EN 10238:2009 – Automatically blast-cleaned and automatically prefabrication primed structural steel products
1 Scope
This European Standard specifies requirements for automatically blast-cleaned and automatically prefabrication primed structural steel products.
This European Standard does not cover manual blast cleaning and/or manual spray painting.
NOTE Where the steel is less than 5 mm thick, care should be exercised to ensure it is not deformed by blast cleaning.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 10021, General technical delivery conditions for steel products
EN 10025-2, Hot rolled products of structural steels – Part 2: Technical delivery conditions for non-alloy structural steels
EN 10025-3, Hot rolled products of structural steels – Part 3: Technical delivery conditions for normalized/normalized rolled weldable fine grain structural steels
EN 10204, Metallic products – Types of inspection documents
EN ISO 2808:2007, Paints and varnishes – Determination of film thickness (ISO 2808:2007)
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 substrates after overall removal of previous coatings (ISO 8501-1:2007)
EN ISO 8503-2, Preparation of steel substrates before application of paints and related products – Surface roughness characteristics of blast-cleaned steel substrates – Part 2: Method for the grading of surface profile of abrasive blast-cleaned steel – Comparator procedure (ISO 8503-2:1998)
EN ISO 17652-1:2003, Welding – Test for shop primers in relation to welding and allied processes – Part 1: General requirements (ISO 17652-1:2003)
EN ISO 17652-2:2003, Welding – Test for shop primers in relation to welding and allied processes – Part 2: Welding properties of shop primers (ISO 17652-2:2003)
EN ISO 17652-3:2003, Welding – Test for shop primers in relation to welding and allied processes – Part 3: Thermal cutting (ISO 17652-3:2003)
EN ISO 17652-4:2003, Welding – Test for shop primers in relation to welding and allied processes – Part 4: Emission of fumes and gases (ISO 17652-4:2003)
3 Definitions
For the purposes of this document, the following definitions apply:
3.1
automatic blast cleaning
use of mechanical plant where the product being blast-cleaned is passed through a machine where turbines are used to project the abrasive onto the steel in a uniform manner
3.2
automatic priming
After automatic blast cleaning, the product is primed by passing through a paint booth where reciprocating paint guns apply a continuous coating to the required thickness.
3.3
prefabrication primer
thin coating which is automatically applied to blast cleaned steel and serves to provide temporary corrosion protection for steel components during their processing, transport and storage
4 Information to be supplied by the purchaser
4.1 Mandatory information
The following information shall be supplied by the purchaser at the time of enquiry and order:
a) designation of the steel;
b) type of prefabrication primer (see 9.1 – table 1);
c) type of inspection document (clause 12).
4.2 Additional optional information
a) Preparation grade if different from Sa 2 ½ (clause 7);
b) surface roughness if specified (clause 8);
c) dry film thickness if different from that given in 9.1;
d) information on manufacturing process (clause 6);
e) flame cutting and weldability characteristics of prefabrication primers (clause 10);
f) special requirements for marking (clause 13);
EN 10238:2009 – Automatically blast-cleaned and automatically prefabrication primed structural steel products