Before the clarity test. It is necessary to thoroughly inspect whether the sample submitted for inspection meets the relevant requirements. If the weight is up to standard. The test number is the same as the one recorded on the record card. Whether the type is described in the description card, whether the packaging bag is damaged, the size and appearance of the packaging bag, and whether the inspection seed is coated or not. In particular, pay attention to sample size and heavy-duty hybrids. If there are heavy-duty hybrids, they should be sorted out and weighed. Then it is divided into other plant seeds and impurities, whether it has been treated by the blast type netness meter.
The sample submitted for inspection refers to the entire sample that was sent to the laboratory for testing the indicators, and then completed a series of cleanliness analysis work on the seed cleanness table. Clarity test samples refer to samples used for the test for clarity. The minimum weight of the two samples shall comply with the provisions of the CB/T3543.2-1995 Standard for Crop Seed Inspection Regulations. It should be noted that the weight of the test sample and the cleanness test sample specified in the "Crop Seed Inspection Regulations" is the minimum weight. Can not be lower than this weight (for example, the minimum weight of tested samples of wheat crops is 1000g, the minimum weight of the test samples for clarity is 120g; the minimum weight of the tested samples of oil crops is 100g, the minimum of the cleanliness samples Weight 10g). If the test sample weight does not meet the required weight, it shall be filled or re-weighed. Comparing the weights of the test samples and the cleanliness test samples in the “Procedure†can be seen to be very different, generally more than 10 times.
A finned tube is a heat transfer device consisting of many parallel metal fins commonly used for heat dissipation and cooling applications. Finned tubes increase the surface area of the pipe, thus increasing the heat transfer efficiency. Finned tubes are commonly used in applications such as air coolers, automotive radiators, condensers, and evaporators. They are also used in industrial heaters and refrigerators to increase heat transfer surface area and improve efficiency.
Finned tube is a kind of new, wear-resistant, efficient heat exchange material, is a kind of energy-saving heat exchange element, it uses high-frequency power source as heat source, the steel strip, steel pipe heating at the same time, so that the fusion welding together into one, with high heat exchange efficiency, large cooling area, long service life, adapt to a wide range of temperature, high pressure characteristics, it can also be made of a variety of materials, Excellent heat transfer, durability, heat resistance and corrosion resistance. Widely used in waste heat recovery, petrochemical, power plant boiler, economizer, bus, industrial and civil construction heating, refrigeration, medical drying, wood drying, food drying system and other industries.
The main business scope is various heaters, waste heat boilers, pressure vessels, supportingair preheaters, air coolers, furnace accessories and accessories, and provide equipment installation, with EPC ability of projects. At present, our customers have covered all large and medium-sized petrochemical enterprises in China and established long-term strategic cooperative partnership with them. Products are exported to Southeast Asia, Middle East, and other regions.
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