JIS G3192-2005 L-section

JIS G3192-2005 L-section

What is L-Section?L section(also called L-shaped steel, L beam) is an unequal side and unequal thickness angle steel, and it is a new type of profile produced to meet the needs of large ship construct

What is L-Section?

L section(also called L-shaped steel, L beam) is an unequal side and unequal thickness angle steel, and it is a new type of profile produced to meet the needs of large ship construction.

If the size of height and web is the same, the cross-section coefficient of L-section is bigger than that of bulb flats; If the cross-section coefficient is the same, L-section can help to increase the ships' storage capacity and economic benefit. Furthermore, if the cross-section is the same, the plate thickness of L-section is thinner than that of bulb flats, and it can help to improve the quality of weld. So the L-Sections are mainly used in large ships, marine engineering structures and demanding building engineering structures etc.


How to specify the L-Section?

It can be expressed as : web height (A) *  area width(B) * web thickness (t1) x panel thickness (t2).


The specification of standard JIS G3192-2005

L shaped section (JIS G3192-2005)
TypeNominal dimensions (mmSectional area
(cm2)
Theoretical weight (kg/m)
ABt1t2r1r2
L200×90×8×142009081414727.821.8
L200×90×9×142009091414729.6623.3
L200×90×10×1420090101414731.5224.7
L250×90×9×1425090914178.534.3126.9
L250×90×9×1525090915178.535.1227.6
L250×90×10×15250901015178.537.4729.4
L250×90×11×16250901116178.540.1631.9
L250×90×12×16250901216178.542.9533.7
L300×90×10×16300901016199.543.8834.1
L300×90×11×16300901116199.546.2236.3
L300×90×12×17300901217199.549.8439.1
L300×90×13×17300901317199.552.6741.3
L350×100×11×173501001117221154.4142.7
L350×100×12×173501001217221157.7445.3
L400×100×11.5×1640010011.516241261.0947.9
L400×100×12×184001001218241264.750.8
L400×100×13×184001001318241268.5953.8
L450×125×11.5×1845012511.518241273.1157.4
the tolerance of L-section in standard JIS G3192-2005
Nominal dimensions (mm)Tolerances of products (mm)

Standard

JIS G3192-2005

Side length(A or B)50≤A、B<100±2.0
100≤A、B<200±3.0
200≤A、B±4.0
Thickness(t, t1, t2)A≥1306.3≤t<10±0.8
10≤t<16±1.0
16≤t<200±1.2






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