Hollow Section

Hollow Structural Section:

Specifications Of steel hollow section:

Grade	302,304,316,430
Standard	ASTM A312, ASTM A213
Surface	hot rolled pickled ,polished
Technology	Hot Rolled , Welded,Cold Drawn
Out Diameter	1/8″~32″,6mm~830mm
Type	Square Hollow Section (SHS),Rectangular Hollow Section (RHS),Circular Hollow Section (CHS)
Raw Materail	POSCO, Baosteel, TISCO, Saky Steel, Outokumpu

Tyoes Of hollow section:

Square Hollow Section(SHS):

Rectangular Hollow Section(RHS):

Circular Hollow Sections(CHS):

Features & Benefits:

Chemical Composition Of cold formed hollow section:

Grade	C	Mn	P	S	Si	Cr	Ni	Mo
301	0.15	2.0	0.045	0.030	1.0	16-18.0	6.0-8.0	-
302	0.15	2.0	0.045	0.030	1.0	17-19	8.0-10.0	-
304	0.15	2.0	0.045	0.030	1.0	18.0-20.0	8.0-10.5	-
304L	0.030	2.0	0.045	0.030	1.0	18-20.0	9-13.5	-
316	0.045	2.0	0.045	0.030	1.0	10-18.0	10-14.0	2.0-3.0
316L	0.030	2.0	0.045	0.030	1.0	16-18.0	12-15.0	2.0-3.0
430	0.12	1.0	0.040	0.030	0.75	16-18.0	0.60	-

Mechanical properties :

Grade	Tensile Strength ksi[MPa]	Yiled Strengtu ksi[MPa]
304	75[515]	30[205]
304L	70[485]	25[170]
316	75[515]	30[205]
316L	70[485]	25[170]

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