By: David Marlowe 

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Because of the numerous advantages seamless steel tubing possesses over other tubing&#;apart from the added cost&#;seamless steel tubing is widely used in hydraulic systems. Seamless steel tubing is easier to bend than steel pipe, so it does not require the number of fittings and can be reused. High-volume applications are probably one of the only limited areas to the use of tubing.

Tubing size is measured on the outside diameter of the tube. All sizes are available in a variety of wall thicknesses. The application and use of tubing, (material, diameter and maximum pressure) will determine the wall thickness of the tubing used. Sizes range from 1&#;8 to 2 in. in fractional sizes.
Considering the application, internal pressures, weight, environmental conditions and whether you are going to use flared or flareless tubing are all considerations you must know to help you in material selection. Good quality tubing must be selected to ensure a good seal.

Tubing comes in a variety of materials, including:

• Seamless carbon steel, which is the most commonly used. It has a tensile strength to 47,000 psi.
• Stainless steel is used when external conditions require noncorrosive materials. It also has a tensile strength to 47,000 psi.
• Plastic can be used in low pressure applications.
• When selecting a material for your specific application, don&#;t focus only on the price tag. The manufacturer&#;s information is the most reliable and should be used when selecting the material based on allowable stress and working pressures.

Fittings
Tubing does not use threaded fittings. The fitting attachment is accomplished by either a component or another tube. The attachment is made by the following:

• Flared fittings are used primarily in low to medium pressure applications.
• SAE standard J533B covers specifications for both single and double flared (37° and 45° flare) tubing. Double flared tubing is used with thin walled tubing.
• SAE 37° angle is the standard angle used for hydraulic system tubing.
• SAE 45° angle is used with soft copper tubing for applications such as refrigeration, fuel lines, etc.
• The maximum wall thickness recommended by SAE standard should be checked prior to flaring a tube.
• Flareless Fittings, also commonly known as compression fittings, are used primarily in medium- to high-pressure applications.
• As system pressures increase, you require a thicker wall thickness. Higher pressures also affect the ability to use a flared type fitting.
  • Pressure capacity can be calculated using the following formula:
    • Pressure (P) = 2 x S x T / D,

Where
P &#; pipe internal pressure in psi
T &#; wall thickness
D &#; O.D. tube
S &#; stress on tube material in psi
Flareless type tubing fittings are available in
two common styles.

• Ferrule or Sleeve Type: The ferrule is used to seal against the tapered seat of the fitting and the tube. When tightening the nut a sealing pressure is felt on sealing surfaces causing the tube to deform
• O-ring type: Sealing is obtained by the installation of an internally mounted O-ring. The O-ring type uses a split ferrule to clamp the tube.
  It is important to remember to never mix from different manufacturers and always refer to the manufacturers specifications (torque recommendations) prior to installation.
• Welding fittings are used primarily in high pressure, vibration and fixed applications.
  Butt and sockets welds are both used to connect the fitting to the tube, so material type wall thickness and welding skills must be considered when using a welding fitting.

Flexible hose

• As stated previously, pipe and tubing are rigid fluid conductors and therefore not suitable when there is movement of one end of the conductor while the opposite end is fixed.

• The benefits of flexible hose over rigid pipe and tubing is that flexible hose is simple to route, withstands vibration and thermal expansion or contraction.
• Flexible hose consists of the following:
  • Inner tube
  • Reinforcement
  • Outer protective cover

The inner tube is made of either oil resistant synthetic rubber or thermoplastic material. Reinforcement amount and type is determined by the hose&#;s pressure rating. As the requirement of reinforcement increases from a single fiber/wire braid to multiple fiber/wire braids, the hose loses its flexibility. Outer protective cover is manufactured to be oil and weather resistant. Primarily, the outer protective cover is made of a synthetic rubber or thermoplastic material. The Society of Automotive Engineers (SAE) has set standards for hydraulic hose specifications. Most manufactures of hydraulic hose meets or exceeds SAEJ513 requirements.

Final note: Because the hose meets standards it is extremely important to carefully match the end fittings to the hose selected

If you are looking for more details, kindly visit Industrial Flexible Hose.

Benefits of Metal Hoses

Posted: September 13, |Category: Flexible Hoses

There are numerous benefits of metal hoses for a variety of applications when it comes to industrial piping. The experts from Flextech Industries have dedicated the time to explain what metal hoses are best known for and what their benefits are as opposed to other hose materials.

1. Exceptional Durability

One of the standout benefits of metal hoses is their exceptional durability. Built to withstand even the harshest of conditions, they resist weathering, corrosion, and physical damage. These hoses are typically made of stainless steel or other high-strength metals, ensuring longevity even in applications involving high temperatures, pressure, or corrosive materials. When you choose metal hoses, you are investing in a product that is built to last, saving you money and time in the long run.

2. Outstanding Flexibility

Despite their strength and durability, metal hoses offer outstanding flexibility. They are designed to maintain their structural integrity even when bent or twisted, making them ideal for applications that require complex routings or connections. Unlike rigid pipe systems, these flexible alternatives can accommodate movements and vibrations in your system without compromising performance.

Learn all about the different types of flexible hoses available on the market.

3. High Temperature and Pressure Resistance

Metal hoses have an innate ability to withstand high temperatures and pressures, making them the ideal choice for numerous industrial applications. Whether your operations involve steam lines, cryogenic systems, or anything in between, these hoses can handle it. They keep their shape and functionality even under extreme thermal or pressure conditions, providing you with reliability where you need it most.

Learn some of the safety precautions for hose pressure tests.

4. Easy Installation

Installing metal hoses is generally more straightforward and less time-consuming compared to their rigid counterparts. Thanks to their flexibility, they can be maneuvered easily into tight spaces, reducing the need for complicated pipe configurations or additional fittings. This not only cuts down on installation time but also reduces the potential for leak points in your system.

5. Customizable Solutions

Every industrial application is unique, and the versatility of metal hoses caters to this diversity. At Flextech Industries, we custom design and manufacture metal hoses to meet your specific needs. Whether you need a specific length, diameter, end fitting, or any other feature, our team works closely with you to deliver a solution tailored to your operational requirements.

If you want to enquire about metal pipes in industrial piping or need help in general in industrial fabrication, our experts at Flextech Industries are always available. Just fill out a website contact form, and we will get back to you soon.

If you want to learn more, please visit our website Flexible Rubber Hose.