Selection of Industrial Hose

Determine your job size? A. Inner diameter B. Outer diameter C. Length (with or without joints) D. Tolerance (whether it is consistent with the standard) Determine your circulation medium A. Liquid, gas or solid a1. chemical composition a2. concentration a3. temperature a4. The type and size of solids determine your working conditions a. working pressure, test pressure, burst pressure B. vacuum c. continuous or intermittent use d. flow rate (kg/l per minute) to determine your external factors a. ultraviolet and ozone B. external friction c. external temperature d. chemical or petroleum effects on other parameters to be considered a. weight B. elasticity c. bending radius d

06

2020

/

02

Development direction of oil pipeline

1, Normal temperature transportation technology Countries around the world, especially large countries rich in waxy viscous crude oil, are vigorously carrying out experimental research on long-distance pipeline normal temperature transportation technology. With the increase of the production of waxy high viscosity crude oil and the development of crude oil exploitation to the deep sea, all countries pay special attention to the research on the transportation and flow guarantee technology of waxy high viscosity crude oil. Norway, France, the United Kingdom, the United States and other oil industry developed countries in the waxy high viscosity crude oil rheology and its mechanism, pipeline wax deposition prediction and other aspects to reach a very high level, and will soon bring new breakthroughs in application technology. 2, pipeline monitoring technology recently pipeline monitoring technology should be divided into post-leakage alarm technology and pre-opening warning

10

2020

/

01

Common classification of industrial hoses

According to the material is divided into the physical and chemical conditions to adapt to the operation of various industries, usually industrial hoses have very strict implementation standards in the chemical raw materials and processes of internal and external colloids. Common materials, such as: industrial threading hose: mainly made of stainless steel, copper and other metal materials, outer diameter 5mm -25mm, divided into single buckle and double buckle two structures, mainly used for sensing line protection. PVC PVC. Chemical corrosion resistance, light weight, anti-staining, anti-flatulence, the disadvantage is easy to aging. PUR polyurethane. Chemical resistance, light weight, good wear resistance. NR natural rubber. Elastic, frost-resistant, abrasion-resistant, tear-resistant, acid-resistant dilution

10

2019

/

12

Working principle of needle valve

The function of any valve is to shut off the fluid. According to the different spool, can be divided into globe valve, gate valve, plug valve, ball valve, butterfly valve, needle valve and so on. Needle valve than other types of valves can withstand greater pressure, sealing performance is good, so generally used for smaller flow, higher pressure gas or liquid medium seal. Needle valves are most suitable for use with pressure gauges. General needle valve shape are made of threaded connections. Nominal pressure: PN2.5PN4PN6.4PN16PN32Mpa nominal diameter: DN5 ~ DN25 applicable medium: oil, water, gas and other non-corrosive or

14

2019

/

11

Needle valve installation notes

1. The installation position, height and import and export direction must meet the design requirements. Pay attention to the direction of medium flow should be consistent with the arrow direction marked on the valve body, and the connection should be firm and tight. 2. The appearance inspection must be carried out before the valve is installed, and the nameplate of the valve should conform to the provisions GB12220 by the current national standard "General Valve Mark. For valves with working pressure greater than 1.0MPa and cutting off on the main pipe, strength and tightness test shall be carried out before installation, and the valves shall be allowed to be used only after they are qualified. During the strength test, the test pressure shall be 1.5 times of the nominal pressure, the duration shall not be less than 5min, and the valve housing and packing shall be free of seepage.

22

2019

/

10

Anti-corrosion method of needle valve

To know that anti-corrosion is very important to a product, directly affect the normal use, take the needle valve for it, its anti-corrosion is mainly relative to the valve body, it uses the material is stainless steel or carbon steel. Although there are many methods of anti-corrosion materials, it is still difficult to apply them appropriately, because the problem of corrosion is quite complex and difficult. First of all, there are also great difficulties in the selection of materials, not only considering the characteristics of anti-corrosion, but also considering the ability to withstand pressure and high temperature. In the case of pressure and temperature is not high, the use of non-metallic valve body

19

2019

/

08

< 12 >

Contact Us


+86-13304329595

Contact:

Kang Hongbo

Address:

No. 555 Jetta Road, Automobile Economic and Technological Development Zone, Changchun City, Jilin Province

Focus on us


Sweep the attention WeChat public number