Square Tube

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Square Steel Tube, Square Steel Pipe Square hollow sections are often used for columns, however similarly to RHS sections, they are not often used as beams due to its shape that makes it difficult to bolt to other beams and vice versa. SHSs are often called “box sections”. An example is 100 x 100 x 10 SHS, which is 100 mm deep, 100 mm wide and the wall is 10 mm thick. Similarly to RHS sections, hot rolled SHSs are made at the mill as one piece, whereas cold formed SHSs are made of a flat sheet rolled at right angles and welded. It is therefore easy to note the difference, as the cold rolled SHSs have a weld all along its length. Standard ASTM A500, EN 10210, EN 10219, JIS G3466, BS 1387, BS 6323 PART5 Grades S185, S235, S235JR, S235 G2H, S275, S275JR, S355JRH, S355J2H, St37, ST52 Out diameter 10*10mm – 500*500mm Wall thickness 0.5mm – 20mm Surface Conditions Special Features Hot Rolled Hard to find sizes Hot Rolled Pickled and Oiled Mitre cutting Cold Rolled High strength steel on request KleenKote Mult lengths Standard Corner Radius(Mechanical Sizes:) Diameter (inch) Wall Thickness (inch) Radius Tolerance (inch) 1/2 to 1 1/2 0.028 1/32 to 1/16 1/2 to 2 1/2 0.035 1/32 to 1/16 1/2 to 4 0.049 3/64 to 5/64 1/2 to 4 1/8 0.065 1/16 to 7/64 3/4 to 4 1/8 0.083 5/64 to 1/8 over 4 1/8 to 6 0.095 3/16 to 5/16 1 to 4 1/8 0.095 3/32 to 5/32 over 4 1/8 to 6 0.109 3/16 to 5/16 1 1/4 to 4 0.109 1/8 to 13/64 over 4 to 6 0.120 3/16 to 5/16 1 1/4 to 4 0.120 3/16 to 5/16 over 4 to 6 0.134 7/32 to 7/16 2 to 4 0.148 3/16 to 5/16 over 4 to 8 0.148 7/32 to 7/16 2 to 8 0.165 1/4 to 1/2 2 to 8 0.180 1/4 to 1/2 2 1/2 to 4 0.203 5/16 to 9/16 over 4 to 8 0.203 5/16 to 9/16 2 1/2 to 8 0.220 3/8 to 5/8 Standard Corner Radius(Structural Sizes:) Max. 3 x Nominal Wall Thickness Mechanical Sizes Structural Sizes Largest Nominal Outside Dimension Outside Tolerance at all Sides at Corners Largest Nominal Outside Dimension Outside Tolerance at all Sides at Corners 3/16 to 5/8 ± 0.004 2 1/2 and under ± 0.020 over 5/8 to 1 1/8 ± 0.005 over 2 1/2 to 3 1/2 ± 0.020 over 1 1/8 to 1 1/2 ± 0.006 over 3 1/2 to 5 1/2 ± 0.030 over 1 1/2 to 2 ± 0.008 over 5 1/2 ± 1% over 2 to 3 ± 0.010 over 3 to 4 ± 0.020 over 4 to 6 ± 0.020 over 6 to 8 ± 0.025 Straightness Mechanical Sizes: Max. 1/16" in 3 feet Structural Sizes: Max. 1/8" x Number of feet of total length divided by 5 Wall Thickness Mechanical & Structural Sizes: ± 10% of Nominal Wall Thickness Squareness of Sides Mechanical Sizes: Max: ± b = c x 0.006" b = Tolerance for out-of-square c = Largest external dimension across flats Structural Sizes: Adjacent sides may deviate from 90 ° by ± 2 ° Maximum Twist (Mechanical & Structural Sizes) Largest Dimension, inches Max. Twist*, inches over 1/2 to 1 1/2 0.050 over 1 1/2 to 2 1/2 0.062 over 2 1/2 to 4 0.075 over 4 to 6 0.087 over 4 to 8 0.100 Convexity & Concavity(Mechanical & Structural Sizes) Largest Nominal O.D., Inches Tolerance ± Inches 2 1/2 and under ± 0.010 over 2 1/2 to 4 ± 0.015 over 4 to 8 ± 0.025 Structural Tubing A 500 Requirements Grades Chemical Physical C Max. % Mn Max. % P Max. % S Max. % Cu Max. % Tensile strength, min. psi Yield strength, min. psi Elongation in 2 in. Grade B 0.26 / 0.04 0.05 0.20 58,000 46,000 23 Grade C 0.23 1.35 0.04 0.05 0.20 62,000 50,000 21