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O.D mm | W.T mm | O.D mm | W.T mm | O.D mm | W.T mm | O.D mm | W.T mm |
20*20 | 1.3 | 60*120 80*100 90*90 | 1.5 | 180*180 | 3.0 | 300*800 400*700 550*550 500*600 | |
1.4 | 1.7 | 3.5-3.75 | 9.5-9.75 | ||||
1.5 | 1.8 | 4.5-4.75 | 11.5-11.75 | ||||
1.7 | 2.0 | 5.5-7.75 | 12-13.75 | ||||
1.8 | 2.2 | 9.5-9.75 | 15-50 | ||||
2.0 | 2.5-4.0 | 11.5-11.75 | |||||
20*30 25*25 | 1.3 | 4.25-4.75 | 12-25 | ||||
1.4 | 5.0-6.3 | 100*300 150*250 200*200 | 2.75 | 300*900 400*800 600*600 500*700 | |||
1.5 | 7.5-8 | 3.0-4.0 | 9.5-9.75 | ||||
1.7 | 50*150 60*140 80*120 100*100 | 1.5 | 4.5-9.75 | 11.5-11.75 | |||
1.8 | 1.7 | 11.5-11.75 | 12-13.75 | ||||
2.0 | 2.0 | 12.5-12.75 | 15-50 | ||||
2.2 | 2.2 | 13.5-13.75 | |||||
2.5-3.0 | 2.5-2.75 | 15.5-30 | |||||
20*40 25*40 30*30 30*40 | 1.3 | 3.0-4.75 | 150*300 200*250 | 3.75 | 300*1000 400*900 500*800 600*700 650*650 | ||
1.4 | 5.5-6.3 | 4.5-4.75 | |||||
1.5 | 7.5-7.75 | 5.5-6.3 | 9.5-9.75 | ||||
1.7 | 9.5-9.75 | 7.5-7.75 | 11.5-11.75 | ||||
1.8 | 11.5-16 | 9.5-9.75 | 12-13.75 | ||||
2.0 | 60*160 80*140 100*120 | 2.5 | 11.5-11.75 | 15-50 | |||
2.2 | 2.75 | 13.5-30 | |||||
2.5-3.0 | 3.0-4.75 | 200*300 250*250 | 3.75 | 400*1000 500*900 600*800 700*700 | |||
3.25-4.0 | 5.5-6.3 | 4.5-4.75 | |||||
25*50 30*50 30*60 40*40 40*50 40*60 50*50 | 1.3 | 7.5-7.75 | 5.5-6.3 | 9.5-9.75 | |||
1.4 | 9.5-16 | 7.5-7.75 | 11.5-11.75 | ||||
1.5 | 75*150 | 2.5 | 9.5-9.75 | 12-13.75 | |||
1.7 | 2.75 | 11.5-11.75 | 15-50 | ||||
1.8 | 3.0-4.75 | 12-13.75 | |||||
2.0 | 4.5-4.75 | 15.5-30 | |||||
2.2 | 5.5-6.3 | 200*400 250*350 300*300 | 4.5-6.3 | 500*1000 600*900 700*800 750*750 | |||
2.5-3.0 | 7.5-7.75 | 7.5-7.75 | 9.5-9.75 | ||||
3.25-4.0 | 9.5-16 | 9.5-9.75 | 11.5-11.75 | ||||
4.25-4.75 | 80*160 120*120 | 2.5 | 11.5-11.75 | 12-13.75 | |||
5.0-5.75 | 2.75 | 12-13.75 | 15-50 | ||||
5.75-6.3 | 3.0-4.75 | 15.5-30 | |||||
40*80 50*70 50*80 60*60 | 1.3 | 5.5-6.3 | 200*500 250*450 300*400 350*350 | 5.5-6.3 | 500*1100 600*1000 700*900 800*800 | ||
1.5 | 7.5-7.75 | 7.5-7.75 | 11.5-11.75 | ||||
1.7 | 9.5-9.75 | 9.5-9.75 | 12-13.75 | ||||
1.8 | 11.5-20 | 11.5-11.75 | 15-50 | ||||
2.0 | 100*150 | 2.5 | 12-13.75 | ||||
2.2 | 2.75 | 15.5-30 | |||||
2.5-3.0 | 3.0-4.75 | 280*280 | 5.5-6.3 | 600*1100 700*1000 800*900 850*850 | |||
3.25-4.0 | 5.5-6.3 | 7.5-7.75 | 9.5-9.75 | ||||
4.25-4.75 | 7.5-7.75 | 9.5-9.75 | 11.5-11.75 | ||||
5.0-6 | 9.5-9.75 | 11.5-11.75 | 12-13.75 | ||||
40*100 60*80 70*70 | 1.3 | 11.5-20 | 12-13.75 | 15-50 | |||
1.5 | 100*200 120*180 150*150 | 2.5 | 15.5-30 | ||||
1.7 | 2.75 | 350*400 300*450 | 7.5-7.75 | 700*1100 800*1000 900*900 | |||
1.8 | 3.0-7.75 | 9.5-9.75 | 11.5-11.75 | ||||
2.0 | 9.5-9.75 | 11.5-11.75 | 12-13.75 | ||||
2.2 | 11.5-20 | 12-13.75 | 15-50 | ||||
2.5-3.0 | 100*250 150*200 | 3.0 | 15.5-30 | ||||
3.25-4.0 | 3.25-3.75 | 200*600 300*500 400*400 | 7.5-7.75 | 800*1100 900*1000 950*950 | |||
4.25-4.75 | 4.25-7.75 | 9.5-9.75 | 11.5-11.75 | ||||
5.0-6.3 | 9.5-9.75 | 11.5-11.75 | 12-13.75 | ||||
50*100 60*90 60*100 75*75 80*80 | 1.3 | 11.5-11.75 | 12-13.75 | 15-50 | |||
1.5 | 12-25 | 15.5-40 | |||||
1.7 | 140*140 | 3.0-3.75 | 300*600 400*500 450*450 | 7.5-7.75 | 900*1100 1000*1000 800*1200 | ||
1.8 | 4.5-6.3 | 9.5-9.75 | |||||
2.0 | 7.5-7.75 | 11.5-11.75 | 20-60 | ||||
2.2 | 9.5-9.75 | 12-13.75 | |||||
2.5-3.0 | 11.5-25 | 15.5-40 | |||||
3.25-4.0 | 160*160 | 3.0 | 400*600 500*500 | 9.5-9.75 | 1100*1000 1100*1100 | ||
4.25-4.75 | 3.5-3.75 | 11.5-11.75 | 20-60 | ||||
5.0-5.75 | 4.25-7.75 | 12-13.75 | |||||
7.5-8 | 9.5-25 | 15.5-40 |

Our products | No impurity |
No rust | |
No burrs | |
Pipe end can be threaded,beveled,swaged, enlarged,flattened | |
Pipe body can be oiled,painted,powder coated or other requests upon customers | |
PVC Coated outside pipe,PVC coated inside and outside pipe |
How to select steel pipe?
Selecting the appropriate square steel pipe for your project involves considering various factors to ensure the pipe meets the required specifications and performs its intended function effectively. Here is a guide to help you make the right choice:
1. Understanding Square Steel Pipe Dimensions
Square steel pipes are available in a variety of sizes, each defined by its dimensions. It's essential to refer to a square steel pipe size chart to understand the different dimensions available. This will help you select the right size for your specific application, whether it's construction, fencing, furniture manufacturing, or the automotive industry .
2. Consider Load-Bearing Requirements
Determine the weight and load the pipe will bear to ensure the selected size can handle the intended application. This is crucial for applications where the pipe will support heavy structures or machinery .
3. Account for Space Limitations
Measure the available space where the pipe will be installed to ensure the chosen size fits appropriately. This is particularly important in confined areas or where precise measurements are required for the project's design .
4. Review Project Specifications
Consult project plans and specifications to identify the required square steel pipe dimensions. This will help ensure that the pipe you select aligns with the overall project requirements and standards .
5. Material Selection
The material of the square steel pipe is defined by its type, joint efficiency, wall thickness, and manufacturing standard. Common material names include carbon steel, stainless steel, and chrome-moly steel. Each material type has specific grades and standards, such as ASTM A106 for carbon steel or ASTM A312 for stainless steel .
6. Pipe Wall Thickness
Consider the standard for wall thickness, which may be expressed as different schedules or plate thickness. The minimum wall thickness should be able to withstand its own weight with minimum deflection, calculated for the design temperature and pressure .
7. Piping End Connections
Determine the type of end connections required for your piping system. For socket weld systems, the pipe should be square cut, while butt-welding ends should comply with ASME B16.25 standards .
8. Lengths and Galvanizing
Specify the required lengths of the pipe and whether galvanizing is necessary. Galvanizing, when required, should be applied in accordance with ASTM A53 .
9. Special Requirements
There may be special requirements for the base material, fabrication, or inspection. These should be clearly indicated in the purchase description, including the need for mill test and chemical analysis reports for alloy pipes .
10. Industry-Specific Considerations
Different industries have specific needs. For example, the oil and gas industry often requires pipes that can handle high pressure and corrosive environments, making seamless pipes a preferred choice. In contrast, the construction industry may opt for welded pipes due to their cost-effectiveness .
By considering these factors, you can select the square steel pipe that best fits your project's needs, ensuring both structural integrity and longevity. Remember to consult with reputable suppliers -YUANTAI DERUN to acquire square steel pipes that meet your specific requirements .


Yuantai Derun Group's products cover various specifications from 20*20*1.0-1200*1500*50mm,LASW round pipes,ERW welded pipes ,zinc,aluminum and magnesium products ,with a total production capacity of 10 million tons,of which square and rectangular tube production capacity is 6 million tons Ranking first in China and the world ,it is also the world's most professional,largest and most advanced R&D manufacturer of square and rectangular tubes.
Why choose Yuantai Derun?(rectangular tube manufacturer selected into the top ten steel tube brands in China.)
-1. We have European standard, American standard, Japanese standard and other full series of product certification, from raw materials to finished products through 219 to test procedures, neither let a unqualified steel pipe into the market, excellent quality, won the market praise.
-2. Preferential price, because it is factory direct sales, we will sell to you with the thinnest profit, to achieve high quality and low price products
-3. Strong supply capacity and production capacity, annual output of more than 5 million tons, no matter how much your demand, guarantee the delivery time
-4. More than 20 years of manufacturing experience and cooperation experience in major projects all over the world, give your order double insurance
Q1: How can I get a quotation from you ?
A1:You can leave us message, and we will reply every message in time. Or we may talk on line by We Chat / Whats app/Email.
Q2:Can I get samples before order ?
A2:Yes, of course. Usually our samples are free. we can produce by your samples or technical drawings. But the customer will pay the freight.
Q3:What product information must I provide before making a purchase ?
A3:Please provide the grade,width,thickness,and surface treatment requirement,as well as the quantities you require.
Q4:What about product pricing information?
A4:Prices vary due to changes in raw materials on a regular basis.
Q5:Can I have a visit to your factory?
A5: Of course.Our factory located at No.1,Hengtong Road,Daqiuzhuang Industrial Zone,Tianjin,China.Customers that from all over the world are welcomed to our factory.
Q6:How long is your lead time?
A6:If it is in stock, it is usually 5-10 days. Or, if there is no inventory, 15 days, depending on the quantity.
Q7:What are your payment terms?
A7:Payment<=1000USD, 100% in advance. Payment>=1000USD 30% T/T in advance ,balance before shippment.If you have another question, please feel free to contact us as below.