gaflon tech info 201213-rev0
TRANSCRIPT
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
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Relationship between SDR values and nominal pressure (PN)
In the Europeanised German Industrial Standards DIN 8074/8075 (PE) and DIN 8077/8078 (PP)
and the application-oriented DIN-EN and ISO standards being introduced, various safety factors lead to different values for the nominal pressure (PN) for a given geometry, i.e. the ratio of outside diameter to wall thickness (SDR). This table is meant to demonstrate these correlations. In practice, the safety factor can be set according to the requirements of the application. For segment welded fittings, a coefficient for the loss of strength, depending on the design, may be needed.
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
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MATERIAL PROPERTIES
Chemical resistance
The polyolefines PE-HD and PP exhibit a very similar chemical resistance. They are resistant against diluted solutions of salts, acids, and alkalis.
Up to 60° C, these materials may be used with a range of different solvents. At high temperatures, they are dissolved by aromatic and halogenated carbohydrates.
PVC pipes are resistant to diluted and concentrated acids and bases, mineral and vegetable oils, alcohol and aliphatic carbohydrates. Aromatic hydrocarbons and chlorohydrocarbons like esters and ketones dissolve PVC.
PVDF is resistant to most inorganic chemicals, acids, salts, and alkalis, even in high concentrations and at elevated temperatures. Stability against aliphatic and aromatic hydrocarbons, organic acids, alcohols, and aromatics is excellent. Some ketones, hot, highly concentrated alkalis, smoking sulphuric acid, amines, and pyridine attack PVDF. Dimethyl formamide and dimethyl acetamide dissolve PVDF.
In choosing the appropriate material for a specific project, the chemical resistance needs to be considered. It depends on the :
• Medium,
• Concentration,
• Temperature,
• manufacturing conditions of the finished piece, and
• the load.
The chemical resistance must be consulted for proper specification of the pipeline material
according to the composition of fluid.
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
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OVERVIEW OF APPLICATIONS
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
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MATERIAL DATA
Polyethilene PE100 :
For some time materials for pipe manufacture with a much improved creep resistance have been available – the new high-performance grades of polyethylene in service class PE 100.
PE 100 signifies a PE-HD with a creep strain increment σ v20°C, 50a determined in a creep test and amounting to at least 10 N/mm². In the test the creep behaviour of the material is established assuming the following conditions: life 50 years, thermal load 20°C and water as the test medium. Owing to the higher performance of the pipe material not only has creep strength been improved but also other properties such as resistance to crack growth and mechanical strength. The Special Advantages of PE 100 :
• Higher resistance to internal pressure
• High resistance to stress cracks
• Higher notch insensitivity
• Exceptionally high resistance to crack propagation.
The PE 100 pipes not only feature higher creep strength but also higher mechanical strength and higher resistance to crack growth. This means that at a higher service pressure the same wall thickness can be used, or if service pressure is the same, wall thickness can be reduced. In critical applications, for example, if service pressure and wall thickness are the same, using PE 100 instead of PE 80 can increase the safety factor.
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
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The relevant characteristics of PE 100 :
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
6
The properties of PE 100 :
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
7
The internal pressure creep curves of PE100 pipes :
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
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Polypropylene PP-H 100, PP-B 80 and PP-R 80
PP pressure pipes are particularly used in the field of drinking water pressure pipes and industrial pipework. The material, polypropylene, has excellent resistance to many acids, alkalis and solvents.
The PP range of pipes is supplemented by an extensive range of fittings with elongated spigots for butt welding and fittings with short spigots for butt welding and socket welding. To connect up to pipe systems made of other materials such as PE 100 and anothers we offer you fittings for flange assemblies. The relevant characteristics of PP :
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
9
The properties of PP-H 100 :
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
10
The internal pressure creep curves of PP-H 100 pipes :
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
11
The properties of PP-B 80 :
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
12
The internal pressure creep curves of PP-B 80 pipes :
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
13
The properties of PP-R 80 :
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
14
The internal pressure creep curves of PP-R 80 pipes :
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
15
PVDF :
As a fluoroplastic PVDF is resistant to most inorganic chemicals such as acids and salts – even in high concentrations – and can be used across a wide range of temperatures. Compared with other fluoroplastics PVDF offers advantages in many applications on account of its easy installation, excellent mechanical properties, flame resistance, low specific weight and the resulting benefits in terms of cost.
The material, polyvinylidene fluoride (PVDF), is particularly suitable for use in industrial pipework construction. The excellent resistance to virtually all chemicals makes PVDF the ideal material for pipework systems transporting corrosive media. The range of pipes is rounded off by fittings with short and elongated spigots for the various types of connection and by an extensive range of valves. The relevant characteristics of PVDF :
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
16
The properties of PVDF :
TECH_INFO Ref.2012-01/2013-Rev.0
PLASTICS PIPELINES
Materials and applications characteristics
Via Anchieta, 700 – Bairro Sacomã – CEP.: 04246-000 – São Paulo – SP.Fone / Fax.: (11) 3459-2324 - E-mail: [email protected] – Site: www.gaflon.com.br
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The internal pressure creep curves of PVDF pipes :
Bibliography : SIMONA AG