Ductile Iron fittings

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Specifications

China ductile cast iron fittings bend/elbow with flange
Standard:EN545/ISO2531/NBR7675
PN10/PN16/PN25
FBEP/BITUMEN COATING

TAWIL EN545/ISO2531 China ductile cast iron fittings bend/elbow with flange  :

Material:ductile iron Pipe Fitting;

Type: All sockets tee or All flange tee or double flange with flange branch tee;

Joint structure: Socket or Flange or mechanical joint  or Push-on Joint ;

Product Description

EN545/ISO2531/NBR7675 ductile iron pipe tee fittings product data:

       Joint structure >>>

TAWIL EN545/ISO2531 China ductile cast iron fittings bend/elbow with flangeTAWIL EN545/ISO2531 China ductile cast iron fittings bend/elbow with flange

       Mechanical Properties >>>

Centrifugal Cast Pipes

                                       Fittings

DN80toDN1000

DN1100toDN2600

Tensile Strength

Min.420N/mm2

Min.420N/mm2

Elongation

Min.10%

Min.7%

Min.5%

Proof Stress

Min.30N/mm2

Min.300N/mm2

Hardness

Max.230HB

Max.250HB

The proof stress shall be measured only upon special agreement and under conditions which shall be specified in the order.

       Deviation and tolerances on length>>>

The permissible deviation on the standard working length of fittings with sockets and fittings with flanges are given in table as follows:

Type of fitting

Length

Deviation(mm)

Flanged socket  

L

DN80 to DN1200 ± 25                                      DN1400 to DN2000 ± 35

Flanged spigot

Collar

Taper

Bend90°

t

±(15+0.03DN)

Bend45°

t

±(10+0.025DN)

Bend22.5°and11.25°

t

DN80toDN1000±(10+0.02DN) DN1200toDN2000±(10+0.025DN)

Tee

L and h

DN80toDN1200-25+50                                  DN1400todn2000-35+75

       Tolerances on manufacturing working lengths>>>

The standard tolerance on the manufacturing working lengths of all fittings with flanges in all nominal size is ±10mm On request in the order and by agreement between the manufacturer and the purchaser,smaller tolerances can be accepted but not less than: ±3mm for DN600and±4mm for DN≥700

       Works leak-tightness test>>>

The fitting shall be submitted at the works to a leak-tightness test,carried out either with air at a pressure of 1 par or with water at the pressure given in table as following:

Nominal size  DN

Hydrostatic leck-tightness test pressure bar

Fittings

DI Pipe with weld-on or screwed-on flange

PN10

PN16

PN25

PN40

80DN300

25

16

25

32

40

350DN600

16

700DN2000

10

       Internal protection>>>

Spun the blast furnace cement mortar lining complying with the standard ISO4179, or we may offer special protective coating according to customers requirements.

       External Protection>>>

Metallic zinc complying with the standard ISO8179,and bitumen,or we may offer special protective coating according to the customer's requirements.

       Ductile iron pipe fittings-----BEND>>>


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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 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
Q:Could you tell me how to weld ductile iron parts and steel tubes?
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:Connecting process of ductile iron pipe spigot and socket rubber ring
Rubber seal ring is formed by one or several parts of the cover, fixed in a ring or a washer bearing and another ring or gasket contact or the formation of the labyrinth of narrow gap, to prevent leakage of lubricating oil and foreign matter.
Q:How can ductile iron pipes be connected to steel tubes?
First insert a flange plate on the ductile iron pipe and then screw it with the flange on the weld pipe.
Q:How much is the installation of a two degree elbow for ductile iron pipe fittings at 11.25 degrees?
The main components of ductile iron pipes are carbon, silicon, manganese, sulfur, phosphorus and magnesium. In the ferrite and pearlite matrix on the distribution of a certain number of spheroidal graphite, according to the nominal diameter and the elongation of different microstructure of ferrite and pearlite in different proportions of small caliber pearlite percentage is generally not more than 20%, large diameter of the general control in about 25%. Minimum tensile strength: 420/Mpa, minimum yield strength 300/Mpa, minimum elongation 7%.
Q:Comparison of C and K grades of ductile iron pipes
The nominal pressure ratio of the C class pipe is lower than that of the K grade tube, and the applied pressure is low.
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: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:How to improve the quality of nodular cast iron pipe fittings
When the molten iron temperature is too low and the inner wall temperature of the tube is low, heavy skin defects will occur. When the molten iron temperature is high and the molten iron gas increases, porosity defects can be generated. In the medium frequency furnace, the hot metal should be provided according to the process specification, and the temperature of the inlet and outlet and the cooling rate can be controlled reasonably in the process of production.

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