Whether the galvanized steel pipe is good
1. The appearance is smooth, free of zinc nodules and burrs, and silver white;
2. No hydrogen embrittlement and temperature hazard, which can ensure the mechanical properties of materials unchanged;
3. It can replace some processes requiring hot galvanizing;
4. Good corrosion resistance, neutral salt spray test up to 240 hours.
2、 Use of galvanized pipe
The delivery time of the galvanized strip greenhouse pipe factory is mostly in the late or early days, which temporarily presents the appearance of resources accumulation in the factory; There was a significant positive signal. The traders in the shopping mall were not active in picking up goods, which led to a large increase in the inventory of galvanized strip greenhouse pipes. At the same time, the operating rate of the galvanized strip greenhouse pipe plant remains at a high level. Due to the increase of production restriction due to environmental protection reasons, the maintenance of the galvanized strip pipe mall is stable on the whole. With the promotion of a series of actions, the production capacity of the galvanized strip pipe mall will gradually be controlled.
Welded steel pipe with hot-dip or electro galvanized coating on the surface of galvanized steel pipe. Galvanizing square tube can increase corrosion ability and extend service life. Galvanized pipes are widely used. In addition to pipeline pipes for low pressure fluids such as oil, they are also used as oil well pipes in the petroleum industry, especially in offshore oil fields, oil heaters for chemical coking equipment, pipes for coal distillate washing oil interchangers, and pipes for trestle pipe piles and support frames for mine tunnels. Galvanized steel pipes are divided into cold galvanized pipes and hot galvanized pipes. The former has been banned, and the latter has been initiated by the state to be used temporarily. Developed countries in the world began to develop new pipes, and continuously banned galvanized pipes. Galvanized pipe is a kind of galvanized steel pipe, which has the advantages of even coating, strong adhesion and long service life. The cost of galvanization is low, the appearance is not very lubricated, and its corrosion resistance is much different from that of hot-dip galvanized pipe.