Why use Plastic Pipe Systems

The story of Plastics is a story of success. And the basis of that success is a human desire for a better life. Plastics - more than any other material, have sparked scientific curiosity. Designing plastics with the right technical characteristics to do the job is a never-ending story. 

Plastic pipe systems fulfil a wide variety of service requirements. These requirements are precisely described in a complete set of European Product Standards for each application alongside their specific characteristics.
For example:

•    Conveyance of drinking water: Hygienic requirements
•    Conveyance of gas: Highest Safety requirements
•    Plastic pipes for radiant heating and floor heating: Temperature resistance over decades
•    Sewer applications: High chemical resistance

Plastic pipes are perfectly capable of fulfilling the specific requirement for each application. They do so with a high level of performance over a long lifetime and with reliability and safety. 

The key factor for success is achieved by maintaining consistently high quality levels. For plastic pipe products, these levels are closely defined by the different standards. 

Two key aspects are fundamentally important for the excellent performance of plastic pipes: flexibility and long lifetime. 

Flexibility:Plastic Pipes are classified by their ring stiffness. The preferred stiffness classes as described in several product standards are: SN2, SN4, SN8 and SN16. The ring stiffness of pipes is important if they are to withstand external loadings during installation. The higher the figure, the stiffer the pipe! 

After correct installation , pipe deflection remains very limited but it will continue to some extent for a while. In relation to the soil in which it is embedded, the plastic pipe behaves in a 'flexible' way. This means that further deflection in time depends of the settlement of the soil around the pipe. 

Basically, the pipe follows the soil movement or settlement of the backfill, as technicians call it. This means that good installation of pipes will result in good soil settlement. Further deflection will remain limited. 

For flexible pipes, the soil loading is distributed and supported by the surrounding soil. Stresses and strains caused by the deflection of the pipe will occur within the pipe wall. However, the induced stresses will never exceed the allowed limit values.

The thermoplastic behaviour of the pipe material is such that the induced stresses are relaxing to a very low level. It has to be noted that induced strains are far below the allowable levels. 

This flexible behaviour means that the pipe will not fail. It will exhibit only more deflection while keeping its function without breaking. 

However, rigid pipes by their very nature are not flexible and will not follow ground movements. They will bear all the ground loadings, whatever the soil settlement. This means that when a rigid pipe is subject to excessive loading, it will reach the limit for stress values more quickly and break. 

It can therefore be concluded that the flexibility of plastic pipes is such that it offers an extra dimension of safety. Buried Pipes need flexibility. 

Long Life Time:Plastic pipes have been successfully used in service for over 50 years. The predicted lifetime of plastic piping systems exceeds 100 years. Several industry studies have demonstrated this prognosis. 

Plastic pipe materials have always been classified on the basis of long-term pressure testing. The measured failure times as a function of the stresses in the pipe wall has been demonstrated in the so-called Regression Curves. 

An extrapolation based on measured failure times has been calculated to reach 50 years. The predicted failure stress at 50 years was taken as a basis for the classification. This value is called MRS, Minimum Required Stress, at 50 years.

Safety Factor:From the qualified MRS value, a safety factor is applied to arrive at a design stress from which the nominal pressure PN has been calculated. Typical safety factors are for PE 1,25 and for PVC 2,0. The qualified nominal pressure of a plastic pipe therefore includes a safety factor, which results in a very safe design of the piping system. 

It is therefore emphasised that this classification of plastic pipes has nothing to do with the real predicted lifetime of plastic pipes. This can be much longer. Several investigations have recently been published which show that PVC and PE pipes will last even longer than 100 years. 

Source:https://www.sukoptfe.com/why-use-plastic-pipe-systems

reinforced thermoplastic pipe manufacturer & suppliers

Reinforced thermoplastic pipe (RTP) is a generic term referring to a reliable high strength synthetic fibre (such as glass, aramid or carbon), initially developed in the early 1990s by Wavin Repox, Akzo Nobel and by Tubes d'Aquitaine from France, who developed the first pipes reinforced with synthetic fibre to replace medium pressure steel pipes in response to growing demand for non-corrosive conduits for application in the onshore oil and gas industry, particularly in the Middle East.
Typically, the materials used in the construction of the pipe might be Polyethylene (PE), Polyamide-11 or PVDF and may be reinforced with Aramid or Polyester fibre although other combinations are used.

More recently the technology of producing such pipe, including the marketing, rests with a few key companies, one of which is Pipelife with Soluforce where it is available in coils up to 400 m (1,312 ft) length. These pipes are available in pressure ratings from 30 to 90 bar (3 to 9 MPa; 435 to 1,305 psi). Over the last few years this type of pipe has been acknowledged as a standard alternative solution to steel for oilfield flowline applications by certain oil companies and operators. The great advantage of this pipe is also its very fast installation time compared to steel pipe when considering the welding time as average speeds up to 1,000 m (3,281 ft)/day have been reached installing RTP in ground surface.

Primarily, the pipe provides benefit to applications where steel may rupture due to corrosion and installation time is an issue.

PTFE is a thermoplastic polymer, which is a white solid at room temperature, with a density of about 2200 kg/m3. According to Chemours, its melting point is 600 K (327 °C; 620 °F).[19] It maintains high strength, toughness and self-lubrication at low temperatures down to 5 K (−268.15 °C; −450.67 °F), and good flexibility at temperatures above 194 K (−79 °C; −110 °F). PTFE gains its properties from the aggregate effect of carbon-fluorine bonds, as do all fluorocarbons. The only chemicals known to affect these carbon-fluorine bonds are highly reactive metals like the alkali metals, and at higher temperatures also such metals as aluminium and magnesium, and fluorinating agents such as xenon difluoride and cobalt(III) fluoride.

The coefficient of friction of plastics is usually measured against polished steel.PTFE's coefficient of friction is 0.05 to 0.10, which is the third-lowest of any known solid material (BAM being the first, with a coefficient of friction of 0.02; diamond-like carbon being second-lowest at 0.05). PTFE's resistance to van der Waals forces means that it is the only known surface to which a gecko cannot stick. In fact, PTFE can be used to prevent insects climbing up surfaces painted with the material. PTFE is so slippery that insects cannot get a grip and tend to fall off. For example, PTFE is used to prevent ants climbing out of formicaria.

Source:https://www.sukoptfe.com/reinforced-thermoplastic-pipe-manufacturer-suppliers

Plastic pressure pipe

Plastic pipe is a tubular section, or hollow cylinder, made of plastic. It is usually, but not necessarily, of circular cross-section, used mainly to convey substances which can flow—liquids and gases (fluids), slurries, powders and masses of small solids. It can also be used for structural applications; hollow pipes are far stiffer per unit weight than solid members.

Plastic pipework is used for the conveyance of drinking water, waste water, chemicals, heating fluid and cooling fluids, foodstuffs, ultra-pure liquids, slurries, gases, compressed air and vacuum system applications.

There are three basic types of plastic pipes:

Solid wall pipe:Extruded pipes consisting of one layer of a homogeneous matrix of thermoplastic material which is ready for use in a pipeline.

Structured wall pipe:Structured-wall pipes and fittings are products which have an optimized design with regard to material usage to achieve the physical, mechanical and performance requirements. Structured Wall Pipes are tailor made solutions of piping systems, for a variety of applications and in most cases developed in cooperation with users.

Barrier pipe:Pipe incorporating a flexible metallic layer as the middle of three bonded layers. Barrier pipe is used, for example, to provide additional protection for the contents passing through the pipe (particularly drinking water) from aggressive chemicals or other pollution when laid in ground contaminated by previous use.

Most plastic pipe systems are made from thermoplastic materials. The production method involves melting the material, shaping and then cooling. Pipes are normally produced by extrusion.

Source:https://www.sukoptfe.com/plastic-pressure-pipe

PTFE Electrical Wire

PTFE's significant chemical, temperature, moisture, and electrical resistances make it an ideal material whenever products, tools, and components need to be durable and reliable in even the most strenuous applications. On top of this, PTFE coated wire boasts unique low-temperature durability and fire resistance that make it a good choice for a constantly growing list of products, components, and applications.

These qualities have allowed PWI to provide insulated PTFE wire for an extensive range of high tech industries across the country. While PTFE coated wire is often referred to by it's most popular brand-name, Phoenix Wire has made it our specialty to start where most other companies stop, and provide PTFE insulated wire not only in all standard sizes, but in a range of micro and miniature sizes that continue to enable innovation in even the most advanced industries.

Coated Wire for Medical Applications

PTFE coated wires provide ideal coverage and protection when medical devices require a smooth coatings that’s thin, smooth, precise, chemically inert, and capable of withstanding a wide variety of conditions. It’s non-flaking finish makes it a coating of choice when finish quality is paramount for both aesthetics and regulatory specifications. At PWI, our specialty is insulating the kind of micro PTFE coated wire that is frequently used in medical instrumentation, implants, and other devices.

PTFE Insulated Wire for Automotive Applications

The electrical demands placed on wiring in automotive applications continue to demand more. With the presence of corrosive chemicals, extreme temperatures, and friction - durable automotive wiring is relied on for a growing list of applications including air conditioning systems, navigation,power steering,battery applications, heated seats, and more.

With micro miniature PTFE coated automotive wires, PWI gives automotive manufacturers the ability to continually innovate with wiring that meets their exact performance specifications, no matter how limited they may be on space.

PTFE Coated Cable and Wire for Oil and Gas Applications
One of the greatest engineering challenges for the Oil and Gas industry is the ability to protect important instrumentation from temperature extremes, corrosive chemicals, and pressure. Fortunately, the low footprint and outstanding qualities of PTFE have allowed PWI to address the oil and gas industry’s complex wiring needs for drilling operations and instrumentation in even the toughest conditions.

On top of insulation, PTFE coated wires not only offer the electrical, temperature, and corrosion resistance needed by the gas and oil industries, but they also provide essential protection against the gas diffusion, pressure, and corrosion typically encountered in downhole drilling.

PTFE Coated Wires for General Electrical Applications

As one of the best known insulators, PTFE is frequently used in electrical components around the world for its ability to insulate to 500 volts per mil with unyielding reliability in even the most strenuous applications.

From mobile devices to advanced, high-tech machinery -- PTFE coated wires can be found in virtually every industry. It is often used as wire and cable wrap, as a separator on the conductive surfaces in capacitors, and in a limitless range of electrical applications where components are expected to withstand the elements.

With modern electronic manufacturers continually creating smaller, more portable advanced electronics, a cost efficient and reliable source for PTFE coated wire has never been more important.

Other Applications for PTFE Insulated Wire

The qualities of PTFE lend our products to an almost infinite list of uses. Other industries and applications PWI works with include retail, computers, veterinary medicine, the food industry, communications, the art community, robotics, marine sciences, space exploration, bioengineering, chemical sciences, and more.

Source:https://www.sukoptfe.com/ptfe-electrical-wire

PTFE Heat Shrink Sleeve

Heat-shrinkable sleeve (or commonly "shrink sleeve") is a corrosion protective coating for pipelines in the form of a wraparound or tubular sleeve that is field-applied.

PTFE heat shrink sleeving is made from pure virgin PTFE with no fillers or additives and therefore offer all the exceptional properties of PTFE.

The major characteristic of this high temperature heat shrink is its upper continuous working temperature of 260°C.

 PTFE heat shrink sleeving is made from pure virgin PTFE with no fillers or additives and therefore offer all the exceptional properties of PTFE.

This exceeds that of any other heat shrink polymer. In addition, it is completely resistant to virtually all chemicals, and UV radiation. It is available in 4:1 and 2:1 shrink ratios, and the shrinking temperature is 327°C.

Technical Data:Select the correct size sleeve by allowing a generous amount of shrinkage, rather than using a tight sleeve if possible. PTFE shrinks at temperatures over 330°C, so the gun temperature should be at least 400°C. To obtain the higher temperature we suggest a hot air gun of 1.5KW capacity. Parts to be covered that have a large thermal mass, e.g. a solid steel roller, may need preheating when PTFE heat shrink is applied, to prevent chilling of the PTFE sleeve, causing a loose fit.

Source:https://www.sukoptfe.com/ptfe-heat-shrink-sleeve

PTFE Heat shrink tubing

PTFE (fluoropolymer) tubes have a wide operating temperature range (-55 to 175 °C), a low coefficient of friction, and high resistance to chemicals and punctures.

Heat-shrink tubing (or, commonly, heat shrink or heatshrink) is a shrinkable plastic tube used to insulate wires, providing abrasion resistance and environmental protection for stranded and solid wire conductors, connections, joints and terminals in electrical work. It can also be used to repair the insulation on wires or to bundle them together, to protect wires or small parts from minor abrasion, and to create cable entry seals, offering environmental sealing protection. Heat-shrink tubing is ordinarily made of nylon or polyolefin, which shrinks radially (but not longitudinally) when heated, to between one-half and one-sixth of its diameter.

Heat-shrink tubing is manufactured in a multitude of varieties and chemical makeups with the exact composition of each type being dependent on the intended application. From near microscopically-thin-wall tubing to rigid, heavy-wall tubing, each type has precise design and chemical additives that make it suitable for meeting any of a wide variety of environmental demands. Heat-shrink tubing is rated by its expansion ratio, a comparison of the differences in expansion and recovery rate.

Types:Heat-shrink tubing is available in a variety of colors for color-coding of wires and connections. In the early twenty-first century heat-shrink tubing started to be used for PC modding to tidy up the interior of computers and provide an appearance considered pleasing. In response to this opening market, manufacturers started producing heat-shrink tubing in luminous and UV reactive varieties.

Although usually used for insulation, heat-shrink tubing with a conductive lining is also available, for use on joints which are not soldered.

Specialty heat-shrink tubing, known as "solder sleeves", have a tube of solder inside of the heat-shrink tubing, allowing the heat source to electrically join the two wires by melting the solder and simultaneously insulate the junction with the tubing. Solder sleeves also commonly contain a ring of heat-activated sealant on the inside of each end of the tubing, allowing the connection to also be made waterproof.

Heat-shrink end caps, closed at one end, are used to insulate the exposed cut ends of insulated wires.

PTFE Heat Shrink Tubing Benefits

Very good chemical resistance;
Extraordinary Temperature resistance;
Easy to handle;
Non toxic;
Anti-adhesive;

Application Industries:Automotive;Medical Engineering;Chemical  Industry;Food & Beverage;Aerospace;Electroplating;Measuring and Control Technology.

Source:https://www.sukoptfe.com/ptfe-heat-shrink-tubing

PTFE Engineered Parts

High-performance plastics based on PTFE are an extremely versatile material that can be given precisely defined properties and allows engineered parts with complex shapes to be produced. 

These include, for example, combinations of PTFE and metals, elastomers, and other plastics. Various additives can also be used with PTFE in order to achieve precisely tailored material properties.

PTFE is mechanical properties are lower than other engineering plastics,but that can be imprived by adding fillers such as glass fiber,carbon,graphite,molybdenum dislfide and bronze.

Application:

1. anti-corrosion

     In chemical anticorrosion equipment, pipeline, mechanical manufacturing all kinds of anti corrosion of parts, such as pipe, valves, diaphragm, expansion joints of pump. Porous PTFE can also as strong corrosive medium of filtration material. Due to the PTFE does not stain reaction medium, therefore, PTFE manufacturing reactor, distillation tower is used to refine the requirements of ultra pure substance is a good material, but also can be used for chemical equipment corrosion linings and coatings.

2. lubrication, sealing
 
   With PTFE manufacturing all kinds of packing belt, gaskets, seals, valve seat ring, etc., with various filler PTFE products used in bearing various requirements of self-lubricating and wear-resisting, piston ring and so on. For example, using graphite PTFE guide ring filler, used in non oil lubricated compressor; PTFE piston ring plus quartz sand used in oxygen compressor; oil-free piston ring filled with graphite and MoS2, liquefaction device used in helium, the low temperature of -269℃ use efficiency is good; with MoS2, silica, copper powder as a filler PTFE piston ring, the air compressor operating temperature of 150℃ to run on the piers can be good; the bridge deck due to thermal expansion and contraction with the retractable PTFE slider.

3. electrical insulation
 
    PTFE as an electrical insulating materials are widely used in the requirements of good high frequency characteristics and highly resistant to heat, cold resistance, water resistance, resistance to corrosion, aging etc. the occasions. For example, used in a wide range of temperature change fierce jet aircraft, radar and other such as the insulation of the high frequency electronic instrument, high frequency cable, flexible cable, motor groove, capacitor insulation and printed circuit board.

4. non-stick
 
    Because of PTFE and other material is not sticky, in plastics processing, food processing and other industries widely stripping agent, cookware coated with PTFE can be no cooking oil, plastic film heat welding commonly used PTFE glass cloth as viscous spacer and so on.

Source:https://www.sukoptfe.com/ptfe-engineered-parts

PEEK Seal

PEEK Seal Material Offers Robust Advantages for Hostile, High Temp Environments

PEEK seal rings are typically used in hostile, high temperature environments where other materials cannot effectively withstand such conditions.

PEEK Seal Material Properties

PEEK seal material is made from a high-grade thermoplastic polymer that’s known for its excellent mechanical and corrosion resistant properties, which are able to be maintained even at high temperatures.

It also has excellent thermal degradation resistance, and is able to withstand both organic and aqueous environments.

Compared to most thermoplastic materials, PEEK melts at a relatively high temperature (typically around 649 degrees Fahrenheit). At operating service temperatures, PPEK is capable of withstanding temperatures up to 480 degrees Fahrenheit.

Because PEEK is so robust, it’s considered to be a high-end engineering plastic.

Advantages

PEEK seals are known for their ability to enhance product performance by extending service life, as well as providing increased load capacity and higher RPM in dynamic applications over a wide range of environmental conditions.

In summary, the benefits of PEEK seals include:High Temperature Tolerance;Corrosion Resistant;Thermal Degradation Resistant;Chemical Resistant;Withstands Organic & Aqueous Environments;

Applications

PEEK seal rings are used for pistons, bearings, pumps & valves. It is also one of the very few materials that can be used in ultra-high vacuum applications.

PEEK seal rings are commonly found in the following industries:Automotive;Aerospace;Oil & Gas;Military;Medical;Chemical;

Source:https://www.sukoptfe.com/news-peek-seal

PTFE Seals & Rings

PTFE Seal Material Offers Greater Durability, Longer Operating Life & Other Mission-Critical Benefits.

Polytetrafluoroethylene (PTFE) seals and piston rings have started to replace their carbon counterpart as PTFE seals and rings offer greater durability, have a longer operating life, and can be operated at various pressures, velocities and temperatures.

PTFE seals and rings are becoming more common in a variety of applications and industries because of the unique advantages they offer.

Advantages

PTFE seals and rings have various properties that make it ideal for a wide range of applications. Some advantages of PTFE seals and rings include:

Low-Friction
High Wear Resistance
Chemical Resistance
Ease of Machinability
Broad Temperature Tolerance (-328F to +500F)
Anti-Adhesive Properties
Low Stick Slip

Applications

PTFE seals and rings are ideal for a variety of applications, particularly in fluid & gas applications.

Other applications where PTFE seals and rings are common include:

Gas Compressors (Air, Oxygen, Hydrogen, Carbon Dioxide, Ammoniac, etc.)
Hydraulic & Pneumatic Cylinders
Metallic & Thermoplastic Cylinders
Dosage Pumps
Liquid Pumps with High Fluidity
Liquid Oxygen Pumps
Liquidated Gas Compressors (butane, propane, etc.)
Liquid and Gas Vacuum Pumps
Reciprocating Compressors
Rocking Piston Pumps
Braking Systems
Combination Heat & Power Systems

Source:https://www.sukoptfe.com/ptfe-seals-rings

PTFE Piston Ring Types

Traight Joint;Scarf Joint;Overlapped Joint;Gas-tight Joint

Traight Joint
Piston rings with straight joints are used for sealing pressure differences above 15 bar.

With this gap, the leakage is slightly higher than with piston rings that have a scarf joint. Because of the high compressor speeds (rpm) typically achieved today, the loss of gas from leakage has only a minor impact on compressor performance.

The amount of gas leakage is negligible.

Scarf Joint
Piston rings with scarf joints are used for sealing pressure differences above 15 bar. During the run-in period, the sealing effect of scarf joints is slightly better than that of piston rings with a straight joint.

Overlapped Joint
The overlapped joint achieves a favorable sealing effect.

For this reason, it is primarily used for sealing gases with a specific light weight. Because of bending stress and the resulting  risk of breakage in the overlapping areas, piston sealing rings with overlapped joints should only be used in compressors operating with pressure differences of max. 15  bar.

Gas-tight Joint
Our gas-tight piston rings achieve the best sealing effect.

The special design of the joint reduces leakage to a minimum. The differential pressure is limited to a maximum of 15 bar. During assembly, please note that the piston ring achieves a good sealing effect in one direction of pressure only.

Source:https://www.sukoptfe.com/ptfe-piston-ring-types