SS400 Square Tube

SS400 steel pipe is a structural steel pipe under the Japanese JIS standard (Japanese Industrial Standards). In SS400, "SS" stands for "Steel" and "Structure," while "400" indicates the minimum tensile strength of 400 MPa. Thus, SS400 represents ordinary structural steel with a tensile strength of 400 MPa. Due to its moderate carbon content, it has good overall performance, with a well-balanced combination of strength, plasticity, and weldability.

SS400 steel pipe is one of GNEE's best-selling steel pipes. We offer SS400 structural rectangular pipes, SS400 structural round pipes, SS400 carbon steel pipes, and SS400 square welded pipes. Feel free to call us for consultation at any time.

SS400 Structural Carbon Steel Square Tube Specifications

OD: 15mm-400mm

WT: 0.8mm-12.0mm

Length: 1000mm-18000mm

Surface Treatment: Bared, Black Painted (varnish coating), Galvanized, With Oiled, 3 PE, FBE, corrosion resistant coating

Section Shape: Square and rectangular

Package: Bundle, In Bulk, Bags square galvanised steel hollow section tube, Clients' Requirements

Chemical Properties of SS400 Hollow Tube

C	Mn	P	S	N	Cu	CEV
max 0.22	max 1.5	max 0.04	max 0.04	max 0.012	max 0.55	max 0.42

Mechanical Properties of SS400 Square Metal Tubing

Minimum yield strength Reh MPa

Tensile strength Rm MPa

Minimum elongation – A Lo = 5,65 * √So (%)

Notch impact test

Steel grade

Nominal thickness mm

Nominal thickness mm

Nominal thickness mm

Temperature

Min. absorbed energy

≤16

>16 ≤40

>40 ≤63

>63 ≤80

>80 ≤100

>100 ≤125

>3 ≤100

>100 ≤125

>3 ≤40

>40 ≤63

>63 ≤100

>100 ≤125

°C

J

SS400

275

265

255

245

235

225

410-560

400-540

23

22

21

19

+20

27

SS400 Structural Pipe

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

About GNEE

Founded in 2008, GNEE Group has 16 years of experience in manufacturing and exporting steel pipes. Equipped with 20 steel pipe production lines and 30 production and testing devices, we ensure the quality of your steel pipes. Before leaving the factory, our steel pipes undergo various testing procedures, including chemical element analysis, hardness testing, yield testing, non-destructive testing, and eddy current testing. If customers have special requirements, we can provide third-party inspections. With excellent quality and service, GNEE steel pipes are exported to countries and regions such as Australia, France, Chile, Kazakhstan, and Indonesia, making us a well-known steel pipe supplier in Asia and Europe. If you need steel pipes, feel free to call us at any time.

 

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