The Tongqian grassland is produced in Europe and is an umbrella of the genus Umbellifera. It is a perennial water or wet herb. The top of the stem is brown, the submerged leaf has a round shield shape, and the diameter is 2~4 cm. The leaf edge is wavy, the grass is green and has a long handle. Flowers bisexual, umbel, white-pink, flowering from June to August, one leaf per section, the roots of the stems grow rapidly and the fertility is strong.
The ramets method is carried out every year from March to May, and the roots can be rooted after being kept moist for 1~2 weeks. The cultivation substrate is humus soil, river mud and garden soil in a volume ratio of 2:4:4.
Tongcao grass can be cultivated in open field, suitable for water tray, aquarium, pool, wetland and indoor water body greening. It can choose medium-sized flowerpot without drain hole. Take three healthy leaves with stem nodes and petioles and bury them in cultivated soil. Each pot can be placed in multiple seedlings, watered, and carried out on cloudy days to maintain the best growth of semi-soil and semi-water.
Copper money grass does not require high water quality. It should be carried out in fresh water with low hardness. The salt should not be high, and the pH should be 6.5~7. More fertilizer is needed, and the fertilizer is used every 2~3 weeks in the growing season. Hi-light is sufficient, the whole sun grows well, and the petiole grows in the direction of light when it is half-sunlight. It needs to use special fluorescent lamps to fill light every day for 8~10 hours. Hi warm, afraid of cold, growth temperature 10~25 °C, winter temperature is not lower than 5 °C. Generally, it is not easy to get sick, and yellow leaves are removed in time.
The copper grass is perennial and grows rapidly, and the continuous planting of the plant is no more than one year. It is necessary to turn the basin in time. Potted plants can be placed on the desk, window sill, and several.
Threaded flanges are widely demanded as pipe flanges i.e called as threaded pipe flanges used in different industrial applications.
Threaded Flanges are also known as screwed flange, and it is having a thread inside the flange bore which fits on the pipe with matching male thread on the pipe.
This type of joint connection is Speedy and simple but not suitable for high presser and temperature applications. Threaded Flanges are mostly used in utility services such as air and water.
Threaded (Screwed) flange is similar to the Slip-On flange, but the bore is threaded. Its chief merit is that it can be assembled withour welding, explaining its use in low pressure services at ordinary atmospheric temperatures, and in highly explosive areas where welding create a hazard.
The various types of threaded flanges are as follows:
Plain Threaded Flanges
Female Threaded Flanges
Male Threaded Flanges
Threaded Flanges,Raised Face Flange,Steel Threaded Flanges,Screwed Flanges
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