Mild low carbon black iron square tube
Product basic information
| Specification/mm | Thickness/mm | Specification/mm | Thickness/mm |
| 10*20 | 0.5-2.0 | ||
| 10*30 | 0.5-2.0 | ||
| 20*30 | 0.5-3.0 | 100*50 | 1.0-5.0 |
| 40*20 | 0.5-3.0 | 100*60 | 1.5-5.0 |
| 50*20 | 0.6-2.0 | 50*25 | 0.6-2.0 |
| 75*25 | 0.7-2.0 | 70*20 | 0.7-2.0 |
| 40*30 | 1.2-3.0 | 100*80 | 1.5-5.0 |
| 50*25 | 1.5-3.0 | 120*50 | 2.0-5.0 |
| 50*30 | 0.7-4.0 | 120*60 | 2.0-5.0 |
| 60*30 | 0.7-4.0 | 120*80 | 2.0-5.0 |
| 70*30 | 0.7-2.5 | 140*80 | 2.5-6.0 |
| 60*40 | 0.7-4.0 | 160*80 | 2.75-5.0 |
| 70*50 | 1.5-4.0 | 100*150 | 2.75-5.0 |
| 80*40 | 0.9-4.0 | 100*200 | 2.75-5.0 |
| 80*60 | 1.7-5.0 | 200*300 | 2.75-14 |
| 90*50 | 1.7-5.0 | 200*400 | 2.75-14 |
| 90*60 | 1.5-5.0 | 300*400 | 2.75-14 |
| 100*40 | 1.5-5.0 | 300*500 | 2.75-14 |
Product pictures
Product application
Mechanical manufacture, construction field, metallurgy industry, farm vehicles, agriculture
greenhouse, automotive industry, railway, highway guardrail, container frame, furniture,
decoration, steel structure etc.
Inspection equipment

Packing: In bundle.
Loading port: Tianjin,China.
Shipment:usual length ≤5.8m by 20'GP,6m-12m by 40'GP(some sizes with 6m L can be into 20'GP).
Our company have all kinds of professional quality in product test technology to ensure
our product high quality.


Our Services
![]() | 1.Special design avaliable according to requirements. 2.All production processes are under ISO 9001-2008 strictly 3.Free sample 4.Acceptable for any third party inspection(SGS,BV...) 5.OEM is ok. 6.Visit factory any time. |
FAQ
Q1:What about the quality?
A:Third party inspections are always welcomed.as part of our dedication to the industry, we do
make arrangements for such inspections-ABS,DNV,BV,ect.
Q2: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock,
it is according to quantity.
Q3:Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q4:May I customize the steel pipe?
A:Yes, you can, we can manufacture according to your requirement, you can send the CAD or
design drawing to us.
Q5:Any Value-added Services?
A:Fottunately for you,we are very experience in this industry.we have equipped our warehouse
with the necessities to perform in-house painting,coating,and pipe cutting.
Q6: How about the trade terms?
A: EXW, FOB, CFR, CIF will be accepted.

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