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Китай заводская цена Высококачественная труба из ковкого чугуна

Китай заводская цена Высококачественная труба из ковкого чугуна

Категория: Iron Pipes >>>
Поставщик: Anqing,Great,Wall,Pipeline,Co.,Ltd.

Цена:*

Количество:

Описание и отзывы

Трекер стоимости

Месяц	Минимальная цена	Макс. стоимость
Sep-16-2025	0.74 $*	0.96 $*
Aug-16-2025	0.44 $*	0.88 $*
Jul-16-2025	0.3 $*	0.61 $*
Jun-16-2025	0.95 $*	0.46 $*
May-16-2025	0.85 $*	0.34 $*
Apr-16-2025	0.1 $*	0.48 $*
Mar-16-2025	0.23 $*	0.80 $*
Feb-16-2025	0.8 $*	0.78 $*
Jan-16-2025	0.34 $*	0.69 $*

Характеристики

Products Description

T type joint ductile iron pipe (push-in type) is the preferred pipe for municipal water supply project, with the advantages of easy installation, good seismic performance, corrosion resistance and so on. Our T-type joint ductile iron pipe sizes range from DN80mm to DN1800. T-type joint nodular cast iron pipes are laid with flexible socket joints in the engineering site.

Advantages of Ductile Iron Pipe

Better Mechanical Properties .

Ductile Iron Pipe have better Mechanical Properties than Steel Pipe and Grey Iron Pipe

Type of pipes	Ductile Iron pipes	Grey Iron pipes	Steel pipes
Tensile strength (N/mm²)	≥420	150-260	≥400
Elongation (%)	DN80-1000 ≥10 DN1100-2600 ≥7	/Negligible	≥18
Hardness (HB)	≤230	≤210	140/Approx.140

Ductile Iron Pipes have better corrosion resistance properties than Steel Pipes and Grey Iron Pipes

The comparison of seawater corrosion resistance

Type of Pipe	Corroded volume when merged into sea water (gr/cm2)
Type of Pipe		After 45 days	After 90 days
Ductile Iron Pipes	0.0060	0.0090
Grey Iron Pipes	0.0060	0.0103
Steel Pipe	0.0294	0.0396

Specifications:
1) The standard of pipe: ISO 2531, EN545 , EN598.
2) Pipe class: K9, C40, C30, C25, etc.
3) Pipe joint: push-on joint(Tyton joint), K type joint, self-restrained joint
4) Effective length: in general, the pipe length is 6m for bulk shipment and 5.7m for container shipment.
5) Internal lining: cement mortar lining as per ISO4179
6) Zinc coating: at least 130g/m2 as per ISO 8179
7) Bitumen painting: at least 70um as per ISO 8179
8) Gaskets are NBR rubber, natural rubber, SBR rubber or EPDM rubber ring as per ISO4633
9) DN 80 - 2,600 mm
10) High strength, lighter than gray iron, good corrosion resistance, no furring, small flow resistance, easy fixing, long life
time
11) Checked by automatic inspection equipment

12) Chemical composition: (%)
3. a) C: 3.5 - 4.0
4. b) Si: 1.9 - 2.6
5. c) Mn:0.15 - 0.45
6. c) P: <0.06
7. d) S: <0.02

13) Process and testing:

1. a) Induction furnace and treated metal (Chemical analysis of raw material, spheroidizing & Nodularity)
2. b) Casting (Visual check and weight check)
3. c) Heat treatment (Micro structure)
4. d) Hydrostatic test (Pressure test)
5. e) Dimensional checks (Checking pipe length and joint, OD, wall thickness, appearance)
6. f) Zinc spraying (Thickness testing)
7. g) Lining and coating (100% visual check, thickness testing randomly)
8. i) Marking and packing (100% visual check)

14) The pipe coating can be customized, such as, zinc-aluminum alloy, PU, etc.

Packing: bundled with steel belts or in bulk
Shipment: in bulk or container

Production Process

Workshop

Hydrostatic Pressure Test

DN(mm)	Minimum Test Pressure (Bar)					Duration Time
		ISO2531-1998			ISO2531-2009	Duration Time
		K<9	K≥9	Preferred pressure classes	S
≤300	0.5(K+1)2	50	40	10S
350-600	0.5K2	40	30	10S
700-1000	0.5(K-1)2	32	25	10S
1200-2000	0.5(K-2)2	25	25	10S
2200-2600	0.5(K-3)2	18	25	10S