EN 39 Steel tubes for scaffolding

1. Scope
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 3.2mm or 4.0mm, 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 should be in accordance with appropriate International and national requirements, for example prEN 12811 and prEN 12812.

2. Information to be supplied by the purchaser
The following information shall be supplied by the purchaser at the time of enquiry and order:
a) the quantity (mass or total length or number);
b) the number of this European Standard (EN 39);
c) the type (3 or 4) or specified wall thickness (mm)
d) the standard length required.
e) the options required

3. Examples of ordering
EXAMPLE 1 One thousand tubes in accordance with EN 39 with a specified wall thickness of 3.2mm (type 3) in 6.0 meter standard lengths, supplied bare and with temporary corrosion protection.
1000 tubes - EN 39 - 3.2 - 6.0 - Options 8 and 9.

EXAMPLE 2 48 tonnes of tube in accordance with EN 39 type 4 (4.0mm specified wall thickness), supplied in 6.4 meter standard lengths and with an inspection document 2.2 according to EN 10204 provided.
48 tonnes tube - EN 39 - 4 - 6.4 - Option 6 - 2.2.

4. Chemical Composition
Steel Name S235GT
Steel number 1.0106
C. 0.20 max.
Mn. 1.40 max.
P. 0.040 max.
S. 0.045 max.
Al. 0.020 min.

5. Mechanical Properties
Steel Name S235GT
Yield Strength 235Mpa min.
Tensil Strength 340/520 Mpa min.
Elongationi 24% min.

6. Dimensions , mass and tolerance, please see details in original EN 39.