Steel Tube Handbook - 2018

18 Seamless steel tubes for mechanical and general engineering purpose Standards Dimensions Dimensional standards Dimensional range Tolerance D Tolerance T Lengths Straightness Tube ends NF A 49-311 Table 5/Page 40 ±1 % min ±0,5 mm Weight –8 % +10 % T < 20 mm ±15 % min ±0,5 mm • random • exact • square cut ends • free from excessive burrs 49-312 UNI 4991 (ISO 4200) 7729 Hot finished: D ≤ 51 mm ±0,5 mm D = 51–419 mm ±1% Weight ±10% Cold finished: D ≤ 25 mm ±0,25 mm D = 25–51 mm ±0,35 mm D = 51–168,3 mm ±0,75 mm Weight – 8 % +10 % ±1% min ± 0,5 mm Weight ±10% –15 % + non-specific (limited by weight) T ≤ 7mm ±12% min ±0,10mm T > 7mm –10 +12 % T/D ≤ 3 % ±15 % T/D > 3 % ±12,5 % (do D = 168,3 mm) • random • exact L < 6 m 0 +10 mm  L > 6 m 0 +15 mm  1,5 mm/m STN ČSN 42 5715 42 5716 See page 24 GOST 8732 Table 6/Page 42 See page 28 PN-H 74219 See page 24 ASTM ASME A53* SA-53* Table 7/Page 44 NPS ≤ 1 1 / 2 ± 1 / 64 inch (±0,4 mm) NPS ≥ 2 ±1 % Weight ±10 % –12,5 % • random 6 m ±500 mm • exact 6 m – 0 +15 mm  visually straight • square cut ends • plain, not threadet • NPS ≤ 1,5 (DN 40/48,3 mm) option of the manufacturer • NPS ≥ 2 (DN 50/60,3 mm) T=Std, XS, les than 0,5 inch/12,7 mm beveled (s. 98) T > 0,5 inch and XXS – plain and square cut A519 Table 9/Page 46 Table 28/Page 71 Table 30/Page 72 Hot finished: D ≤ 76,17 mm ±0,51 mm D = 76,2–114,2 mm ±0,64 mm D = 114,3–152,3 mm ±0,79 mm Cold finished: Table 8 of standard Table 7 of standard Table 9 of standard JIS G3445 Table 12/Page 47 See page 24 List of dimensional standards and technical delivery conditions standards STN 42 0250 ČSN 42 0250 Hot formed seamless tubes from steel class 10 to 16. TDC. STN 42 5715 ČSN 42 5715 Hot formed seamless steel tubes. Dimensions. STN 42 5716 ČSN 42 5716 Hot formed seamless steel tubes with smaller tolerances. Dimensions. ASTM A53 Pipe, steel, black and hot-dipped, zinc-coated, welded and seamless. ASTM A519 Seamless carbon and alloy steel mechanical tubing. ASTM A530 General requirements for specialized carbon and alloy steel pipe. UNI ISO 4200 Plain end steel tubes, welded and seamless. General dimensions and masses per unit length. UNI 663 Unalloyed seamless steel tubes. Plain end tubes for general purposes. UNI 4991 Standard plain end seamles and welded tubes. Dimensions. UNI 7729 Unalloyed seamless steel tubes - plain end tubes for mechanical application. NFA 49-311 Seamless steel tubes for mechanical application. Dimensions. TDC. NFA 49-312 Seamless steel tubes with improved mechinability for mechanical machined parts. GOST 1050 Rolled material from standard C- steel grades GOST 8731 Seamless hot-formed steel pipes. TDC. GOST 8732 Seamless hot-formed steel pipes. Dimensions. GOST 19281 Rolled material from high strength steel JIS G 3445 Carbon steel tubes for machine structural purposes. PN-H 74219 Hot rolled seamless steel tubes. PN-H 84018 Low-alloy steel with higher properties. PN-H 84019 Carbon steel for heat treatment. PN-H 84023/7 Steel for higher purposes. Steel for tubes.  HF production facilities to 12,7 m + 30 mm (50 mm), over 12,7 m + 100 mm * Ends preparing is valid for ASTM A53, for A519 as NF A.