Descriptions

Ideal for structural applications, repair, and fabrication, hot-formed structural rectangular steel pipe is easy to cut, weld, form, and machine. It is also easier to bend than cold-formed rectangular steel pipe and can be used in curved framing. Hot rolled flat passes are also ideal for building unique and aesthetic structures without compromising strength, aesthetics and durability.

Properties of Hot-Formed Rectangular Steel Pipes

S235JRH Hot Formed Rectangular Steel Pipe:
Since S235JRH is a low carbon material, it can be welded without the risk of localized corrosion.

S275J0H Hot Formed Rectangular Steel Pipe:
As a variant of mild steel, the material transfers heat very well and does not crack under welding heat, making it suitable for high temperature and high pressure applications such as oil and gas, petroleum, petrochemical and boilers, and power plants.

S275J2H Hot Formed Rectangular Steel Pipe:
It has many characteristics such as easy molding, high tensile performance, durability and compact structure. For bridge and building structures, railings, vehicle frame structures, racks, tower cranes and cranes, etc.

S355J0H Hot Formed Rectangular Steel Pipe:
High tensile strength, strong machinability and ability to withstand high loads. Used in various buildings and structures such as transmission towers, deep water projects, oil and gas projects, power plants, stations, seaport facilities, airport facilities, etc.

S355J2H Cold Formed Rectangular Steel Pipe:
It has many characteristics such as fine grain structure, uniform mechanical properties, high compression resistance, weldability, high cross-sectional performance, fire resistance, and negligible residual stress.

Product supply

The available grades of rectangular steel pipes are EN, ASTM, GB and JIS.
The section size of the hot-formed structural rectangular steel pipe can reach 800mm and the thickness can reach 35mm. The normal supply length is 6m~12m, but other lengths of 4m~16m can be provided upon request. Additionally, other lengths are available upon request. This meets almost all international quality standards and undergoes various tests.

Steel pipe implementation standard:EN 10219-2 : 2006
Steel pipe material grade:S235JRH，S275J0H，S275J2H，S355J0H，S355J2H，S275NH，S420NLH，S420NH， IS 4923 / ASTM A500.

Thermoformed rectangular steel pipes can be used in their natural state or can be shot peened, primed sawed, drilled or milled.
Surface Protection: Black (Natural Uncoated), Clear/Oil Coated, Pre-Galvanized, Hot-Dip Galvanized
Metal slings are generally bundled into rectangles for storage and transportation.

Pipe Specifications

European Standard BS EN 10219-1:2006

size（D x B）	thickness（t）	unit weight
mm	mm	kg/m
30 x 20	1.5	1.11
	2.3	1.64
	3	2.07
40 x 20	1.5	1.34
	2.3	2
	3	2.54
40 x 30	1.5	1.58
	2.3	2.36
	3	3.01
50 x 25	1.5	1.7
	2.3	2.54
	3	3.25
50 x 30	1.5	1.81
	2.3	2.72
	3	3.41
	3.2	3.61
	4	4.39
	5	5.28

Chemical Composition

grade	The chemical composition is not more than Max.(%)
	C	Si	Mn	P	S	N
S235JRH	0.17	—	1.4	0.04	0.04	0.009
S275J0H	0.2	—	1.5	0.035	0.035	0.009
S275J2H	0.2	—	1.5	0.03	0.03	—
S355J0H	0.22	0.55	1.6	0.035	0.035	0.009
S355J2H	0.22	0.55	1.6	0.03	0.03	—

grade	The chemical composition is not more than Max.(%)
	C	Si	Mn	P	S	Nb	V	Al	Ti	Cr	Ni	Mo	Cu	N
S420MH	0.22	0.6	1.00~1.70	0.035	0.03	0.05	0.2	0.02	0.03	0.3	0.8	0.1	0.7	0.025
S420MLH				0.03	0.025

Mechanical Behavior

grade	Yield strength not less than Min.（N/mm2）						tensile strength（N/mm2）
	t≤16	16<t≤40	40<t≤63	63<t≤80	80<t≤100	100<t≤120	t≤3	3<t≤100	100<t≤120
S235JRH	235	225	215	215	215	195	360~510	360~510	350~500
S275J0H	275	265	255	245	235	225	430~580	410~560	400~540
S275J2H
S355J0H	355	345	335	325	315	295	510~680	470~630	450~600
S355J2H
S275MH	275	265	—	—	—	—	360~510	360~510	—
S275MLH
S420MH	420	400	—	—	—	—	500~660	500~660	—
S420MLH

grade	The elongation is not less than Min.（%）				Minimum impact energy KV（J）
	t≤40	40<t≤63	63<t≤100	100<t≤120	-50℃	-20℃	0℃	+20℃
S235JRH	26（24）	25	24	22	—	—	—	27
S275J0H	23（20）	22	21	19	—	—	27	—
S275J2H					—	27	—	—
S355J0H	22（20）	21	20	18	—	—	27	—
S355J2H					—	27	—	—
S420NH	19	19	—	—	—	40	—	—
S420NLH					27	—	—	—