C68700 C71500 Alloy U Bend Tubes ASTM B111 Cold Drawn Seamless Copper
| Key Word | Seamless Mechanical Tube |
| Material | ASTM B111 |
| Production method | Cold Drawn + Bending |
| General size | OD: 19.05, 25 ,12.7;WT: 1.65 ,1.245 ,2.11 |
| Application | Heat Exchanger, Condenser, Superheater etc |
Chemical Requirement
| Steel Grade | C4430 | C4440 | C4450 | C68700 | C71500 |
| Cu | 70.0-73.0 | 70.0-73.0 | 70.0-73.0 | 76.0-79.0 | remainder |
| Tin | 0.9-1.2 | 0.9-1.2 | 0.9-1.2 | - | - |
| Al | - | - | - | 1.8-2.5 | - |
| Ni, incl Co | - | - | - | - | 29.0-33.0 |
| Pb max | 0.07 | 0.07 | 0.07 | - | 29.0-33.0 |
| Fe max | 0.06 | 0.06 | 0.06 | 0.06 | 0.4-1.0 |
| Zn max | remainder | remainder | remainder | remainder | 1.0 |
| Mn max | - | - | - | - | 1.0 |
| As | 0.02-0.06 | - | - | 0.02-0.06 | - |
| Sb | - | 0.02-0.10 | - | - | - |
| P max | - | - | 0.02-0.10 | - | - |
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
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.
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
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