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Anonymous users2024-02-16The installation unit must meet the following basic conditions: ; 1. Have the status of a legal person and hold an industrial and commercial business license; ;2. Have a quality system that meets the needs of pressure pipeline installation; ;3. The installation performance and installation capacity of pressure pipelines within the scope of application; ;4. The installation quality is qualified and the safety performance is reliable through the engineering project. For more information, please contact Nanjing Haixuan Enterprise Management Consulting****, products and services:
Pressure pipeline qualification management consulting Haixuan Enterprise Management Consulting (HXC) has always adhered to the concept of "professionalism, efficiency and win-win", and has provided high-quality and professional certification consulting services for many customers with a scientific, fair, standardized and rigorous working attitude, which has won good praise and has been widely praisedThank you!
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Anonymous users2024-02-15Legal Analysis: Specification for Pressure Test of Water Supply and Drainage Pipes: Code for Acceptance of Construction Quality of Building Water Supply and Drainage and Heating Engineering GB 50242-2002 The hydraulic test of indoor water supply pipes must meet the design requirements.
When the design is not specified, the test pressure of various materials for the piping system is times the working pressure.
Legal basis: "Work Safety Law of the People's Republic of China" Article 4 Production and business operation entities must comply with this Law and other laws and regulations related to production safety, strengthen production safety management, establish and improve the safety production responsibility system and safety production rules and regulations for all employees, increase the investment in safety production funds, materials, technology and personnel, improve safety production conditions, strengthen the standardization and informatization of safety production, and build a dual prevention mechanism of safety risk grading control and hidden danger investigation and management. Improve the risk prevention and resolution mechanism, improve the level of safe production, and ensure safe production.
Production and business operation units in emerging industries and fields such as the platform economy shall, on the basis of the characteristics of their respective industries and fields, establish, improve and implement a responsibility system for production safety for all employees, strengthen education and training on production safety for employees, and perform the relevant production safety obligations provided for in this Law and other laws and regulations.
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Anonymous users2024-02-14Summary. The thickness of the pressure drainage pipe is used according to the requirements of the specification: 1. The national thickness standards for PVC pressure drainage pipes with different nominal inner diameters are different.
Generally, the minimum wall thickness of the drainage pipe with an inner diameter of 50 is, and the maximum wall thickness is. The minimum wall thickness of the drainage pipe with a nominal inner diameter of 75 is, and the maximum wall thickness is. The minimum wall thickness of the drainage pipe with a nominal inner diameter of 90 is, and the maximum wall thickness is the minimum wall thickness of the drainage pipe with a nominal inner diameter of 110, and the maximum wall thickness is.
The minimum wall thickness of the drainage pipe with a nominal inner diameter of 125 is, and the maximum wall thickness is. The minimum wall thickness of the drainage pipe with a nominal inner diameter of 160 is, and the maximum wall thickness is the minimum wall thickness of the drainage pipe with a nominal inner diameter of 200, and the maximum wall thickness is. The minimum wall thickness of the drainage pipe with a nominal inner diameter of 250 is, and the maximum wall thickness is.
The minimum wall thickness of the drainage pipe with a nominal inner diameter of 315 is, and the maximum wall thickness is.
The thickness of the pressure drainage pipe is used according to the requirements of the specification: 1. The national thickness standards of PVC pressure discharge orange spine water pipes with different nominal inner diameters are different. Generally, the minimum wall thickness of the drainage pipe with an inner diameter of 50 is, and the maximum wall thickness is.
The minimum wall thickness of the drainage pipe with a nominal inner diameter of 75 is, and the maximum wall thickness is. The minimum wall thickness of the drainage pipe with a nominal inner diameter of 90 is, and the maximum wall thickness is the minimum wall thickness of the drainage pipe with a nominal inner diameter of 110, and the maximum wall thickness is. The minimum wall thickness of the drainage pipe with a nominal inner diameter of 125 is, and the maximum wall thickness is.
The minimum wall thickness of the drainage pipe with a nominal inner diameter of 160 is, and the maximum wall thickness is the maximum wall thickness of the drainage pipe with a nominal inner diameter of 200. The minimum wall thickness of the drainage pipe with a nominal inner diameter of 250 is, and the maximum wall thickness is. The minimum wall thickness of the drainage pipe with a nominal inner diameter of 315 is, and the maximum wall thickness is.
DN50 GB wall thickness? DN80 GB wall thickness? DN100 national standard wall thickness? DN150 GB wall thickness?
We use hot-dip galvanized pipes.
The nominal outer diameter of DN50 is the wall thickness of the standard type of steel pipe and the wall thickness of the thickened steel pipe.
Wall thickness of the steel pipe, outer diameter.
The outer diameter and wall thickness of 4mmDN100 seamless steel pipe are 108mm and the wall thickness is 4mm according to the national standard.
Galvanized steel pipe, the national standard wall thickness is, the outer diameter is 165, and the weight is.
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Anonymous users2024-02-13"Code for Construction and Acceptance of Water Supply and Drainage Pipeline Engineering" is a national standard, numbered GB50268-2008. Effective May 1, 2009.
GB 50268-2008 Code for Construction and Acceptance of Water Supply and Drainage Pipeline Engineering According to the requirements of the Ministry of Construction's Notice on Printing and Distributing the National Standard Formulation and Revision Plan for Engineering Construction in Two and Four Years (Jianbiao [2004] No. 67), Beijing Municipal Construction Group Co., Ltd. and relevant units revised the Code for Construction and Acceptance of Water Supply and Drainage Pipeline Engineering GB 50268-97.
In the process of revision, the compilation team carried out in-depth investigation and research and special seminars, summarized the practical experience of water supply and drainage pipeline engineering construction and quality acceptance in various parts of China, adhered to the guiding principle of "inspection and separation, strengthening failure and acceptance, improving means and process control", referred to the relevant domestic and foreign regulations, and widely solicited the opinions of relevant units in various forms, and finally reviewed and finalized.
GB 50268-2008 Code for Construction and Acceptance of Water Supply and Drainage Pipeline Engineering The main contents of the provisions are: general provisions, terminology, basic provisions, earthwork and foundation treatment, slotted construction pipeline main structure, non-slotted construction pipeline main structure, immersed pipe and bridge pipe construction main structure, pipeline ancillary structures, pipeline functional test and attached inspection records.
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Anonymous users2024-02-12Water supply and drain water pipes, gas pipes and even electrical circuits are all things that people must use in their daily lives, and whether they are qualified or not is related to people's health and property safety, and even affects people's lives. What criteria can be referred to when conducting pipeline acceptance? Let's take a look at Tuba Rabbit.
Pipeline Acceptance Criteria: Pipeline Acceptance Specifications.
Water supply and drainage pipes. 1. The quality of water supply and drainage pipes and pipe fittings must meet the requirements of the standard, and the drainage pipe should be made of hard-mounted PVC drainage pipes and fittings.
2. It is necessary to check whether the original pipeline is unblocked before the work, and then carry out the construction, and then check whether the pipeline is unblocked after the construction. Concealed water supply pipelines should be subject to water acceptance, and the water supply pipelines installed by the newly dismantled potatoes should be tested according to the provisions of early suffocation. There must be no leakage, and acceptance can be carried out before moving on to the next process.
Pipeline Acceptance Criteria: Pipeline Acceptance Specifications.
Gas pipelines. 1. Pressure test: The pressure test is to use an air compressor to fill the compressed air into the gas pipeline, and check the tightness of the pipeline interface and material through the air pressure. Test. According to the purpose of acceptance, it is divided into strength test and air tightness test.
2. Strength test: The strength test is to check the tightness of the pipeline interface (including the pipeline) with a higher air pressure. The test pressure depends on the pipeline, the gas pressure system, and the pipeline, material.
Under normal circumstances, the test pressure is times the design gas transmission pressure, but the steel pipe shall not be lower, the plastic pipe shall not be lower, and the cast iron pipe shall not be less than exceeded.
3. Air tightness test: The air tightness test is to use air pressure to test the compactness of pipelines and interfaces under gas transmission conditions. Therefore, a gas tightness test is required after the gas pipeline is fully installed.
If it is buried, it must be backfilled at the top of the pipe for it to proceed. The pressure of the air tightness test is usually a multiple of the design pressure.
We have read about the introduction of specific standards for water supply and sewerage, as well as for the acceptance of gas pipelines. You can refer to it during acceptance to prevent omissions. The above is a description of the specific criteria for the acceptance of the two pipelines.
You can get it for free
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Anonymous users2024-02-11The acceptance specifications of municipal engineering are: approved by the quality supervision machine Yu Yugou as qualified or excellent, in line with the specified construction engineering quality standards;It has the necessary approach test report, complete engineering technical and economic data and signed engineering warranty;Sign the project warranty certificate, with complete engineering technical files and as-built drawings.
Article 16 of the Regulations on the Quality Management of Construction Projects After receiving the completion report of the construction project, the construction unit shall organize the design, construction, engineering supervision and other relevant units to carry out the completion acceptance. The completion and acceptance of the construction project shall meet the following conditions, seepage refers to: (1) the completion of the construction project design and the contents of the contract;(B) have a complete technical file and construction management information;(3) There is an approach test report of the main building materials, building accessories and equipment used in the project;(D) there are survey, design, construction, engineering supervision and other units signed by the quality of the documents;(5) There is a project warranty signed by the construction unit.
If the construction project experience is qualified, it can be delivered.
After the home decoration is completed, there are often some materials that are not used, throw away and feel a little wasteful, after all, it is also purchased with the decoration budget, we are human witty, good at thinking, often have some good thinking, make ideas works, today we want to ** is to use a pvc pipe to make dozens of good-looking furniture, maybe you will say useless, to show you another form of coffee table made in this way: >>>More
1. Wrap the insulation pipe:
Before the renovation, the drainage pipe is covered with insulation pipes (there are various specifications on the market, thick foam pipes), and then the hanging shed and decorative pipes. >>>More
High material strength: The flexible cast iron drainage pipe has good mechanical properties, and its tensile strength is greater than 150MPa according to the standard, while the tensile strength of the superior product specified in the UPVC pipe standard is only 43MPa. Its impact resistance and corrosion resistance are better than UPVC pipes. >>>More
The reason may be that the drainage pipe is deformed, resulting in loose pipes and poor water circulation, which can be solved by using tools to erect the pipes; The reason may be that the parts at the connection between the drain pipe and the indoor unit are faulty, which can be solved by repairing the parts; The reason may be that the temperature of the drain pipe is low, and condensation occurs outdoors, causing condensate to drip, which can be solved by checking the operation of the refrigeration system; The reason may be that the pipe itself has a moth-eaten bite and can be solved by replacing the pipe. 1.The drain pipe is generally short, which is conducive to the smooth outflow of condensate. >>>More
According to the master plan of the city.
Combined with the actual local situation. Layout of drainage pipes and technical and economic comparison of several schemes. First of all, it is necessary to determine the boundary of the drain outlet, and then arrange the drain pipes in the order of the main pipe, the main pipe, and the branch pipe. >>>More