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Ductile Iron Pipe and Fittings
Product Scope
T-Type Centrifugal Ductile Cast Iron Pipe
N1-Type Joint Ductile Iron Pipe for Gas
Ductile Iron Pipe Fittings
Special Fittings
Manufacturing Process
Manufacturing Process
Quality Standard
Manufacturing Equipment
Manufacturing Equipment
Quality Control
Quality Control
Hydrotastic Test
Installation Instruction of Ductile Iron Pipe
Installation Instruction of T-Type Ductile Iron Pipe
Installation Struction of N1-Type Ductile Iron Pipe
 

N1-Type Joint Ductile Iron Pipe for Gas

gas transportation underground,DN80-DN1200mm,ISO2531,BS En545,T type centrifugal cast craft

 


Features of N1-Type Joint Ductile Iron Pipe

1)   High-velocity centrifugal casting, compact tissue, high strength and high pressure
resistance comparative to the steel tube, long useful life.
2)   Low-noise.
3)   Corrosion resistance, such as acid base, liquid waste, salt mist, electrification, that
surpass the steel tube.
4)   Good retractility.
5)   Useing N1-Type flexible joint that is adapt well to the foundations subsided and librated.
6)   The joint is safe with good leak tightness.
7)   The standard and design merged well(could connect with other pipes).
8)   It is convenience to assemble by simple tool (spanner)


Weight of N1-Type Joint Ductile Iron Pipe

Nomminal
Diameter
(mm)		 Outside
Diameter
()mm		 Wall
ThickNess
(mm)
(K9)		 Approximate
Weight of Socket
Section
(kg)		 Weight of Straight
Section kg/m
(K9)		 Weight of Gland
(kg)		 Total Weight of
standard
Working Length
lenth kg(l=6000mm) (K9)		 Number of
Pipes Per Mile
(pc)		 Pipe Weight Per
Mile (Tons) (K9)
100 118+1-2 6.0 10.3 14.9 6 100 167 16.700
150 169+1-2 6.0 13.9 21.8 7.8 145 167 24.215
200 220+1-2 6.3 17.9 30.1 9.8 199 167 33.233
250 272+1-3 6.8 22.6 40.2 11.8 264 167 44.088
300 323+1-3 7.2 27.3 50.8 15.7 332 167 55.444
350 375.5+1-3 7.7 32.3 63.2 17.6 412 167 68.804
400 426+1-3 8.1 38 75.5 20.7 491 167 81.997
500 528+1-4 9.0 48.4 104.3 26.5 674 167 112.558
600 631+1-4 9.9 59.4 137.3 32.5 883 167 147.461


Mechanical Properties of Ductile iron Pipe

 
Standard for manufacturing Nomminal Size DN Tensile Strength Yield Strength Elongation Hardness Hydro.test Airtight Test
mm N/mm2 N/mm2 % HB MPa Mpa
GB/T13295/
ISO2531/
BS EN545		 ≤300 ≥420 ≥300 ≥10 ≤230 5 ≥0.6
350-600 ≥420 ≥300 ≥10 ≤230 4 ≥0.6
700 ≥420 ≥300 ≥10 ≤230 3.2 ≥0.6
 

Drawing of N1-Type Joint

 

Type 1 2 3 4 5 6 7
N1 Nut Bolt Gland Rubber Gasket Support Ring Socket Spigot
 

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