Haoyin (Ningbo) Bellows Technology Co., Ltd.
  • TEL:

    +86-574-62166708
  • Fax:

    +86-18616887802
  • Address:

    No. 25 Gubei Road, Simen Town, Yuyao, Ningbo City, Zhejiang Province, China

Feel Free To Contact Us :

[email protected]

Our Products

Haoyin corrugated pipe, connecting the world's pipelines with professional expertise for the future. Green factories produce high-quality products, specializing in precision and showcasing new strength.

About

Haoyin (Ningbo) Bellows Technology Co., Ltd. is a professional enterprise specializing in the R&D, design, manufacturing, and sales of stainless steel bellows.

Service

Through our many years of professional experience, we provide you with comprehensive and considerate services

NEWS

Provide you with the latest enterprise and industry news.
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About us

Haoyin (Ningbo) Bellows Technology Co., Ltd.

ESTABLISHED FOR 20 YEARS.

Haoyin (Ningbo) Bellows Technology Co., Ltd. is a professional enterprise specializing in the R&D, design, manufacturing, and sales of stainless steel bellows. It is committed to providing safe, efficient, and durable flexible connection solutions for gas, plumbing, heating, and other fields. We are a professional OEM Stainless Steel Bellows Suppliers and ODM Stainless Steel Bellows Factory,Covering an area of 35 mu, the company has 18,000 square meters of standardized workshops and has obtained multiple management system certifications, such as ISO9001, ISO14001, and ISO45001.
As a "National High-tech Enterprise" and "Green Factory", Haoyin has always adhered to the production philosophy of "Striving for Excellence, Forging Quality". It has built a full-process quality management system from raw material screening, structural design, manufacturing, performance testing to after-sales support, continuously creating higher value for customers.
  • 18,00001

    Factory Area

  • 50 + 02

    Advanced Equipment

  • 120+03

    employees

  • 30+04

    Monthly Production (10000 meters)

NEWS

Latest articles

  • Jan 08,2026

    Are Stainless Steel Flexible Gas Connectors Really Safe?

    With the widespread use of gas in modern life, ensuring the safety of gas pipelines has become paramount. In recent years, stainless steel flexible gas connectors have been widely used in household and industrial gas systems due to their co...

  • Jan 01,2026

    Why Choose Stainless Steel Bellows for Gas Pipelines?

    With the widespread use of natural gas in urban areas, the safety of household, commercial, and industrial gas pipelines has become a major concern. In recent years, stainless steel bellows have gradually become the preferred material for g...

  • Dec 23,2025

    Stainless Steel Bellows vs. Ordinary Pipes: Why are they superior?

    In modern industry, piping systems are used to transport liquids, gases, steam, and other media, and are widely used in chemical, petroleum, construction, power generation, and other industries. The choice of piping is crucial for the safet...

Products Industry knowledge

In modern industrial, construction, and household gas systems, various pipes and connecting fittings play a crucial role. From pressure resistance and corrosion resistance to flexible connections, various products meet the needs of different application scenarios. This article will provide a detailed introduction to stainless steel corrugated pipes, stainless steel flexible gas connectors, flexible pipe/water pipe linings, metal hoses, and compensators.

Haoyin has been dedicated to the R&D and manufacturing of stainless steel corrugated pipes for over 20 years, and has developed into a high-tech enterprise integrating design, production and sales. 

1. Stainless Steel Corrugated Pipes
(1) What are Stainless Steel Corrugated Pipes?
Stainless steel corrugated pipes are flexible pipes made of high-quality stainless steel material. The pipe body has a corrugated structure, allowing it to bend and expand within a certain range. They are widely used in gas, steam, water pipes, and industrial fluid transportation systems, effectively buffering vibration and thermal expansion.

(2) Advantages and Features of Stainless Steel Corrugated Pipes
Pressure and temperature resistance: 304 or 316 stainless steel materials can withstand high pressure and high temperature environments.
Good flexibility: The corrugated structure allows the pipe to be bent and installed in limited spaces.
Strong corrosion resistance: Suitable for acidic, alkaline, and corrosive environments.

(3) Maintenance Points
Regularly check the corrugations for cracks or deformation.
Avoid collision or compression by sharp objects.
Ensure that the interface nuts are tightened to prevent leakage.

2. Stainless Steel Flexible Gas Connectors
(1) What are Stainless Steel Flexible Gas Connectors?
Stainless steel flexible gas connectors are high-quality gas connection fittings, usually used for the safe connection of household gas stoves, water heaters, and industrial gas equipment. They consist of a stainless steel pipe body, nuts, and adapters, and the length and specifications can be selected according to the pipe diameter and interface type.

(2) Advantages and Features
High pressure and corrosion resistance: 304 stainless steel material ensures long-term use without rusting.
Flexible design: Can be bent for installation, reducing pipe pressure and vibration.
Hard sealing structure: Effectively prevents gas leakage and improves safety.

(3) Maintenance Points
Regularly check whether the sealing rings and nuts are loose or aging.
Avoid scratching the pipe body with sharp objects. Before use, ensure the adapter matches the pipe to prevent leaks.

3. Flexible Pipe/Hose Linings
(1) What are Flexible Pipe/Hose Linings?
Flexible pipe/hose linings are protective layers used inside pipes, typically made of corrosion-resistant plastic or rubber materials. They are used to reduce friction in the pipe, improve fluid flow rate, extend pipe life, and prevent scaling and corrosion.

(2) Advantages and Features
Extends pipe life: Lining materials are corrosion-resistant and wear-resistant.
Reduces fluid resistance: Improves water or gas flow efficiency.
Suitable for various working conditions: Can be applied to water, gas, chemical, and sewage systems.

(3) Maintenance Points
Regularly clean impurities inside the lining.
Check the lining for cracks or detachment.
Avoid chemical corrosion exceeding the lining's tolerance.

4. Metal Hoses and Compensators
(1) What are Metal Hoses and Compensators?
Metal hoses are flexible connecting pipes made of corrugated metal tubing, used to absorb thermal expansion, vibration, or displacement in pipes. Compensators are typically used in long-distance piping systems to regulate thermal expansion, contraction, or displacement, protecting pipes and equipment.

(2) Advantages and Features
High temperature and high pressure resistance: Suitable for industrial pipelines and steam systems.
Absorbs vibration and displacement: Reduces equipment load and improves system stability.
Multiple materials available: Stainless steel, carbon steel, etc., to meet different working conditions.

(3) Maintenance Points
Regularly check the corrugated pipe for cracks or looseness.
Avoid overpressure, excessive stretching, or bending.
Check gaskets and bolts to ensure the connection is secure.

Table Summary:

Product Material Main Application Advantages Maintenance Tips
Stainless Steel Bellows Hose 304/316 Stainless Steel Gas, Steam, Water Pressure-resistant, Corrosion-resistant, Flexible Check for cracks, Avoid crushing, Ensure tight connections
Stainless Steel Flexible Gas Connector 304 Stainless Steel + Brass/Carbon Steel Nuts Gas Equipment Connection Pressure-resistant, Corrosion-resistant, Flexible, Hard Seal Check sealing rings, Tighten nuts, Avoid scratches
Flexible Pipe/Water Pipe Liner Plastic/Rubber Water, Gas, Chemical Corrosion-resistant, Wear-resistant, Reduce friction Clean debris, Check for cracks, Avoid excessive corrosion
Metal Hose and Expansion Joint Stainless Steel/Carbon Steel Industrial Pipelines, Steam Systems Absorbs vibration, High temperature & pressure resistant Check for cracks, Avoid overpressure, Ensure tight connections