PIPELINE SOLUTIONS FOR THE FUTURE

SMU Zn range Face efficiently climatic stress

1

5 6

7

10

2

3

4

1198

PROJECT

1 Conrad Hong Kong

2 Grand Promenade

3 Landmark Central

4 Tai Koo Shing

5 The Pacific Place

6 Festival Walk

7 New World Millenium Hong Kong Hotel

8 New World Centre H2

9 Whampoa Garden

10 Hong Kong Convention & Exhibition Centre

11 Headland Hotel

Atmospheric corrosion in coastal regionsAs its name well indicates, atmospheric corrosion describes the reaction of the air oxygen with a metal, at ambient temperature, when moisture and pollutants combine to create an electrolyte film on its surface.

It could be compared with corrosion in liquid medium except that the corrosion products can evaporate completely during the drying phases to recompose during the wet phases.

The corrosivity classification is defined by three parameters: pollution, airborne salinity, and relative humidity.

The atmospheric corrosion phenomenon is closely related to the pollutants encountered in the atmosphere and the moisture percentage.

In Hong Kong area, the main pollutants contained in the atmosphere are sulfur dioxide SO2, various nitrogen oxides Nox, the chlorides Cl and dust, mostly coming from the mainland.

From the corrosion point of view, chlorides (especially present in coastal areas) and SO2 (coming from the combustion of coal and oil) are the most important species.

For itself, SO2 is responsible for acid rains because when reacting with water it produces sulfurous acid H2SO3.

Saline particles in marine atmospheres also accelerate metallic corrosion processes; marine chlorides dissolved in the layer of moisture considerably raise the conductivity of the electrolyte layer on the metal.

Sustainability The construction sector being energy consuming, new policies all over the world aim at protecting properties and delay demolition. Mostly retro-fit and sustainable systems with easy maintenance will be favoured.

Many buildings in Hong Kong have their drainage systems exposed to climatic stresses a way or another: U.V, heat and damp.

In the East Pacific rim region, including Hong Kong, the climatic stress is increased by atmospheric pollution, similarly observed in the China mainland area, which enhances acidic aerosols.

Plastic waste water drainage systems are mostly sensitive to heat variation and are ageing under U.V effects whilst cast iron pipeworks are not. But being metallic systems, if not suitably protected, they suffer from atmospheric corrosion.

Anode

CORROSION

e-

Anodecurrent

Cathodecurrent

REDUCTIONof oxidising species

Metalstructure

Electrolyticmedium (soil or water)

Anodic oxidation of the metal: Fe�Fe2++2e-

Cathode

Curent Flow (ionic conduction)

Curent Flow (electron conduction)

ANODE

CATHODE

3

1

5 6

7

10

2

3

4

1198

PROJECT

1 Conrad Hong Kong

2 Grand Promenade

3 Landmark Central

4 Tai Koo Shing

5 The Pacific Place

6 Festival Walk

7 New World Millenium Hong Kong Hotel

8 New World Centre H2

9 Whampoa Garden

10 Hong Kong Convention & Exhibition Centre

11 Headland Hotel

Atmospheric corrosion in coastal regions

As its name well indicates, atmospheric corrosion describes the reaction of the air oxygen with a metal, at ambient temperature, when moisture and pollutants combine to create an electrolyte film on its surface.

It could be compared with corrosion in liquid medium except that the corrosion products can evaporate completely during the drying phases to recompose during the wet phases.

The corrosivity classification is defined by three parameters: pollution, airborne salinity, and relative humidity.

The atmospheric corrosion phenomenon is closely related to the pollutants encountered in the atmosphere and the moisture percentage.

In Hong Kong area, the main pollutants contained in the atmosphere are sulfur dioxide SO

2, various

nitrogen oxides Nox, the chlorides Cl and dust, mostly coming from the mainland.

From the corrosion point of view, chlorides (especially present in coastal areas) and SO

2 (coming

from the combustion of coal and oil) are the most important species.

For itself, SO2 is responsible for acid rains because

when reacting with water it produces sulfurous acid H

2SO

3.

Saline particles in marine atmospheres also accelerate metallic corrosion processes; marine chlorides dissolved in the layer of moisture considerably raise the conductivity of the electrolyte layer on the metal.

Sustainability

The construction sector being energy consuming, new policies all over the world aim at protecting properties and delay demolition. Mostly retro-fit and sustainable systems with easy maintenance will be favoured.

Many buildings in Hong Kong have their drainage systems exposed to climatic stresses a way or another: U.V, heat and damp.

In the East Pacific rim region, including Hong Kong, the climatic stress is increased by atmospheric pollution, similarly observed in the China mainland area, which enhances acidic aerosols.

Plastic waste water drainage systems are mostly sensitive to heat variation and are ageing under U.V effects whilst cast iron pipeworks are not. But being metallic systems, if not suitably protected, they suffer from atmospheric corrosion.

CORROSION

e-

Anodecurrent

Cathodecurrent

REDUCTIONof oxidising species

Metalstructure

Electrolyticmedium (soil or water)

�

ANODE

CATHODE

3

PAM pipe systems PAM cast iron pipe systems are tough and the quality of their zinc coating will still extend their lifespan. In normal operating condition, they need minimal maintenance during their service life.

Should new appliances be added, cast iron pipe systems are flexible and allow possible extensions or retro-fit. Removable mechanical couplings make them easier and cheaper, without cutting into the stack.

Protect your pipes through galvanic effect.PAM cast iron drainage pipe systems are worldly recognized for their outstanding properties and reliability in operation: strength, mechanical stability, accidental pressure resistance, long lasting water tightness

Cast iron being a metallic alloy is though sensitive to corrosion. The benefit of more than 100 years of experience in pipe systems, substantiated by numerous tests, conducted in labs and on the field under operating conditions has resulted in the design of effective coatings, fitted for specific purposes.

Waste water or rainwater drainage systems must fit their purpose over time despite adverse exposures. The pipe systems shall be suitably coated to resist corrosion and protect their service life.

To protect pipes from external corrosion, Saint-Gobain PAM has developed flame applied zinc coating.

The zinc metal coating is an active protection provided by the galvanic action of a zinc-iron cell.

This action is twofold:

- Formation of a stable protective layer of insoluble zinc salts

- Self-healing of any accidental damage.

Zinc metal coating is an excellent corrosion inhibitor and is extremely effective in extending the lifespan of products adversely exposed to climatic stress.

To address the corrosivity level of the Hong Kong area Saint-Gobain PAM carried out test to select the most adequate pipe external coating to withstand 3 000 hours of salt spray tests acc to the test method of ISO 9772 : 2012*, and comply with EN 877 requirements as for blistering and rusting criteria.

After lab tests, substantiated by a report from the Swiss PEAk Laboratory, and full scale tests, SAINT-GOBAIN PAM retained for the new PAM SMU Zn range a zinc metal coating applied on the pipes in thick layer, fully adapted for climatic stresses.

Products features and compliance to StandardsThe SMU Zn range fully complies with EN 877 requirements. This compliance is third party validated.

Pipe range DN 50-600

Pipes SMU Zn range

DN 50 – DN 300

Thick zinc coating

• Internal coating: one layer of epoxy coating ocher 130 μm

• External coating: Zn 260 g/m² + 40 μm of red brown acrylic

• Specific marking : SMU S Zn in italic, blue colour

Pipe SMU S range

DN 400-600

Zinc-aluminium coating

• Internal coating: one layer of epoxy coating ocher 130 μm

• External coating: ZnAl(Cu) 400 g/m² + 40 μm of red brown acrylic

The zinc aluminium alloy enriched with copper has outstanding anti-corrosion properties. The compared tests showed they were at least equivalent to Zn applied in thick layer.

Fittings S Range • Coating: red brown epoxy

Where climatic stresses are to be feared, SAINT-GOBAIN PAM recommends that PAM Rapid all stainless steel W5 couplings be used.

Pipes product codes

DN 50 : 241706

DN 75/80 : 241708

DN 100 : 241709

DN 125 : 253994

DN 150 : 241710

DN 200 : 253915

DN 250 : 253916

DN 300 : 253917

DN 400 : 3,00 m 260554 2,80 m 261111

DN 500 : 3,00 m 185194 2,80 m 222513

DN 600 : 3,00 m 185195 2,80 m 222514

1 Two-part epoxy resin inner lining (130µm in average).

2 Cast iron De Lavaud process

3 Anti corrosion layer : flame applied zinc metal coating 260g/m2 in average

4 Primer coating acrylic paint, red brown colour Dry film average thickness: 40µm

Zinc coated: a white line of zinc salts shows that the damage is perfectly plugged.

Non-zinc coated: the damage worsened and the corrosion (red marks) extends beyond the notch

Zinc spray

* supersedes former ISO 7253 (canceled)

54

PAM pipe systems

PAM cast iron pipe systems are tough and the quality of their zinc coating will still extend their lifespan. In normal operating condition, they need minimal maintenance during their service life.

Should new appliances be added, cast iron pipe systems are flexible and allow possible extensions or retro-fit. Removable mechanical couplings make them easier and cheaper, without cutting into the stack.

Protect your pipes through galvanic effect.

PAM cast iron drainage pipe systems are worldly recognized for their outstanding properties and reliability in operation: strength, mechanical stability, accidental pressure resistance, long lasting water tightness

Cast iron being a metallic alloy is though sensitive to corrosion. The benefit of more than 100 years of experience in pipe systems, substantiated by numerous tests, conducted in labs and on the field under operating conditions has resulted in the design of effective coatings, fitted for specific purposes.

Waste water or rainwater drainage systems must fit their purpose over time despite adverse exposures. The pipe systems shall be suitably coated to resist corrosion and protect their service life.

To protect pipes from external corrosion, Saint-Gobain PAM has developed flame applied zinc coating.

The zinc metal coating is an active protection provided by the galvanic action of a zinc-iron cell.

This action is twofold:

- Formation of a stable protective layer of insoluble zinc salts

- Self-healing of any accidental damage.

Zinc metal coating is an excellent corrosion inhibitor and is extremely effective in extending the lifespan of products adversely exposed to climatic stress.

To address the corrosivity level of the Hong Kong area Saint-Gobain PAM carried out test to select the most adequate pipe external coating to withstand 3 000 hours of salt spray tests acc to the test method of ISO 9772 : 2012*, and comply with EN 877 requirements as for blistering and rusting criteria.

After lab tests, substantiated by a report from the Swiss PEAk Laboratory, and full scale tests, SAINT-GOBAIN PAM retained for the new PAM SMU Zn range a zinc metal coating applied on the pipes in thick layer, fully adapted for climatic stresses.

Products features and compliance to StandardsThe SMU Zn range fully complies with EN 877 requirements. This compliance is third party validated.

Pipe range DN 50-600

Pipes SMU Zn range

DN 50 – DN 300

Thick zinc coating

• Internal coating: one layer of epoxy coating ocher 130 μm

• External coating: Zn 260 g/m² + 40 μm of red brown acrylic

• Specific marking : SMU S Zn in italic, blue colour

Pipe SMU S range

DN 400-600

Zinc-aluminium coating

• Internal coating: one layer of epoxy coating ocher 130 μm

• External coating: ZnAl(Cu) 400 g/m² + 40 μm of red brown acrylic

The zinc aluminium alloy enriched with copper has outstanding anti-corrosion properties. The compared tests showed they were at least equivalent to Zn applied in thick layer.

Fittings S Range • Coating: red brown epoxy

Where climatic stresses are to be feared, SAINT-GOBAIN PAM recommends that PAM Rapid all stainless steel W5 couplings be used.

Pipes product codes

DN 50 : 241706

DN 75/80 : 241708

DN 100 : 241709

DN 125 : 253994

DN 150 : 241710

DN 200 : 253915

DN 250 : 253916

DN 300 : 253917

DN 400 : 3,00 m 260554 2,80 m 261111

DN 500 : 3,00 m 185194 2,80 m 222513

DN 600 : 3,00 m 185195 2,80 m 222514

1 Two-part epoxy resin inner lining (130µm in average).

2 Cast iron De Lavaud process

3 Anti corrosion layer : flame applied zinc metal coating 260g/m2 in average

4 Primer coating acrylic paint, red brown colour Dry film average thickness: 40µm

Zinc coated: a white line of zinc salts shows that the damage is perfectly plugged.

Non-zinc coated: the damage worsened and the corrosion (red marks) extends beyond the notch

Zinc spray

* supersedes former ISO 7253 (canceled)

54

Watertightness, now and later.

Cast iron mechanical stability, the excellent properties of the mechanical couplings such as pressure resistance, the careful selection of the elastomers and their long lasting characteristics ensure the PAM pipe systems keep watertight over time.

Owing to conventional installation with simple tools, instant water tightness is also easily reached.

Mechanical stability

PAM cast iron is not sensitive to climatic or thermal stresses. Its mechanical properties are stable; the performances of the PAM cast iron pipe systems will not deteriorate over time thus ensuring long term serviceability.

Resistance to climatic stress

Exposed pipe systems can be submitted to solar radiation, damp or heat. Unlike for plastics, cast iron’s mechanical properties, are not sensitive to U.V ageing, and cannot be altered.

Unrivalled toughness.

Spun using a «de Lavaud» process, PAM cast iron pipes show an outstanding resistance to shocks which can arise prior or during installation and in operation.

Pipeworks exposed outdoor or in parking lots and technical premises could potentially be damaged, accidentally or deliberately.

PAM cast iron is robust and durable and less liable to break or crack than any other drainage material.

EXTREM 1 is a one component product, red mat colour.

It is available in 250 ml (ref 226788) and 500ml (ref 226962).

For indication the 500 ml tub covers the repair of 75 DN 100 cut ends in average.

These results indicate greater resistance to impacts and crushing, easier machining and cutting. This also means the products are easier to install on job sites.

Care means operation safety

To avoid premature and costly repairs causing significant disturbance in buildings operation, it is accepted that drainage pipe systems should be long lasting.

In Hong Kong, the pipe systems installed outdoor are over painted with an anti-rust paint prior to their installation. The acrylic paint on the pipes is a primer which for outdoor exposures had to be over painted. It has been selected so that any alkyd resin, or glycerophtalic paint dedicated to metal care and complying with specific local requirements can be used.

Prior to over painting, the pipes should be gently rubbed down with a suitable abrasive paper, in order to provide a good adhesion and to gently remove possible zinc salts. This action enhances the quality of finish coating.

Reminder: To efficiently fight corrosion, where pipes are cut on site, ends shall be cut clean and square with burrs removed and then re-coated with the adequate touch-up paints EXTREM 1, or other repair products recommended by Saint-Gobain PAM.

Durability of the PAM pipe systems: lifespan proven by history

The pipes Saint-Gobain PAM process Others EN 877 requirements

Tensile Strength on samples in MPa (average value) 300 270 200 mini

Ring Crush Strength in MPa (average value, DN 100 pipes) 450 360 350 mini

Brinell Surface Hardness in HB 220 245 260 maximum

The PAM ranges, being assembled and anchored, have successfully passed a high-pressure jetting test: cleaning pressure of 120 bar from the pump, which means 100 bar at the nozzle outlet, without leakage or misalignment.

EXTREM 1 is a one component product, red mat colour.EXTREM 1 is a one component product, red mat colour.EXTREM 1 is a one component product, red mat colour.

76

Watertightness, now and later.

Cast iron mechanical stability, the excellent properties of the mechanical couplings such as pressure resistance, the careful selection of the elastomers and their long lasting characteristics ensure the PAM pipe systems keep watertight over time.

Owing to conventional installation with simple tools, instant water tightness is also easily reached.

Mechanical stability

PAM cast iron is not sensitive to climatic or thermal stresses. Its mechanical properties are stable; the performances of the PAM cast iron pipe systems will not deteriorate over time thus ensuring long term serviceability.

Resistance to climatic stress

Exposed pipe systems can be submitted to solar radiation, damp or heat. Unlike for plastics, cast iron’s mechanical properties, are not sensitive to U.V ageing, and cannot be altered.

Unrivalled toughness.

Spun using a «de Lavaud» process, PAM cast iron pipes show an outstanding resistance to shocks which can arise prior or during installation and in operation.

Pipeworks exposed outdoor or in parking lots and technical premises could potentially be damaged, accidentally or deliberately.

PAM cast iron is robust and durable and less liable to break or crack than any other drainage material.

EXTREM 1 is a one component product, red mat colour.

It is available in 250 ml (ref 226788) and 500ml (ref 226962).

For indication the 500 ml tub covers the repair of 75 DN 100 cut ends in average.

These results indicate greater resistance to impacts and crushing, easier machining and cutting. This also means the products are easier to install on job sites.

Care means operation safety

To avoid premature and costly repairs causing significant disturbance in buildings operation, it is accepted that drainage pipe systems should be long lasting.

In Hong Kong, the pipe systems installed outdoor are over painted with an anti-rust paint prior to their installation. The acrylic paint on the pipes is a primer which for outdoor exposures had to be over painted. It has been selected so that any alkyd resin, or glycerophtalic paint dedicated to metal care and complying with specific local requirements can be used.

Prior to over painting, the pipes should be gently rubbed down with a suitable abrasive paper, in order to provide a good adhesion and to gently remove possible zinc salts. This action enhances the quality of finish coating.

Reminder: To efficiently fight corrosion, where pipes are cut on site, ends shall be cut clean and square with burrs removed and then re-coated with the adequate touch-up paints EXTREM 1, or other repair products recommended by Saint-Gobain PAM.

Durability of the PAM pipe systems: lifespan proven by history

The pipes Saint-Gobain PAM process Others EN 877 requirements

Tensile Strength on samples in MPa (average value)

300 270 200 mini

Ring Crush Strength in MPa (average value, DN 100 pipes)

450 360 350 mini

Brinell Surface Hardness in HB

220 245 260 maximum

The PAM ranges, being assembled and anchored, have successfully passed a high-pressure jetting test: cleaning pressure of 120 bar from the pump, which means 100 bar at the nozzle outlet, without leakage or misalignment.

EXTREM 1 is a one component product, red mat colour.EXTREM 1 is a one component product, red mat colour.EXTREM 1 is a one component product, red mat colour.

76

Saint-Gobain PAM • Head office Soil and Drain Business Unit

21, avenue Camille Cavallier54705 Pont-à-Mousson Cedex • FRANCE

Phone : +33 (0) 383 807 350www.pam-cast-iron.com

Dextra Pacific Plumbing LimitedSuite 1901, Tung Wai Commercial Building,

109 Gloucester Road, Wanchai • Hong KongEmail: dplplumbing@dextragroup.com

Tel : +852-2511 8236 • Fax : +852-2519 0852

Exclusive distributor for Hong Kong and Macau

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