Steel Tube Handbook - 2018

36 Seamless boiler steel tubes for pressure equipments (low temperature) EN 10 216 - 4 Seamless steel tubes for pressure purposes. TDC. Part 4: Non-alloy and alloy steel tubes with specified low temperature properties. DIN 2391-1 Seamless precision steel tubes. Part 1: Dimensions. DIN 2448 Plain end seamless steel tubes. Dimensions. DIN 17173 Seamless circular steel tubes for low temperatures. TDC. DIN 28180 Seamless steel tubes for tubular heat exchangers. Dimensions, tolerances, materials. BS 3600 Dimension and masses per unit lengt of welded and seamless steel pipes and tubes for pressure purposes. BS 3603 Carbon and alloy steel pipes and tubes with specified low temperature properties for pressure purposes. NFA 49-215 Seamless tubes for ferritic non alloy and alloy steel heat exchangers. Dimensions. TDC. List of dimensional standards and technical delivery conditions standards Stan- dards Dimensions Dimensional standards Dimensional range Tolerance D Tolerance T Lengths Straightness Tube ends EN 10216-4 Table 5/Page 40 Hot finished: D ≤ 219,1 mm ±1 % min ±0,5 mm Cold finished: ±0,5 % min ±0,3 mm D ≤ 219,1 mm ±12,5 % min ±0,4 mm ±10 % min ±0,2 mm Kinds: • random • exact Informative values: • D < 60,3 mm 5–6 m • D ≥ 60,3 mm / T < 7,1 mm 5–6 m or 10–14 m • D ≥ 60,3 mm / T ≥ 7,1 mm 5–6 m • longer upon agreement Exact length tolerances:  • L < 6 m 0 +10 mm • L = 6–12 m 0 +15 mm • L > 12 m + upon agreement – 0 Permissible 0,0015.L for tube conversion to 1 m max. 3 mm • square cut ends • free from excessive burrs • option: with beveled ends 10305-1 upon agreement Table 25/Page 69 Cold finished - precision See page 62 a 65 DIN 2448 Table 5/Page 40 D ≤ 100 mm ±1 % min ±0,5 mm D = 100–200 mm ±1 % D < 130 mm • T ≤ 2Tn –10 % +15 % • 2Tn<T<4Tn –10% +12,5% • T > 4Tn ±9 % Tn – basic wall thickness according to DIN 2448 Kinds: • random • fixed ±500 mm • exact Informative values: • D < 60,3 mm 5–6 m • D ≥ 60,3 mm / T < 7,1 mm 5–6 m or 10–14 m • D ≥ 60,3 mm / T ≥ 7,1 mm 5–6 m • longer upon agreement Precise length tolerances: like EN • visually straight • upon agreement 2391-1 upon agreement Table 25/Page 69 Cold finished - precision See page 62 a 65 BS 3600 Table 5/Page 40 Hot finished: ±1 % min ±0,5 mm Cold finished: ±0,75 % min ±0,5 mm ≤ 3 %D ±15 % 3–10 %D ±12,5 % ±7,5 % • random • exact with tolerances:  L ≤ 6 m 0 +6 mm L > 6 m 1,5 mm/m, max 12 mm NF A 49-215 D ≤ 20 mm ±0,10 mm D = 20–38 mm ±0,15 mm D = 38–50 mm ±0,25 mm D > 50 mm ±0,30 mm ±9 % min ±0,20 mm upon agreement 0 +18% Exact with tolerances:  L ≤ 6 m 0 +3 mm L = 6–9 m 0 +4,5 mm L = 9–12 m 0 +6 mm L = 12–15 m 0 +7,5 mm L = 15–18 m 0 +9 mm • Locally 3 mm/m • Total: L < 4 m 2 mm/m L = 4–6 m 8 mm/m L > 6 m 8 mm +1 mm/m • square cut ends • free from excessive burrs  HF production facilities to 12,7 m + 50 mm (30 mm), over 12,7 m + 100 mm