http://www.yzriverpump.com/chemical-centrifugal-pump/ptfe-lined-pumps/

Production Introduction:
IHF type PTFE lined chemical transfer pumps, which is fluorinated ethylene propylene lined cast iron casing chemical centrifugal pump, which is designed and produced according to international standards ISO 15783 and ISO 5199. The pump has corrosion resistance, wear resistance, high temperature resistance and no aging. , High mechanical strength, non-toxic decomposition, wide operating temperature, transport medium temperature of -85 鈩?-200 鈩?and so on.
IHF type PTFE lined chemical transfer pumps features
advanced and reasonable structure, strong corrosion resistance, tight and reliable sealing performance, stable operation, low noise and long service life.
ItemDescription
1Pump casing
2Impeller
3Seal-ring
4Impeller nut
5Pump cover
6Seal part
7Mid.bracket
8Shaft
9Hanging stand
Application:
SeriesPTFE lined chemical transfer pumps can be used to pump clean or slightly dirty or even corrosive liquids.
鈥?Chemical, pharmaceutical, petroleum, metallurgy industries
鈥?Electric power, electroplating, pickling industry
鈥?Pesticides, papermaking , textile industry
鈥?Food and drink industries
Especially, PTFE lined chemical transfer pumps can transport any concentration of sulfuric acid, hydrochloric acid, nitric acid, acetic acid, hydrofluoric acid, aqua regia, strong alkali, strong oxidant, organic solvent and other strong corrosive media. It is one of the most advanced corrosion-resistant equipment.
Advantages:
鈥?Less sensitive to incomplete lubrication
鈥?Impellers with curved blades for more efficiency
鈥?No eddy-current losses due to metal-free isolation-shell
鈥?PTFE parts free of metallic framework
鈥?Special versions are also available
Specification details:
Capacity:6.3 ~ 400 m3/h
Head:5 ~ 125 m
Speed at 50 Hz:1450 RPM or 2900 RPM
Speed at 60 Hz1750 RPM or 3500 RPM
Inlet diameter:25 ~ 200 mm
Outlet diameter:20 ~ 150 mm
Power of fitted motor:0.55 ~ 110 kW
The highest work pressure:1.6 Mpa
Working Principle:Centrifugal Chemical Pump
Usage:Corrosive Chemical Liquid, Acid, Alkaline, 98% Sulfuric Acid
FAQ:
1.Who we are?We are a PTFE lined chemical transfer pumps manufacturers in South China. Please contact us to get information, price, etc
2.How to get price and catalog?Please send email (sales@yangtzepumps.com ) or call us (+86 18367718391)
3.MOQ1 SET
4.PackageStandard export plywood case
5.Lead time7~30days
6.WarrantyOne year, except spare parts
7.After sales serviceProvide permanent technical support
8.Any certificate?ISO 9001:2008, European CE CertificatesChina PTFE Lined Pumps
website:http://www.yzriverpump.com/chemical-centrifugal-pump/ptfe-lined-pumps/

How to weld spiral steel pipe properly
Spiral steel pipe is a common pipe, widely used in oil, natural gas, water conservancy, construction, and other fields. In the production process, the welding of spiral steel pipe is a very important link, and the welding technology has an important impact on the quality and service life of the steel pipe. This article will discuss how to weld spiral steel pipes, welding techniques, and common welding defects.

1. How to weld the spiral steel pipe
The welding of spiral steel pipe is mainly divided into two methods: submerged arc welding and double-sided submerged arc welding. Submerged arc welding is a method in which welding wire is heated and melted by an arc to form a weld. Double-sided submerged arc welding is to carry out submerged arc welding on both sides at the same time to make the weld stronger.

Before welding, the spiral steel pipe needs to be pretreated. The first is to clean the steel pipe to remove the oil and oxide on the surface. This is followed by cutting and forming the steel pipe to the required size and shape. Finally, the steel pipe is preheated to reduce thermal stress and deformation during welding.

In the welding process of spiral steel pipe, the following points should also be paid attention to:

（1）The steel plate should be pretreated before welding, including derusting, cutting, flanging, etc. This can ensure the welding quality and the service life of the steel pipe.

（2） When welding, the welding current and voltage should be well controlled to ensure the quality and stability of the weld.

（3）When welding, pay attention to protecting the welding area to avoid oxidation and pollution.

（4） Inspection and trimming should be carried out after welding to ensure the quality and integrity of the weld.



2. Spiral steel pipe welding technology
The welding technology of spiral steel pipe mainly includes three aspects: the welding process, welding equipment, and welding materials.

The welding process refers to the specific operation steps and parameter settings in the welding process. During the welding process, parameters such as welding current, voltage, welding speed, and welding temperature need to be controlled to ensure welding quality.

Welding equipment refers to the equipment and tools used for welding. Commonly used welding equipment includes welding machines, welding guns, welding heads, etc. These devices need to have stable current output and good operating performance to ensure welding quality.

Welding materials refer to materials used for welding, including welding wire, flux, and shielding gas. The selection of welding materials needs to be determined according to the steel pipe material and welding requirements to ensure the welding quality.

3. Common welding defects of spiral steel pipe
During the welding process of spiral steel pipes, common welding defects include weld cracks, pores, slag inclusions, and incomplete penetration. These defects will affect the service life and safety performance of steel pipes, so they need to be discovered and dealt with in time.

Weld cracks are cracks that appear in welds. The main reason is the thermal stress and uneven cooling rate generated during the welding process. Methods to prevent weld cracks include controlling welding temperature, adopting appropriate welding processes and preheating, etc.

Porosity refers to air bubbles that occur in welds. The main reason is that the gas in the welding area cannot be completely excluded during the welding process. Methods to prevent porosity include using suitable welding materials, controlling welding speed and welding temperature, etc.

Slag inclusions are metal slag inclusions that appear in welds. The main reason is that the impurities in the welding area cannot be completely removed during the welding process. Methods to prevent slag inclusion include adopting appropriate welding processes, cleaning the welding area, and using appropriate welding materials, etc.

Lack of penetration is the area of lack of penetration that occurs in a weld. The main reason is that the welding temperature is not high enough or the welding speed is too fast during the welding process. Methods to prevent incomplete penetration include controlling welding temperature and welding speed, adopting appropriate welding processes and welding materials, etc.

To sum up, the welding of spiral steel pipe is a very important link. In the welding process, it is necessary to master appropriate welding techniques and methods to ensure welding quality. At the same time, it is necessary to discover and deal with welding defects in time to ensure the service life and safety performance of steel pipes.

Smart play from Patrick Mahomes:
Patrick Mahomes threw the ball down to the ground which was forward and was an incomplete pass. This was because if he threw the ball to the closest receiver then it would been intercepted #Playoffs

Governor of Kashmir:

Governor of Kashmir(1820-21)

Hari Singh Nalwa was appointed the first Khalsa Governor of Kashmir in 1820. He governed the province for a little over a year when the pull of the Sikh Forward Policy compelled his recall from the province.

Hari Singh Nalwa was remembered in Kashmir for something he least expected. The currency minted while he was the governor had been the subject matter of much speculation (Surinder Singh 2001: 81-8). Following his departure from this subah, all the coins minted under the Sikhs in this province were called the 'Hari Singhee'. Thereafter, no matter who was the governor all coins minted in Kashmir continued to be called the 'Hari Singhee' even following Hari Singh's death

Muslim and British historians criticised Hari Singh's tenure as the Governor of Kashmir. Archival records, however, show that their assessment was based on an incomplete understanding of the situation.

Dez Bryant was on the sidelines at the Oklahoma-Oklahoma State game, cheering on his Cowboys.
Of course, there had to be a questionable play where Oklahoma State’s Tay Martin tries to make a great catch for a touchdown in the second half.
Bryant signaled a touchdown.
The officials reviewed the play and stood by their call of an incomplete pass.

Dez Bryant was on the sidelines at the Oklahoma-Oklahoma State game, cheering on his Cowboys.
Of course, there had to be a questionable play where Oklahoma State’s Tay Martin tries to make a great catch for a touchdown in the second half.
Bryant signaled a touchdown.
The officials reviewed the play and stood by their call of an incomplete pass.

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How it started. How it's going. 17 years together! We watched our wedding video on Father's Day and I was struck by what the Shinto priest who presided over our ceremony said. He said we were two imperfect and incomplete individuals who were uniting to build a more fulfilling life together. It will always be my greatest ***** and achievement that we have managed to do that. It hasn't always been easy, but it's always been a journey of discovery that has brought us closer toge…