Square and rectangular stainless steel tube

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Stainless steel square and rectangular tube

What is square and rectangular Stainless Steel tube

Square and rectangular stainless steel tubings are often called stainless steel pipes or structural pipes. These are also called hollow structure sections or HSS for short. For structural purposes, square tubes, rectangular tubes, I beams, etc., many different types of steel and alloys can be purchased. The manufacturing process of the square tube is the same as that of the tube, but the product goes through a series of forming frames to meet the final square specifications.

Stainless steel square and rectangular tube specification

Stainless steel rectangular tubes can be processed according to the size and wall thickness specifications required by customers and heat treatment requirements. Generally speaking, stainless steel rectangular pipes are manufactured according to current API, ASTM and ASME standards. If special engineering needs, we can also provide large diameter rectangular tubes.

Item	Details
SS Rectangular pipe Size	10 X 20, 12.75 X 25.4, 10 X 30, 15 X 30, 20 X 40, 20 x 50, 25 X 50, 20 x 60, 40 X 60, 40 X 80, 45 X 75, 50 X 100
SS Square pipe size	10x10, 20x20, 30x30, 50x50, 8080,100100, 150*150
Grades	TP - 304/L/H, TP - 316/L/H/Ti, TP - 317L, TP - 321/H, TP - 347/H, 202, JT - 7, J4 - 1, TP - 409/L, TP - 410, TP - 430Ti, TP 439
Standards	ASTM A249 - A269 - A312 - A358 - A409 - A554 - A778 - A789 - A790
Tolerance on Wall Thickness	Nominal Wall Tolerance Plus 12.5%, Minus 12.5%
Tolerance on Length	Commercial Length: 6000mm +/- 30mm Fix Length: from 1200 mm up to 12000mm with a tolerance up to -0/+ 5mm
Finish	Polished Grit 120 - 600, Seamless, Welded, Brushed, Pickled, Solution Annealed and Pickled up to O.D. 219.1mm,Mirror Polished

Chemical composition

The below table shows the chemical composition of the used for Stainless Steel Square and Rectangular Tubes:

Grades	UNS	C	Mn	P	S	Si	Cr	Ni
TP304	S30400	0.08	2	0.045	0.03	1	18.0-20.0	8.0-11.0
TP304L	S30403	0.035	2	0.045	0.03	1	18.0-20.0	8.0-13.0
TP316	S3160	0.08	2	0.045	0.03	1	16.0-18.0	11.0-14.0
TP316L	S31603	0.035	2	0.045	0.03	1	16.0-18.0	10.0-14.0

Mechanical properties

Material	Heat	Temperature	Tensile Strength	Yield Strength	Elongation %, Min
	Treatment	Min.	Min.	Min.
		º F(º C)	Ksi (MPa)	Ksi (MPa)
TP304	Solution	1900 (1040)	75(515)	30(205)	35
TP304L	Solution	1900 (1040)	70(485)	25(170)	35
TP316	Solution	1900(1040)	75(515)	30(205)	35
TP316L	Solution	1900(1040)	70(485)	25(170)	35

Character of stainless steel square and rectangular tube

Durability
Dimensionally accurate
Attractive appearance
High temperature resistance
High Corrosion resistance
High toughness and higher strength
Easy to weld, cut, form and machine with the proper equipment and knowledge

Process of stainless steel square tubing

Applications of Stainless Steel square and rectangular tube

The Stainless Steel square and rectangular pipe are very suitable for outdoor environments and other challenging applications. They are widely used for all kinds of structural applications and fabrication projects where greater strength and superior corrosion resistance is required.

This type of pipe is also used for cooling circuits, ammunition, seawater corrosion-resistant components, and condenser pipes.

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