DUCTILE IRON PIPE DN500 K8

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Product Description:

Specification:

1) The standard of pipe: ISO2531:1998, K9

2) Effective length: 6m

3) Inner cement line: Portland cement line as per ISO4179

4) Zinc coating: at least 130g/m2 as per ISO8179

5) Bitumen painting: at least 70um as per ISO8179

6) With 100% quantity of NBR ring, or SBR ring, or EPDM ring as per ISO4633

7) DN80mm-800mm

8) High strength, lighter than grey iron, good corrosion resistance, no furring, small flow resistance, easy fixing, long life tome about 100 yeas

9) Produced by Hangzhou chunfeng machine

10) Checked by automatic inspection equipment

11) Composition:

Chemical composition

Chemical composition

Ductile Cast Iron Pipe (%)

Grey iron pipe (%)

Steel pipe (%)

C

3.5-4.0

3.2-3.8

0.1-0.2

Si

1.9-2.6

1.4-2.2

0.15-0.4

Mn

0.15-0.45

0.4-0.6

0.3-0.6

P

≤0.06

≤0.3

0.02-0.03

S

≤0.02

≤0.1

0.02-0.03

Mg

0.03-0.06

12) Feature:

Mechanical properties

Ductile Cast Iron Pipe

Grey Iron Pipe

Steel Pipe

Tensile Strength(Mpa)

≥420

150-260

≥400

Yield Strength(Mpa)

≥300

No Confirmation

No Confirmation

Bending Strength(Mpa)

≥590

200-360

≥400

Elongation (%)

≥10

Neglected

≥18

Brinell Hardness(HBS)

≤230

≤230

About 140

13) T type mechanical joint

14) Packing: in bulk or container

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Q:What is the difference between flexible joint mechanism and seismic cast iron pipe DN100 and ductile iron pipe?
Nodular cast iron has high strength and strong plasticity. The tensile strength of ductile iron is twice that of gray iron, and the yield strength even exceeds that of cast steel.
Q:What kind of valves are commonly used in ductile iron pipes?
Gate valve, butterfly valve, globe valve, check valve flange of various valves, (but the pipeline used for water supply and some limitations of the transport medium may be prescribed valve type) now due to material improvements in the technology, in most cases, smaller pipe diameter is also large diameter pipe outlet valve, butterfly valve, because of the pipeline the large diameter pressure in the pipeline and water than the small caliber to open and close the valve, to human hard, efficiency is not high, so for butterfly valve,
Q:How can the connection of ductile iron pipe elbow be convenient for connecting?
The utility model relates to a groove connecting pipe which has the function of sealing and sealing, and mainly comprises three parts: a sealing rubber ring, a clamping band and a locking bolt. The inner rubber sealing ring is arranged on the outer side of the connecting pipe and is matched with the pre rolling groove, and then the outer ring is buckled on the rubber ring, and then can be fastened with two bolts. Because of the special sealing structure design of the rubber sealing ring and the clamp hoop, the groove connecting piece has good sealing property, and the sealing property is enhanced correspondingly with the increase of the fluid pressure in the pipe.
Q:Disadvantages of ductile iron pipes
The strength of nodular cast iron is comparable to that of cast steel. Ductile iron has higher yield strength, the lowest yield strength is 40K, while the yield strength of cast steel is only 36k.
Q:How to correctly measure ductile iron pipe
The outer diameter of the ball tube is measured around the outer edge of the pipe. The caliper is used to measure the inside diameter of the pipe. The length of the pipe is measured by a ruler or tape measure,
Q:How can the ductile iron pipe elbow be fixed?
The groove connecting pipe consists of two categories of products: sealing function of pipe connections with rigid joint, flexible joint, mechanical three and groove flange; the pipe connections transition of elbow, three links, four links, different diameter pipe, blind plate etc..
Q:Ductile iron and gray iron is what are the advantages and disadvantages of it
Comparison of ductile iron and cast iron (gray iron)Compared with cast iron, ductile iron has an absolute advantage in strength. The tensile strength of ductile iron is 60K, while the tensile strength of cast iron is only 31k. The yield strength of ductile iron is 40K, while the cast iron does not show yield strength, and eventually breaks. The strength to cost ratio of ductile iron is far superior to that of cast iron. Ductile iron is the same as cast iron in corrosion resistance.
Q:How can the ductile iron pipe be welded?
Welding cast iron is mainly in three aspects: carbon control, stress elimination, structural adjustment. You can choose better welding materials, such as WE777 and other imported welding materials. Crack resistance is very good. In addition, the sewing process can be adopted in the structure to increase the stability of the welding effect. You can learn more about WE777 welding applications.
Q:What is the relationship between the installation direction of the ductile iron pipe and the direction of flow?
The ductile iron pipe is installed in the direction of the current.
Q:What are the requirements for the hydrostatic test of ductile iron pipes?
The pipe work pressure P is less than 0.5MPa, the test pressure is 2P, the pipe work pressure is greater than 0.5MPa, the test pressure is P+0.5. After the water pressure rises to the test pressure, the pressure is fixed for 10 minutes, and the pipe joint and the pipe body are not damaged and leaked.

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