Smooth / Oiled Surface Round Structural Steel Tubing Length 1 - 12m Gb/t699
Product Details
structural steel tubing
,structural steel square tubing
TORICH GB/T699 Quality Carbon Structural Steel for Structure Tube and Pipe
Product Description:
Standard: GB/T699
Size Range: OD: 4-420mm
WT: 0.5-50mm
Length: 1-12m
Steel Grade: 08F, 10F, 15F, 10#, 20#, 45#, 15Mn, 20Mn, 25Mn etc
Features:
Smooth inner and outer surfaces
Available in a variety of outer diameter sizes
Good raw material quality
Narrow tolerance
Deliver condition:
1). Hot Rolled
2). Annealed
3). Normalizing
4). High temperature tempering
Steel Grade and Chemical Compositions:
| Grade | C | Si | Mn | Cr | Ni | Cu |
| max | ||||||
| 08F | 0.05-0.11 | ≤0.03 | 0.25-0.50 | 0.10 | 0.30 | 0.25 |
| 10F | 0.07-0.13 | ≤0.07 | 0.25-0.50 | 0.15 | 0.30 | 0.25 |
| 15F | 0.12-0.18 | ≤0.07 | 0.25-0.50 | 0.25 | 0.30 | 0.25 |
| 08 | 0.05-0.11 | 0.17-0.37 | 0.35-0.65 | 0.10 | 0.30 | 0.25 |
| 10 | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | 0.15 | 0.30 | 0.25 |
| 15 | 0.12-0.18 | 0.17-0.37 | 0.35-0.65 | 0.25 | 0.30 | 0.25 |
| 20 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.25 | 0.30 | 0.25 |
| 25 | 0.22-0.29 | 0.17-0.37 | 0.50-0.80 | 0.25 | 0.30 | 0.25 |
| 30 | 0.27-0.34 | 0.17-0.37 | 0.50-0.80 | 0.25 | 0.30 | 0.25 |
| 35 | 0.32-0.39 | 0.17-0.37 | 0.50-0.80 | 0.25 | 0.30 | 0.25 |
| 40 | 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | 0.25 | 0.30 | 0.25 |
| 45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.25 | 0.30 | 0.25 |
| 15Mn | 0.12-0.18 | 0.17-0.37 | 0.70-1.00 | 0.25 | 0.30 | 0.25 |
| 20Mn | 0.17-0.23 | 0.17-0.37 | 0.70-1.00 | 0.25 | 0.30 | 0.25 |
| 25Mn | 0.22-0.29 | 0.17-0.37 | 0.70-1.00 | 0.25 | 0.30 | 0.25 |
| 30Mn | 0.27-0.34 | 0.17-0.37 | 0.70-1.00 | 0.25 | 0.30 | 0.25 |
| 45Mn | 0.42-0.50 | 0.17-0.37 | 0.70-1.00 | 0.25 | 0.30 | 0.25 |
| ... | ... | ... | .. | ... | ... | ... |
QUALITY CONTROL
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking for Precision Steel Tube Cold Drawn Carbon Seamless Steel Pipe DIN2391 St35 St45 St37.0 St37.4 St52.0 St30Si
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.
FAQ:
Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us
TORICH GB/T699 Quality Carbon Structural Steel for Structure Tube and Pipe
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