2.
FITTINGS:
All ductile fittings are in accordance with the ISO2531,
lined internally with cement as per ISO4179, coated externally
covered by bituminous paint. All fittings are packed with
wooden crate or on wooden basement. Some sorts of fittings
dimensions see the attachment.
3.
RUBBER
GASKETS
All
rubber gaskets for pipes are in accordingly with ISO4633.
all gaskets are packed with wooden cases or in bags. (All
gaskets avoid exposing to light and high storage temperatures).
4.
POLYETHYLENE SLEEVES
As per customer requirement, polyethylene sleeve of 200-micron
thickness in supplied in accordance with ISO8180. all sleeves
are bound with wooden cases or in bags.(All sleeves avoid
exposing to light and high storage temperatures).
5. LUBRICATING
PASE
Push-on joint are sealed during assembly by compression
of the joint gasket. This op
eration
requires the use of lubricating paste to reduce the force
needed for the compression. the paste dose not affect drinking
water quality and inhibits bacterial growth. It is water-resistant,
packaged in containers and can be used over a wide temperature
range (-200C to + 600C).
Technical
Specification:
1. technical specification
of DI Pipes in acc. With ISO2531 and ISO9002.
1.1
Type of Joints:
The pipes are the socket and spigot "push-on"
(Tyton - type) joint in accordance with ISO2531 and ISO9002.
1.2
Manufacture Materials:
All the pig iron for manufacture the Pipes and fittings
are supplied by the our group , which is famous for its
BRAND which is low Sulphur and Phosphorus. The high pig
iron is selected for the production of Ductile Iron Pipes
and Fittings, whose Maine composition as Follows:
|
Composition
|
C
|
Si
|
Mn
|
S
|
P
|
Ti
|
|
Rate
(%)
|
3.5-4.0
|
1.0-1.6
|
Max.0.04
|
Max.0.02
|
Max.0.06
|
Max.0.04
|
Ductile
Iron Pipes and Fittings containing in its final shape spheroid
graphite of quantity can guarantee the mechanical characteristics
as required by ISO2531 and ISO9002.
1.3 Average Density of Metal
is: Appox.7050 kg/m3
1.5
Marking:
The
following marks will be painted on the body of each pipe:
(1) Batch No. indicted the exact date of manufacture;
(2) The nominal diameter "DN***;
(3) The class designation "kg";
(4) The manufacture's identification mark.
(5) Other letters which required by the clients.
On the spigot end of Pipes and Fittings with a push-on type
joint, socket penetration lines (Two white painted lines)
shall appear on the spigot end of each pipe.
1.6
Quality to Pipes and Fittings:
All
Pipes and Fittings are brand new and have no any defects.
Which not more than half a year since its manufacture date
and never been used before. Pipes can be cut, drilled or
machined.
1.7
dimensions
and tolerance for pipe:
|
Normal
Diameter (mm)
|
Unit
Weight (kg)
|
External
Diameter(mm)
|
Thickness
Tolerance(mm)
|
Working
Length (m)
|
|
DN80
|
76.5
|
98
|
6.0-1.35
|
6
|
|
DN100
|
95
|
118
|
6.1-1.4
|
6
|
|
DN150
|
144
|
170
|
6.3-1.45
|
6
|
|
DN200
|
194
|
222
|
6.4-1.5
|
6
|
|
DN250
|
255
|
274
|
6.8-1.5
|
6
|
|
DN300
|
323
|
326
|
7.2-1.6
|
6
|
|
DN350
|
403
|
378
|
7.7-1.65
|
6
|
|
DN400
|
482
|
429
|
8.1-1.7
|
6
|
|
DN450
|
575
|
480
|
8.6-1.75
|
6
|
|
DN500
|
669
|
532
|
9.0-1.8
|
6
|
|
DN600
|
882
|
635
|
9.9-1.9
|
6
|
|
DN700
|
1394
|
738
|
10.8-2.0
|
6
|
|
DN800
|
1123
|
842
|
11.7-2.1
|
6
|
|
DN900
|
1691
|
945
|
12.6-2.2
|
6
|
|
DN1000
|
2017
|
1048
|
13.5-2.3
|
6
|
|
DN1200
|
2758
|
1255
|
15.3-2.5
|
6
|
|
DN1400
|
3563
|
1462
|
17.1-2.4
|
6
|
|
DN1600
|
4516
|
1668
|
18.9-2.9
|
6
|
|
DN1800
|
5591
|
1875
|
20.7-3.1
|
6
|
|
DN2000
|
6784
|
2082
|
22.5-3.3
|
6
|
Tolerances
on straightness of pipe, length of pipes, wall thickness
, joint and others are according to ISO2531 and ISO09002.
1.8
mechanical Properties:
the mechanical properties of Pipes shall be as shown in
the table:
|
Nominal
diameter (mm)
|
Tensile
strength
|
Yield
Strength Min. (N/mm2)
|
Elongation
Min.(%)
|
Hardness
Max. (HB)
|
|
<
DN300
|
420
|
300
|
10
|
230
|
|
350--600
|
420
|
300
|
10
|
230
|
|
700-1000
|
420
|
300
|
10
|
230
|
|
1200-2000
|
420
|
300
|
7
|
230
|
1.9
Coating:
All Pipes are internally centrifugal lined by cement mortar
lining according
to OýISO4179.
All pipes are externally coated by metallic zinc coating
plus bitumen spraying according to ISO8179.
The inside of the socket shall be free of mortar and be
with contrasting bitumen.
