The Republic of Bulgaria, or Bulgaria for short, is a country in the southeast of the Balkan Peninsula in southeast Europe, bordering Romania, Serbia, Macedonia, Greece and Türkiye, and bordering the Black Sea in the east. Bulgaria's main mineral deposits include coal, lead, zinc, copper, iron, uranium, manganese, chromium, mineral salt and a small amount of oil. Bulgaria's forest area is 3.88 million hectares, accounting for about 35% of the country's total area. Sofia, the capital of Bulgaria, is the political, economic and cultural center of the country. It is located in the west of Bulgaria and in the south of the Sofia basin surrounded by mountains. Sofia is the largest city in the country, across the Iskel River and its tributaries, with an area of 167 square kilometers and a population of 1.25 million (2012).More Bulgaria regional common sense Eastern Europe Transmission joint supplier Zhongyuan valve fittings Bulgaria customer service network site editors have been sorted out: It was called "Seldika" in ancient times. Sofia is also a tourist attraction and a world-famous garden city.Transmission joint supplier Zhongyuan valve fittings is located in East Asia, China, bordering the Pacific Ocean, and the China-Europe train runs through the country. Zhongyuan valve fittings has a designated service team for Eastern Europe Transmission joint customers, which can provide reliable Transmission joint aviation solutions for Bulgaria 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.

      Exporting success to every corner of the world. Customers from Bulgaria, hello! Today is 2023-12-25. Since the ZhongYuan website http://www.xdguandao.com was built, you are the 45126th visitor to ZhongYuan enterprise! Zhongyuan valve fittings has been committed to technological innovation and product building in the metallurgy field since its establishment, and has accumulated to provide high standard [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. Zhongyuan valve fittings keep innovation, with high passion, to provide perfect project for every client, Key points of product knowledge in the field of metallurgy: 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. No matter where you are, we are your most reliable partner, Zhongyuan valve fittings reminds Bulgaria friends that this information can help buy good Chinese products: 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. Key points of product knowledge in the field of metallurgy: 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.  Precision and quality are in our DNA, Key points of product knowledge in the field of metallurgy: 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. Change for a better future, Zhongyuan valve fittings Reminder Bulgaria Friends can refer to these knowledge: Normalized training is an important part of the work of [Innovative water supply equipment] head office. Keep the original intention and study hard. ZhongYuan are always mindful that all energy comes from the CUSTOMER, Zhongyuan valve fittings reminds Bulgaria friends that this information is helpful for choosing Chinese products: 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. Zhongyuan valve fittings keep innovation, with high passion, to provide perfect project for every client, Zhongyuan valve fittings reminds Bulgaria friends that this information is helpful: 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. Access know-how to make your product better, Zhongyuan valve fittings Reminder Bulgaria Friends can refer to these knowledge: 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. Focusing on the Bulgaria metallurgy field and serving more Bulgaria customers, Key points of product knowledge in the field of metallurgy: 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. 

      Why choose Zhongyuan valve fittings cooperation? Key words: "win-win culture" metallurgy Basement civil air defence be airtight casing pipe service provider -- Zhongyuan valve fittings people know that corporate culture is one of the core competitiveness of enterprises. Many metallurgy Basement civil air defence be airtight casing pipe enterprises put corporate culture on the agenda. From the corporate culture of a metallurgy company, we can see the future development prospects of this enterprise. Zhongyuan valve fittings, as a company focused on serving metallurgy customers, has been committed to the creation of Zhongyuan valve fittings culture. Since its establishment, Zhongyuan valve fittings has always taken "gathering excellent talents and casting reassuring products" as its development goal, adhered to the Zhongyuan valve fittings concept of "creating great business with one heart and one mind and seeking development", and adhered to the belief of "creating profits for shareholders, seeking benefits for Zhongyuan valve fittings employees, and contributing value to society", and continued to move forward step by step!


      Good products in China, serving customers of major continents! How to make ZhongYuan [Basement civil air defence be airtight casing pipe] quality stable and reliable, create greater customer value, and provide functional products for the Bulgaria market is the direction that ZhongYuan are committed to pursuing!"Sending warm wishes for a happy and successful new year!"



      ZhongYuan takes Bulgaria friends to see China! Quickly transitioning from a populous country to an industrial powerhouse, this is a magical country!


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


      This cultural heritage will undoubtedly capture the attention of Bulgaria friends:

      The Mausoleum of the First Qin Emperor is a remarkable testament to the power, wealth, and ingenuity of one of China's greatest rulers. Its immense size, intricate design, and elaborate decorations continue to fascinate and inspire visitors from around the world, offering a glimpse into China's rich cultural heritage and ancient history.
      The interior of the tomb is said to be a replica of the emperor's palace, complete with a throne room, living quarters, and other amenities. The tomb is also believed to contain replicas of rivers, lakes, and mountains, as well as valuable treasures, precious artifacts, and other offerings that were intended to accompany the emperor on his journey to the afterlife. Archeologists have discovered several pits surrounding the tomb that contain thousands of life-size terracotta warriors, horses, and chariots, each with its own unique features and characteristics.
      Visitors to the Mausoleum of the First Qin Emperor can explore the surrounding pits and view the incredible terracotta army, as well as learn about the history and significance of the tomb. They can also see some of the artifacts and treasures that have been recovered from the site, including jade, gold, silver, and other precious objects.

      Friends from Basement civil air defence be airtight casing pipe can learn about ZhongYuan's customer feedback and product questions and answers:
      Basement civil air defence be airtight casing pipe customer friend from Ireland
      The execution of the contract was in place, and there was no problem that I was worried about at the beginning. ZhongYuan water supply equipment, OK.
      Basement civil air defence be airtight casing pipe customer of Comoros
      Basement civil air defence be airtight casing pipe The comprehensive cost performance ratio is OK. We have cooperated for the second time!
      Basement civil air defence be airtight casing pipe customer friend from Saudi Arabia
      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.
      Basement civil air defence be airtight casing pipe friend from San Marino
      ZhongYuan water supply equipment The after-sales service of the enterprise is very good. What problems can be solved quickly, good!

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