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[China]
Trade Verify
Address: Suite 1004, Hongan Plaza, #258 Die Yuan Road, Yinzhou District, Ningbo City, China
Contact name:Richard SHEN
TORICH INTERNATIONAL LIMITED |
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Verified Suppliers
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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 maybe 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) |
Length Requirements
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.
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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