Hollow Section

Main products:seamless steel pipe, round steel, welded pipes, spiral pipes, galvanized pipe, alloy pipes, stainless steel, threaded steel, angle grooves, aluminum plates, U-shaped steel and other dozens of products, hundreds of steel grade materials.

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Delong Metal is group company in the steel manufacture & Trading, founded in the 2000s, 800+ staff, 25, 000+ m2 non-dust workshop, 40+ great large mills and cooperation partners in China, 4000, 000+ MT production per year under ISO management, 40, 000+customers in domestic and overseas market, 10 billion USD of annual turnover, 15+ subsidiary companies all over China, ranking the Top 100 private enterprises in China, 1 hour reach Shanghai/Tianjin /Guangzhou Port, we keep high quality, competitive price, thousands tons of stock, most efficient delivery and reliable cooperation for global valued customers.

In recent years, our company has always occupied the market with high-quality products. The products are exported to Southeast Asia, Central Asia, North Africa, South America and other regions. We always give the buyer high-quality products, low prices, good service, one-time cooperation for lifelong friends. Welcome domestic and international friends to inquire for a better future together!

A hollow structural section (HSS) is a type of metal profile with a hollow cross section. The term is used predominantly in the United States, or other countries which follow US construction or engineering terminology.

HSS members can be circular, square, or rectangular sections, although other shapes such as elliptical are also available. HSS is only composed of structural steel per code.

HSS is sometimes mistakenly referenced as hollow structural steel. Rectangular and square HSS are also commonly called tube steel or box section. Circular HSS are sometimes mistakenly called steel pipe, although true steel pipe is actually dimension and classed differently from HSS. (HSS dimensions are based on exterior dimensions of the profile; pipes are also manufactured to an exterior tolerance, albeit to a different standard.) The corners of HSS are heavily rounded, having a radius which is approximately twice the wall thickness. The wall thickness is uniform around the section.

In the UK, or other countries which follow British construction or engineering terminology, the term HSS is not used. Rather, the three basic shapes are referenced as CHS, SHS, and RHS, being circular, square, and rectangular hollow sections. Typically, these designations will also relate to metric sizes, thus the dimensions and tolerances differ slightly from HSS.

Keywords	Hollow Section;Square Steel Tube;Rectangular Steel Tube; H Beam;I Beam;C Beam;Angle
Size	OD: Hollow Section/Square Steel Tube/Rectangular Steel Tube:10mm10mm ~ 500mm500mmWT: 0.5mm ~ 20mmLENGTH: 0.3mtr ~ 18mtr
Standard & Grade	ASTM A500, ASTM A53, EN 10210, EN 10219, JIS G 3466, BS 1387, BS 6323.
Ends	Square Cut, Burr Removed
Delivery	Within 30 days and Depends on your order quantity
Payment	TT, LC , OA , D/P
Packing	Waterproof Paper Wrapped, Steel Strips Bundled, Two Tags on Each Bundle
Usage	In Industrial Construction, Machinery/Rack/Container manufacturing

ASTM A500 Cold Formed Welded and Seamless Carbon Steel Steel Structural Tubing in Round and Shapes

EN 10210 Hot finished structural hollow sections of non-alloy and fine grain structural steels

EN 10219 Cold formed welded structural hollow sections of non-alloy and fine grain steels

ASTM A53 used as structural steel or for low-pressure plumbing

Grade and Chemical Composition & Mechanical Properties
Grade	Class	(Chemical Composition) %					Tensile Strength σb	Yield Strength	Elong ation δ
		C	Mn	Si	S	P	T.S MPa	Re MPa	E.L %
		C	Mn	(Not More Than)			(Not Less Than)
Q195		0.06~0.12	0.25~0.50	0.30	0.050	0.045	315	195	22
Q215	A	0.09~0.15	0.25~0.55	0.30	0.050	0.045	335	215	22
Q215	B	0.09~0.15	0.25~0.55	0.30	0.045	0.045	335	215	22
Q235	A	0.14~0.22	0.30~0.65	0.30	0.05	0.045	375	235	20
Q235	B	0.12~0.20	0.30~0.70	0.30	0.045	0.045	375	235	20
Grade	Class	(Chemical Composition) %					Tensile Strength σb	Yield Strength	Elong ation δ
		C	Mn	Si	S	P	T.S MPa	Re MPa	E.L %
		(Not More Than)					(Not Less Than)
ASTM A53	A	0.25	0.95	0.55	0.045	0.050	330	205
ASTM A53	B	0.30	1.20	0.55	0.045	0.050	415	240
BS1387-1985		(Chemical Composition) %					Tensile Strength σb	Yield Strength	Elong ation δ
		C	Mn	Si	S	P	T.S MPa	Re MPa	E.L %
		(Not More Than)					(Not Less Than)
		0.20	1.20	–	0.045	0.045	320~460	195	20

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