TORICH GB/T24187 BHG1 Precision Single Welded Steel Tubes In Condenser
Brand Name:TORICH
Certification:ISO 9001,ISO 14001,TS 16949
Model Number:GB/T24187
Minimum Order Quantity:5
Delivery Time:15-35 Work Days
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
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Ningbo Zhejiang China
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Suite 1004, Hongan Plaza, #258 Die Yuan Road, Yinzhou District, Ningbo City, China
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TORICH GB/T24187 BHG1 Precision Single Welded Steel Tubes In Condenser
Table1 The type, state and code of the steel tube surface
| Type | State | Code |
| Bright Surface | No coating on the inner and outer surface of steel pipe | SL |
| Copper plated surface | Copper plating on the outer surface of steel tube | Cu |
| Galvanized surface | Galvanized or zinc alloy on the outer surface of steel pipe | Zn |
| Double-sided copper plating surface | The inner and outer surfaces of the steel pipe are plated with copper | Cu/Cu |
| External galvanized inner copper plating surface | Galvanized or zinc alloy on the outer surface of steel pipe, copper plating on the inner surface | Zn/Cu |
a. Use electroplating, electroless or hot dip plating. b. Manufacture of steel strip with double-sided copper plating, and the quality of the coating at the weld line should be negotiated by both suppliers and suppliers. c. Manufacture of steel strip with double-sided copper plating. | ||
TABLE 2 Chemical Composition Of Steel Strip (Mass Fraction)%
| Category | C | Si | Mn | P | S |
| Cold rolled low carbon steel strip | ≤0.08 | ≤0.03 | ≤0.30 | ≤0.030 | ≤0.030 |
| Cold rolled ultra low carbon steel strip | ≤0.008 | ≤0.03 | ≤0.25 | ≤0.020 | ≤0.030 |
TABLE 3 Mechanical Properties Of Cold Rolled Low Carbon Steel Strip
Thickness /mm | Tensile Strength | Yield Strength | Elongation A/% |
| 0.25~<0.35 | ≥270 | ≥32 | |
| 0.35~<0.50 | ≥34 | ||
| ≥0.50 | ≥36 | ||
a Replace with when the yield phenomenon is not obvious. b Sample type of sample number D14 in GB/T 228-2002. | |||
TABLE 4 Mechanical Properties Of Cold Rolled Ultra-low Carbon Steel Strip
Thickness /mm | Tensile Strength | Yield Strength | Elongation A/% |
| ≤0.50 | ≥280 | 130~250 | ≥38 |
| >0.50 | ≥40 | ||
a Replace with when the yield phenomenon is not obvious. b Sample type of sample number P14 in GB/T 228-2002. | |||
TABLE 5 Mechanical properties of steel pipe
| Category | Tensile Strength | Yield Strength | Elongation A/% |
| Ordinary steel pipe(MA) | ≥270 | ≥180 | ≥14 |
| Soft steel tube(MB) | ≥230 | 150~220 | ≥35 |
a Replace with when the yield phenomenon is not obvious. b Sample type of sample number S7 in GB/T 228-2002. | |||
TORICH GB/T24187 BHG1 Precision Single Welded Steel Tubes In Condenser
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