BS EN 10217‑7:2021 pdf download.Welded steel tubes for pressure purposes — Technical delivery conditions.
3 Terms and definitions For the purpose of this document, the terms and definitions given in EN 10020:2000, EN 10021:2006, EN ISO 4885:2018 and EN 10266:2003 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia.org/ — ISO Online browsing platform: available at https://www.iso.org/obp
3.1 test category classification that indicates the extent and level of inspection and testing
3.2 employer organization for which a person works on a regular basis Note 1 to entry: The employer may be either the tube manufacturer or supplier or a third party organization providing non-destructive testing (NDT) services.
4 Symbols For the purpose of this document, the symbols given in EN 10266:2003 and the following apply. — TC test category. NOTE See also Table 2 for symbols of the delivery condition.
6 Information to be supplied by the purchaser
6.1 Mandatory information
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 term “tube”;
c) the dimensions (outside diameter D and wall thickness T) (see 8.8.1);
d) the designation of the steel grade according to this document (see 5.2);
e) the test category (see 9.3).
6.2 Options
A number of options are specified in this document and these are listed below. In the event that the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order,the tube shall be supplied in accordance with the basic specification (see 6.1).
1) Information about steelmaking process (see 7.1);
2) Tube manufacturing process and/or route (see 7.2.1);
3) The inside weld is remelted (see Table 1);
4) The inside weld is worked by rolling, remelting or grinding (see Table 1);
5) Delivery condition (see 7.2.3);
6) Product analysis (see 8.2.2);
7) Additional verifications of mechanical properties on samples that have undergone a different or additional heat treatment (see 8.3.1);
8) Verification of impact energy at room temperature (see 8.3.1);
9) Verification of proof strength R p0,2 or R p1,0 at elevated temperatures (see 8.3.2);
10) Verification of impact energy at low temperature (see 8.3.3);
11) Intergranular corrosion test (see 8.4);
12) Repair welding (see 8.5.1.5);
13) Selection of method for verification of leak-tightness test method (see 8.5.2.2);
14) Non-destructive testing of tube ends for detection of laminar imperfections (see 8.5.2.3);
15) Non-destructive testing of strip and plate edges for detection of laminar imperfections (see 8.5.2.3);
16) Special ends preparation (see 8.7);
17) Exact lengths (see 8.8.3);
18) Tolerance class D 4 for D ≤ 168,3 mm (see Table 10);
19) The type of inspection certificate 3.2 in place of the standard document (see 9.2.1);
20) Transverse tensile test on the weld (see 10.2.2.3);
21) Test pressure for hydrostatic leak-tightness test (see 11.8.1);
22) Wall thickness measurement away from the ends (see 11.9);
23) Selection of non- destructive testing method for the inspection of the weld seam (see Table 16);
24) Image quality class B of EN ISO 10893-6 for the radiographic inspection of the weld seam (see
Table 16);BS EN 10217‑7 pdf download.