China has a vast territory, complex terrain, diverse climate, rich vegetation types and complex distribution. In the eastern monsoon region, there are tropical rainforest, tropical monsoon forest, tropical evergreen broad-leaved forest in central and southern Asia, mixed deciduous broad-leaved evergreen broad-leaved forest in northern subtropics, temperate deciduous broad-leaved forest, cold temperate coniferous forest, subalpine coniferous forest, temperate forest grassland and other vegetation types. In the northwest of China and the Qinghai-Tibet Plateau, there are dry grassland, semi-desert grassland shrub, dry desert grassland shrub, plateau cold desert, alpine grassland meadow shrub and other vegetation types. There are many kinds of plants in China. According to statistics, there are 300 families, 2980 genera and 24600 species of seed plants, including 2946 genera of angiosperms (accounting for 23.6% of the total genera of angiosperms in the world), and more ancient plants, accounting for about 62% of the total genera in the world. Some plants in China, such as metasequoia and ginkgo biloba, have been extinct in other parts of the world in modern times. They are all "living fossils" that remain in China. Seed plants have three zones of cold, warm and heat, with much more species than the whole of Europe. China also has rich and colorful cultivated plants. In terms of use, there are more than 1000 kinds of timber trees, more than 4000 kinds of medicinal plants, more than 300 kinds of fruit plants, more than 500 kinds of fiber plants, more than 300 kinds of starch plants, more than 600 kinds of oil plants, and more than 80 kinds of vegetable plants.Asia Transmission joint friends, look at honest cooperative enterprise Zhongyuan valve fittings China international Business Service Station, the China region common sense compiled by the editor: It has become one of the countries with the richest plant resources in the world.Transmission joint manufacturer Zhongyuan valve fittings is located in Asia, and the China-EU train runs through the country. Zhongyuan valve fittings has a service team for Asia Transmission joint customers, which can provide Transmission joint coal gas solutions with confidence for China Transmission joint customers!

      Basement civil air defence be airtight casing pipe

      Underground civil air defense flexible closed casing is used in underground engineering, chemical industry, steel, construction, chemical industry, tap water, sewage treatment units. Flexible closed casing is to solve some underground engineering pipeline through the wall, and through the strict waterproof requirements; There are also some structures also need pipeline through the wall, but also limit the pipeline can not be due to temperature change or external force to produce expansion and displacement, more do not allow the pipeline under the action of external factors vibration and design.


      Serving More International Customers with Durable Chinese Products! Dear [Basement civil air defence be airtight casing pipe] customer, welcome! Today is 2023-08-02. Since the ZhongYuan website http://www.xdguandao.com was built, you are the 26145th visitor to ZhongYuan enterprise! ZhongYuan has been committed to petrifaction innovation exploration and product promotion since its inception, and has provided stable performance [Basement civil air defence be airtight casing pipe] products to hundreds of customers!
       

      Product introduction:

      Underground civil air defense flexible closed casing is used in underground engineering, chemical industry, steel, construction, chemical industry, tap water, sewage treatment units. ZhongYuan believe in long-term relationship, that China customer delights can be achieved only through begin focused on what you know best, Zhongyuan valve fittings Reminder China Friends can refer to these knowledge: Flexible closed casing is to solve some underground engineering pipeline through the wall, and through the strict waterproof requirements; There are also some structures also need pipeline through the wall, but also limit the pipeline can not be due to temperature change or external force to produce expansion and displacement, more do not allow the pipeline under the action of external factors vibration and design.Its shell is poured on the wall at a time, and the pipe passes through the middle of the casing. Zhongyuan valve fittings reminds China friends that this information is valuable: The outer diameter of the pipe and the middle of the casing are sealed with packing, which plays a waterproof and reducing role.

      Product name: Basement air defense flexible closed casing

      Name: Closed casing, flexible closed casing

      Caliber specification: [DN50mm-DN3200mm]

      Product color: sky blue, red, green (see product display picture for real color)

      Application: [steel pipe, PP pipe, etc.]

      Product standard: 04FS02 (Atlas number)

      Certification: International ISO9001-2001

      Product grade: Grade A

      Working temperature: -20 degrees to 80 degrees (can also process the whole 304, 316, 316L stainless steel)


      Product advantage:

      1. Flexible closed casing is manufactured in accordance with the national standard 04FS02, and the material is Q235-A.

      2, flexible packing material: asphalt hemp, polystyrene board, polyvinyl chloride foam plastic board.

      3, sealing paste: polysulfide sealing paste, polyurethane sealing paste.

      Note: 1. The thickness of the concrete wall through the pipe should not be less than 200, otherwise one or both sides of the wall should be thickened. The diameter of the thickened part should be at least D4+200. 2. The steel pipe and retaining ring shall be galvanized after welding, and then installed with the casing. Make your factory work easier, not harder, Zhongyuan valve fittings reminds China friends that this information is valuable: After all the installation, the baffle and the fixed flange are welded. 3. The welder adopts manual arc welding, and the welding rod model is E4303


      product feature:

      Flexible closed casing description, air defense closed casing description:

      1. flexible packing material: asphalt hemp, polystyrene board, polyvinyl chloride foam plastic board.

      2. sealing paste: polysulfide sealing paste, polyurethane sealing paste.

      3. The thickness of the concrete wall through the wall should not be less than 300, otherwise the wall should be thickened on one side or on both sides, and the diameter of the thickened part should be at least D5+200.

      4. steel pipe and baffle after welding through galvanized treatment, and then implement and sleeve installation.

      5. Manual arc welding is adopted, and the electrode type is E4303.


      Parts material:

      No

      Name

      Quantity

      Material

      Memo

      1

      Flange casing pipe

      1

      Q235-A

      Welding part

      2

      Gasket

      1

      Neoprene rubber

       

      3

      Flange cover

      1

      Q235-A

      Welding part

      4

      Bolt

      n

      Q235-A

      GB897-88A

      5

      Nut

      n

      Q235-A

      GB/T41-2000

      6

      Steel pipe

       

      Q235-A

      --

      7

      Baffle

       

      Q235-A

       


      Technical parameter:

      DN

      D1

      D2

      D3

      D4

      D5

      D7

      L

      L0

      L1

      L2

      d1

      d2

      d3

      D1

      D2

      K

      n-M

      50

      60

      95

      65

      145

      200

      81

      65

       

      72

      30

      3.5

      4

      8

      65

      86

      4

      4-M12

      65

      76

      114

      80

      165

      220

      96

      65

      25

      72

      30

      3.75

      4

      8

      80

      105

      4

      4-M12

      80

      89

      127

      95

      180

      235

      115

      65

      25

      76

      38

      4

      4

      10

      95

      118

      4

      4-M16

      100

      108

      146

      114

      200

      255

      134

      65

      25

      76

      38

      4

      4.5

      10

      114

      136

      4

      4-M16

      125

      133

      180

      140

      235

      290

      160

      65

      25

      76

      38

      4

      6

      10

      140

      167

      6

      6-M16

      150

      159

      203

      165

      260

      315

      185

      65

      25

      76

      38

      4.5

      6

      10

      165

      190

      6

      6-M16

      200

      219

      265

      226

      320

      375

      246

      65

      25

      76

      38

      6

      6

      10

      226

      252

      6

      6-M16 Production site


      Innovative pipeline product services:

      Professional manufacturing, professional service, innovation pipeline for you to create more value!

      Continuous improvement of service quality, excellence, "sincere service" is the innovation pipeline has been firmly believed in the goal.  Use knowledge to make decisions, Zhongyuan valve fittings reminds China friends that this information is helpful: Innovation pipeline in strict accordance with ISO9001-2000 quality system certification requirements, strict quality control, responsibility to people, to ensure the healthy operation of production, sales, service.  Strengthen communication with users, dedication to provide our customers with excellent products, perfect and beautiful service, innovation pipeline hereby make the following commitment:


      Reasons for choosing innovative pipelines:

      Innovative water supply equipment The reason for becoming a Basement civil air defence be airtight casing pipe long-term partner, the key word "learning culture" Construction of chemical and municipal pipelines in power plants Basement civil air defence be airtight casing pipe service provider -- Innovative water supply equipment firmly believes that training leads to talent, efficiency and quality. The strategy comes from knowledge integration, Asia China Waterproof casing Basement civil air defence be airtight casing pipe rest assured suppliers Zhongyuan valve fittings enterprise overseas customer service station customer service Key Knowledge Reminder: Normalized training is an important part of the work of [Innovative water supply equipment] head office. Keep the original intention and study hard. We always offer the right solution, even if it's not clear at first, Asia China Waterproof casing Basement civil air defence be airtight casing pipe rest assured suppliers Zhongyuan valve fittings enterprise overseas customer service station customer service Key Knowledge Reminder: Innovative water supply equipment There is no end to the training work, only when it is in progress!


      Product standards:

      Steel telescopic products are designed, manufactured and accepted in strict accordance with Chinese GB and HG standards and American API standards. Key Knowledge Points for Related Products in the petrifaction Industry that China Friends Need to Understand: The hardness of the sealing surface shall meet the requirements stipulated by the state, and the width shall exceed the national standards.


      Instructions for purchasing innovative pipeline products:

      1、 Product Material Description: Due to the possibility of scratches or dirt on the surface of materials during transportation or distribution, and the possibility of surface oxidation or insufficient aesthetics during storage, the images and physical objects may also differ. We always offer the right solution, even if it's not clear at first, Zhongyuan valve fittings reminds China friends to understand this information: Our manufacturer will definitely make our products more aesthetically pleasing, using high-quality raw materials for production. Our manufacturer promises that our products are of high quality and affordable, and are entirely a customer's choice. Zhongyuan valve fittings reminds China friends that this information is valuable: If you have other models or specifications of products, you can contact our customer service online or consult us when purchasing

      2. Shipping instructions: 

      1. Due to the unique nature of the materials, all materials are shipped after payment by the customer, and are specially customized products for the customer. Once sold, there are no returns or exchanges for non material or quality issues! Please understand. 

      2. Please provide a clear description of the specific specifications, nominal diameter, working pressure, medium to be conveyed, quantity, and required performance of the required product before shopping. The main reasons for doing so are: 

      1) Ensure that the product prices quoted by the manufacturer are correct and accurate; 

      2) For customers, it provides protection for their own interests and prevents them from misquoting product prices, causing economic losses for both parties and causing unpleasantness for everyone; 

      3) Once the customer has made a decision and both parties sign a contract, the products produced by the manufacturer can meet the actual needs of the customer. 

      3. If the customer did not provide a clear description, the seller will not assume any responsibility in the event of a dispute! Please understand!


      Pre-sale services:

      Product introduction, technical exchange, non-standard product design, troubleshooting.

      In sales service:

      1. Maintain a trustworthy contract, ensure timely supply, and keep in touch with customers at all times. 

      2. For special or complex products, our factory arranges technical personnel to provide training and guidance to users on product use, troubleshooting, adjustment, and maintenance.

      After-sale service:

      1. The warranty period for innovative pipeline products is 12 months from the factory, and the "three guarantees" service (product quality issues) is implemented. 

      2. Our factory regularly organizes technical and inspection personnel to visit our products during use, seeking feedback from users on product quality, usage status, improvement opinions, and other aspects, in order to further improve product quality. 

      3.Quickly respond to customer complaints about product quality issues 

      4. For after-sales service, users are required to fill out the quality feedback form after the service and provide appraisal opinions, in order to jointly improve the product and service quality of the innovation pipeline.


      Order Information:

      1. The customer has special requirements for the product and must provide the following instructions in the order contract:

      1) Structure length; 

      2) Connection form; 

      3) , nominal diameter, full diameter, reduced diameter, pipeline size; 

      4) Medium used and temperature and pressure range; 

      5) Our factory can customize and design special products according to customer specific requirements for experiments, inspection standards, and other requirements. 

      2. Our company can customize and design special products according to customer specific requirements. 

      3. If the customer provides the determined product type and model, the customer should correctly explain the meaning and requirements of the model, and sign the contract on the condition of mutual understanding between the supply and demand parties. 

      Many Basement civil air defence be airtight casing pipe customers choose Zhongyuan valve fittings. The core point is "professional knowledge" petrifaction Basement civil air defence be airtight casing pipe service providers -- Zhongyuan valve fittings training and practice of petrifaction industry Basement civil air defence be airtight casing pipe product knowledge. Zhongyuan valve fittings Every employee can provide pre-sale and after-sales service to customers only if they master the main Basement civil air defence be airtight casing pipe product knowledge! Zhongyuan valve fittings will hire petrifaction industry experts and scholars to the company every year, enter the Basement civil air defence be airtight casing pipe workshop, and carry out detailed training from Basement civil air defence be airtight casing pipe product production principles to petrifaction industry applications. Through continuous learning and training, strengthen the basic knowledge of Zhongyuan valve fittings newcomers about Basement civil air defence be airtight casing pipe, improve the familiarity of Zhongyuan valve fittings employees in the petrifaction industry, improve work efficiency in future work, and better serve Basement civil air defence be airtight casing pipe customers and friends!


      We want China customer to be successful. Thank you for attention to the Basement civil air defence be airtight casing pipe product information, and welcome China friends valuable suggestions , If you have any questions about ZhongYuan Basement civil air defence be airtight casing pipe, please call ZhongYuan technical engineer at [+8618539447368]. Made in China, Helping Globalization!



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      At Zhongyuan valve fittings, you get the products, resources, and tools you need — as quickly as you need them.

      Friends who want to buy can browse“ ZhongYuan water supply equipment” Relevant product customer evaluation and product question and answer:
      China Guangdong old customers who have purchased Basement civil air defence be airtight casing pipe
      ZhongYuan water supply equipment The Basement civil air defence be airtight casing pipe customer service of the enterprise is relatively professional, and the telephone communication is quite clear!
      Basement civil air defence be airtight casing pipe customer friend from China Beijing
      This time Basement civil air defence be airtight casing pipe has a small problem. The manufacturer handled it in a timely manner, which did not affect the use. I hope ZhongYuan water supply equipment manufacturer can improve it next time!
      Basement civil air defence be airtight casing pipe customer from China Jilin
      The contract signed with ZhongYuan is relatively smooth in the implementation process, and ZhongYuan water supply equipment is relatively good in the Construction of chemical and municipal pipelines in power plants industry.

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