about-img

Steel Flat Tubes Section

Ractangular Weight (Kg/m)(Metric Sizes)
H x B (mm) 1.00 1.20 1.50 2.00
20 10 0.453 0.538 0.661 0.857
30 10 0.613 0.729 0.901 1.176
40 10 0.772 0.921 1.140 1.495
50 10 0.932 1.112 1.379 1.814
70 10 - 1.495 1.858 2.452
80 10 - 1.686 2.097 2.771
90 10 - 1.878 2.336 3.090
100 20 - 2.261 2.814 3.728
Manufacturing Process
Forming Cold formed
Welding process TIG, Plazma, TIG-Plazma-TIG
Weld condition External weld bead removed
Tube Marking
Ink-jet marking on tube Raaj Tubes, grade, dimensions
Heat number, length,
Made in india
Bundle tag Dimensions, length, grade, surface condition,
bundle number, total meters
Available Surface Condition
Mill Finish, 180 Grit, 220 Grit, 320 Grit, 400 Grit, 600 Grit
Tolerances
Characteristic Tolerance
Outside dimensions, B and H ± 1% with a minimum of ± 0.5 mm, when B, H < 100 mm
Concavity/Convexity (x1/x2) Max. 0.8% with a minimum of 0.5 mm
Wall thickness, T ± 10%, when T ≤ 2 mm
External corner profile, C1, C2 or R(1) Maximum 1.5T, when T ≤ 3 mm and B, H ≤ 100 mm
Length, L(2) Standard length 6000 mm, tolerance -0/+20 mm
Straightness 0.15% of total length
Twist 2 mm + 0.5 mm/m
Weld postion Narrow side
(1) Exception from standard
(2) Better than standard length tolerance -0/+50 mm

*This dimensions is maximum when measuring B and H and minimum when measuring T.