Qingdao Lianfeng Pipe Industry Co., Ltd. is located in Chengyang District, Qingdao, a beautiful and rich port city. It is adjacent to Jiqing Expressway and Jiaozhou Bay Expressway in the west and Qingdao Port in the south. It has unique geographical advantages and very convenient waterway and * * * transportation environment.
Lianfeng Pipe Industry Co., Ltd. mainly produces pin Qingdao ductile iron pipes, ductile iron pipe fitting Ductile iron Manhole cover And other specifications Pipe Mainly, we provide centrifugal ductile iron pipes, emerging ductile iron pipes and other products with high quality and guaranteed service. Qingdao ductile iron pipe manufacturers we are based on the needs of customers; Based on reasonable price; Open up the market with timely and considerate service. Our business tenet is "win-win cooperation and common development". Qingdao centrifugal ductile iron pipe adopts advanced water cooling at home and abroad casting The equipment and relatively new process have passed the ISO9001 international quality system certification. The products are prepared for production and inspection in strict accordance with the ISO2531 international standard to ensure that each cast pipe has good mechanical properties and a long service life; It is supported by sophisticated facilities and equipment, strong technical force and scientific and advanced management system. The centrifugal spheroidal graphite cast iron pipes and supporting pipe fittings supplied by the company have the advantages of height, high elongation, smooth appearance, corrosion resistance, etc. The products are mainly used for urban water supply, tap water, urban pipe network, fire engineering, garden community and other fluid pressure main pipes. Specification of ductile iron pipe (DN80-DN1200).
Standard for ductile iron pipes
GB/T 13295-2003 Ductile Iron Pipes, Fittings and Accessories for Water and Gas Pipelines
GB/T 17457-1998 General Requirements for Cement Mortar Centrifugal Lining of Ductile Iron Pipes
GB/T 17458-1998 Ductile Iron Pipe Cement Mortar Centrifuge Method Composition Test of Fresh Mortar for Lining
GB/T 17459-1998 Asphalt Coating for Ductile Iron Pipes
GB/T 17456 Zinc Spraying on the Surface of Ductile Iron Pipes
GB/T 17219-1998 Standard for Safety Evaluation of Drinking Water Transmission and Distribution Equipment and Protective Materials
The ductile iron pipes produced by Lianfeng Pipe Industry Co., Ltd. can withstand very high internal pressure. During the hydraulic test, the test pressure is 1MPa higher than the international scale and European scale. Qingdao ductile iron pipe is a kind of cast iron pipe. In terms of quality, the spheroidization grade of cast iron pipe is required to be controlled as Grade 1-3 (spheroidization rate is 80%), so the mechanical properties of the material itself have been better improved, with the nature of iron and the properties of steel. The annealed ductile cast iron pipe has a metallographic preparation of ferrite plus a small amount of pearlite. It has good mechanical properties, good corrosion resistance, good ductility, good sealing effect, simple installation, and is mainly used for municipal, industrial and mining enterprises' water supply, gas transmission, oil transmission, etc. The quality of zinc spraying of Lianfeng Pipe Industry Co., Ltd. conforms to ISO8179. The smaller amount of zinc spraying per square meter of pipe is 130g. The thickness of asphalt paint is not less than 70 μ m. The quality of cement mortar lining conforms to ISO4179 to ensure that the mortar is firm, smooth and has strong adhesion.
We are based on the needs of customers; Based on reasonable price; Open up the market with timely and considerate service. Our business tenet is "win-win cooperation and common development". The company is directly supplied by itself, without agent, with better quality and lower price!
Qingdao Lianfeng Pipe Industry Co., Ltd. has 2.65 million square meters of modern plants and advanced production equipment, with a high degree of automation and mechanization of process equipment. Key equipment such as medium frequency electric furnace and spectrum analyzer are imported from abroad, and the whole production line of centrifugal forming, annealing, zinc spraying, finishing, packaging, etc. ranks at the domestic level. It has a 318m3 blast furnace with a daily output of 700 tons of high-quality molten iron. It uses the blast furnace electric furnace duplex short process continuous casting process to produce centrifugal ductile iron pipes in strict accordance with ISO2531 standards. The main products are 14 types of ductile iron pipes, including DN80-DN1200. The products are widely transported by blast furnace gas through pipes to the pipe production line for full use, which saves energy and reduces production costs, It also reduces the impact on the environment.
After the project reaches its production capacity and efficiency, it can produce 200000 tons of cast iron pipes annually, realize 1.36 billion yuan of new sales revenue, 50 million yuan of profit, and 10 million yuan of taxes, and solve the employment problem for more than 800 people in the local and surrounding villages and towns. The second phase of the project will be started in 2013, with an estimated investment of 350 million yuan and an annual production of 300000 tons of ductile iron pipes. After the completion of the whole project, the total investment will reach 650 million yuan and the annual production capacity will reach 500000 tons.
Qingdao ductile iron pipes are mainly composed of carbon, silicon, manganese, sulfur, phosphorus and magnesium. Executive Standard GB/T13295-2003 ISO2531/20081. Product Standard GB/T 13295-2003 Ductile Iron Pipes for Water and Gas Pipelines Pipe Fittings and Accessories GB/T 17457-1998 General Requirements for Cement Mortar Centrifuge Lining of Ductile Iron Pipes GB/T 17458-1998 Composition Inspection of Cement Mortar Centrifuge Lining of Ductile Iron Pipes GB/T 17459-1998 Bituminous Coating of Ductile Iron Pipes GB/T 17456 Zinc Spraying on the Surface of Ductile Iron Pipes GB/T 17219-1998 Drinking Water Transmission and Distribution Equipment and Protective Materials The safety evaluation standard shall comply with the national standard GB/T13295-91 ISO2531-K9. Product name, specification, material weight/piece (KG) Remarks on unit price: centrifugal nodular cast iron pipe DN100 nodular cast iron pipe 95 5250 6m DN150 nodular cast iron 144 3950 6m DN200 nodular cast iron 194 3950 6m DN250 nodular cast iron 255 3950 6m DN300 nodular cast iron 323 3950 6m DN350 nodular cast iron 403 3950 6m DN400 nodular cast iron 482 3950 6m DN450 nodular cast iron 577 4050 6m DN500 nodular cast iron 669 4050 6m DN600 nodular cast iron Ductile iron 882 3950 6m DN700 ductile iron 1123 4050 6m DN800 ductile iron 1394 3950 6m DN900 ductile iron 1690 electricity 6m DN1000 ductile iron 2017 electricity 6m DN1200 ductile iron 2758 electricity 6m ductile iron pipes are mainly composed of carbon, silicon, manganese, sulfur, phosphorus and magnesium. Executive standard GB/T13295-2003 ISO2531/2003
1、 Purpose Flexible joint cast iron drainage pipe is a kind of gravity sewage drainage pipe, which is widely used for sewage, rainwater drainage and ventilation in high-rise buildings.
2、 High quality low sulfur and low phosphorus pig iron is used, and rare raw materials such as manganese and silicon are used. The molten iron solution has undergone special casting inoculation treatment, and the grain preparation is refined, which greatly improves the tensile strength and impact resistance of straight pipes. The high-speed centrifugal casting process makes the product preparation more compact.
3、 Corrosion resistance 4. No noise due to water rushing 5. Superior service performance 1. High strength 2. Service life more than 50 years 3. Easy maintenance 4. Easy installation and fast construction 5. Good fire resistance 6. Arbitrary cutting 7. Good seismic performance * Wholesale and retail, one piece for sale* Customers can choose the required length or other requirements at will* Ordering and purchasing various steel contracts or special specifications on behalf of others* Adjust the specifications of the warehouse temporarily, so as to save your hard work in purchasing* Transportation, which can be delivered directly to your * * * location* The company is responsible for the integrated quality follow-up of the materials sold to eliminate your worries.
Advantages and disadvantages of ductile iron pipes of Lianfeng Pipe Industry:
advantage
In the medium and low pressure pipe network, the ductile iron pipe has the advantages of safe and reliable operation, low damage rate, convenient and fast construction and maintenance, and good anti-corrosion performance.
shortcoming
In high-pressure pipe network, it is generally not used and has low pressure resistance. Because the pipe body is relatively heavy, machinery must be used during installation. In case of water leakage after pressure test, all pipes must be dug out, lifted to the height that can be put into the clamp, and the clamp shall be installed to prevent water leakage.
Anti corrosion treatment for ductile iron pipes of Lianfeng Pipe Industry:
1. Asphalt paint coating
The asphalt paint coating is used for transporting gas pipeline. Preheating pipes before painting can improve the adhesion of asphalt paint and speed up drying.
2. Special coating for cement mortar lining
This internal anti-corrosion measure is applicable to the pipeline conveying sewage and can improve the corrosion resistance of the lining.
3. Epoxy coal tar coating
Epoxy coal tar coating is applicable to both gas pipeline and sewage pipeline. It is a two-component coating with high adhesion and very smooth surface
4. Epoxy ceramic lining
Epoxy ceramic lining is suitable for sewage pipeline and gas pipeline, but due to the difficulty of manufacturing process and high cost, it has certain limitations in use. Epoxy ceramic lining is a very good anti-corrosion coating with high adhesion and smoothness.
5. Aluminate cement coating or sulfate cement coating
These two special cement coatings are applicable to the internal corrosion prevention of nodular cast iron pipes used for sewage pipes to improve the corrosion resistance of acid and alkali components in sewage.
6. Polyurethane coating
It is a new type of green special coating developed to meet the needs of environmental protection, with good wear resistance and corrosion resistance.
All staff of the company warmly welcome friends from all walks of life to visit, and always serve you wholeheartedly for your career success.
Qingdao Lianfeng Pipe Industry Co., Ltd. is a partner who pursues high quality, maintains reasonable price and provides high-quality services.
Here, on behalf of the company's full-time employees, I sincerely welcome new and old customers at home and abroad to negotiate and cooperate with us, so as to achieve a brilliant future!
Business philosophy: survive with quality, develop with credibility, and make friends with sincerity!
Company tenet: superior products, high service, honesty oriented, reputation and development.
Business purpose: integrity, pragmatism.
Qingdao Lianfeng Management's mission: to provide customers with satisfactory products and services
Enterprise vision: to build a strong steel enterprise with international competitiveness
Core values: create, progress and win together
Business tenet: high-quality products win market integrity and create the future
Unit: Qingdao Lianfeng Pipe Industry Co., Ltd
Business Department I: Manager Li
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Business Department II: Manager Pan
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Address: Shuangyuan Road, Chengyang District, Qingdao, Shandong
