BS 10305-3:2010 pdf download – Steel tubes for precision applications — Technical delivery conditions Part 3: Welded cold sized tubes 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 his wish to implement any of these options at the time of enquiry and order, the tubes shall be supplied in accordance with the basic specification (see 6.1). 1) specification of a steel grade not specified in this document (see 8.2); 2) suitability for hot-dip galvanizing (see 8.2); 3) surface condition for further processing (see 8.4.1); 4) removal of internal weld bead (see 8.4.2); 5) measurement of surface roughness (see 8.4.4); 6) specific surface roughness (see 8.4.4); 7) non-destructive testing of the weld seam for the detection of longitudinal imperfections (see 8.4.8); 8) non-destructive testing of the full tube circumference for the detection of longitudinal imperfections (see 8.4.8); 9) non-destructive testing for verification of leak-tightness (see 8.4.8); 10) specification of a procedure to test transverse welds for the detection of imperfections (see 8.4.8); 11) specification of a cross section other than circular (see 8.5.1.1); 12) reduced diameter tolerances (see 8.5.1.2); 13) unilateral diameter tolerance (see 8.5.1.2); 14) reduced wall thickness tolerance (see 8.5.1.3); 15) unilateral wall thickness tolerance (see 8.5.1.3); 16) another specified length and/or tolerance (see 8.5.2); 17) tolerance for exact lengths ≤ 500 mm or > 8 000 mm (see 8.5.2); 18) reduced maximum deviation from straightness (see 8.5.3); 19) specified end finishing (see 8.5.4); 20) inspection certificate 3.1 (see 9.1 and 9.2.1); 21) inspection certificates 3.2 (see 9.2.1); 22) flattening or drift expanding test for delivery condition +A or +N (see Table 9); 23) test unit with tubes from one cast only (see 10.1); 24) more restrictive requirement on flattening test (see 11.2); 25) alternative marking (see Clause 12); 26) delivery without corrosion protection (see Clause 13); 6.3 Example of an order 12 000 m tube with an outside diameter of 40 mm and a wall thickness of 1,5 mm in accordance with this document, made of steel grade E235 in the normalized condition, pickled, to be delivered in standard lengths of 6 m with an 3.1 inspection certificate in accordance with EN 10204. 12 000 m tubes – 40 x 1,5 – EN 10305-3 – E235+N, S2 – 6 m standard length – Option 20 7 Manufacturing process 7.1 Steelmaking process...
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