2. The conveying pipeline and storage equipment of the refined oil are selected from the flanged needle valve .
3. For the pipelines of city gas and natural gas, needle valves with flange connection and internal thread connection are selected .
4. In the oxygen pipeline system in the metallurgical system, a needle valve that has undergone strict degreasing treatment and flange connection should be used.
5. For low temperature medium piping systems and devices, a low temperature needle valve with a bonnet should be used .
6. On the pipeline system of the catalytic cracking unit of the refining unit, a lifting rod type needle valve can be selected .
7. In the chemical system, such as acid and alkali corrosive medium and piping system, it is advisable to use all-stainless steel needle valve made of austenitic stainless steel and Teflon as valve seat seal .
8. Metal-to-metal sealed needle valves are available on the piping systems or devices of high-temperature media in metallurgical systems, power systems, petrochemical plants, and urban heating systems.
9. When flow adjustment is required, a worm-gear, pneumatic or electric adjustment needle valve with a V-shaped opening can be selected .
If any other requirements or changes are made below, they shall be stated in the order contract:
1. Valve specifications (in pounds valves expressed in inches; metric valves in millimeters)
2. Pressure rating or nominal pressure 3. Flange connection size and sealing surface form 4. Welded end and its hole diameter 5. Socket and threaded end size 6. Structural length 7. Refractory, anti-static device 8. Need worm gear drive or pneumatic , electric 9. Need to lock the structure, whether to lock 10. Material (including main body, valve stem, fasteners, etc.)
11. Gasket 12. Filler 13. Sealing surface material matching (ball sealing surface and seat sealing surface)
14. Others
Water treatment agents refer to chemicals used for water treatment. Usually referred to as chemicals used for sewage treatment. Widely used in chemical, petroleum, light industry, Daily Chemical, textile, printing and dyeing, construction, metallurgy, machinery, medicine and health, transportation, urban and rural environmental protection and other industries, the main purpose is to remove suspended solids and toxic substances in water, control the formation of scale, sludge, reduce the corrosion of water contact materials, deodorization, sterilization, decolorization, soft To stabilize water quality and desalination, so as to save water and prevent water pollution. It includes chemicals needed for cooling water and boiler water treatment, seawater desalination, membrane separation, biological treatment, flocculation and ion exchange technology. Such as corrosion inhibitors, scale inhibitors and dispersants, bactericides and algae killers, flocculants, ion exchange resins, purifiers, cleaning agents, pre-film agents and so on. The main products of water treatment agents include organic phosphorus water treatment agents, polycarboxylic acid water treatment agents, composite scale and corrosion inhibitors, bactericides and algae killers and other water treatment agents.
Our Services
1. OEM(????) service is available.
2. Fast producing time.
3.Cheapest price forproduces.
4. Reply promptly in 24 hours.
5.Free sample available.
FAQ
Q1: product specifications?
A: we will pack the product specifications according to your needs.
Q2: Do you have some videos where we can see the line production?
A: Yes, we can provide some videos for reference. (yes, we can provide some videos).
Q3: How about payment terms? What kind of payment terms do you have?
A: 30% TT deposit + 70% TT before shipment, 50% TT deposit + 50% LC bala
Nce, Flexible payment can be negotiated.
Q4: what advantages do you have?
A: the quality of the products we offer can be guaranteed and will provide you with very competitive prices.
If you have any questions, please contact with us directly. Organic Intermediate are produced by HRT bearing With High Quality and Good Appearance. Welcome you can visit our Factory. For inqury, please send mail directly to us.
Water Treatment Agent,Trans-Benzylideneacetone 99%,Sodium Allysulfonate,Water Treatment Chemical Agent
Shandong Chenyi Environmental Protection Technology Co.,Ltd , https://www.chenyichemistry.com