Flange Adaptor with Epoxy Coating

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Product Description:


universal for uPVC,AC,CS,CI & DI pipe
WRAS certificated EPDM
ISO9001 factory

Flange adaptor  universal type for uPVC,asbestos-cement,carbon steel,cast iron,ductile iron pipe

Materials:  GGG50 body and gland

                   EPDM rubber gasket

                   carbin steel bolting grade 8.8 with rubber protection caps

Size available:   DN40--DN600  (1-1/2"--24")


Working pressure: PN10/16/25


Ductile iron pipe is magnesium or rare earth magnesium combined with golden agent in molten iron pouring before joining, nodulizing graphite, stress concentration is reduced, so that the pipe with high strength, high elongation, impact resistance, corrosion resistance, the advantages of good sealing; wall using cement mortar lining, improving water conveyance pipeline

Environment, improve the water supply capacity, reduce energy consumption; pipe adopts the flexible interface, and the pipe itself has larger elongation, the piping flexibility, can the soil around the pipeline and work together in the buried pipeline, improve the stress state of the pipeline, thus improving the reliability of pipe network operation. Therefore, at present our country water industry usually uses the ductile iron pipe as the competent material

The design requirements

The buried depth of pipeline shall be determined according to the degree of freezing, external load and other factors such as pipeline crossing. In general, buried depth may be frozen at the line 0.2 meters below, and meet the following conditions: when the diameter is larger than 100mm, the top of the pipe of minimum depth is 1.20 meters.

Design of trench bottom width is generally pipe outside diameter of 0.5 meters, and according to the soil condition, determination of excavation slope (I) of nodular cast iron pipe and other pipe like, uniform flow of water head loss along hf= lambda /dv2/2g, the difference is only "lambda" (the hydraulic frictional resistance coefficient), i.e., the head loss can be calculated according to the the original cast iron pipe the local resistance loss.

Nodular cast iron pipe and other pipe like, uniform flow of water head loss along as well as hf= lambda /dv2/2g, the difference is only "lambda" (the hydraulic frictional resistance coefficient), i.e., the head loss can be calculated according to the original cast iron pipe the local resistance loss. The emergence of ductile iron pipe provides a new pipe with excellent performance for our water supply industry. In order to apply the ductile cast iron pipe is better in engineering, design and construction personnel should be familiar with the characteristics of nodular cast iron pipe, constantly discover and solve the problem, to make the design more reasonable, the construction is more standardized, so that the new pipe to play a greater role in water supply project.


Strong corrosion resistance, withstand bending, convenient, no peculiar smell harmless water joint health etc.

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Q:What are the categories of ductile iron pipe fittings?
But even if it is plastic and rotational, between the two in the process and the use of the effect also has the essential difference. Pipe fittings, usually coated with epoxy resin in ductile iron grooved pipe fittings. But this kind of pipe in the process without heat pipe trench because of rotational rotational adhesion as mature, its internal plastic heat pipe trench.
Q:How can the ductile iron pipe be punched?
Main points: manual hydraulic drilling machine and drilling machine, drilling machine is to rely on human features manually through the drill holes in the pipeline: the need for manpower and time, simple operation and economic benefits; characteristics of the hydraulic drilling machine is through the electric pump or gasoline pump driven drill holes: human, mechanical opening. The need for daily maintenance, high cost. General aperture 300mm can be done by hand drilling machine
Q:How can the ductile iron pipe be connected to the PE pipe?
Cast iron pipe and PE pipe is connected with a lot of what is the most secure connection, flange connection (PE flange head + anticorrosive steel flanges + rubber gasket).
Q:Connecting process of ductile iron pipe spigot and socket rubber ring
The material is made of metal rubber. It is a kind of homogeneous elastic porous material. It not only has the elasticity of rubber, but also has excellent characteristics of metal, it can work at -150~800 centigrade temperature. At the same time, it can also bear pressure and within a certain range has dual functions of pressure and seal.
Q:How many kinds of elbow of ductile iron pipe?
There are 12.5 degrees and 22.5 degrees elbow, but manufacturers rarely produce. You can consult the manufacturer on the Internet
Q:How much is the installation of a two degree elbow for ductile iron pipe fittings at 11.25 degrees?
Ductile iron pipe, executive standard, GB/T13295-2008ISO2531/2008, national GB/T13295-91 standard, ISO2531-K9 class.
Q:Is the cast iron tube the same as the ductile iron pipe?
According to its manufacturing methods can be divided into: sand, centrifugal pipe, straight pipe, continuous cast iron pipe and sand pipe.According to the material used, it can be divided into gray iron pipe, nodular cast iron pipe and high silicon iron pipe.
Q:Could you tell me how to weld ductile iron parts and steel tubes?
Disk or disk plug connection, it is best to use flange connection. First insert a flange plate on the ductile iron pipe and then screw it with the flange on the weld pipe. But note, because ductile iron pipe material is crisp, and the two connecting flange sealing surface is best all the plane, in order to prevent damage due to uneven iron flange.Material is different, ductile iron pipe is made of ductile iron, seamless steel pipe is made of structural steel. Such as No. 20 steel, No. 35 steel, 16Mn steel and so on. The two is the manufacturing process is also different, ductile iron pipe is generally sand casting molding; seamless steel pipe is made of billet through seamless steel tube mill hot rolling molding.
Q:How is the weight of nodular cast iron pipe calculated?
Ductile iron pipe is a kind of cast iron pipe. In quality, the spheroidization of cast iron pipes is controlled to be 1-3 (spheroidization rate 80%), so the mechanical properties of the cast iron pipes, ductile iron pipes and finished product libraries can be better improved, with the nature of iron and the properties of steel. Ductile cast iron pipe after annealing, the microstructure is ferrite and pearlite, good mechanical properties, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc..
Q:How to inspect ductile iron pipe fittings?
The quality of water supply pipe ductile is a topic worthy of discussion, how to judge the quality of the ductile iron pipe, ductile now on the market is all kinds of pipe, a name sand type ductile iron pipe, ductile water-cooling tube, K8 grade K9 grade ductile iron pipe, ductile iron pipe, also the brand is divided into ductile ductile pipe pipe, big brands, and some well-known manufacturers of producing ductile pipe

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