- Overview
- Product Description
- Detailed Photos
- Product Parameters
- Packaging & Shipping
- Certifications
- Factory showing
- Company Profile
- FAQ
Basic Info.
Product Description
Square tube is a hollow square section light thin-walled steel pipe, also known as steel cold bending section. It is made of Q235 hot-rolled or cold-rolled strip or coil as the base material, which is formed by cold bending and then high-frequency welding. In addition to the thickening of the wall thickness of the hot-rolled extra-thick-walled square tube, its corner size and edge straightness have reached or even exceeded the level of the resistance-welded cold-formed square tube. It has good comprehensive mechanical properties, good weldability, cold and hot working properties and corrosion resistance, and has good low temperature toughness.The uses of square tubes include construction, machinery manufacturing, steel construction and other projects, shipbuilding, solar power brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, boiler construction, highway railings, Housing construction, pressure vessels, oil storage tanks, bridges, power station equipment, lifting and transportation machinery and other welded structural parts with higher loads, etc.
Easy to weld
Cost-effective
| Product Name | carbon steel welded seamless pipe for structure |
| Standard | API 5L,ASTM A213, A312, ASTM A269,ASTM A778, ASTM A789, DIN 17456,ASTM A106,ASTM A53,ASTM A36,DIN 17457,DIN 17459, JIS G3459,JIS G3463, GOS T9941, EN 10216, BS3605, GB13296,etc. |
| Material | Q195, Q235, Q345, 20#,20G,STPT410,STF410,A106,GR.B,A178C,A178D,P265GH,A53 GR.B,A135 GR.B,P265TR1,P265TR2,STPT480,A106,GR.C,A210C,Q195,Q235,Q345,ST35.8,ST45.8, ST52, etc |
| Usage | pipes are widely used in light industry,machinery, instrument and other industrial pipeline and mechanical structure parts, etc. |
| ENDS | Plain /Beveled / Thread with Coupling or cap /Chamfer /Groove /Screw |
| Type | Hot-rolled /Cold-rolled /Cold-drawing |
| Inspection | With hydraulic testing, eddy current, infrared test |
| Surface | Black painted, PE/PVC/PP coated, Galvanized, color coated, anti rust varnished,anti rust oiled, checkered, epoxy coating, etc. |
| Size | 10*10-500*500mm |
Product | Specification (mm) | Wall Thickness | Specification (mm) | Wall Thickness |
Square Tube
| 20*20 | 1.3-2.5 | 100*100 | 1.5-12 |
25*25 | 1.3-2.75 | 120*120 | 2.5-12 | |
30*30 | 1.3-2.75 | 125*125 | 2.5-12 | |
40*40 | 1.3-3.75 | 140*140 | 2.75-16 | |
50*50 | 1.3-5.75 | 150*150 | 2.75-16 | |
60*60 | 1.3-5.75 | 160*160 | 3.0-16 | |
70*70 | 1.3-5.75 | 180*180 | 3.0-16 | |
80*80 | 1.3-5.75 | 200*200 | 3.0-16 | |
90*90 | 1.3-5.75 | 250*250 | 4.75-16 |
Product | Specification (mm) | Wall Thickness | Specification (mm) | Wall Thickness |
Rectangular Tube
| 20*30 | 1.3-2.75 | 60*90 | 1.3-4.75 |
20*40 | 1.3-2.75 | 50*100 | 1.3-5.75 | |
25*40 | 1.3-2.75 | 50*150 | 1.3-5.75 | |
30*50 | 1.3-4.75 | 60*160 | 1.3-5.75 | |
30*60 | 1.3-4.75 | 100*150 | 2.5-16 | |
40*50 | 1.3-4.75 | 100*200 | 2.5-16 | |
40*80 | 1.3-4.75 | 150*300 | 4.5-16 | |
50*70 | 1.3-4.75 | 200*300 | 5.5-16 | |
50*80 | 1.3-4.75 | 200*400 | 5.5-16 |
Factory showing 
Shandong Xinchengyuan Import and Export Co., Ltd is a professional steel company engaged in the research, development, production, sale and service. It had five branch companies .Our annual sales nearly one billion, about 280,000 tons steel, It is located in Jinan with the convenient transportation access. In line with the development concept of quality conquer the world, service achievement future. We dedicate to strict quality control and thoughtful customer service, and our experienced staff members are always available to discuss your requirements and ensure every customer satisfaction. Our main products include PPGI ,galvanized steel , steel plate , round bar, steel pipe ,Stainless steel product ,angle bar, steel pile ,H beam ,I beam, angle, Channel flat steel etc . With double guarantee of service and management system. Main market distributes in North America, South America, Africa, Southeast Asia as well as Oceania. Xinchengyuan responds positively to the national one belt and one road strategy, and arranged overseas layout in advance to service the countries and customers alongside the route better and higher efficiency. Up to now, we have established long-term and win-win partnership with many large steel manufacturers, such as Baosteel, Laiwu Steel, Rizhao Steel, Handan Iron and Steel, Angang and Maanshan Iron and Steel. We always foucesed on the intergration of reasources , in line with the concept of win win cooperation . Sincerely wish to build a long and regular business with you forever.
***Are you factory?
A:Yes,our factory are located in Shandong province.
***What's the delivery time?
*General specification of product is about 14days after received advance payment.
*special requirement need about 25-30days.
***Why choose us?
We choose the safe and reliable shipping company for the customers, short shipping
date and transportation safety.
Our account is under the supervision of alibaba, which guarantees the timely delivery
and good quality.
***What's your market area?
We have exported to America, Canada, Brazil, Chile, Colombia and other American countries.Britain, Russia and other European countries.Ukraine, Thailand, myanmar,
Vietnam, India and other Asian countries.South Africa, Cameroon, Ghana, somalia and
other African countries.
Our export experience is much, familiar with different market demand, can help customers
avoid a lot of trouble.
More info about 201 304 316 stianless steel tube 2B surface finished hot sale kindly to contact