Contact info

Qingdao Lotowin Pipe Fittings Co., Ltd.

Add:Zhouji Industrial Park of Jimo,Qingdao China

Tel: 0086-532-83570880
Fax: 0086-532-83533788

Tel: +86-0532-83570880

Fax: +86-0532-83533788

lotowin18@qdlotowin.com

lotowin19@qdlotowin.com

ISO 2531 Dismantling Joints for Fire Hydrant Systems

ISO 2531 Dismantling Joints for Fire Hydrant Systems

Welcome to Qingdao Lotowin Pipe Fittings Co., Ltd.

 

We have 20 years experience on pipes, fittings and valve casting. Our products are widely used in domestic market, European, North American, Japan and many other countries. Our experienced engineers can provide optimizing solution for all the process, will give you the perfect products with very good quality and reasonable price. Good quality products can help you expand the market, win the credit for your brand!

 

Specification

DN50-DN2000(2"-80"),  available with PN10, PN16, PN25 and PN40 flanges.

Standard

ISO2531, ISO4179, ISO8179, BS EN 545, BS EN598, BS4772, ISO7005-2, EN1092-2:1997, DIN2501, GBT13295

Pressure

300PSI, 500PSI, 750PSI, 1000PSI

Pipe ends

Spigot, socket or flanges.

Internal coating

Cement mortar lining comply with ISO4179 or bitumen painting (Ave. min.70 micron)

External coating

Sprayed metallic zinc coating (min.150g/m²) according to ISO8179 + bitumen painting (min.70 micron) or epoxy powder coating or epoxy painting or according to customer’s requirements.

Test

In accordance with ISO 2531 / EN 545 / EN598 and 100% water pressure test.

Accessories

NBR, SBR, EPDM rubber ring according to ISO4633 / EN681.1 are available.

Application

Industrial pipeline system, shipping, mining, fire protection, oil industry, textile industry, water supply project, drainage system, sewerage, irrigation system, etc.

Types

 

Dismantling Joint,Universal Flange Adaptor,
Universal Coupling,
Ductile Iron Loose Flange Joint,
DI Pipe Fitting,Saddle for PVC Pipe,Repair Clamp,
Qucick Flange Adaptor,
Gibault Joint,
Restrained Flange Adaptor,
Restrained Coupling,Valve
Dismantling Joint, Universal Flange Adaptor, Universal Coupling, Ductile Iron Loose Flange Joint, DI Pipe Fitting,Saddle for PVC Pipe, Repair Clamp, Qucick Flange Adaptor, Gibault Joint, Restrained Flange Adaptor, Restrained Coupling, Valve, etc. 

 

Advantages

 

 1. Competitive Price, fast delivery and strict inspection. We are factory, we supply pipes and fittings for more than 20 years, have experienced engineers, efficient workers and professional inspectors, it guaranteed our products have competitive price, short delivery time with very good quality.

 

2. Nearest to Qingdao Port and Qingdao International Airport, only need 1 hour to get there., it can save a lot of transport costs and time.

 

3. Comprehensive standards and materials for your choice.

 

4. 100% water pressure test before delivery.

 

5. One-stop buy. 

 

Main Sales Area:


 

Workshop and Equipments

Machining Workshop Layout

Qingdao Lotowin Pipe Fittings Co., Ltd.

 

Powder Coating Workshop

Qingdao Lotowin Pipe Fittings Co., Ltd.

 

Shot Blasting Room

Qingdao Lotowin Pipe Fittings Co., Ltd.

 

Foam Forming and Machining Workshop

Qingdao Lotowin Pipe Fittings Co., Ltd.

 

Water Pressure Testing Machine

Qingdao Lotowin Pipe Fittings Co., Ltd.

 

Technical Requirements

1.  Dimension and weight requirements

  1> Pipe fittings wall thickness tolerance: -(2.3+0.001DN)

  2> Pipe fittings length tolerance as below.

TYPE

TOLERANCE(mm)

Socket pipes

± 25

Flange pipes

± 25

  3> Weight and allowable tolerance: Pipe fittings weight equal to the sum of pipe body weight and socket weight and flange weight, use the density of 7050 kg/m³. Elbow, with branches pipes and non-standard pipe fittings weight tolerance are ± 12%, other pipe fittings weight tolerance is ± 8%. The weight should be deducted to the decimal, weight accuracy within 1 kg.

2. Material

  1> Pipe fittings material is Ferritic Matrix Ductile Iron.

  2> Physical property should be as below.

3. Technique property test

  1> Water pipes should test the water pressure as below.

DN

Water Pressure Mpa

≤300

3.2

350-600

2.5

≥700

1.8

  2> Gas pipes except above stated water pressure test, still need to use the air to make air-proof test, test pressure should not less than 3 Mpa.

4. Pipe fittings surface

  1> Pipes internal and external should clean and roundness, do not allowed to have flashes, burrs, cracks, winkles, sands, socket and flanges shrinkage to make the wall thickness thin, the defects of influence uses. Pipe fittings external slope seam does not allowed to exceed 1mm, internal and external surface blowholes depth do not exceed 2mm.

  2> Flanges outline clear, do not allowed to have flashes, burrs, cracks, winkles etc. the defects of influence uses and machining.

  3> Socket internal must clear, do not have grooving, lobe exceed to 1mm and blowholes depth exceed to 1mm and width exceed to 1.5mm. Every dimensions and outline must accurate and clear.

  4> Small defections which do not affect usage of pipe fittings should use proper ways to repair it.

5. Coating

  1> All the pipe fittings internal and external surface should have coatings. Water pipe internal have cement mortar lining, external and socket internal spray metallic zinc coating (min.150g/m²) according to ISO8179 and bitumen painting (min.70 micron).

  2> Cement mortar lining thickness and tolerance as blow.

DN

Lining thickness (mm)

Min. average thickness (mm)

One place min. thickness (mm)

Pipe ending thickness tolerance (mm)

≤300

3.5

2.5

1.5

+2

-1

350-600

5

4.5

2.5

+2

-1

  3> For the gas pipes, internal coating is bitumen painting, same as external requirements.

  4> External coating: Pipes and fittings external and socket internal coating are spray metallic zinc coating and bitumen painting.

  5> Thickness requirements: Each area zinc layer average weight should not less than 150g/m², one place minimum thickness not less than 110g/m². Bitumen painting average thickness not less than 70 micron, one place minimum thickness not less than 50 micron.

Packaging & Payment

Packaging: Wooden Cases/Pallet with wrap film or according to customer’s requirements.

Shipment terms: FOB,CIF,CNF

Payment of goods:

First time cooperation, 30% deposit in advance, balanced to be paid before delivery. In the after days, 30% deposit in advance, balanced against copy B/L.