Steel Tube Handbook - 16. edition january 2021
30 Seamless boiler tubes for pressure equipments (high temperature) List of dimensional standards and technical delivery conditions standards ASTM A106 Seamless carbon steel pipe for high-temperature service. ASTM A192 Seamless carbon steel boiler tubes for high-pres- sure service. ASTM A209 Seamless carbon-molybdenum alloy-steel boiler and superheater tubes. ASTM A210 Seamless medium-carbon steel boiler and super- heater tubes. ASTM A213 Seamless ferritic and austenitic alloy-steel boiler, superheater and heat-exchanger tubes. ASTM 335 Seamless ferritic alloy-steel pipe for high-tempera- ture service. ASTM A450 General requirements for carbon, ferritic alloy and austenitic alloy steel tubes. ASTM A530 General requirements for specialized carbon and alloy steel pipe. ASTM A556 Seamless cold drawn carbon steel feedwater hea- ter tubes. ASTM A692 Seamless medium-strength carbon-molybdenum alloy steel boiler and superheater tubes. ASTM A999 General requirements for alloy and stainless steel pipe. ASTM A1016 General requirements for ferritic alloy steel, auste- nitic alloy steel and stainless steel tubes. Stan- dards Dimensions Dimensional standards Dimensional range Tolerance D Tolerance T Lengths Straightness Tube ends ASTM ASME A192 SA-192 Table 9/Page 46 Table 10/Page 47 Table 11/Page 47 Length upon agreement, depending on tube dimension. Indicative - like EN. Tolerance: A 450 a A 1016 Seamless, hot finished : All dimensions 0+3/16 in. (0+5mm) Seamless, cold finished: D under 2 in. (50,8 mm) 0 + 1/8 in. (0+3mm) D 2 in.(50,8 mm) and over 0 + 3/16 in. (0+ 5mm) Toler. for L under 24 ft. (7,3 m) L over 24 ft : 0 + 1/8 in. (+3 mm) for each 10 ft (3 m) or 0 + 1/2 in. (0+13 mm) smaller vallue is valid A 530 a A 999 Seamless and welded (electric. resistant) For L under 24ft. (7,3 m) incl. 0 + 1/4 in. (0+ 6 mm) For larger lengths under agreement (Valid for A 999) Tolerances of random lengths upon agreement. Visually straight • square cut ends • free from excessive burrs • beveled ends upon agreement only A209 SA-209 A210 SA-210 A213 SA-213 A335 SA-335 Table 7/Page 44 or Table 9/Page 46 Ordering of Pipe or Tube See Table 8/Page45 See Table 8/Page45 Nominal T –12,5 % Minimum T to + only A556* SA-556 Table 9/Page 46 interval 5/8 - 1 1/4 in 15/9 - 31,8 mm See Table10/Page 47 See Table 11/Page 47 JIS G3456 Table 13/Page 50 D ≤ 50 mm ±0,50 mm D = 50–160 mm ±1 % T ≤ 4 mm ±0,5 mm T > 4 mm ±12,5 % • square cut ends • free from excessive burrs • beveled ends upon agreement only G3458 G3461 Table 12/Page 47 Hot finished Cold finished (Tolerances see standards) D ≤ 50 mm, L ≤ 7 m 0 +7 mm D ≤ 50mm, L > 7m +3mm/m, max 15mm D>50mm,L ≤ 7m 0+10mm D > 50 mm, L > 7 m +3 mm/m, max 15mm G3462 HF production facilities to 12,7 m + 50 mm (30 mm), over 12,7 m + 100 mm
Made with FlippingBook
RkJQdWJsaXNoZXIy MzU1NTI=