 |
| STANDARDS |
ASTM A-213 |
ASTM A-249 |
ASTM A-269 |
Typical
application
|
Heat exchangers, condensers, super heaters, specific
standard for seamless tubes |
Heat exchangers, condensers, super heaters, specific
standard for welded tubes |
Liquid conduction, instrumentation, general use.
It can be provided in welded or seamless form, generally used on OD
measurements. |
| Welding |
Seamless |
Automatic longitudinal welding, without metal addition |
Automatic longitudinal welding, without metal addition,
and seamless |
| Thermal
treatment |
Annealed at 1040ºCMin. Abrupt cooling |
Annealed at 1040ºCMin. Abrupt cooling |
Annealed at 1040ºCMin. Abrupt cooling |
| Finishing |
Flat surface, scoured |
Flat surface, scoured with fillet weld laminated
internally at cold |
Flat surface, scoured or polished |
| Destructive
tests |
Flattening, flanging, traction, hardness |
Flattening, flanging, traction, hardness, reverse
folding |
Flanging, hardness, reverse flattening |
| Nondestructive
tests |
Hydrostatic or Eddy Current |
Hydrostatic or Eddy Current |
Hydrostatic or Eddy Current |
| Diameter
tolerance |
Ø 0 -25,4 mm(incl)±0,1mm
Ø 25,4 - 38,1mm(incl)±0,15mm
Ø 38,1 - 50,8 mm(excl)±0,2mm
Ø 50,8 - 63,5 mm(excl)±0,25mm |
Ø 0 25,4 mm (excl) ± 0,1 mm
Ø 25,4 - 38,1 mm (incl) ± 0,15 mm
Ø 38,1 - 50,8 mm (excl) ± 0,2 mm
Ø 50,8 - 63,5 mm (excl) ± 0,25 mm
Ø 63,5 - 76,2 mm (excl) ± 0,3 mm
Ø 76,2 - 101,6mm(incl) ± 0,38 mm
Ø 101,6- 127,0mm(incl) + 0,38 mm
- 0,64 mm
|
Ø 0 - 38,1 mm(excl) ± 0,13 mm
Ø 38,1 - 88,9 mm (excl) ± 0,25mm
Ø 88,9 - 139,7 mm (excl) ± 0,38 mm
Ø 139,7 - 203,2 mm (excl) ± 0,76 mm
|
| Thickness
tolerance |
Ø <= 38,1mm -0% ± 10%
Ø
>38,1mm -0% ± 10%
|
± 10% da specified thickness |
Ø <= 1/2" ± 15%
Ø > 1/2" ± 10%
|
| Length
tolerance |
Ø <= 50,8 -0 + 3 mm
Ø > 50,8 - 0 + 5 mm
|
Ø <= 50,8mm -0+3mm
Ø > 50,8mm -0+5mm |
Ø < 38,1mm - 0 + 3,2mm
Ø 38,1 - 203,2mm - 0 + 4,8 mm |
|
|
|
|
| STANDARDS |
ASTM A-270 |
ASTM A-312 |
ASTM A-554 |
Typical
application
|
Food industry, sanitary tubes |
Liquid conduction, stationary, chemical, petrochemical
industries, general use. It can be provided in welded or seamless
form, generally used on nominal schedule measurements |
Rounded, square, rectangular and special tubes. Structural,
furniture, banister uses |
| Welding |
Automatic longitudinal welding, without metal addition |
Automatic longitudinal welding, without metal addition,
or seamless, hot or cold wiredraw |
Automatic longitudinal welding, without metal addition |
| Thermal
treatment |
Annealed at 1040ºCMin. Abrupt cooling |
Annealed at 1040ºCMin. Abrupt cooling |
When required |
| Finishing |
Internally and/or externally polished with fillet
weld, internally cold laminated |
Flat surface, scoured |
Flat surface, polished externally or scoured |
| Destructive
tests |
Reverse flattening |
Flattening, folding, traction |
Hardness and traction, if required |
| Nondestructive
tests |
Hidrostático ou Eddy Current |
Hydrostatic or Eddy Current |
When required |
| Diameter
tolerance |
Ø 25,40+ 0,05 - 0,20mm
Ø 38,10+0,05 - 0,20mm
Ø 50,80+0,05 - 0,28mm
Ø 63,50+0,05 - 0,28mm
Ø 76,20+0,08 - 0,30mm
Ø 101,60+0,08 - 0,38mm
|
Ø 10,29 - 48,26mm(incl) +0,4mm - 0,8mm
Ø 48,26 -114,00mm(incl) + 0,8mm - 0,8mm
Ø 114,30 - 219,08mm(incl) + 1,6mm - 0,8mm
Ø 219,08 - 457,20mm (incl) + 2,4mm - 0,8mm
Ø 457,20 - 660,40mm (incl) + 3,2mm - 0,8mm
Ø 660,40 - 762,00mm (incl) + 4,0mm - 0,8mm
|
OD Thickness tolerance
0 - 12,7mm 0,51 - 1,24 ±0,10mm
12,7 - 25,4 0,51 - 1,65 ±0,13mm
12,7 - 25,4 1,65 - 3,40 ±0,25mm
25,4 - 38,1(incl) 0,64 - 1,65 ±0,20mm
25,4 - 38,1(incl) 1,65 - 3,40 ±0,25mm
38,1 - 50,8(incl) 0,64 - 1,24 ±0,25mm
38,1 - 50,8(incl) 1,24 - 2,11 ±0,28mm
38,1 - 50,8(incl) 2,11 - 3,78 ±0,30mm
50,8 - 63,5(incl) 0,81 - 1,65 ±0,30mm
50,8 - 63,5(incl) 1,65 - 2,77 ±0,33mm
50,8 - 63,5(incl) 2,77 - 4,19 ±0,36mm
63,5 - 88,9(incl) 0,81 - 4,19 ±0,36mm
63,5 - 88,9(incl) acima 4,19 ±0,51mm
88,9 - 127,0 (incl) 0,89 - 4,19 ±0,51mm
88,9 - 127,0 (incl) acima 4,19 ±0,64mm
Dimensional variation for squared and rectangular tubes
to 31,8 ± 0,38 mm
from 31,8 a 63,5 ± 0,51 mm
from 63,5 a 139,7 ± 0,76 mm
|
| Thickness
tolerance |
± 12,5% da specified thickness |
Ø 1/8 " - 2 1/2" (incl) + 20% - 12,5%
Ø 3" - 18" (incl) + 22,5% - 12,5%
|
± 10% da specified thickness |
| Length tolerance |
- 0 + 3,2mm |
- 0 + 6mm |
- 0 + 4,8mm |
|
