Steel Tube Handbook - 2018

16 Seamless steel tubes for mechanical and general engineering purpose EN 10 083 Steels for quenching and tempering. Part 1: General TDC. Part 2: TDC for non-alloy steels. Part 3: TDC for alloy steels. EN 10 084 Case hardening steel. TDC. EN 10 216 - 1 Seamless steel tubes for pressure purposes. TDC. Part 1: Non-alloy steel tubes with specific room temperature properties. EN 10 294 - 1. Hollow bars for machining. Part 1: Non-alloy and alloy steel. EN 10 297 - 1 Seamless circular steel tubes for mechanical and general engineering purposes. Part 1: Non-alloy and alloy steel tubes. 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 Seamless tubes. Dimensions. DIN 17200 Steels for quenching and tempering. TDC. DIN 17204 Seamless circular tubes of steel for quenching and tempering. TDC. DIN 17210 Case hardening steels. TDC. BS 6323 Specification for seamless and welded steel tubes for automobile, mechanical and general engineering purposes. Part 1: General requirements. Part 3: Specific requirements for hot finished seamless steel tubes. ISO 2937 Plain end seamless steel tubes for mechanical application. ISO 2938 Hollow steel bars for machining. List of dimensional standards and technical delivery conditions standards Standards Dimensions Dimensional standards Dimensional range Tolerance D Tolerance T Lengths Straightness Tube ends EN 10294-1 (upon agreement) ** • tubes from mill are not machining operated • in preference as precision tubes • dimension D x d (up to D = 100mm) Table 5 / Page 40 D ≤ 75 mm ±0,5 mm D = 75–180 mm ±0,75 % D > 180 mm ± 1% D ≤ 180mm, T ≤ 15 mm ±12,5% min ±0,4 mm • random • exact upon agreement • 0,001.L • locally (1mm/m) • deliveries in agreement • square cut ends • free from excessive burrs 10297-1 (10220) 10305-1 (upon agreement) Table 25 / Page 69 Table 26 / Page 70 Table 5 / Page 40 D ≤ 219,1 mm ±1 % min ±0,5 mm See page 62–66 (Cold formed precise) D ≤ 219,1 mm ±12,5 % min ±0,4 mm See page 62 - 65 (Cold formed precise) • random • exact L < 6 m 0 +10 mm  L = 6–12 m 0 +15 mm  L > 12 m upon agreement D > 33,7 mm 0,0015.L DIN 2448 See page 22 2448 (2391) BS 6323/3 ±1% min ±0,5 mm ≤ 3% D ±15 % > 3% D –12,5 % +15 % • random • exact  L < 6 m 0 +10 mm L > 6 m 0 +15 mm • square cut ends • free from excessive burrs  HF production facilities to 12,7 m + 30 mm (50 mm), over 12,7 m + 100 mm