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{"title":"ISO2531 En598 DN80-DN2600 One Leading Manufacturers of K9, C40, C30, C25 Ductile","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/a1\/69\/ed6717fec8f39f9e9ac70904a8ea-200x200-1\/iso2531_en598_dn80_dn2600_one_leading_manufacturers_of_k9_2c_c40_2c_c30_2c_c25_ductile_iron_pipe_cheap_price_for_sale.jpg","attrs":{"Place of Origin":"China","Brand Name":"Zhengde Metal","Price":"negotiable","Payment Terms":"Western Union, MoneyGram, T\/T"}}
{"title":"ISO2531 K9 Push on Joint Zinc Coated Ductile Iron Pipes Round Ductile Pipe 6","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/ba\/7d\/73a6f842c8cf6f73c08ca1dba8bf-200x200-1\/iso2531_k9_push_on_joint_zinc_coated_ductile_iron_pipes_round_ductile_pipe_6_meter_long_di_pipe_factory_for_water_supply.jpg","attrs":{"Place of Origin":"China","Brand Name":"Zhengde Metal","Price":"negotiable","Payment Terms":"Western Union, MoneyGram, T\/T"}}
{"title":"Hot Selling ISO2531 En545 Standard Ductile Cast Iron Flanged Pipes K9 for Water","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/38\/23\/91dc1c11273fa5938aa792b20128-200x200-1\/hot_selling_iso2531_en545_standard_ductile_cast_iron_flanged_pipes_k9_for_water_supply_and_sewage_water_treatment_with_long_serve_.jpg","attrs":{"Place of Origin":"China","Brand Name":"Zhengde Metal","Price":"negotiable","Payment Terms":"Western Union, MoneyGram, T\/T"}}
{"title":"Customized 8 Inch Large Diameter Coating K7 K9 Class Ductile Cast Iron Pipe","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/55\/75\/8247ad499cea0e38b13709b51b42-200x200-1\/customized_8_inch_large_diameter_coating_k7_k9_class_ductile_cast_iron_pipe_800mm_ductile_iron_pipe_300mm_prices_per_ton_for_sale.jpg","attrs":{"Place of Origin":"China","Brand Name":"Zhengde Metal","Price":"negotiable","Payment Terms":"Western Union, MoneyGram, T\/T"}}
{"title":"Competitive Price ISO2531 DN De 80mm 100mm 150mm 200mm Ductile Iron Pipe with","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/a1\/69\/ed6717fec8f39f9e9ac70904a8ea-200x200-1\/competitive_price_iso2531_dn_de_80mm_100mm_150mm_200mm_ductile_iron_pipe_with_manufacturer_price.jpg","attrs":{"Place of Origin":"China","Brand Name":"Zhengde Metal","Price":"negotiable","Payment Terms":"Western Union, MoneyGram, T\/T"}}
{"title":"Complete Variety ISO2531 En598 De 98-1668 DN80-DN2600 Ductile Iron Pipe Used for","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/38\/23\/91dc1c11273fa5938aa792b20128-200x200-1\/complete_variety_iso2531_en598_de_98_1668_dn80_dn2600_ductile_iron_pipe_used_for_hydraulic_2fautomobile_pipe_2c_oil_2fgas_drilling.jpg","attrs":{"Place of Origin":"China","Brand Name":"Zhengde Metal","Price":"negotiable","Payment Terms":"Western Union, MoneyGram, T\/T"}}
Ductile iron pipes refer to pipes that are cast by high-speed centrifugal casting using a centrifugal ductile iron machine after adding nodulizing agent to cast molten iron above No. 18. They are referred to as ductile iron pipes, ductile iron pipes and ductile cast pipes. It is mainly used for the transportation of tap water and is an ideal material for tap water pipelines. The essence of cast iron steel pipe is ductile iron pipe. Because ductile iron pipe has the essence of iron and the performance of steel, it is called this. The graphite in ductile iron pipes exists in spherical form, and the size of graphite is generally grade 6-7. The quality requires that the spheroidization level of cast iron pipes be controlled to level 1-3, with a spheroidization rate of ≥80%. Therefore, the mechanical properties of the material itself have been better improved, and it has the essence of iron and the properties of steel. After annealing, the metallographic structure of ductile iron pipe is ferrite plus a small amount of pearlite, and has good mechanical properties, so it is also called cast iron steel pipe. Features: It has the nature of iron, the performance of steel, excellent anti-corrosion properties, good ductility, and easy installation. It is mainly used for water supply and gas transmission in municipal, industrial and mining enterprises. Development History Editor Broadcast In 1947, H. Morrogh of the United Kingdom discovered that when cerium was added to hypereutectic gray cast iron so that the content was above 0.02wt%, the graphite became spherical. In 1948, A. P. Ganganebin and others in the United States pointed out that magnesium was added to cast iron and then incubated with ferrosilicon. When the residual magnesium amount was greater than 0.04wt%, spherical graphite was obtained. Since then, large-scale industrial production of ductile iron has begun. The history of the use of cast iron pipes can be traced back to 1668, when a 21.14km water pipeline was built in the suburbs of Paris from the Seine River to Versailles. 300 years have passed. Except for the repair and replacement of some pipes and joints, the main body is still in use. Current situation and prospects of ductile iron pipes in my country my country's ductile iron pipe industry started in the early 1990s and developed rapidly with the strong support of the China Urban Water Supply Association. After nearly 30 years of practical use, its safety and practicality have been generally recognized by the water supply industry. In 2008, domestic Annual output has reached 2.2 million tons, 11 times that of 1990. Since my country is a country lacking water resources, with more than 600 water-deficient cities and more than 200 serious water-deficient cities, the water supply and water conservation industry is in the ascendant, and ductile iron pipes have broad development prospects. [1] Features Editor Broadcast Ductile iron pipe is a type of cast iron pipe. Quality requires that the spheroidization level of cast iron pipes be controlled to level 1-3 (spheroidization rate > 80%). Therefore, the mechanical properties of the material itself have been better improved, and it has the essence of iron and the properties of steel. The annealed ductile iron pipe has a metallographic structure of ferrite plus a small amount of pearlite. It has good mechanical properties, excellent anti-corrosion properties, good ductility, good sealing effect, and is easy to install. It is mainly used for water supply and gas transmission in municipal, industrial and mining enterprises. , oil transportation, etc. There is a certain amount of spherical graphite distributed on the ferrite and pearlite matrix. According to the nominal diameter and elongation requirements, the proportion of ferrite and pearlite in the matrix structure is different. The proportion of small diameter pearlite Generally no more than 20%, and large diameters are generally controlled at around 25%. Performance Editor Broadcast Ductile iron pipe is a type of cast iron, an alloy of iron, carbon and silicon. Graphite in ductile iron exists in the form of spheroids. Generally, the size of graphite is grade 6-7. The quality requires that the spheroidization level of the cast pipe be controlled to grade 1-3 (spheroidization rate ≥80%). Therefore, the mechanical properties of the material itself The performance has been better improved, with the essence of iron and the performance of steel. The metallographic structure of the ductile iron pipe after annealing is ferrite plus a small amount of pearlite, and has good mechanical properties. Ductile iron pipe is mainly called centrifugal ductile iron pipe. It has the essence of iron and the performance of steel. It has excellent anti-corrosion performance, good ductility, good sealing effect, and is easy to install. It is mainly used for water supply, gas transmission, and transportation in municipal, industrial and mining enterprises. Oil etc. It is the first choice for water supply pipes and has a high cost performance. Compared with PE pipes, ductile graphite pipes are simpler and faster to install than PE pipes in terms of installation time, and have better internal and external pressure resistance after installation; in terms of airtightness and anti-corrosion, ductile graphite pipes have better airtightness after installation, and are also The anti-corrosion performance can be improved through a variety of anti-corrosion methods; from the perspective of hydraulic performance, the specifications of ductile graphite pipes generally refer to the inner diameter, and the specifications of PE pipes generally refer to the outer diameter, because under the same specifications, ductile graphite pipes can achieve greater runoff; from In terms of comprehensive installation and maintenance costs, ductile graphite pipes have a more superior cost performance. Selection suggestions 1. The selection of ductile iron pipes should be based on the specific conditions of the laying site and the interface form of straight pipes and accessories. 2. Rubber rings are usually made of NBR, SBR, EPDM and other materials. 3. Selection of coating: Choose an appropriate coating according to the internal and external conditions during use. The existing inner coatings are epoxy resin, polyurethane inner and outer coatings, PE film coatings and other new ductile iron pipe products. When selecting, you should understand their performance in detail. advantage In medium and low pressure pipe networks (generally used below 6MPa), ductile iron pipes have safe and reliable operation, low damage rate, convenient and fast construction and maintenance, and excellent anti-corrosion properties. The newly developed "Rock Shield" series of pipelines are suitable for trenchless construction and are widely used in pipeline construction across rivers, roads, and buildings. "Saizin" series pipelines use a special zinc-aluminum alloy external spraying process to improve the corrosion resistance of the pipeline several times and are widely used in construction in highly corrosive soils. shortcoming Generally not used in high-pressure pipe networks (above 6MPa). Because the pipe body is relatively heavy, machinery must be used during installation. If water leakage occurs after the pressure test, all pipes must be dug out, the pipes must be lifted to a height where the clamps can be placed, and clamps must be installed to prevent leakage. Use bullet points to edit and broadcast 1. Trench excavation The bottom width of the trench should be calculated according to the following formula: B=D1+2(b1+b2) In the formula: B-The excavation width at the bottom of the pipeline trench (mm) D1-The outer edge width of the pipeline structure (mm) b1-The width of the working surface on one side of the pipeline (mm) b2-The support width on one side of the pipeline (mm) 2. Groove support The design is based on factors such as trench soil quality, groundwater, groove section, load conditions, etc. It must be strong and reliable to prevent collapse, and the support must not hinder the lowering and stabilizing of the pipe. 3. T-joint pipes should be provided with buttresses at vertical or horizontal turns. The size of the buttress should be determined through calculation based on factors such as pipe diameter, rotation angle, and working pressure. 4. When transporting drinking water, pipelines should not pass through poison-contaminated areas. If they must pass through, protective measures should be taken. 5. All ductile iron pipelines with socket connections must be equipped with buttresses after calculation. Please refer to the National Building Standard Design Atlas 10S505 "Flexible Interface Water Supply Pipeline Buttresses". 6. The external anti-corrosion coating of ductile iron pipes should be galvanized and epoxy asphalt coatings or coatings with higher requirements according to the soil conditions of the place where the pipes are laid. 7. After the pipeline is installed and the pressure test passes, it should be flushed with low chloride ion water and disinfected with 0.03% potassium permanganate aqueous solution. Anti-corrosion treatment editor broadcast 1. Asphalt paint coating Asphalt paint coating is used on pipes carrying gas. Preheating the pipe before painting can improve the adhesion of the asphalt paint and speed up drying. 2. Cement mortar lining + special coating This internal anti-corrosion measure is suitable for pipelines transporting sewage and can improve the corrosion resistance of the lining. 3. Epoxy coal pitch coating Epoxy coal pitch coating is suitable for both gas pipelines and sewage pipelines. It is a two-component coating that has high adhesion and a very smooth surface 4. Epoxy ceramic lining Epoxy ceramic lining is suitable for sewage pipes and gas pipes, but due to the difficulty and high cost of the manufacturing process, there are certain limitations in use. Epoxy ceramic lining has high adhesion and smoothness, and is a good anti-corrosion coating. 5. Aluminate cement coating or sulfate cement coating These two special cement coatings are suitable for internal anti-corrosion of ductile iron pipes used in sewage pipes to improve their ability to resist the erosion 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. It has good wear resistance and corrosion resistance.
Zhengde Ductile iron pipe is a type of cast iron, an alloy of iron, carbon and silicon. Graphite in ductile iron exists in the form of spheroids. Generally, the size of graphite is grade 6-7. The quality requires that the spheroidization level of the cast pipe be controlled to grade 1-3 (spheroidization rate ≥80%). Therefore, the mechanical properties of the material itself The performance has been better improved, with the essence of iron and the performance of steel. The metallographic structure of the ductile iron pipe after annealing is ferrite plus a small amount of pearlite, and has good mechanical properties. Ductile iron pipe is mainly called centrifugal ductile iron pipe. It has the essence of iron and the performance of steel. It has excellent anti-corrosion performance, good ductility, good sealing effect, and is easy to install. It is mainly used for water supply, gas transmission, and transportation in municipal, industrial and mining enterprises. Oil etc. It is the first choice for water supply pipes and has a high cost performance. Compared with PE pipes, ductile graphite pipes are simpler and faster to install than PE pipes in terms of installation time, and have better internal and external pressure resistance after installation; in terms of airtightness and anti-corrosion, ductile graphite pipes have better airtightness after installation, and are also The anti-corrosion performance can be improved through a variety of anti-corrosion methods; from the perspective of hydraulic performance, the specifications of ductile graphite pipes generally refer to the inner diameter, and the specifications of PE pipes generally refer to the outer diameter, because under the same specifications, ductile graphite pipes can achieve greater runoff; from In terms of comprehensive installation and maintenance costs, ductile graphite pipes have a more superior cost performance. The inner wall is sprayed with zinc, cement mortar anti-corrosion materials, etc. Selection suggestions 1. The selection of ductile iron pipes should be based on the specific conditions of the laying site and the interface form of straight pipes and accessories. 2. Rubber rings are usually made of NBR, SBR, EPDM and other materials. 3. Selection of coating: Choose an appropriate coating according to the internal and external conditions during use. The existing inner coatings are epoxy resin, polyurethane inner and outer coatings, PE film coatings and other new ductile iron pipe products. When selecting, you should understand their performance in detail.
DN(mm)
DE(mm)
T(mm)
kg
kg/m
K8
K9
K10
K8
K9
K10
80
98
6
6
6
3.4
12.2
12.2
12.2
100
118
6
6
6.1
4.3
14.9
15.1
15.1
125
144
6
6
6.3
5.7
18.3
18.3
19
150
170
6
6
6.3
7.1
21.8
22.8
22.8
200
222
6
6.3
6.4
10.3
28.7
30.6
30.6
250
274
6
6.8
7.5
14.2
35.6
40.2
44.3
300
326
6.4
7.2
8
18.9
45.3
50.8
56.3
350
378
6.8
7.7
8.5
23.7
55.9
63.2
69.6
400
429
7.2
8.1
9
29.5
67.3
75.5
83.7
450
480
7.6
8.6
9.5
38.3
80
89
99
500
532
8
9
10
42.8
92.8
104.3
115.6
600
635
8.8
9.9
11
59.3
122
137.3
152
700
738
9.6
10.8
12
79.1
155
173.9
193
800
842
10.4
11.7
13
102.6
192
215.2
239
900
945
11.2
12.6
14
129
232
260.2
289
1000
1048
12
13.5
15
161.3
275
309.3
343.2
1200
1265
13.6
15.3
17
237.7
374
420.1
466.1
1400
1462
16
17.1
19
385.3
487
547.2
1600
1668
18.4
18.9
21
526
614.5
690.3
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Quality first: production and inspection in strict accordance with production standards; Price advantage: discounts based on real market prices; Transaction security: There will be no loss of customer funds; After-sales guarantee: the customer's problem is our problem; Long-term cooperation: quality assurance, price advantage, sincere service can last for a long time.
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Company Profile
Shandong Zhengde Metal Manufacturing Co., Ltd. is a production and sales company integrating hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, section steel, steel pipes, steel wires, metal mesh, stainless steel, aluminum, copper and other metal products integrated large enterprises. Five production and sales bases have been formed in Binzhou, Liaocheng, Wuxi, Tianjin, Jinan and Tai'an, with more than 100 production lines, 4 nationally recognized laboratories, 2 technical engineering centers, and 5 enterprise technology centers. Products are exported to more than 50 countries and regions such as North America, South America, Europe, Africa, Oceania, Middle East, and Southeast Asia.
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Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
1997
Total Annual:
500000000-600000000
Employee Number:
1500~1800
Ecer Certification：
Verified Supplier
Shandong Zhengde Metal Manufacturing Co., Ltd. is a company integrating hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, steel sections, steel pipes, heat exchange pipes, automobile exhaust pipes, anchor rods, steel wires, metal mesh, A large compreh... Shandong Zhengde Metal Manufacturing Co., Ltd. is a company integrating hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, steel sections, steel pipes, heat exchange pipes, automobile exhaust pipes, anchor rods, steel wires, metal mesh, A large compreh...
