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carbon steel pipe, carbon steel square tube, square tube, size chart

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carbon steel pipe, carbon steel square tube, square tube, size chart
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Carbon Steel Square Tube Size Chart

Date:2025-06-09View:30Tags:carbon steel pipe, carbon steel square tube, square tube, size chart

Carbon steel square tubes are square tubes made of carbon steel and are a type of carbon steel pipe. Carbon steel pipes refer to steel tubes made of carbon steel materials, and carbon steel square tubes are a specific shape of this type of steel tube, that is, a steel tube with a square cross-section.

Carbon steel square tubes are made by straightening carbon steel plates through a flattening machine and then welding them into shape. The models and sizes of carbon steel square tubes are generally classified and marked according to international standards or national standards.


Types of carbon steel square tubes

Carbon steel square tubes can be divided into hot-rolled square tubes, cold-rolled square tubes, welded square tubes, seamless square tubes and other types according to different uses and processing techniques. The following is a table of common carbon steel square tube types:


1. Hot-rolled square tubes

The carbon steel plate is heated to a high temperature and rolled into shape.


2. Cold-rolled square tubes

The carbon steel plate is rolled into shape at room temperature.


3. Welded square tube

The carbon steel plate is processed into a welded pipe by a flattening machine, shearing machine and other processing equipment.


4. Seamless square tube

It is processed and formed by seamless steel pipe processing equipment.


Carbon steel square tube models and sizes

The following is a table of common carbon steel square tube models and sizes:


Model

Size

10×10

0.5-3.0mm

12×12

0.5-3.0mm

14×14

0.5-3.0mm

15×15

0.5-3.0mm

16×16

0.5-3.0mm

17×17

0.5-3.0mm

18×18

0.5-3.0mm

19×19

0.5-3.0mm

20×20

0.5-3.0mm

22×22

0.5-3.0mm

25×25

0.5-3.0mm

28×28

0.5-3.0mm

30×30

0.5-3.0mm

35×35

0.5-3.0mm

38×38

0.5-3.0mm

40×40

0.5-3.0mm

45×45

0.5-3.0mm

50×50

0.5-3.0mm

60×60

0.5-3.0mm

70×70

0.5-3.0mm

80×80

0.5-3.0mm

90×90

0.5-3.0mm

100×100

0.5-3.0mm


Parameters and specifications of carbon steel square tubes

The following is a table of common carbon steel square tube specifications, including size, parameters, types and other information:


Spec

Size

Parameter

Type

10*10-600*600mm

0.6-25mm

Q195Q215Q235Q345BGR.B

Square tube, rectangular tube, oval tube, special-shaped tube

20*20-500*500mm

0.6-25mm

Q195Q215Q235Q345BGR.B

Square tube, rectangular tube, oval tube, special-shaped tube

30*30-400*400mm

0.6-20mm

Q195Q215Q235Q345BGR.B

Square tube, rectangular tube, oval tube, special-shaped tube

40*40-300*300mm

1.0-20mm

Q195Q215Q235Q345BGR.B

Square tube, rectangular tube, oval tube, special-shaped tube

50*50-200*200mm

1.2-12mm

Q195Q215Q235Q345BGR.B

Square tube, rectangular tube, oval tube, special-shaped tube

Note: The above specifications are for reference only, and the specific specifications are subject to actual conditions.


Summary

Through the above introduction, I believe you have a more comprehensive understanding of the specifications and dimensions of carbon steel square tubes. When choosing carbon steel square tubes, you can choose the appropriate square tube model, size, parameters, specifications, types, etc. according to your needs and requirements to meet your usage needs.


Read more: Roughness of carbon steel pipe or Finishing defect of seamless carbon steel pipe and its prevention