HSn70-1B Brass Tube For Corrosive Liquids In High Strength And Corrosion Resistant Condenser
1. Description
The chemical element boron is added into hsn70-1b brass pipe, which has special physical and chemical properties. It is mainly used in condensing pipe series. The characteristic of hsn70-1b brass pipe is that under the condition of water quality in power plant, smooth, uniform, firm and dense protective film can be formed on the inner surface of copper pipe. In the long-term use of fresh water, it is not easy to scale, which is conducive to increase the thermal conductivity and service life of copper tube.
Our company's brass tube grades mainly include HAi77-2,HSn70-1, HSn70-1B, HSn70-1AB, H68A copper tube, fin tube and U-tube. The products are produced in strict accordance with the standard, and the finished products can be tested by the third party according to the customer's requirements. These copper tubes are mainly used in power plants, desalination, petrochemical, mechanical ships and automotive heat exchangers. We have rich production experience, professional technology, excellent equipment, superior quality, reasonable price, high-quality service, so that our products sell well all over the world, well received by customers.
2. Chemical Composition
| Grade | Chemical Composition | Impurity composition /%, ≤ |
| Cu | Sn | As | B | Ni | Mn | Zn | Fe | Pb | Ai | S |
| HSn70-1B | 69.0～71.0 | 0.8～1.3 | 0.03～0.06 | 0.015～0.02 | - | - | allowance | 0.1 | 0.05 | | | ≤0.3 |
| HSn70-1AB | 69.0～71.0 | 0.8～1.3 | 0.03～0.06 | 0.015～0.02 | 0.05～1.00 | 0.02～2.0 | allowance | 0.1 | 0.05 | | | ≤0.3 |
| HAi77-2 | 76～79 | | 0.02～0.06 | | 0.5 | | allowance | 0.06 | 0.07 | 1.8～2.5 | | —— |
| T2 | 99.9 | | 0.002 | | | | | 0.005 | 0.005 | | 0.005 | —— |
3. Physical Properties
| Grade | Supply Status | Specifications/mm | Standard |
| OD | Wall Thickness | Length |
| HAl77-2;HSn70-1; | soft(M)Semi hard(Y2) | 6～30 | 0.5～2 | ≤12000 | GB/T8890-2007 |
| HSn70-1B; |
| HSn70-1AB; |
| H68A;HSn70A; |
| BFe10-1-1 | Semi hard(Y2) | 9～12(20～35) | 0.75～1.5 | ≤2500 | GB/T8890-2007 |
| LF21Clad pipe |
4. Details Picture
