Pump flow regulation of the main way
1 Change the piping characteristic curve
The simplest way to change the centrifugal pump flow is to use the outlet of the pump outlet valve to control it. The essence is to change the position of the pipeline characteristic curve to chang.......
The product name specification material steel factory/origin price (yuan/ton) is higher than yesterday's last week higher than last month's high line Φ6.5mm Q235 Baotou Steel 5960 0 0 40 High Line Φ6.5mm Q235 Xuanhua 5960 0 0 40 Rebar Φ12mm HRB335 Declaration Steel 5980 0 0 1.......
Product Name Specification Material Steel/Origin Price (Yuan/Ton) Than Yesterday Last Week, General Line Φ6.5mm Q235 Tang Steel 5480 0 0 -20 High Line Φ6.5mm Q235 Guangzhou Steel 5820 0 0 -10 High Line Φ8mm Q335 Guangzhou Steel 5820 0 0 -10 Rebar Φ10mm HRB335 Sand Steel 6000 0 0 0.......
Product Name Specification Material Steel Factory/Origin Price Today (yuan/ton) Yesterday Price (yuan/ton) Change (yuan/ton) High-line φ6.5-12mm Q235 Shougang 5920-6000 5920-6000 No-line φ6.5 -12mm Q235 Tangshan Steel 5920-6000 5920-6000 No change in high line φ6.5-12mm Q235 Xuanh.......
Organic fertilizer drying preparation: drying of human and animal excreta will cause fly maggot breeding, loss of fertilizer nitrogen nutrients. The correct approach is to compost organic fertilizer into base fertilizer, such as 4000 kg of human excrement or chicken ma.......
This afternoon, at the briefing meeting on the administrative enforcement of agricultural products in Zhejiang Province, the Zhejiang Provincial Bureau of Agriculture revealed some illegal agricultural cases seized in the first half of the year and 12 agricultural-funded products that were ser.......
Product name Specification Material Steel factory/Origin price (yuan/ton) Than yesterday Last week Hot rolled coil 2.75mm*1250*C Q235 Steel 6380 30 80 100 Hot rolled coil 3.0mm*1500*C Q235 Tangsteel 6250 100 150 150 Hot rolled coil 3.0mm*1250*C Q235 Angang 6250 50 100 150 Hot rolled coil 3.5m.......
The risk of a downturn in the auto industry has begun to affect parts suppliers that are upstream of the industry chain.
At present, China's largest powertrain enterprise group, Weichai Power, is looking for new business growth points beyond heavy-duty diesel engines in order.......
U.S. President Bush stated on the 14th that as an initiative to deal with high oil prices, he has lifted the administrative ban on oil extraction in the United States. He also urged Congress to adopt similar measures to abolish the relevant mining law ban.
At the White House press conferen.......
At the White House press conferen.......
According to Indonesia’s “Jakarta Post†reported on the 10th, the Indonesian government plans to implement a bill in October this year, requiring manufacturers to use at least 2.5% of biofuels in energy consumption, in order to reduce dependence on petrochemical energy .
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