1. General requirements 1.1 Valve specifications and categories should be consistent with the requirements of the pipeline design documents. 1.2 The type of valve should be marked on the basis of the national standard number requirements. If the enterprise standard, should indicate the relevant

Weichai src="http://i.bosscdn.com/blog/20/10/11/4103116502.jpg" border=0> Speaking of Weifang in Weifang, the first thing that citizens think of is Weifang Diesel Engine Factory, now Weichai Holding Group Co., Ltd. and Weichai Power Co., Ltd. However, on April 10, 2009, Weichai Holdi

Two major factors that may change the coal industry's economic climate: The booming cycle of the coal industry has lasted for about seven years. The profitability is significantly higher than other downstream industries. This situation may change due to changes in the following factors: First,

The Ministry of Industry and Information Technology issued the “Circular on Strengthening the Production and Control of Refractory Clay Fluorspar” and stated that the total amount of mining and production of refractory clay and fluorite should be controlled so that the amount of exploit

Thai Petroleum announced on January 13 that it will form a strategic partnership with Dongguan Tongzhou Chemical Co., Ltd. and will use Guangdong as its base to export 2 million litres of lubricants to China in the first year. 5 million liters. Against the backdrop of a decline in the globa

Introduction of the principle of determination of crude fat in Flammulina velutipes Flammulina velutipes is a kind of edible mushroom and it is now popular in major hotels. It is loved by friends of all major diners because of its rich nutritional value. Flammulina velutipes is widely d

The wind and rain cast brilliant achievements. In 2010, the first-phase first-line project of the foundry center carrying the Yuchai people's many years of hope was officially put into operation. Compared with that proposed by Guangxi Yuchai Machinery Co., Ltd., everyone thought that the

On June 17, the Ministry of Science and Technology announced the list of the second batch of national high-tech industrialization bases this year, Zhuzhou National High-tech Industrialization Base for Electric Vehicles, Hengyang National High-tech Industrialization Base for Power Transmission Equip

Recently, Henan Far East generously launched special equipment for snow clearance such as sidewalks, residential roads, squares and communities. The introduction of this equipment has greatly increased the efficiency and effectiveness of manual snow removal. The YDPL0014 snow ploughing equipment is

The gluten number and mass spectrometer is a special instrument for measuring gluten content in flour and measuring gluten quality (gluten index). It is suitable for the determination of wheat flour and whole wheat flour, and is widely used in instruments and flour processing, grain and

On September 26, Chairman Tan Xuguang and President of Jilin University Zhan Tao signed a school-enterprise cooperation agreement. At the signing ceremony, the impromptu speech of Chairman Tan Xuguang was warmly welcomed by the teachers and students of Jilin University. On the afternoon of

Because of its variable pump delivery, self-priming ability, reversible, capable of conveying liquids containing solid particles and other characteristics of the sewage treatment plant, is widely used in the transport of water, sludge and flocculant liquid chemical . Screw pump selection should foll