Dendrobium candidum is a very valuable Chinese herbal medicine. In the past, it was mainly collected through the wild. However, due to the scarcity of wild resources, in order to meet the needs of the market, modern cultivation is mainly carried out by artificial planting. The application of the small automatic weather station in the scientific planting of Dendrobium candidum provides data support for guiding the risk avoidance during the planting process of Dendrobium candidum, and carrying out reasonable and effective cultivation activities, so that the planting yield and quality of Dendrobium candidum are more guaranteed. Dendrobium candidum has high environmental requirements and suitable environmental conditions are the basis for successful planting of Dendrobium candidum. Therefore, in order to plant Dendrobium candidum, we must pay close attention to changes in the climate environment, and judge whether it is appropriate according to the monitoring results and make timely adjustments. The small automatic weather station can collect meteorological parameters such as temperature, humidity, light intensity, wind speed and direction, and rainfall in the air. The instrument has high automation degree and the meteorological environment is comprehensive. It is applied to the monitoring of Dendrobium candidum planting, Dendrobium candidum. Planting management can be carried out in full accordance with scientific data, greatly improving the scientific and technological management level of Dendrobium candidum planting. Studies have shown that the suitable growth temperature of Dendrobium candidum is 15~28 °C, and the shade of Dendrobium candidum in the growing season is about 60%. In addition, water management is also one of the key links in the cultivation process of Dendrobium candidum. Therefore, to carry out the cultivation of Dendrobium candidum, it is necessary to control the environment such as temperature, soil moisture and illuminance. The application of small automatic weather station provides scientific support for the fine management of Dendrobium candidum growth process. The instrument is used to closely monitor various environmental changes during the growth process of Dendrobium candidum, which not only avoids the bad production caused by harsh natural environment. The impact, but also improved the timeliness and effectiveness of environmental regulation, promoted Dendrobium candidum, and achieved a successful high-quality Dendrobium candidum planting, planting benefits are considerable. Seamless carbon steel pipes are made of steel ingots or solid billets through perforation to make capillaries, which are then hot-rolled, cold-rolled or cold-drawn. The raw material of carbon Steel Pipe is a round tube blank, which is cut by a cutting machine into a billet with a length of about 1 meter, and sent to a furnace for heating through a conveyor belt. The billets are fed into the furnace and heated at about 1200 degrees Celsius. The fuel is hydrogen or acetylene. Furnace temperature control is a critical issue. After the round tube blank is released from the furnace, it is pierced through a pressure punching machine. Generally, the more common punching machine is the conical roller punching machine. This kind of punching machine has high production efficiency, good product quality, large amount of perforation and diameter expansion, and can wear a variety of steel grades. After perforation, the round tube blank is successively cross-rolled, continuously rolled or extruded by three rolls. Carbon Steel Tube, Mild Steel Pipe, Hot Rolled Steel Pipe, Weld Steel Pipe Shandong Guanzhou Iron and Steel Group Co., Ltd. , https://www.guanzhouiron.com
1. Seamless steel pipe for structure (GBT8162-2008). Mainly used for general structure and mechanical structure. Its representative material (brand): carbon steel, 20, 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.
2. Seamless steel pipes for conveying fluids (GBT8163-2008). It is mainly used for conveying Fluid Steel Pipe in engineering and large-scale equipment. The representative material (grade) is 20, Q345, etc.
3. Seamless steel pipes for low and medium pressure boilers (GB3087-2008) are used to manufacture various structures of low and medium pressure boiler superheated steam pipes, boiling water pipes and superheated steam pipes, large smoke pipes, small smoke pipes and arch bricks for locomotive boilers Hot-rolled and cold-drawn (rolled) seamless steel pipes of high-quality carbon structural steel for pipes. The representative material is 10, 20 steel.