Steel Tube Handbook - 2018

26 Seamless boiler tubes for pressure equipments (high temperature) EN 10216-2 Seamless steel tubes for pressure purposes. TDC. Part 2: Non-alloy and alloy steel tubes with speci- fied elevated temperature properties. DIN 2391-1 Seamless precision steel tubes. Part 1: Dimensions. DIN 2448 Plain end seamless steel tubes. Dimensions. DIN 17175 Seamless steel tubes for elevated temperatures. BS 3059-1 Steel boiler and superheater tubes. Specification for low tensile carbon steel tubes without speci- fied elevated temperature properties. BS 3059-2 Specification for carbon, alloy and austenitic steel tubes with specified elevated temperature pro- perties. BS 3600 Dimensions and masses per unit lenght of se- amless and welded steel pipes and tubes for pres- sure purposes. BS 3602-1 Steel pipes and tubes for pressure purposes: car- bon and carbon manganese steel with specified elevated temperature properties. Part 1: Specifi- cation for seamless and electric resistance wel- ded (including induction welded) tubes. List of dimensional standards and technical delivery conditions standards Standards Dimensions Dimensional standards Dimensional range Tolerance D Tolerance T Lengths Straightness Tube ends EN 10216-2 10305-1 upon agreement Table 5/Page 40 Table 25/Page 69 Outside diameter D ±1 % min ±0,5 mm ±12,5 % (D ≤ 219,1 mm) min ±0,4 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 (22–24 m) upon agreement Exact length tolerances:  • L < 6 m 0 +10 mm • L = 6–12 m 0 +15 mm • L > 12 m + upon agreement Allowed 0,0015.L on tube calculated to 1 m max. 3 mm • square cut ends • free from excessive burrs • option: with beveled ends (see page 98) Outside diameter D ±1 % min ±0,5 mm T min +28 % (D ≤ 219,1 mm) min +0,8 mm Inside diameter d or d min • see article 8.7.4.1 of standard • delivery upon agreement only Wall thickness T Inside diameter d or d min • see article 8.7.4.1 of standard • delivery upon agreement only Wall thickness T min Cold finished: ±0,5 % min ±0,3 mm ±10 % min ±0,2 mm Cold finished - precision: see Page 62 - 65 Cold formed – precision See page 62 - 65 DIN 2448 2391-1 upon agreement Table 5/Page 40 Table 25/Page 69 D < 100 mm ±0,75 % min ±0,5 mm D = 100–320 mm ±0,90 % 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 Exact length tolerances: like EN Visually straight • square cut ends • free from excessive burrs Cold finished: D < 120 mm ±0,6 % min ±0,25 mm D > 120 mm ±0,75 % according to DIN 2391-1 Cold formed – precision See page 62 - 65 BS 3059-1 Table 5/Page 40 Hot finished (HFS): ±1 % min ±0,5 mm ±12,5 % • random • exact with tolerances:  L ≤ 6 m 0 +3 mm L > 6 m 1,5 mm/m, max 12,5 mm Visually straight • square cut ends • free from excessive burrs Cold finished (CFS): ±0,5 % min ±0,10 mm ±7,5 % 3059-2 Class S1: ±0,5 % min ±0,10 mm Class S2: ±0,75 % min ±0,30 mm (Cold finished) ±7,5 % ±10 % 3602-1 3604-1 Hot finished (HFS): ±1 % min ±0,5 mm T/D = 3 % ±15 % T/D = 3–10% ±12,5 % T/D > 10 % ±12,5 % (D < 168,3 mm) Cold finished (CFS): ±0,75 % min ±0,50 mm ±7,5 %  HF production facilities to 12,7 m + 50 mm (30 mm), over 12,7 m + 100 mm

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