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Help Center30*30*3 Square Tube/Hollow Section/Square Pipe
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| Standards | Steel Grade | Chemical composition(%) | Mechanical properties (heat treatment status) | |||||||||
| C | Mn | Si | S | P | Cr | Ni | Cu | Tensile strength | Yield strength | Elongation(%) | ||
| GB3094 | 10 | 0.07-0.13 | 0.35-0.65 | 0.17-0.37 | ≤ 0.035 | ≤ 0.035 | ≤ 0.15 | ≤ 0.30 | ≤ 0.25 | ≥ 335 | ≥ 205 | ≥ 24 |
| 20 | 0.17-0.23 | 0.35-0.65 | 0.17-0.37 | ≤ 0.035 | ≤ 0.035 | ≤ 0.25 | ≤ 0.30 | ≤ 0.25 | ≥ 390 | ≥ 245 | ≥ 20 | |
| 35 | 0.32-0.39 | 0.50-0.80 | 0.17-0.37 | ≤ 0.035 | ≤ 0.035 | ≤ 0.25 | ≤ 0.30 | ≤ 0.25 | ≥ 510 | ≥ 305 | ≥ 17 | |
| 45 | 0.42-0.50 | 0.50-0.80 | 0.17-0.37 | ≤ 0.035 | ≤ 0.035 | ≤ 0.25 | ≤ 0.30 | ≤ 0.25 | ≥ 590 | ≥ 335 | ≥ 14 | |
| Q345(A-E) | ≤ 0.20 | 1.00-1.60 | ≤ 0.55 | ≤ 0.035 | ≤ 0.035 | -- | -- | -- | ≥ 510 | ≥ 345 | ≥ 21 | |
Ourcompany specializes in production of various pipes for 6 years, An annual output over 1,500,000tons!
Our products are widely used in big projects domestic and abroad!
30*30*3mmSquare Tube/Hollow Section/Square Pipe
Best service!Excellent products! Competitive price! And Quick delivery !
** How long will it take to produce an order?
It is within 30days for the purchasing and production time with container order and 10days for the sample.
** What form of quotation do you offer?
FOB Tianjin, CIF and CNF Your destination
** What is your payment term?
Payment is 30% deposit, 70% before shipment .
** Does the sample for free or not?
The samples are free if they are common sizes, You need to pay for the freight .
** How do you guarantee the quality of the products?
All of our procedures are strictly operated under the ISO 9001:2008, and there are as many as 6 times of test during the production of each product to ensure the quality.
** How do you to package the product?
Wrapped with polywoven bags, we use steel belt to pack the outside, polywooden cases or wooden boxes for thin wall thickness can be offered if required
**How about the Third Party Inspection ?
We have been working with DNV,TUV,SGS,BV,CO,Lloyd's etc;
Inquiry now!
Send Inquiry to This Supplier
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