Square Tube

Square tube is an extruded product that is widely used for all types of fabrication projects where lightweight and corrosion resistance is a primary concern. Square tube has square corners inside and outside, with no weld seam.Square tube is a steel tube with the same side length. It is not very heavy and has high compressive and torsional strength. It is widely used in machinery manufacturing and other fields. The specification marking method of square tube is mainly expressed by side width*side width*tube wall thickness.

Types of Square Tube

Classification Basis	Type Name
Categorized By Material	Carbon Steel Square Tube	Alloy Steel Square Tube	Stainless Steel Square Tube
Molding Processes	ERW Square Tube	LSAW Square Tube	SSAW square tube	Seamless Square Tube
Rolling Or Finishing Type	Hot Rolled Square Steel Tube	Hot Finished Square Tube	Cold Drawn Square Tube
Anti-Corrosion Coating	Pre Galvanized Square Tube	Hot Dipped Galvanized Square Tube	Zinc-Aluminum-Magnesium Coated Square Tubes	black square tube（NO coating）
Punching or not	perforated square tube	Ordinary square tube
Shape	Right Angle Square Tube	Round Arc Angle Square Tube
Wall Thickness	Thin-walled square tubes	Medium and thick walled square tubes	Thick-walled square tubes	Ultra-thick wall square tube
Caliber Size	Small diameter square steel tube	Regular caliber square tubes	Custom caliber square tubes	Large caliber square tube
Alloying Elements	16 Mn Square Steel Tube	Chromoly Square Tube ,etc.
Standard	ASTM A500 Square Tube	EN 10219 Square Tube	AS 1163 Square Steel Tube	JIS G3466 Square Steel Tube
Grade	Grada A Square Steel Tube	S355J0H Square Tube	C350 Square Steel Tube	SS400 Square Steel Tube
Applications	Structural square tubing	Square tubes for mechanical structures	Square steel pipe for tower crane	Square steel tubes for ships, etc.

Standard of Square Tube

EN 10210:S235JRH,S355J2H,S355NH,S355J0H
EN 10219:S235JRH,S355J2H,S355NH,S355J0H
ASTM A500:Gr.A,Gr.B,Gr.C

ASTM A312 TP304,304L,316,316L

Application

Hydraulic Pipe, Structure Pipe

Special Pipe

Thick Wall Pipe

Thickness

0.8 - 16 mm

Length

12M, 6m, 6.4M

Certificate

API, ce, Bsi, rohs, SNI, BIS, SASO, PVOC, SONCAP, SABS, sirm, tisi, KS, JIS, GS, ISO9001

Processing Service

Welding, Punching, Cutting, Bending, Decoiling

Product name

Square Steel Pipe

Technique

Hot Rolled

Outer Diameter

10*10-600*600

standard

API, ASTM, BS, DIN, GB, JIS

Surface

Galvanized,Black,Painting

Material

Q195/Q235/Q345

Length

5.8m,6m,12m

Shape

Square

grade

45#, 10Cr9Mo1VNb, 15NiCuMoNb5, A315,Q345, ST35, St52

Keyword

ASTM A106 GR.B Galvanized Seamless Pipe，
Square Tube & Pipe, Square Hollow Section (SHS), Carbon Steel Square Tube, Square Structural Steel Tubing

What are the characteristics and uses of square tubes?

1. Square tube product description

Square tube is a hollow square cross-section light thin-walled steel tube, also known as steel cold-bent profile. It is a square cross-section steel made of Q235 hot-rolled or cold-rolled strip or coil as the base material, cold-bent and then welded by high-frequency welding. In addition to the thickening of the wall thickness, the corner size and edge straightness of the hot-rolled extra-thick-walled square tube reach or even exceed the level of the resistance-welded cold-formed square tube. It has good comprehensive mechanical properties, good weldability, cold and hot processing performance and corrosion resistance, and good low-temperature toughness.

2. Square tube use

Square structural tubes are corrosion-resistant, moisture-proof, and resistant to extreme temperatures. This ensures structural robustness in many industrial applications. The uses of square tubes include projects such as construction, machinery manufacturing, steel construction, shipbuilding, solar power generation brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, boiler construction, and highway railings. There are also house buildings, pressure vessels, oil storage tanks, bridges, power station equipment, lifting and transportation machinery and other high-load welded structural parts. Recyclability is very important to maintain the sustainability of stainless steel materials, and square structural tubes are highly recyclable. This reduces the impact on the environment.

square tubes