Strojírenství

Oblast zaměření: Litinové tvarovky
Komise : CEN/TC 203 (Cast iron pipes, fittings and their joints)
Původce: CEN
K připomínkám do: 10.02.2022
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This document specifies the evaluation method of life cycle cost (LCC) and Life cycle assessment (LCA) of ductile iron pipes and fittings used for water applications

Informative annexes are included in this document as a compilation of references, consensual factors, and scenarios with different DI pipelines.

Oblast zaměření: Litinové tvarovky
Komise : CEN/TC 203 (Cast iron pipes, fittings and their joints)
Původce: CEN
K připomínkám do: 10.02.2022
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This document defines the requirements and test methods applicable to factory applied cement mortar coatings for the external corrosion protection of ductile iron pipes conforming to EN 545, EN 598 and EN 969 for use at operating temperatures up to 50 °C.

NOTE          Coatings according to this document are suitable for soils of all common corrosion loads and trenchless applications.

Special activities on site such as joint protection, tapping, clamping, etc. could affect the corrosion protection properties of the cement mortar coating. These operations should be covered in the laying instructions supplied by the manufacturers of pipes, clamps, house connection saddles, etc. and any relevant users' procedures. Such instructions are not part of this document.

Oblast zaměření: Příruby
Komise : CEN/TC 74 (Flanges and their joints)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 10.02.2022
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This document specifies requirements for Class designated circular flanges for pipes, valves, fittings and accessories made from aluminium alloy in the range of DN 15 to DN 600 (NPS 1/2 to NPS 24) and Class 150 to Class 300 (see Table 1).

This document specifies the types of flanges and their facings, dimensions and tolerances, bolt sizes, surface finish of jointing faces, marking and materials together with associated pressure temperature (p/T) ratings.

The flanges are intended to be used for piping as well as for pressure vessels.

Oblast zaměření: Příruby
Komise : CEN/TC 74 (Flanges and their joints)
Původce: CEN
K připomínkám do: 17.02.2022
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This document specifies requirements for circular copper alloy flanges and copper alloy collars combined with loose steel plate flanges in PN designations from PN 6 to PN 40 and nominal sizes from DN 10 to DN 1800 in the types shown in Table 1.

This document also specifies dimensions and tolerances, materials and their associated pressure/temperature (p/T) ratings, flange facings and related surface finish, weld repairs, and marking, together with information on bolting, gaskets, application/installation and approximate flange masses.

The flanges specified, with the exception of integral (type 21) flanges, are for attachment to copper or copper alloy tubes in accordance with EN 12449.

NOTE 1       When the flanges specified in this document are required for use with copper or copper alloy tubes to EN 1057 in those tube diameters which are different to EN 12449, this should be agreed between the equipment manufacturer and the flange manufacturer.

NOTE 2       The size of copper and copper alloy tubes is designated by reference to the outside diameter in millimetres.

NOTE 3       See also Annex B.

NOTE 4       Non-gasketed pipe joints are outside the scope of this document.

Table 1 — Types of flanges and collars

Type no.

Description

01

Plate flange in copper alloy for brazing or welding

02

Loose plate flange in steel with a plate collar (type 32) in copper alloy, for brazing or welding.

04

Loose plate flange in steel with a weld-neck collar (type 34) in copper alloy, for welding.

05

Blank flange in copper alloy.

05C

Blank flange in steel clad with a copper alloy jointing face.

07

Loose plate flange in steel with a slip-on collar (type 37) in copper alloy, for soft soldering, brazing or welding.

11

Weld-neck flange in copper alloy for welding.

12

Hubbed slip-on flange in copper alloy, for soft soldering, brazing or welding.

14

Hubbed slip-on flange in copper alloy supplied with tube stops, for soft soldering, brazing or welding.

21

Integral flange in copper alloy as part of some other equipment or component

32

Plate collar in copper alloy

34

Weld-neck collar in copper alloy.

37

Slip-on collar in copper alloy.

 

 







Type 01

Plate flange in copper alloy for brazing or welding

Type 02, 32

Loose plate flange in steel with a plate collar (type 32) in copper alloy for brazing and welding

Type 04, 34

Loose plate flange in steel with a weld-neck collar (type 34) in copper alloy for welding







Type 05, 05C

05 Blank flange in copper alloy 05C Blank flange in steel clad with a copper alloy jointing face

Type 07, 37

Loose plate flange in steel with a slip-on collar (type 37) in copper alloy, for soft soldering, brazing or welding

Type 11

Weld-neck flange in copper alloy for welding







Type 12

Hubbed slip-on flange in copper alloy, for soft soldering, brazing or welding

Type 14

Hubbed slip-on flange in copper alloy supplied with tube stops, for soft soldering, brazing or welding

Type 21

Integral flange in copper alloy as part of some other equipment or component

 

Key



Copper alloy component



Steel component

Oblast zaměření: Příruby
Komise : CEN/TC 74 (Flanges and their joints)
Původce: CEN
K připomínkám do: 17.02.2022
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combined with loose steel plate flanges in Class designations Class 150 and Class 300 and nominal sizes from DN 10 to DN 900 (NPS 1/2 to NPS 36) in the types shown in Table 1.

This document also specifies dimensions and tolerances, materials and their associated pressure/temperature (p/T) ratings, flange facings and related surface finish, weld repairs and marking together with information on bolting, gaskets, application and installation and approximate flange masses.

The flanges specified, with the exception of integral (type 21) flanges, are for attachment to copper or copper alloy tubes in accordance with EN 12449.

NOTE 1       The size of copper and copper alloy tubes is designated by reference to the outside diameter in millimetres.

NOTE 2       See also Annex B.

NOTE 3       Non-gasketed pipe joints are outside the scope of this document.

Table 1 — Types of flanges and collars

Type No.

Description

01

Plate flange in copper alloy for brazing or welding

04

Loose plate flange in steel with a weld-neck collar (type 34) in copper alloy, for welding

05

Blank flange in copper alloy

05C

Blank flange in steel clad with a copper alloy jointing face

07

Loose plate flange in steel with a slip-on collar (type 37) in copper alloy, for soft soldering, brazing or welding

11

Weld-neck flange in copper alloy for welding

12

Hubbed slip-on flange in copper alloy, for soft soldering, brazing or welding

14

Hubbed slip-on flange in copper alloy supplied with tube stops, for soft soldering, brazing or welding

21

Integral flange in copper alloy as part of some other equipment or component

34

Weld-neck collar in copper alloy

37

Slip-on collar in copper alloy

 

 







Type 01

Plate flange in copper alloy for brazing or welding

Type 04, 34

Loose plate flange in steel with a weld-neck collar(type 34) in copper alloy, for welding

Type 05, 05C

05 Blank flange in copper alloy

05C Blank flange in steel clad with a copper alloy jointing face







Type 07, 37

Loose plate flange in steel with a slip-on collar (type 37) in copper alloy, for soft soldering, brazing or welding

Type 11

Weld-neck flange in copper alloy for welding

Type 12

Hubbed slip- on flange in copper alloy, for soft soldering, brazing or welding





 

Type 14

Hubbed slip-on flange in copper alloy supplied with tube stops, for soft soldering, brazing or welding

Type 21

Integral flange in copper alloy as part of some other equipment or component

 

 

Key



Steel component



Copper alloy component