How to build quality farmyard fertilizer in winter
Less farm work in winter is a good time to build farmyard fertilizers. However, because of the low temperature, the man-made farmyard fertilizers are not easy to ferment. Therefore, it is necessary to grasp the following four links when composting:
First, the site selection should be closer to the fat source, leeward and convenient transportation.
Second, the heap of manure dumps is preferably round in shape and has a height of more than 1 meter to facilitate thermal insulation. After determining the bottom of the manure pile, first coat a layer of culvert or grass, and stack the mixed manure evenly. When composting, it is necessary to pay attention to increase the proportion of hot manure and other fertilizers and reduce the amount of water and soil. This will not only result in fast fermentation but also good quality.
Third, antifreeze winter dunghills are easily frozen and affect the quality, and increase the dunghills, slow heat distribution, is conducive to fermentation. In addition, in order to speed up the freezing of the manure fermentation, a pit (a large pile of poop can be planed for two) can be shaved in the dunghill, the weeds can be piled in the pit, and then the raw smoke can be ignited and smoked slowly, but care should be taken not to burn the grass. .
Fourth, seal around the dung heap first with grass cover, so that it forms a 30 to 50 cm thick insulation layer, and then mud closed, conditional can also cover the waste plastic film insulation.
Source: China Agricultural Information Network
Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting.
The long tapered hub provides an important reinforcement for use in several applications involving high pressure, sub-zero and / or elevated temperatures. The smooth transition from flange thickness to pipe or fitting wall thickness effected by the taper is extremely beneficial, under conditions of repeated bending, caused by line expansion or other variable forces.
These flanges are bored to match the inside diameter of the mating pipe or fitting so there will be no restriction of product flow. This prevents turbulence at the joint and reduces erosion. They also provide excellent stress distribution through the tapered hub and are easily radiographed for flaw detection.
This flange type will be welded to a pipe or fitting with a single full penetration, V weld (Buttweld).
Steel Pipe Welding Neck Flange,Rigid Butt Welding Flange,Welding Neck Flange For Pipe,Carbon Steel Flange Customization
Fuyuan Marine Accessories Co., Ltd , https://www.fuyuanmarineparts.com