BS EN 448:2009 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene
This European Standard specifies requirements and test methods for fittings of prefabricated thermally insulated
pipe-in-pipe assemblies comprising a steel service fitting from DN 20 to DN 1200, rigid polyurethane foam
insulation and an outer casing of polyethylene for use in directly buried hot water networks with preinsulated pipe
assemblies in accordance with EN 253.
This European Standard covers the following fittings: bends, T-pieces, reducers, single use compensators and
anchors.
This European Standard applies only to insulated fitting assemblies and single use compensators for continuous
operation with hot water at various temperatures in accordance with EN 253:2009, Clause 1.
This European Standard applies to fitting assemblies with a minimum design pressure of 16 bar (overpressure)
complying with EN 13941.
Guidelines for quality inspection are given in Annex A of this European Standard.
Procedures for PE-welding are given in Annex B of this European Standard.
NOTE This European Standard does not include rules for calculation of loads and stresses.
BS EN 448:2009 Referenced Document
EN 10253-2:2007 Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements*， 2024-04-19 Update
EN 12517-1 Non-destructive testing of welds - Part 1: Evaluation of welded joints in steel@ nickel@ titanium and their alloys by radiography - Acceptance levels
EN 12814-1 Testing of welded joints of thermoplastics semi-finished products - Part 1: Blend test (Incorporating Corrigendum September 2003)
EN 1289 AMD 1 Non-Destructive Testing of Welds - Penetrant Testing of Welds - Acceptance Levels Ratified European Text
EN 1290 Non-destructive examination of welds Magnetic particle examination of welds Includes Amendment A1: 2002 and A2:2003
EN 1291 Non-destructive testing of welds Magnetic particle testing of welds Acceptance levels Includes Amendments A1:2002 and A2:2003
EN 13941 Design and installation of preinsulated bonded pipe systems for district heating*， 2010-07-01 Update
EN 1418 Welding Personnel - Approval Testing of Welding Operators for Fusion Welding and Resistance Weld Setters for Fully Mechanized and Automatic Welding of Metallic Materials
EN 1435 Non-Destructive Testing of Welds - Radiographic Testing of Welded Joints Ratified European Text
EN 14419:2009 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Surveillance systems
EN 14870-1 Digital declaration of performances for hot rolled structural steel products. Part 1: Hot rolled products according to UNE-EN 10025-1:2006.*， 2023-06-07 Update
EN 253:2009 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene (Incorporates Amendment A1: 2013)
EN 287-1 Qualification test of welders - Fusion welding - Part 1: Steels Incorporating Corrigendum August 2004; Includes Amendment A2:2006
EN 489:2009 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Joint assembly for steel service pipes@ polyurethane thermal insulation and outer casing of polyethylene
EN 571-1 Non-Destructive Testing - Penetrant Testing - Part 1: General Principles
EN ISO 15607 Specification and qualification of welding procedures for metallic materials - General rules (ISO 15607:2019)*， 2019-10-23 Update
EN ISO 5817 Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections (ISO 5817:2023)*， 2023-03-15 Update
EN ISO 8501-1 Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel subtrates after overall removal of previous
EN ISO 9692-1:2003 Welding and allied processes Recommendations for joint preparation Part 1: Manual metal-arc welding, gas-shielded metal-arc welding, gas welding, TIG welding and beam welding of steels ISO 9692-1: 2003;*， 2024-04-19 Update
ISO 17636 Non-destructive testing of welds - Radiographic testing of fusion-welded joints
BS EN 448:2009 history
2019BS EN 448:2019 District heating pipes. Bonded single pipe systems for directly buried hot water networks. Factory made fitting assemblies of steel service pipes, polyurethane thermal insulation and a casing of polyethylene
2015BS EN 448:2015 District heating pipes. Preinsulated bonded pipe systems for directly buried hot water networks. Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene
2009BS EN 448:2009 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene
2003BS EN 448:2003 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene