![header thumbnail](/images/img-default-logo.png)
EN 13941:2009+A1:2010
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
![header thumbnail](/images/img-default-logo.png)
Design and installation of preinsulated bonded pipe systems for district heating
10-06-2019
14-07-2010
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions, units and symbols
4 General considerations for system design
5 Components and materials
6 Actions and limit states
7 Installation
Annex A (normative) - Design of piping components under
internal pressure
Annex B (informative) - Geotechnics and pipe-soil interaction
Annex C (informative) - Global- and cross sectional analysis
Annex D (informative) - Calculation of heat losses
Annex E (informative) - National A-deviations
Bibliography
This European Standard specifies rules for design, calculation and installation for preinsulated bonded pipe systems for buried hot water distribution and transmission networks (cf. Figure 2) with pipe assemblies in accordance with EN 253, for continuous operation with hot water at various temperatures up to 120ºC and occasionally with peak temperatures up to 140ºC and maximum internal pressure 25 bar (overpressure).Application rule:For larger pipe dimensions and pressures below 25 bar wall thickness bigger than specified in EN 253 can be required for straight pipes, bends and tees.The principles of the standard can be applied to preinsulated pipe systems with pressures higher than 25 bar, provided that special attention is paid to the effects of pressure. Adjacent pipes belonging to the network (e.g. pipes in ducts, valve chambers, road crossings above ground etc.) can be designed and installed according to this standard.The standard assumes use of treated water, which by softening, demineralisation, deaeration, adding of chemicals, or otherwise has been treated to prevent internal corrosion and deposits in the pipes.This standard is not applicable for such units as:a)pumps,b)exchangers,c)boiler installations, tank installations,d)consumer installations.However, the full functional ability and durability of such units should be ensured in consideration of the impacts from the district heating system and other impacts occurring from the conditions under which they have been installed.Guidelines for product quality inspection and in situ tests of joints are given in Annex A of EN 448:2009, Annex D of EN 253:2009, Annex A of EN 488:2009 and Annex B of EN 489:2009.Guidelines for welding of polyethylene casing are given in Annex B of EN 448:2009.The estimation of expected life with continuous operation at various temperatures is outlined in Annex B of EN 253:2009.
Committee |
CEN/TC 107
|
DevelopmentNote |
2009 Edition Re-Issued in July 2010 & incorporates AMD 1 2010. (07/2010) Supersedes PREN 13941. (11/2010)
|
DocumentType |
Standard
|
PublisherName |
Comite Europeen de Normalisation
|
Status |
Superseded
|
SupersededBy | |
Supersedes |
Standards | Relationship |
DIN EN 13941:2003-10 | Identical |
NF EN 13941 : 2009 + A1 2010 | Identical |
NS EN 13941 : 2009 + A1 2010 | Identical |
NEN EN 13941 : 2009 + A1 2010 | Identical |
UNI EN 13941 : 2011 | Identical |
NBN EN 13941 : 2009 + A1 2010 | Identical |
SN EN 13941 : 2009 + A1 2010 | Identical |
PN EN 13941 : 2009 + A1 2010 | Identical |
I.S. EN 13941:2009 | Identical |
BS EN 13941 : 2009 | Identical |
DIN EN 13941:2010-12 | Identical |
UNE-EN 13941:2009+A1:2010 | Identical |
PNE-EN 13941:2009/FprA1 | Identical |
BS EN 13941:2009+A1:2010 | Identical |
14/30294476 DC : 0 | BS EN 448 - 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 |
DIN EN 15698-2 E : 2015 | DISTRICT HEATING PIPES - PREINSULATED BONDED TWIN PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - PART 2: FITTING AND VALVE ASSEMBLY OF STEEL SERVICE PIPES, POLYURETHANE THERMAL INSULATION AND OUTER CASING OF POLYETHYLENE |
09/30197069 DC : 0 | BS EN 488 - DISTRICT HEATING PIPES - PREINSULATED BONDED PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - STEEL VALVE ASSEMBLY FOR STEEL SERVICE PIPES, POLYURETHANE THERMAL INSULATION AND OUTER CASING OF POLYETHYLENE |
13/30291075 DC : 0 | BS EN 15698-2 - DISTRICT HEATING PIPES - PREINSULATED BONDED TWIN PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - PART 2: FITTING AND VALVE ASSEMBLY OF STEEL SERVICE PIPES, POLYURETHANE THERMAL INSULATION AND OUTER CASING OF POLYETHYLENE |
UNE-EN 13480-6:2017 | Metallic industrial piping - Part 6: Additional requirements for buried piping |
BS EN 15698-2:2015 | District heating pipes. Preinsulated bonded twin pipe systems for directly buried hot water networks Fitting and valve assembly of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene |
I.S. EN 14419:2009 | DISTRICT HEATING PIPES - PREINSULATED BONDED PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - SURVEILLANCE SYSTEMS |
I.S. EN 488:2015 | DISTRICT HEATING PIPES - PREINSULATED BONDED PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - STEEL VALVE ASSEMBLY FOR STEEL SERVICE PIPES, POLYURETHANE THERMAL INSULATION AND OUTER CASING OF POLYETHYLENE |
I.S. 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 |
I.S. 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 |
BS 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 |
BS EN 14419:2009 | District heating pipes. Preinsulated bonded pipe systems for directly buried hot water networks. Surveillance systems |
07/30160790 DC : 0 | BS EN 15632-1 - DISTRICT HEATING PIPES - PRE-INSULATED FLEXIBLE PIPE SYSTEMS - PART 1: CLASSIFICATION, GENERAL REQUIREMENTS AND TEST METHODS |
14/30294473 DC : 0 | BS EN 488 - DISTRICT HEATING PIPES - PREINSULATED BONDED PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - STEEL VALVE ASSEMBLY FOR STEEL SERVICE PIPES, POLYURETHANE THERMAL INSULATION AND OUTER CASING OF POLYETHYLENE |
DIN EN 15698-2:2015-11 | DISTRICT HEATING PIPES - PREINSULATED BONDED TWIN PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - PART 2: FITTING AND VALVE ASSEMBLY OF STEEL SERVICE PIPES, POLYURETHANE THERMAL INSULATION AND OUTER CASING OF POLYETHYLENE |
07/30153360 DC : 0 | BS EN 489 - 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 |
BS EN 15632-1 : 2009 | DISTRICT HEATING PIPES - PRE-INSULATED FLEXIBLE PIPE SYSTEMS - PART 1: CLASSIFICATION, GENERAL REQUIREMENTS AND TEST METHODS |
I.S. EN 13480-6:2017 | METALLIC INDUSTRIAL PIPING - PART 6: ADDITIONAL REQUIREMENTS FOR BURIED PIPING |
BS 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 |
07/30168488 DC : 0 | BS EN 253 - 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 |
I.S. EN 15632-4:2009 | DISTRICT HEATING PIPES - PRE-INSULATED FLEXIBLE PIPE SYSTEMS - PART 4: BONDED SYSTEM WITH METAL SERVICE PIPES; REQUIREMENTS AND TEST METHODS |
EN 13480-6:2017 | Metallic industrial piping - Part 6: Additional requirements for buried piping |
DIN EN 448:2016-02 | 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 |
DIN EN 488:2016-02 | DISTRICT HEATING PIPES - PREINSULATED BONDED PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - STEEL VALVE ASSEMBLY FOR STEEL SERVICE PIPES, POLYURETHANE THERMAL INSULATION AND OUTER CASING OF POLYETHYLENE |
I.S. 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 488:2015 | District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Steel valve assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene |
UNI 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 |
UNI EN 1993-4-3 : 2007 | EUROCODE 3 - DESIGN OF STEEL STRUCTURES - PART 4-3: PIPELINES |
UNI EN 14419 : 2009 | DISTRICT HEATING PIPES - PREINSULATED BONDED PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - SURVEILLANCE SYSTEMS |
UNE-EN 15632-1:2010 | District heating pipes - Pre-insulated flexible pipe systems - Part 1: Classification, general requirements and test methods |
UNE-EN 15632-4:2010 | District heating pipes - Pre-insulated flexible pipe systems - Part 4: Bonded system with metal service pipes; requirements and test methods |
07/30165568 DC : 0 | BS EN 448 - 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 |
BS EN 13480-6:2017 | Metallic industrial piping Additional requirements for buried piping |
I.S. EN 15698-2:2015 | DISTRICT HEATING PIPES - PREINSULATED BONDED TWIN PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - PART 2: FITTING AND VALVE ASSEMBLY OF STEEL SERVICE PIPES, POLYURETHANE THERMAL INSULATION AND OUTER CASING OF POLYETHYLENE |
DIN EN 253:2015-12 | 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 |
DIN EN 489:2009-07 | 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; German and English version EN 489:2009 |
UNE-EN 488:2012 | District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Steel valve assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene |
BS EN 488:2015 | District heating pipes. Preinsulated bonded pipe systems for directly buried hot water networks. Steel valve assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene |
UNE-EN 448:2017 | 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 |
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 14419:2009 | District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Surveillance systems |
EN 253:2009+A2:2015 | 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 |
EN 15698-2:2015 | District heating pipes - Preinsulated bonded twin pipe systems for directly buried hot water networks - Part 2: Fitting and valve assembly of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene |
EN 15632-1:2009+A1:2014 (edition 2) | District heating pipes - Pre-insulated flexible pipe systems - Part 1: Classification, general requirements and test methods |
EN 15632-4:2009 | District heating pipes - Pre-insulated flexible pipe systems - Part 4: Bonded system with metal service pipes; requirements and test methods |
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 |
07/30160800 DC : 0 | BS EN 15632-4 - DISTRICT HEATING PIPES - PRE-INSULATED FLEXIBLE PIPE SYSTEMS - PART 4: BONDED METAL SERVICE PIPES - REQUIREMENTS AND TEST METHODS |
BS EN 15632-4:2009 | District heating pipes. Pre-insulated flexible pipe systems Bonded system with metal service pipes; requirements and test methods |
UNI EN 15632-4 : 2009 | DISTRICT HEATING PIPES - PRE-INSULATED FLEXIBLE PIPE SYSTEMS - PART 4: BONDED SYSTEM WITH METAL SERVICE PIPES - REQUIREMENTS AND TEST METHODS |
DIN EN 15632-1:2015-03 | District heating pipes - Pre-insulated flexible pipe systems - Part 1: Classification, general requirements and test methods (includes Amendment A1:2014) |
NF EN 15632-4 : 2010 | DISTRICT HEATING PIPES - PRE-INSULATED FLEXIBLE PIPE SYSTEMS - PART 4: BONDED SYSTEM WITH METAL SERVICE PIPES - REQUIREMENTS AND TEST METHODS |
BS 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 |
I.S. EN 15632-1:2009 | DISTRICT HEATING PIPES - PRE-INSULATED FLEXIBLE PIPE SYSTEMS - PART 1: CLASSIFICATION, GENERAL REQUIREMENTS AND TEST METHODS |
DIN EN 489:2003-05 | 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 |
ISO 3834-1:2005 | Quality requirements for fusion welding of metallic materials Part 1: Criteria for the selection of the appropriate level of quality requirements |
EN 444:1994 | Non-destructive testing - General principles for radiographic examination of metallic materials by X- and gamma-rays |
EN ISO 3834-3:2005 | Quality requirements for fusion welding of metallic materials - Part 3: Standard quality requirements (ISO 3834-3:2005) |
ENV 1991-3:1995/AC:1998 | EUROCODE 1 - BASIS OF DESIGN AND ACTIONS ON STRUCTURES - TRAFFIC LOADS ON BRIDGES |
EN ISO 3834-2:2005 | Quality requirements for fusion welding of metallic materials - Part 2: Comprehensive quality requirements (ISO 3834-2:2005) |
ASME B31.1 : 2016 | POWER PIPING |
EN 488:2015 | District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Steel valve assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene |
EN ISO 9692-2:1998/AC:1999 | WELDING AND ALLIED PROCESSES - JOINT PREPARATION - PART 2: SUBMERGED ARC WELDING OF STEELS |
ISO 3834-4:2005 | Quality requirements for fusion welding of metallic materials Part 4: Elementary quality requirements |
EN ISO 3834-4:2005 | Quality requirements for fusion welding of metallic materials - Part 4: Elementary quality requirements (ISO 3834-4:2005) |
ISO/TR 15608:2017 | Welding — Guidelines for a metallic materials grouping system |
EN 1714:1997/A2:2003 | NON-DESTRUCTIVE TESTING OF WELDS - ULTRASONIC TESTING OF WELDED JOINTS |
EN 1594:2013 | Gas infrastructure - Pipelines for maximum operating pressure over 16 bar - Functional requirements |
ISO 14731:2006 | Welding coordination Tasks and responsibilities |
EN 10216-2:2013 | Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties |
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 |
EN 473:2008 | Non-destructive testing - Qualification and certification of NDT personnel - General principles |
ISO 5817:2014 | Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) — Quality levels for imperfections |
ISO 15614-1:2017 | Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys |
EN 13480-3:2017 | Metallic industrial piping - Part 3: Design and calculation |
ISO 15609-1:2004 | Specification and qualification of welding procedures for metallic materials Welding procedure specification Part 1: Arc welding |
ISO 3834-2:2005 | Quality requirements for fusion welding of metallic materials Part 2: Comprehensive quality requirements |
EN 1289:1998/A2:2003 | NON-DESTRUCTIVE TESTING OF WELDS - PENETRANT TESTING OF WELDS - ACCEPTANCE LEVELS |
EN 10217-2:2002/A1:2005 | WELDED STEEL TUBES FOR PRESSURE PURPOSES - TECHNICAL DELIVERY CONDITIONS - PART 2: ELECTRIC WELDED NON-ALLOY AND ALLOY STEEL TUBES WITH SPECIFIED ELEVATED TEMPERATURE PROPERTIES |
EN 583-1:1998/A1:2003 | NON-DESTRUCTIVE TESTING - ULTRASONIC EXAMINATION - GENERAL PRINCIPLES |
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 ISO 14731:2006 | Welding coordination - Tasks and responsibilities (ISO 14731:2006) |
EN 10204:2004 | Metallic products - Types of inspection documents |
CEN/TR 1295-2:2005 | Structural design of buried pipelines under various conditions of loading - Part 2: Summary of nationally established methods of design |
EN ISO 15609-1:2004 | Specification and qualification of welding procedures for metallic materials - Welding procedure specification - Part 1: Arc welding (ISO 15609-1:2004) |
EN ISO 3834-1:2005 | Quality requirements for fusion welding of metallic materials - Part 1: Criteria for the selection of the appropriate level of quality requirements (ISO 3834-1:2005) |
EN 1712:1997/A2:2004 | NON-DESTRUCTIVE TESTING OF WELDS - ULTRASONIC TESTING OF WELDED JOINTS - ACCEPTANCE LEVELS |
ISO 3419:1981 | Non-alloy and alloy steel butt-welding fittings |
EN 13018:2016 | NON-DESTRUCTIVE TESTING - VISUAL TESTING - GENERAL PRINCIPLES |
ISO 9692-2:1998 | Welding and allied processes — Joint preparation — Part 2: Submerged arc welding of steels |
EN 1291:1998/A2:2003 | NON-DESTRUCTIVE TESTING OF WELDS - MAGNETIC PARTICLE TESTING OF WELDS - ACCEPTANCE LEVELS |
ISO 15607:2003 | Specification and qualification of welding procedures for metallic materials General rules |
EN 571-1:1997 | Non destructive testing - Penetrant testing - Part 1: General principles |
EN 253:2009+A2:2015 | 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 |
EN 1418:1997 | Welding personnel - Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials |
EN 970:1997 | Non-destructive examination of fusion welds - Visual examination |
EN 1290:1998/A2:2003 | NON-DESTRUCTIVE EXAMINATION OF WELDS - MAGNETIC PARTICLE EXAMINATION OF WELDS |
ISO 3834-3:2005 | Quality requirements for fusion welding of metallic materials Part 3: Standard quality requirements |
EN 25817 : 1992 | ARC WELDED JOINTS IN STEEL - GUIDANCE ON QUALITY LEVELS FOR IMPERFECTIONS |
EN 10253-2:2007 | Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements |
EN 10217-1:2002/A1:2005 | WELDED STEEL TUBES FOR PRESSURE PURPOSES - TECHNICAL DELIVERY CONDITIONS - NON-ALLOY STEEL TUBES WITH SPECIFIED ROOM TEMPERATURE PROPERTIES |
EN 10217-5:2002/A1:2005 | WELDED STEEL TUBES FOR PRESSURE PURPOSES - TECHNICAL DELIVERY CONDITIONS - PART 5: SUBMERGED ARC WELDED NON-ALLOY AND ALLOY STEEL TUBES WITH SPECIFIED ELEVATED TEMPERATURE PROPERTIES |
EN 1435:1997/A2:2003 | NON-DESTRUCTIVE TESTING OF WELDS - RADIOGRAPHIC TESTING OF WELDED JOINTS |
EN ISO 15607:2003 | Specification and qualification of welding procedures for metallic materials - General rules (ISO 15607:2003) |
EN 287-1:2011 | Qualification test of welders - Fusion welding - Part 1: Steels |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.