Steel Tube Handbook - 2018

22 Seamless steel tubes for pressure equipments for room temperatures EN 10216-1 Seamless steel tubes for pressure purposes. TDC. Part 1: Non-alloy steel tubes with specified room temperature properties. DIN 1629 Seamless circular tubes of non-alloy steel with special quality requirements. TDC. DIN 1630 Seamless circular tubes of non-alloy steel with very high quality requirements. TDC. DIN 2448 Plain end seamless steel tubes. Dimensions. BS 3600 Dimension and masses per unit lengt of welded and seamless steel pipes and tubes for pressure purposes. BS 3601 Carbon steel pipes and tubes with specified room temperature properties for pressure purposes. TDC. Steel designation according to EN: P – steel for pressure equipments 235 – minimum yield strength in N/mm2 T – steel for tubes R – room temperature 1, 2 – group of quality TR 1 - Fluid Transportation - General Purposes (see page 54) TR 2 - Piping and Pressure Purposes (PED, AD 2000 Merkblatt W4) Note: Very often used steel St52 (according to DIN) is now produced as fine grain. For this reason the steel was moved to the part 3 of EN 10216, containing fine grain steel (New name is P355N). Standards Dimensions Dimensional standards Dimensional range Tolerance D Tolerance T Lengths Straightness Tube ends EN 10216-1 10305-1 (upon agreement) Table 5/Page 40 Table 25/Page 69 D ≤ 219,1 mm ±1 % min ±0,5 mm See page 62–65 (Cold formed precise) D ≤ 219,1 mm ±12,5 % min ±0,4 mm See page 62–65 (Cold formed precise) Kinds: • random • fixed ±500 mm • exact Indicative 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: • L < 6 m 0 +10 mm  • L = 6–12 m 0 +15 mm  • L > 12 m 0 +upon agreement Alloved 0,0015.L for tube calcualtion to 1 m max. 3 mm • square cut ends • free from excessive burrs • option: with beveled ends (see page 98) DIN 2448 2391-1 (upon agreement) Table 5/Page 40 Table 25/Page 69 D ≤ 100 mm ±1 % min ±0,5 mm D = 100–200 mm ±1 % See page 62–65 (Cold finished precise) D < 130 mm • T ≤ 2Tn –10 % +15 % • 2Tn <T<4Tn –10% +12,5% • T > 4Tn ±9 % Tn – basic wall thickness according to DIN 2448 D = 130–320 mm • T ≤ 0,05D –12,5% +17,5% • T > 0,05–0,11D ±12,5% • T > 0,11D ±10 % See page 60–67 (Cold finished precise) Visually straight • square cut ends • free from excessive burrs • option: with beveled ends (T ≥ 3,2 mm) BS 3600 Table 5/Page 40 ±1 % min ±0,5 mm Cold finished tubes with less tolerances ≤ 3 %D ±15 % > 3 %D –12,5 % + 15% • random • exact with tolerances: L ≤ 6 m 0 + 6 mm  L > 6 m 0 + 6 mm  +1,5 mm per 3 m above 6 m Visually straight • square cut ends • free from excessive burrs List of dimensional standards and technical delivery conditions standards  HF production facilities to 12,7 m + 30 mm (50 mm), over 12,7 m + 100 mm