SS400 Square Tube
Carbon steel tubes are hollow with rectangular-shaped corners for additional strength in structural applications. They are easy to weld, work, and cut. We offer customers a wide range of carbon steel products to meet their needs. 20 years of experience in the carbon steel industry, with professional sales services.
+86 15650078182
+86 15650078182
+86 15650078182
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Product Description

Product nameSS400 Square Tube
MATERIAL GRADEQ195 = S195 / A53 Grade AQ235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2Q355 = S355JR / A500 Grade B Grade C, etc
STANDARDASTM A500 Gr.A / B/ C,(Q195、Q215、Q235、SS400、20#、45#、Q345、16Mn、Q390、ST52-3)
Wall thickness1.3-20mm
Length5.8m/6m or based on your request
SurfaceBlack, or Galvanized and Oiled to prevent the rust
Delivery time7-15 Days
PackingIn bundles, packed in woven bag or as your request.

Product Display

Steel Square Tube is widely used in industrial maintenance, agricultural implements, transportation equipment, truck beds, trailers, frames, etc. It's box-shape configuration allows for much greater strength and rigidity compared to angles or channels. This steel shape is easy to weld, cut, form and machine with the proper equipment and knowledge. Zhongxi Metal stocks hundreds of sizes of square tube at wholesale prices in ready to ship precut and mill lengths or you can order just what you need custom Cut to Size in any quantity. 


Carbon steel square tube classification

The square tube is divided according to the production process: hot rolled seamless square tube, cold drawn seamless square tube, extruded seamless square tube, welded square tube. Among them, the welded square tube is divided into:

(a) According to the process-arc welding square tube, resistance welding square tube (high frequency, low frequency), gas welding square tube, furnacewelding square tube

(b) According to the weld seam-straight seam welded square tube, spiral welded square tube

Value added services for carbon steel pipe

In addition to our high-quality carbon steel piping, we also offer a variety of secondary services to ensure your materials meet all of your needs. We can provide:

Laser cutting services

Saw cutting services


Square tube is a versatile structural component that can also be used in appliances and fencing. Some of its common uses are steel frames for gate construction,door jambs, and grills. It can also be used in walls, rafters,floor joists,and studs for walls.

20x20 / 25x251.2MM --2.75MM6M IN STOCK (OR CUSTOMIZED)
30x30 / 20x40 / 30x40 / 25x401.2MM -- 3.5MM6M IN STOCK (OR CUSTOMIZED)
40x40 / 50x5030x50 / 25x50 / 30x60 / 40x601.2MM -- 4.75 MM6M IN STOCK (OR CUSTOMIZED)
60x60 / 50x70 / 40x80 / 40x501.2 MM -- 5.75 MM6M IN STOCK (OR CUSTOMIZED)
70x70 / 60x80 / 50x80 / 100x40 / 50x901.5MM -- 5.75 MM6M IN STOCK (OR CUSTOMIZED)
75x75 / 80x80 / 90x90 60x100 / 50x100 / 120x60 / 100x80 / 60x901.5MM -- 7.75 MM6M IN STOCK (OR CUSTOMIZED)
100x100 / 120x801.8MM -- 7.75 MM6M IN STOCK (OR CUSTOMIZED)
120x120 / 130x130 180x80 / 160x80 / 100x150 / 140x80 / 140x602.5MM -- 10.0 MM6M IN STOCK (OR CUSTOMIZED)
140x140 / 150x150 / 100x180 / 200x1002.5MM -- 10.0 MM6M IN STOCK (OR CUSTOMIZED)
160x160 / 180x180 / 200x1503.5MM -- 11.0 MM6M IN STOCK (OR CUSTOMIZED)
200x200 / 250x150 / 100x2503.5MM -- 11.0 MM6M IN STOCK (OR CUSTOMIZED)
250x250 / 250x200 / 300x150 / 300x2004.5MM -- 15.0 MM6M IN STOCK (OR CUSTOMIZED)
300x300 / 350x200 / 350x250 /300x1504.5MM -- 15.0 MM6M IN STOCK (OR CUSTOMIZED)
350x350 350x300 / 450x250 / 400x300 / 500x2004.5MM -- 15.75 MM6M IN STOCK (OR CUSTOMIZED)
400x400 / 280x280 450x300 / 450x200 / 400x350 / 400x250 / 500x250 / 500x3004.5MM -- 15.75 MM6M IN STOCK (OR CUSTOMIZED)

Product Inventory

We are a professional steel dealer. With the support of the most professional steel manufacturers and a large number of customers, we can not only provide you with ordinary steel but also help you find very personalized steels, such as special steel grades, Special sizes, special craft shapes.


Packaging and Shipping

We adopt standard export shipping packaging and bundles steel strips according to the size of the square tube. According to our delivery experience, a 20-foot container can hold 22 tons of square tube, and a 40-foot container can hold 25 tons of square tube. For larger orders, we use bulk vessels to transport you, and the price is cheaper. Also, we can customize the packaging according to the needs of customers.


Container size

20ft STANDARD: 5895mm(Length)x2350mm(Width)x2392mm(High) 
40ft STANDARD: 12029mm(Length)x2350mm(Width)x2392mm(High)
40ft HIGH-CUBE:12024mm(Length)x2350mm(Width)x2697mm(High


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