Yundum International Airport, 29 kilometers southwest of Banjul City, has a runway length of 3600 meters, which can be used for the take-off and landing of large aircraft. The flights of airlines from Gambia, the United Kingdom, Nigeria, Ghana and other countries can be connected to major cities in the world.Banjul Transmission joint customers trust enterprises Zhongyuan valve fittings Banjul international customer site more Banjul regional knowledge: Banjul is now the political, economic and transportation center of the country, with small industries such as oil extraction (peanut), fish processing and textile. Banjul Port is equipped with two deep-water wharves (16-27m), which can berth seagoing ships and can be navigable all year round from the Gambia River to the east of the country. Banjul exports peanuts and their products, palm kernel, leather, dried smoked fish. Yundum, 22.5 kilometers southwest, has an international airport.Transmission joint service provider Zhongyuan valve fittings is located in the Eurasian continental plate, bordering the Pacific Ocean, and shipping is convenient. Zhongyuan valve fittings has a service team for Banjul Transmission joint customers, which can provide reasonable Transmission joint aviation solutions for Banjul 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.

      Customers from afar, hello! Today is 2025-05-02. Since the ZhongYuan website http://www.xdguandao.com was built, you are the 45126th visitor to ZhongYuan enterprise! ZhongYuan water supply equipment has been committed to technological innovation and product building in the Construction of chemical and municipal pipelines in power plants field since its establishment, and has accumulated to provide quality assured [Basement civil air defence be airtight casing pipe] products for many 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. 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. 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. 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.  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. Normalized training is an important part of the work of [Innovative water supply equipment] head office. Keep the original intention and study hard. 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. 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. 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. 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. 

       

      Less nonsense and more practical work! No amount of rhetoric and packaging planning can compare with doing something on the product! ZhongYuan precipitate the brand value of [Basement civil air defence be airtight casing pipe] with accumulated little actions! It is fate to know each other, and cooperation is a share.


      ZhongYuan takes you to see China! China has a vast geographical area.


      There are many historical and cultural heritages in China.
      ZhongYuan water supply equipment believe these cultural stories with a long history are attractive enough to make friends interested in Chinese Basement civil air defence be airtight casing pipe products.


      This cultural heritage will undoubtedly capture the attention of friends:

      Shaolin Kung Fu also has a rich cultural heritage, dating back to the Tang Dynasty (618-907 AD). The Shaolin Temple, where the style originated, became a center for Buddhist learning and spiritual practice. Over time, the monks at the temple developed a unique martial arts style that incorporated elements of both Buddhist philosophy and physical training. Today, Shaolin Kung Fu remains an important part of Chinese cultural heritage, and the Shaolin Temple has become a popular tourist destination for visitors interested in martial arts and traditional Chinese culture.
      To truly appreciate Shaolin Kung Fu, one must witness it in action. The movements are fluid, powerful, and precise, with each technique carefully honed over centuries of practice. Practitioners of Shaolin Kung Fu are capable of incredible feats of strength and agility, and their movements are a testament to the human body's incredible potential when trained to its full capacity.
      Shaolin Kung Fu is a remarkable martial art that embodies the values and traditions of Chinese culture. Its rigorous physical training, diverse range of techniques, and emphasis on spiritual discipline make it both a challenging and rewarding practice. Whether as a means of self-defense, physical fitness, or personal growth, Shaolin Kung Fu offers a unique opportunity to train both the body and the mind, and to experience a centuries-old tradition that continues to inspire and captivate people around the world.

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      HENAN, CHINA
      Gongyi City, Henan Province, China
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      Hot Product:Retractor,Expansion joint,Transmission joint,Sleeve compensator,Spherical compensator,Waterproof casing

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