EN 39:2001

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and designation
   4.1 Classification
   4.2 Designation
5 Information to be supplied by the purchaser
   5.1 Mandatory information
   5.2 Options
   5.3 Examples of ordering
6 Manufacturing process
   6.1 Steelmaking process
   6.2 Tube manufacture
7 Requirements
   7.1 General
   7.2 Chemical composition and mechanical properties
   7.3 Appearance
   7.4 Straightness
   7.5 External weld bead and preparation of ends
   7.6 Dimensions, mass and tolerances
8 Inspection
   8.1 Type of inspection
   8.2 Inspection documents
   8.3 Summary of inspection and testing
9 Sampling
   9.1 Frequency of tests
   9.2 Preparation of samples and test pieces
10 Test Methods
   10.1 Tensile test
   10.2 Flattening test
   10.3 Visual examination
   10.4 Dimensional inspection
11 Retests, sorting and reprocessing
12 Marking
13 Coating
Annex A (informative) Values for design of structures
Bibliography

This European Standard specifies the requirements for non-alloy steel tubes for use with EN 74 couplers in the construction of falsework and working scaffolds. It includes detailed requirements for marking to aid long term identification, for protective coating by reference to European and International Standards, and for inspection and testing.NOTE 1: Tubes to this European Standard, which have a specified outside diameter of 48,3 mm and specified thickness of 3,2 mm or 4,0 mm, may also be used in conjunction with other sizes and grades of steel tubes for applications such as prefabricated scaffolds.NOTE 2: The use of these tubes should be in accordance with appropriate International and national requirements, for example prEN 12811 and prEN 12812.