28.06.2022

Stainless steel pipe/tube has high strength, strong corrosion resistance, good toughness, excellent vibration and shock resistance, and it is not brittle at low temperature. In the process of water delivery, it can ensure the purity of water quality.

Thin-walled stainless steel pipe has the following advantages: excellent mechanical properties, excellent wear resistance, good safety and health performance, good temperature resistance, good thermal insulation performance, smooth inner wall, low water resistance and 100% recyclable.

The following is a specific introduction to the role and advantages of thin-walled stainless steel pipes.

Chromium reacts with oxygen and oxidant in thin-walled stainless steel pipes and produces a passivation effect. A thin and tough dense passivation film Cr2O3 is formed on the surface of the steel pipe, which plays a protective role in corrosion resistance.

If stainless steel pipes and fittings are treated by impurity removal, pickling and passivation, the thickness of Cr2O3 generated can be increased, and the uniformity of compactness will be enhanced. By polishing of stainless steel pipes and fittings, not only can surface defects can be eliminated, but also the passivation film will be more delicate and dense, so as to reduce the probability of pitting corrosion. At the same time, the inner wall of the pipe is smooth and smooth, and friction is low, which further improves the hydraulic performance of the pipe and saves the consumption.


Uses and functions

Stainless steel pipe is safe and reliable, hygienic and economical. The thin-walled of the pipe and the development of new reliable, simple and convenient connection methods make it have more and more advantageous compared to other pipe materials.

Galvanized steel pipe, as a common pipe material, is easy to corrode. Under the influence of relevant national policies, galvanized steel pipes will gradually be withdrawn. Plastic pipes, composite pipes and copper pipes have become the common pipe materials of pipeline systems. However, in many cases, the stainless steel pipe has more advantages, especially the thin-walled stainless steel pipe with wall thickness of 0.6-1.2mm in high-quality drinking water system, hot water system and water supply systems.


Advantages of thin-walled stainless steel pipes

Thin-walled stainless steel pipe has the following outstanding advantages: excellent mechanical properties, excellent wear resistance, good safety and health performance, good temperature resistance, good thermal insulation performance, smooth inner wall, small water resistance, beautiful appearance, clean, fashionable, 100% recyclable, conducive to saving water resources, wide range of use, long service life, low comprehensive cost, etc.


What is Stainless Steel Coil?
Stainless steel is initially produced in slabs, which are then put through a conversion process using a Z mill, which converts the slab into coil prior to further rolling. These wide coils are typically made at around 1250mm (sometimes a little wider) and are known as 'mill edge coils'.


These wide stainless steel coils are further processed using a range of manufacturing techniques such as slitting, where the wide coil is slit into a multitude of strands; this is where much of the confusion around the terminology comes in. After slitting, the stainless steel forms a batch of coils taken from the mother coil and these are referred to by many different names, including strip coils, slit coils, banding or simply strips.


The way coils are wound can result in different names being applied to them. The most common type is known as a 'pancake coil', named after the way the coil looks when laid flat; 'ribbon wound' is another name for this method of coiling. Another type of winding is 'traverse' or 'Oscillated' , also known as 'bobbin wound' or 'spool' due to the fact that it looks like a bobbin of cotton sometimes these can be physically wound onto a plastic spool. Producing coil in this way allows much larger coils to be produced, resulting in improved stability and better production yields.


Nickel Alloy Material
About 60% of the nickel in the world ends up as a component of stainless steel. It is selected because of its strength, toughness, and resistance to corrosion. Duplex stainless steels typically contain about 5% nickel, austenitics around 10% nickel, and the super austenitics over 20%. Heat resistant grades often contain over 35% nickel. Nickel-based alloys generally contain 50% nickel or more.


Nickel Alloy Material Properties

In addition to a majority nickel content, these materials and may contain significant amounts of chromium and molybdenum. Nickel based metals were developed to provide greater strength at high temperatures, and greater corrosion resistance than could be obtained from iron and steel. They are significantly more expensive than ferrous metals; but because of their long life, nickel alloys may be the most cost-effective long term material selection.

Special nickel based alloys are widely used for their corrosion resistance and properties at dramatically elevated temperature. Whenever unusually severe conditions are expected one could consider these alloys because of their unique resistance properties. Each of these alloys is balanced with nickel, chromium, molybdenum, and other elements.


There Are Thousands Of Applications For Nickel As A Material And Nickel Based Alloys. A Small Sampling Of Those Uses Would Include:

Defense, especially marine applications

Energy generation

Gas turbines, both flight, and land-based, especially for high-temperature exhaust

Industrial furnaces and heat exchangers

Food preparation equipment

Medical equipment

In nickel plating, for corrosion resistance

As a catalyst for chemical reactions


What is Monel? Applications and Advantages of Monel
Monel is a trademark name for a group of nickel alloys mostly composed of nickel and copper, with traces of iron, manganese, carbon, and silicon. Stronger than pure nickel, Monel alloys are known for their corrosion resistance to several corrosive environments. The material was first developed by Robert Crooks Stanley in 1901. The name “Monel” is a trademark of “Special Metals Corporation”.


What is Monel used for?

Due to fabrication by hot- and cold-working, machining, and welding, Monel is extensively used in marine and chemical processing fields. However, the material is costly so can only be used where cheaper alternatives are not available. Usually, Monel piping is more than 3 times as expensive as compared to carbon steel pipe. Typical applications of Monel are valves and pumps; pump and propeller shafts; electrical and electronic components; crude petroleum stills, boiler feedwater heaters, marine fixtures, and fasteners; gasoline and water tanks; fuel tanks; springs; chemical processing equipment; process vessels and piping; heat exchangers; metal instruments; deaerating heaters; musical instruments; refrigerators; film processing; kitchen sinks; roofing; and eye-glass frames. Monel is available in a pipe, fittings, plate, strip, round bar, strip, tube, sheet, and wire form.


Advantages of Monel

The main advantages that Monel offers are：

-high corrosion resistance to acids and alkalis.

-resistance to alkalis.

-good ductility (easy to shape and form)

-ease of welding, brazing, and soldering

-high mechanical strength

-availability in different forms like sheets, plates, rods, bars, pipes, and tubes

-attractive appearance and finishes.

-ability to hold up in high-temperature situations as well as low temperatures


Disadvantages of Monel

Even though Monel provides a lot of advantages, it is not a perfect metal. It has disadvantages like:

-Poor Machinability

-Exposure to pitting corrosion in a saltwater environment.

-Sometimes, galvanic corrosion can be created in presence of Monel


What Are The Advantages Of Incoloy Alloy ?
A nickel-iron chromium alloy, Incoloy alloy comes with additions of titanium, molybdenum and copper. It comes with remarkable resistance to a lot of corrosive ambiences, and is broadly applied for industrial purposes. Learn about a few of the advantages of the alloy.


Corrosion-Resistance

The alloy has supreme corrosion-resistance. Due to the presence of high quantity of nickel, there is certainly superior resistance to corrosion cracking as a result of chloride ion stress. The austenite structure is incredibly steady. The presence of copper and molybdenum lets the alloy resist acids and minimizing agents. The alloy resists anxiety corrosion cracking, intergranular corrosion, crevice & pitting corrosion, general corrosion and more. It is especially beneficial in sea water, oil wells, phosphoric acids, sulphuric acids and more.


Versatile Applications

Incoloy Alloy can be applied for many purposes, such as Phosphoric acid evaporators, Sulphuric acid piping and vessels, Propellor shafts, Electrostatic precipitator electrodes, Chemical process equipment, Calorifiers, Tank trucks, Marine exhaust systems, Expansion bellows and Ammonium sulphate vessels. It is also applied in Power station ash hoppers, pickling tanks, Pickling tank heaters and hot vessels for seawater, food and water.


Easy To Weld

The alloy can be welded extremely easily through normal processes such as SAW, SMAW (manual), GTAW (TIG) and GMAW (MIG). The joint has to be fully clean in order to avoid weld pool contamination. The easy weld-ability makes the Incoloy alloy very useful.


Easy To Fabricate

The alloy can be easily cold worked or hot worked. Cold forming the alloy is more convenient than when it comes to stainless steel. The hot working has to be in the 870–1180°C range, and can be finished at 870–980°C. The hot worked components need to be stabilized prior to use, for optimal corrosion resistance. Sections bulkier than wire, sheet and strip needs to be extinguished for preventing sensitization.

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