The square steel pipes refers to a long, hollowed cylinder with
rectangular or square cross section. It is made of strip steel.
Firstly a coil of steel strip is unwound, flattened, bent and
welded to form the desired profile. Then the section is cut to the
required length.
Sometimes also referred to as box section, our square hollow
section exhibits the same flexural strength and tensile strength as
the solid round tube while having lighter weight than the latter.
Durable and dependable, the box section does have a temptation, due
also to the cheap price. Plenty of applications exist for the box
section. The product can be used to make automobile, industrial
machinery, railway, highway guardrail, agricultural greenhouse,
container framework, furniture, and other steel structure.
Not only are the standard square hollow sections available, we also
can hand make bespoke products according to the typical industrial
applications.
General Process Flow
| Diameter (mm) | Thickness (mm) | Diameter (mm) | Thickness (mm) | Diameter (mm) | Thickness (mm) |
| 30×30 | 2-4 | 120×120 | 2-14 | 250×250 | 8-25 |
| 40×40 | 2-4 | 125×125 | 2-14 | 255×255 | 8-25 |
| 50×50 | 2-5 | 130×130 | 2-14 | 258×258 | 8-25 |
| 60×60 | 2-5 | 135×135 | 8-14 | 260×260 | 8-25 |
| 70×70 | 2-5 | 140×140 | 8-20 | 280×280 | 8-25 |
| 75×75 | 2-5 | 150×150 | 8-22 | 300×300 | 9-25 |
| 80×80 | 2-8 | 160×160 | 8-22 | 350×350 | 9-25 |
| 90×90 | 2-9 | 180×180 | 8-22 | 360×360 | 9-25 |
| 100×100 | 2-14 | 200×200 | 8-25 | 400×400 | 9-25 |
| 110×110 | 2-14 | 220×220 | 8-25 | | |
| 115×115 | 2-14 | 240×240 | 8-25 | | |
| Diameter (mm) | Thickness (mm) | Diameter (mm) | Thickness (mm) | Diameter (mm) | Thickness (mm) |
| 60×20 | 2-3 | 80×40 | 2-6 | 110×60 | 5-8 |
| 60×30 | 2-3 | 90×40 | 2-6 | 110×70 | 5-10 |
| 60×40 | 2-6 | 90×50 | 2-6 | 120×60 | 5-8 |
| 70×20 | 2-3 | 100×20 | 2-4 | 120×80 | 5-10 |
| 70×30 | 2-3 | 100×30 | 2-4 | 120×100 | 5-14 |
| 70×40 | 2-6 | 100×40 | 2-4 | 125×90 | 5-10 |
| 70×50 | 2-6 | 100×50 | 2-6 | 125×100 | 5-14 |
| 75×45 | 2-6 | 100×80 | 4-9 | 130×120 | 5-14 |
| | | | 140×80 | 5-6, 8-10 |
| Diameter (mm) | Thickness (mm) | Diameter (mm) | Thickness (mm) | Diameter (mm) | Thickness (mm) |
| 180×100 | 5-14 | 300×200 | 7-25 | 400×250 | 7-20 |
| 200×100 | 6-18 | 300×250 | 7-25 | 400×300 | 7-25 |
| 200×150 | 5-6,8-25 | 320×200 | 7-25 | 420×350 | 7-25 |
| 250×100 | 5-14 | 350×100 | 7-18 | 450×150 | 7-18 |
| 250×200 | 6-25 | 350×200 | 7-25 | 450×250 | 7-22 |
| 250×225 | 6-25 | 350×250 | 7-25 | 500×300 | 7-25 |
| 300×100 | 7-18 | 350×300 | 7-25 | 600×200 | 7-18 |
| 300×150 | 7-18 | 400×200 | 7-18 | 600×400 | 8-25 |
1. Material: Q195, Q235, Q345, 20#, 16Mn, ST37/44/ST52, ASTM
A53/106, STKR490/STKR400, ASTM A500 GR, S355, S275, S235
2. Standards: JISG 3466, DIN EN 10210, DIN EN10219, ASTM A500, GB/T
3094-2000, GB/T 6728-2002
3. Applications: scaffolding, machinery, container, hall structure,
offshore oil field, sea trestle, motorcar cassis, airport
structure, shipbuilding, automobile axle pipe and so on.
4. Packing: in bundles with strong steel strips or according to
customers' requests
5. Surface: oiled or black painted to prevent rust
6. OEM service is available, too.
7. Certificates: CE,CCS, FPC
We are an experienced, China-based square hollow section
manufacturer. In addition to the box section, we also supply
high-quality spiral pipe, corrosion-resistant pipe, and pipe
casing. Our premium steel pipe products have seen wide use in
transferring oil, natural gas, and natural gas to power plant and
reservoir. If you have any question about our products, contact us
today to see if there is anything we can do for you.
