Copper Sleeve Crimp Fitting, brass body with copper sleeves, which can connect both Pex-a pipe and Pex-b pipe with size 16mm*2.2mm, 20mm*2.8mm, 25mm*3.5mm and 32mm*4.4mm. It, made of DZR brass, meets Australian WaterMark Standard, for water and heating system. Copper Sleeve Crimp Fitting, Male Elbow, can connect both pipe and female thread product at the corner. Product size: 16mmx1/2”, 20mmx1/2”, 20mmx3/4”, 25mmx3/4”, 25mmx1” and 32mmx1”.
The brass tube itself is sensitive to stress corrosion cracking. When there is a sufficiently large tensile stress and a corrosive medium, it will cause stress corrosion cracking. It has been shown that the brass tube in the emptying area of the condenser is cracked, and there is a large tensile stress in some copper tubes. In addition, the content of the emptying area is high. After a period of operation, the stress corrosion continues to increase, which eventually leads to cracking of the copper tube. In recent years, cracks have also been found on the steam side of some copper tubes in the eddy current inspection of copper tubes in service condensers. Most of them are brass tubes located in the emptying area. The cracks are mainly horizontal, and there are a few longitudinal cracks. Some cracks are appropriately small. It is difficult to find in the leak inspection, which constitutes a long-term overrun of the quality of soda, which is very harmful. Condenser equipment during shutdown and standby, because there is water in the equipment, and the copper tube directly touches the air, the corrosion rate of the equipment during shutdown and standby is much greater than the corrosion during operation. Choose to stop use for more than 3 days, empty the water side, open the manhole door to ventilate and dry; stop for a short period of time, adhere to the operation of the pump, avoid the accumulation of suspended matter in the circulating water, and other methods to slow down the corrosion of the condenser.
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