Flexible Metal Hoses

Flexible Metal Hoses

Flexible Metal Hoses

Qflex (Quality Foils India) is a leading manufacturer of high-quality metallic flexible hoses for various industrial applications. These metal hoses offer exceptional flexibility, allowing them to absorb significant movements and be customized to fit any installation, even in tight spaces where other options fail.

Stainless steel flexible metal hoses are the perfect alternative to expansion joints when dealing with movement caused by thermal expansion or vibrations from equipment like pumps or compressors on flexible mounts. Made from a convoluted tube of stainless steel or nickel alloy sheet, these flex metal hoses come in annular or spiral designs. Some applications might require a multi-ply core for added strength. A braided metal hose reinforces the core that enables it to withstand high pressure and prevent unwanted expansion.

We offer custom-designed and build-to-print flexible metallic hose assemblies. They are crafted from formed bellows, braid wire, and machined fittings, with optional rigid tube sections.Braided metal hose are typically made from stainless steel or Inconel & titanium can be used optionally. As a leading manufacturer, our products meet or exceed industry standards and are trusted by air framers, engine manufacturers, and system suppliers. Metallic flexible hose pipe, specifically designed for rotary joint and union applications, simplify installation and ensure unrestricted movement.

Our Customized Metallic Flexible Hoses

  1. Flexible Metal Hoses With Braiding
    Qflex’s flexible metal hose with braidings offer the best solution for corrugated metal hose. This impressive improvement in a high pressure metal hose comes from how the braiding effectively restricts the hose's expansion in the axial direction (lengthwise). Our flexible metal hoses with braiding also allow the hose to transmit pulling forces along its length. This makes them ideal for applications requiring both strength and flexibility.The addition of a second braid enhances the hose's pressure resistance without compromising its flexibility that makes it ideal for dynamic settings. This design provides optimal performance to remain flexible enough to bend.

  2. Flexible Metal Hose Assemblies
    Stainless steel flexible hose assembly, come in two main designs: annular and helical. Annular hoses have a series of parallel rings that run perpendicular to the hose's length. Helical hoses, on the other hand, feature a continuous spiral pattern. Annular corrugations are generally preferred because they offer a smoother interface for connection fittings that lead to better stability during assembly and operation. They also avoid unwanted twisting under pressure. Their pressure resistance is impressive, offering a safety factor of 4 times the bursting pressure, reaching up to 300 bar for smaller sizes. While larger diameters may have slightly lower pressure resistance, the temperature range is vast. A Stainless steel metal hose can withstand high and low temperature resistance (-200°C to +650°C), high pressure resistance and long service life.

  3. Flexible corrugated steel hoses
    A corrugated flexible metal hose is a versatile piping element that offers a unique combination of strength and flexibility. They are made from a thin-walled, cylindrical metal tube that is formed into a series of waves or corrugations. The corrugations allow the hose to bend and flex without compromising its ability to withstand pressure. This makes them ideal for a wide range of applications, including:
    • Connecting machinery that vibrates
    • Absorbing thermal expansion and contraction
    • Routing hoses around obstacles
    • Transferring fluids and gasses in tight spaces

    The hoses are also braided with a metal wire mesh, which helps to strengthen the hose and prevent it from bursting under pressure. The braid can be single or double layer, depending on the pressure requirements.Corrugated flexible metal hoses are available in a wide range of sizes and lengths. They can be custom-made to meet the specific needs of an application

Technical Specifications for Flexible Metal Hoses with Braiding

Normal Bore Minimum Bend Radius Single Braid Double Braid

N.B (mm)

Static (mm)

Flexing (mm)

Max working pressure
(kg/cm2)

Test Pressure
(kg/cm2)

Max working pressure
(kg/cm2)

Test Pressure
(kg/cm2)

6

25

100

100

150

160

240

10

40

150

90

135

144

216

12

50

200

80

120

128

192

16

50

200

70

105

112

168

20

70

200

64

96

102

153

25

90

200

50

75

80

120

32

110

250

40

60

64

96

40

130

250

30

45

48

72

50

175

350

28

42

44

66

65

200

410

24

36

38

57

80

205

450

18

27

28

42

100

230

560

16

24

26

39

125

280

660

12

18

20

30

150

320

815

10

15

16

24

200

435

1015

08

12

12

18

250

560

1220

06

09

10

15



When Should A Metal Hose Be Used?

Industry Description

Refineries

For refinery processes to transfer fluid & gasses.

Steel Plants

Offer a unique blend of strength in the steel production process.

Power Plants

Handling high-pressure fluids and absorbing vibrations.

Nuclear Installations

Absorbing movement and pressure for safe, reliable fluid flow.

Fertilizer

Durable, leakproof transfer for fluids and gasses despite vibration and movement

Pharmaceutical Industry

Leakproof, pressure-resistant transfers in clean environments

Chemical Industry

Used for transferring corrosive liquids and gasses.

Lubrication Systems

Handling high pressure and tight spaces for smooth delivery

Automotive Industry

To absorb vibrations and connect parts in automotive exhaust systems, fuel lines, 

Defence Industry

Absorbing shock and vibration for reliable fluid transfer in demanding military applications

Boilers

Offer superior heat transfer and easy installation in tight spaces.

Vacuum Systems

Durable, leak-proof connections that handle movement and vibration.

Piping

Bringing strength & flexibility for tight spaces, vibration, & thermal changes.

Air Conditioning & Refrigeration

Adding strength and flexibility for fluid flow and vibration absorption.

Railways

Absorbing vibration and movement for reliable fluid transfer.



Advantages of Stainless Steel Metal Hoses

  • Suitable for wide temperature range (-200°C to +650°C)
  • Compensates for thermal expansion contraction in the piping system
  • High physical strength combined with light weight
  • Fire resistant
  • Moisture resistant
  • Longer life
  • Good corrosion resistance characteristics
  • Resistant to abrasion, penetration and damage
  • Connects misaligned rigid piping absorbs or dampens vibration.
  • A flexible and quick option for rigid piping in difficult locations.


Quality & testing of Flexible Metal Hoses

At Qflex, we take quality seriously. Our entire production process of flex metal hoses is under the watchful eyes of qualified quality control engineers. We don't rely on external labs; we have our own state-of-the-art facility equipped to meet the highest international standards for testing metallic flexible hoses.

Every single flexible metal hose assembly undergoes rigorous testing. We hydraulically test each one at 1.5 times its working pressure to make sure it can handle even demanding situations. We also perform pneumatic testing whenever necessary.

But our commitment to quality goes beyond the final product. We carefully inspect all raw materials used in our hoses, braiding, and end connections. This way, we can make sure that every component meets our stringent standards and that it contributes to the exceptional quality of our finished products.

KINDS OF TESTS:

  1. Flex Fatigue or Cycle Life Test
  2. Burst Pressure or Yield Test
  3. Bend Radius Test
  4. Flame Test

Why Choose Qflex - Quality Foils India?



High Quality

QFlex Quality Foils India stands out as a leading manufacturer of high-quality stainless steel flexible metal hoses. We offer metal hose pipe that is designed to meet your specific needs, all crafted with great quality and built to last. Our corrugated metal hose is made from high-grade materials and undergo rigorous quality checks.

Faster Turnaround Time

In today's competitive market, minimizing downtime and maximizing efficiency are crucial. QFlex Quality Foils India understands this and offers a range of high-quality flexible metal hoses designed to help you achieve faster turnaround times. By minimizing prep work, reducing rejects, and enabling faster forming and welding.

OEM Engineered Products

In today's demanding OEM environment, reliable and adaptable components are crucial. QFlex Quality Foils, a leading Indian flexible metal hoses manufacturer, offers the perfect solution for your needs. Our hoses are built with cutting-edge technology and premium materials to deliver exceptional performance in various applications.

Customized Options

We understand that your OEM applications require unique solutions. That's why we offer a wide range of customization options for our high-quality metallic flexible hoses so that you find a perfect fit for your specific needs. Our metal hoses can be customized in various diameters and lengths to fit perfectly into your existing designs.

Outstanding Performance

We are dedicated to providing metal hoses that deliver exceptional performance across a wide range of applications. Our secure connections and tight tolerances minimize the risk of leaks for optimal system performance. Our hoses optimize flow rates and minimize pressure drops that results in improved system efficiency.

Global Reach

We understand that your OEM applications require high-quality flexible metal hoses. We are proud to offer our exceptional products to customers worldwide. Our products adhere to the highest international standards for quality and performance that guarantee smooth integration into your project's needs.

Reliability and Longevity

When you choose Quality Foils (India) Ltd - Flexible Hose Division, you're investing in reliability and longevity. Our steel flex hoses are built to withstand the rigors of industrial applications, offering long-term durability and minimal maintenance requirements, thus maximizing uptime and productivity.

Global Reach

With a strong global presence and distribution network, we serve customers worldwide, delivering quality products and comprehensive support wherever you are. Whether you're a small-scale operation or a multinational corporation, you can rely on us for consistent quality and service excellence.


FAQS

How do flexible metal hoses differ from rubber hoses or plastic hoses?

Flexible metal hoses differ from rubber/plastic hoses in 3 key ways:
• Durability: Metal hoses handle higher pressures, extreme temperatures, and harsh environments.
• Leak Resistance: Metal construction minimizes leaks compared to rubber/plastic.
• Flexibility: While flexible, metal hoses offer less bendability than rubber/plastic.

What makes flexible metal hoses durable and high-performing?

The construction of a flexible metal hose contributes to its durability and performance by using layers of stainless steel or other alloys that provide strength, flexibility, and resistance to corrosion, high temperatures, and pressure. This design leads to reliable performance and a longer service life in demanding industrial applications.

What are some common challenges that users may encounter with flexible metal hoses?

Here are some common challenges or issues that users may encounter with flexible metal hoses:
• Improper fitting selection: If the fittings aren't chosen carefully to match the existing ones (type, size, material), it can lead to leaks and connection failures.
• Fatigue failure: Repeated bending or vibrations over time can lead to cracks and eventual hose failure.
• Corrosion: Exposure to incompatible chemicals or harsh environments can cause the metal to corrode, weakening the hose.
• Abrasion or wear: If the hose rubs against something frequently, it can wear down and eventually leak or fail.

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