Flexible Metal Hose

Flexible metal hose, also known as stainless steel flexible hose, braided metal hose, or corrugated metal hose, is a high-performance solution designed for demanding piping systems that require flexibility, durability, and vibration absorption. Constructed with a corrugated stainless steel inner core and reinforced with a stainless steel wire braid, this hose ensures superior resistance to pressure, temperature extremes, and mechanical stress.

These hoses are widely used in HVAC systems, steam and hot water lines, chemical plants, gas transmission, and oil refineries. The flexible metal hose compensates for thermal expansion, misalignment, and pipe movement while maintaining a leak-proof and corrosion-resistant connection.

Available in various sizes, pressure ratings, and connection types (flanged, threaded, or welded ends), our stainless steel flexible hoses offer long service life and easy integration into industrial, commercial, or residential applications. They are ideal for conveying steam, gases, fuel, and aggressive chemicals under high pressure or vacuum conditions.

Choose Zhengda’s flexible metal hose for a reliable, maintenance-free piping solution that meets international standards such as ISO, ANSI, and DIN.

Key Features

– Excellent flexibility for pipeline compensation and vibration absorption
– High pressure resistance with stainless steel corrugated and braided construction
– Available in standard flange, threaded, and quick coupling ends (DIN, ANSI, JIS)
– Corrosion-resistant materials suitable for steam, oil, water, and gas applications
– Customizable length, diameter, and connection types upon request

Technical Specifications

Nominal Diameter (DN)	Inch	Length (L) mm	Flange Thickness (b) mm	Bolt Qty (n)	Bolt Hole Dia. (d) mm	Bolt Circle Dia. (D1) mm

DN32

1.25″

100

DN40

1.5″

110

DN50

2″

105

125

DN65

2.5″

115

145

DN80

3″

135

160

DN100

4″

150

180

DN125

5″

165

210

DN150

6″

180

240

DN200

8″

210

295

DN250

10″

230

350

DN300

12″

245

400

DN350

14″

255

460

DN400

16″

255

515

DN450

18″

255

565

DN500

20″

255

620

DN600

24″

280

725

DN700

28″

310

840

DN800

32″

340

950

DN900

36″

370

1050

DN1000

40″

400

1160

Technical Parameters – Stainless Steel Flexible Hose

Parameter	Unit	Value
Working Pressure	MPa	1.0 / 1.6 / 2.5
Burst Pressure	MPa	≥ 4.0
Vacuum Resistance	KPa	86.7
Operating Temperature	°C	-196 ~ 600 (Special: up to 800)
Material	–	Stainless Steel 304, 316L
Media	–	Water, Oil, Gas, Steam, Chemicals
Flange Standard	–	DIN, ANSI, JIS, GB
Connection Type	–	Flanged, Welded, Threaded
Axial Movement	mm	±6 ~ ±25 (depending on DN)
Lateral Movement	mm	±5 ~ ±15 (depending on DN)
Angular Movement	°	±5 ~ ±15 (depending on DN)
Corrosion Resistance	–	Excellent
Flexibility	–	High
Applicable Industries	–	Petrochemical, HVAC, Marine, Power Generation

Hose Materials

Material	Properties	Application Purpose
Stainless Steel 304	Excellent corrosion resistance, good flexibility, suitable for general conditions	General water, oil, gas pipelines, moderate-temperature applications
Stainless Steel 316L	Superior corrosion resistance, high durability, suitable for harsh environments	Chemical, pharmaceutical, food industries, seawater applications
Stainless Steel 321	High-temperature resistance, superior mechanical strength	High-temperature steam, exhaust gas, hot oil, and industrial furnace connections

Installation Guide

Ensure that the metal flexible hose is free from any visible damage or defects before installation.
Avoid excessive bending, twisting, or stretching; maintain minimum recommended bending radius.
Connect hose securely using appropriate flanges, threads, or welding methods according to system design.
Support the hose adequately to avoid vibration and stress at the connection points.
After installation, perform a leak test under low pressure and gradually increase to operating pressure.

Maintenance Guide

Conduct regular visual inspections for wear, corrosion, and potential leaks at connections.
Check and tighten connections periodically to ensure sealing integrity.
Avoid exposure to environments exceeding recommended temperature and pressure ratings.
Replace immediately if any damage, leakage, or significant deformation is found during routine inspections.
Regularly clean hoses used in sensitive industries (e.g., food, pharmaceuticals) to avoid contamination.

Why Choose Our Stainless Steel Flexible Hoses

Proven Quality
Our stainless steel flexible hoses are manufactured from premium-grade stainless steel, offering exceptional corrosion resistance, flexibility, and reliability under high-pressure and extreme temperature conditions.
Global Standards
Engineered in compliance with internationally recognized standards including DIN, ANSI, and JIS, our hoses seamlessly integrate into global piping systems.
Custom Solutions
Available in a variety of sizes, lengths, and connection types—such as flange, threaded, and welded ends—to precisely meet diverse industrial applications.
Factory Direct Supply
Benefit from shorter delivery times and competitive pricing directly from our state-of-the-art manufacturing facilities.
Trusted by Clients Worldwide
Preferred by customers across North America, Europe, Southeast Asia, and the Middle East, our hoses consistently deliver outstanding performance in demanding industrial environments.

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Flexible Metal Hose