HSS - ASTM A500 Round (HA)
Round Hollow Structural Sections to ASTM A500 are circular tube profiles prized for their equal strength in every direction and their clean, architectural appearance — common in exposed columns, handrails and balustrades, bollards, and diagonal bracing where a compact, uniform member is wanted. Their closed circular shape gives excellent resistance to buckling and torsion for their weight, and their round profile sheds water and debris naturally in exterior applications. The full ASTM A500 round range is available here as free CAD blocks, with outside diameter and wall thickness data drawn from CISC 12.
Designation
Section
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HA711x25
Imperial: HA28x1.000
HA711x19
Imperial: HA28x0.750
HA711x13
Imperial: HA28x0.500
HA610x25
Imperial: HA24x1.000
HA610x19
Imperial: HA24x0.750
HA610x13
Imperial: HA24x0.500
HA610x9.5
Imperial: HA24x0.375
HA508x25
Imperial: HA20x1.000
HA508x19
Imperial: HA20x0.750
HA508x13
Imperial: HA20x0.500
HA508x9.5
Imperial: HA20x0.375
HA508x6.4
Imperial: HA20x0.250
HA457x25
Imperial: HA18x1.000
HA457x19
Imperial: HA18x0.750
HA457x13
Imperial: HA18x0.500
HA457x9.5
Imperial: HA18x0.375
HA457x6.4
Imperial: HA18x0.250
HA406x25
Imperial: HA16x1.000
HA406x19
Imperial: HA16x0.750
HA406x16
Imperial: HA16x0.625
HA406x13
Imperial: HA16x0.500
HA406x9.5
Imperial: HA16x0.375
HA406x6.4
Imperial: HA16x0.250
HA356x19
Imperial: HA14x0.750
HA356x16
Imperial: HA14x0.625
HA356x13
Imperial: HA14x0.500
HA356x9.5
Imperial: HA14x0.375
HA356x6.4
Imperial: HA14x0.250
HA324x19
Imperial: HA12.75x0.750
HA324x16
Imperial: HA12.75x0.625
HA324x13
Imperial: HA12.75x0.500
HA324x9.5
Imperial: HA12.75x0.375
HA324x6.4
Imperial: HA12.75x0.250
HA273x13
Imperial: HA10.75x0.500
HA273x9.5
Imperial: HA10.75x0.375
HA273x7.9
Imperial: HA10.75x0.313
HA273x6.4
Imperial: HA10.75x0.250
HA273x4.8
Imperial: HA10.75x0.188
HA245x9.5
Imperial: HA9.625x0.375
HA245x6.4
Imperial: HA9.625x0.250
HA219x13
Imperial: HA8.625x0.500
HA219x9.5
Imperial: HA8.625x0.375
HA219x6.4
Imperial: HA8.625x0.250
HA219x4.8
Imperial: HA8.625x0.188
HA178x13
Imperial: HA7x0.500
HA178x9.5
Imperial: HA7x0.375
HA168x13
Imperial: HA6.625x0.500
HA168x9.5
Imperial: HA6.625x0.375
HA168x6.4
Imperial: HA6.625x0.250
HA168x4.8
Imperial: HA6.625x0.188
HA152x7.9
Imperial: HA6x0.313
HA152x6.4
Imperial: HA6x0.250
HA141x13
Imperial: HA5.563x0.500
HA141x9.5
Imperial: HA5.563x0.375
HA141x6.4
Imperial: HA5.563x0.250
HA127x9.5
Imperial: HA5x0.375
HA127x7.9
Imperial: HA5x0.313
HA127x6.4
Imperial: HA5x0.250
HA114x6.4
Imperial: HA4.5x0.250
HA114x4.8
Imperial: HA4.5x0.188
HA102x6.4
Imperial: HA4x0.250
HA102x4.8
Imperial: HA4x0.188
HA89x6.4
Imperial: HA3.5x0.250
HA89x4.8
Imperial: HA3.5x0.188
HA89x3.2
Imperial: HA3.5x0.125
HA76x6.4
Imperial: HA3x0.250
HA76x4.8
Imperial: HA3x0.188
HA76x3.2
Imperial: HA3x0.125
HA73x6.4
Imperial: HA2.875x0.250
HA73x4.8
Imperial: HA2.875x0.188
HA73x3.2
Imperial: HA2.875x0.125
HA64x6.4
Imperial: HA2.5x0.250
HA64x4.8
Imperial: HA2.5x0.188
HA64x3.2
Imperial: HA2.5x0.125
HA60x6.4
Imperial: HA2.375x0.250
HA60x4.8
Imperial: HA2.375x0.188
HA60x3.2
Imperial: HA2.375x0.125
HA48x4.8
Imperial: HA1.9x0.188
HA48x3.2
Imperial: HA1.9x0.125
HA42x3.2
Imperial: HA1.66x0.125
