TECHNICAL SPECIFICATIONS

Tube in bars

Outside diameter
from 5,00 to 10,00 mm ± 0,07
from 10,01 to 15,00 mm ± 0,08
from 15,01 to 25,00 mm ± 0,10

Thickness
% ± 10

Maximum camber

from Ø 5,0-12,0     1,00 mm/m
from Ø 12,1-18,0   1,50 mm/m
from Ø 18,1-25,0   2,00 mm/m

Inside weld bead

=< 0,10 mm da 0,40 a 0,75 mm thickness
=< 0,15 mm da 0,80 a 1,20 mm thickness
=< 0,20 mm da 1,25 a 1,50 mm thickness

Length

from mm 300 to 3.300 ± 1,00 mm
from mm 3.301 to 4.300 ± 1,50 mm
from mm 4.301 to 6.000 ± 5,00 mm
from mm 6.001 to 10.000 ± 10,00 mm
from mm 10.001 to 14.000 ± 15,00 mm

Heat-treated tube

Hardness
160 ± 15 HV5 unless differently required by customer
Max 90 HRB concerning ASTM A-249 norm

For tube in coil

Length from 100 to 400 m, unless differently required by customer
Pressure test at 10 Bar for 10 min. in air or at 40 Bar in water
External diameter tolerance:
diameter 5,0 - 14,0 ± 0,15 mm
diameter 14,1 - 25,0 ± 0,20 mm


Nickel-plated tube
Nickel thickness from 10 to 20 µ


Marking
All the tubes are marked with manufacturer identification code and also with Ø, thickness, alloy and specific production information in order to grant the product traceability.