate in the whole project. Acceptance work.
(7) When the unit project is completed and accepted for quality assessment, the quality inspection results of the random inspections are inconsistent with the results of the divisional engineering inspection. The reasons should be analyzed to determine the final quality level of the project.
(8) When the strength of the concrete test piece is assessed as unqualified, the test method of non-destruction or partial damage according to the regulations may be adopted, and the calculation shall be carried out according to the relevant national standards, and shall be used as the basis for treatment.
Sheet Metal Fabrication Service
Sheet metal processing of sheet metal fabrication service is an important process for forming sheet metal products. Sheet metal processing includes traditional cutting, punching, bending, and forming methods and process parameters, as well as various cold stamping die structures and process parameters, various equipment working principles and operating methods, and new stamping technology and new technology. Part metal sheet processing is called sheet metal processing. The materials generally used in sheet metal processing are cold-rolled sheet (SPCC), hot-rolled sheet (SHCC), galvanized sheet (SECC, SGCC), copper (CU) brass, red copper, beryllium copper, aluminum sheet (6061, 5052, 1010, 1060, 6063, duralumin, etc.), stainless steel (mirror surface, brushed surface, matte surface), depending on the function of the product, the selection of materials is different, generally, it is necessary to consider the use and cost of the product.
Sheet metal processing has the following characteristics:
The beam is easy to control: it is easy to combine with precision machinery, precision measurement technology, electronic computer, etc. to achieve high precision and high automation.
High power density: When the workpiece absorbs the rapidly rising temperature during the sheet metal process, even materials with high melting points, high hardness, and high brittleness (such as ceramics, diamonds, etc.), will melt or evaporate.
Wide range of applications: the divergence angle of the sheet metal machining beam can be less than 1 milliarc, the diameter of the spot can be as small as microns, and the action time can be as short as nanoseconds and picoseconds. At the same time, the continuous output power of high-power plate processing can reach kilowatts to ten kilowatts.
Convenient and flexible: Robots can process sheet metal in harsh environments or places that are inaccessible to others.
If you need the custom metal fabrication service like sheet metal forming process to custom sheet metal parts, such as stand sheet metal parts, etc., please get in touch with us.
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