The Vacuum Pipe Fittings are manufactured from high quality stainless steel and Aluiminum. Kaysen Steel manufacture a comprehensive range of Vacuum Pipe Fittings & components, including KF Centering Rings , ISO Centering Rings Aluminum, Stainless Steel Centering Rings form a modular system for piping from KF10-KF50, ISO63-ISO500 in SS304, SS316 material and Aluminum, O-ring material should be NBR, VITON (FPM). Vacuum fittings are ideal for high vacuum environments. Welcome to buy KF Centering Rings , ISO Centering Rings Aluminum, Stainless Steel Centering Rings from us in wholesale price, if you have any questions or requests, pls feel free to contact us! Vacuum Centering Rings,KF Centering Rings, ISO Centering Rings Aluminum,Stainless Steel Centering Rings Kaysen Steel Industry Co., Ltd. , https://www.chinasanitaryvalve.com
KF, ISO Centering Rings Aluminum, Stainless Steel Centering Rings Specification:
â–ª Standard: KF, ISO
â–ª Material: Stainless Steel 304 (1.4301), Stainless Steel 316L(1.4404), Aluminum, etc
â–ª Sealing Material: rubber/ elastomeric o-ring mounted in a centering ring
â–ª Size Range: KF16-KF50, ISO63-ISO500
▪ Temp.:between ~0° C and 120-180° C
â–ª Pressure: from atmosphere to ~10-8 Torr or mbar.
Quality & Inspection:
â–ª PMI test to verify material grade
â–ª Dimension controlling during fabricating and finished
â–ª Visual and surface 100% examination before shipment
â–ª Packed in carton box firstly, then in wooden case
The top dressing of the root of the fruit tree is to spray the fertilizer to the leaves, and the leaves are directly absorbed to synthesize the photosynthetic products to supply the whole tree. This method of fertilization is faster than soil fertilization and has high utilization rate, and can supplement tree nutrients as soon as possible. The top dressing can be based on the symptoms of the tree body deficiency, and the different fertilizers are applied according to the tree. 1. Nitrogen deficiency: weak trees, fruit trees, "big year" trees are prone to nitrogen deficiency, and the amount of nitrogen needed in the early growth period can be sprayed with urea, 4 times a year. At the initial flowering stage (10% flowering), after Xiehua, and in mid-June, 300-400 times of urea solution was sprayed once to promote the growth of branches and young fruits. In the beginning of November, 200 times of urea solution was sprayed once. 2. Phosphorus deficiency: saplings, saplings, and fruit trees are prone to phosphorus deficiency. Fruit trees are required for the whole growth period of phosphate fertilizer. It can be sprayed 400-500 times of potassium dihydrogen phosphate or 40-50 times per month from May to August. Superphosphate leachate 4 times a year. 3. Potassium deficiency: saplings, saplings, fruiting trees, "big year" trees are prone to potassium deficiency, and potassium is needed in the middle and late growth stages. It can be sprayed 400-500 times dihydrogen phosphate once a month from June to August. Potassium, or 25 times as much as ash ash, 3 times a year. 4. Calcium deficiency: The first fruit tree, the vigorous growth tree and the large fruit are prone to calcium deficiency, forming bitter pox disease and reducing fruit quality. 400 times amino acid calcium liquid fertilizer can be sprayed once in mid-May and late June. It is also possible to spray 200 times of calcium chloride solution once in each of June and September. 5. Zinc deficiency: It is easy to produce lobular disease, the leaves become smaller, the photosynthesis is sharply reduced, the branches and leaves grow slowly, and 25 to 30 times of zinc sulfate solution can be sprayed on the branches and stems before germination. Or after germination, it is found that when the lobular disease occurs due to calcium deficiency, the 300-fold amino acid zinc liquid fertilizer is sprayed twice. 6. Iron deficiency: It is easy to produce mosaic disease, which causes the leaves to lose green and yellow, affects the photosynthetic function, and reduces the yield and quality of the fruit. It can start to lose green in the middle and long-term (May) of the spring shoots. When spraying twice, 200 to 300 times of diammonium fulvate, each time 15 days apart; or spray urea iron, the concentration is 200 times of urea and 330 times of ferrous sulfate, apply immediately after mixing; or spray 300 times Amino acid iron liquid fertilizer. 7. Boron deficiency: produces shrinkage disease, causing brown wood cork lesions in the pulp. In severe cases, the fruit surface is uneven and cracked, which seriously reduces the quality of the fruit. It can be sprayed 300-350 times of borax solution once in the initial flowering period and 10 days after the flowering, and the fertilizer effect is maintained for 1 year. Borax can also be applied to the soil before the germination of the early spring fruit trees. The adult trees are 200 grams per plant, and the fertilizer efficiency can be maintained for 2 years. 8. If the tree body has no obvious symptoms of deficiency of medium and trace elements, it can not spray the foliar fertilizer of calcium, zinc, iron and boron, and change the sprayed light and micro-fertilizer 400 times liquid. It will be used once a month from May to August. The medium and micro nutrient elements can accelerate the nutrient operation and accumulation of the tree and promote growth and development.
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