Product Description
TORICH ASTM A254 Copper Brazed Steel Tubing for general engineering uses
| Product Name | Copper Brazed Steel Tubing for general engineering uses |
| Standard | ASTM A254, A370, E30, E59 |
| Techinique | Copper Brazed |
| Type | Single-Strip Type, Double-Strip Type |
| Test | Expansion Test, Bend Test, Pressure Proof Tests, Flare Test |
| End Finish | Finished tubing shall have smooth ends free of burrs |
| Application | automotive, refrigeration, stove industries for fuellines, brakelines, oillines, heating and coolin gunits |
| Coating | Tubing may be furnished with a copper coating on the inside and outside surfaces, at the option of the manufacturer |
Chemical Requirements Tensile Requirements
| Element | Composition, % | Property | Requirement |
| Carbon | 0.05 to 0.15 | Tensile strength, min, psi (MPa) | 42000 (290) |
| Manganese | 0.27 to 0.63 | Yield strength, min, psi (MPa) | 25000 (172) |
| Phosphorus, max | 0.035 | Elongation in 2 in. (50.8mm) min, % | 25 |
| Sulfur, max | 0.035 | | |
Outside Diameter Requirements
| Specified Outside Diameter, in. (mm) | Variations, in. (mm) |
| Plus or Minus |
| Under 3/16 (4.76) | 0.002 (0.051) |
| 3/16 (4.76) through 3/8 (9.53) | 0.003 (0.076) |
| 7/16 (11.1) through 5/8 (15.9) | 0.004 (0.102) |
Wall Thickness Requirements
| Specified Wall Thickness, in. (mm) | Variations, in. (mm) |
| Plus or Minus |
| 0.020 (0.51) through 0.030 (0.76) | 0.003 (0.08) |
| 0.031 (0.79) through 0.049 (1.24) | 0.0035 (0.09) |
| Specified Cut Length, in. (mm) | Variations, in. (mm) |
| 18 (0.46) and under | ±0.03 (±0.76) |
| Over 18 (0.46) through 40 (1.02) | ±0.06 (±1.52) |
| Over 40 (1.02) through 80 (2.03) | ±0.12 (±3.05) |
| Over 80 (2.03) through 120 (3.05) | ±0.25 (±6.35) |
| Over 120 (3.05) | +1.00 (+25.4), -0.0 |
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.
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 ASTM A254 Copper Brazed Steel Tubing for general engineering uses
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