304 316L Stainless Steel Corrugated Metal Bellows Expansion Joint for Pipeline Compensation

1“~70”
Our stainless steel metal bellows are the core flexible components of expansion joints. Made of 304, 316L, 321, 254SMo stainless steel by hydraulic forming, they absorb thermal displacement, damp vibration and isolate noise for industrial pipelines. Suitable for high temperature, high pressure and corrosive working conditions. Custom sizes and materials are available, complying with EJMA and GB/T12777-2019 standards. MTC and 3.1 certificates can be supplied.
Delivery
EXW
minimum order
20 pieces
Supply Ability
100pieces / Week
Country of Origin
CHINA
Stock Time
7Day
Quantity:
US $15.00 - US $1256.00 / pieces
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Detailed Description

Our stainless steel metal bellows act as the core flexible element of pipe expansion joints. We select high-grade raw materials including 304, 321, 316L and 254SMo stainless steel. Adopting advanced hydraulic forming and stress relief treatment, each bellows is processed with strict dimensional control to guarantee consistent quality. It is designed to solve the deformation problem of industrial pipelines under complex working conditions.

Key Performance & Advantages

This corrugated bellows has outstanding flexibility and long-cycle fatigue life. It can efficiently absorb axial, lateral and angular displacement generated by thermal expansion and contraction of the piping system. It also functions well in vibration damping and noise isolation, reducing the vibration transferred from pumps, compressors and other rotating equipment to the whole pipeline. The corrugated structure can resist repeated deformation without cracking, and keeps stable sealing performance under fluctuating temperature and pressure. Different wave profiles can be arranged to match your displacement and fatigue requirements.

Wide Application Range

Our metal bellows are widely adopted in many heavy industrial sectors. Typical applications cover petroleum, chemical processing, power generation, metallurgy, natural gas transmission, district heating, food processing and pharmaceutical piping. They are suitable for media such as steam, water, oil, gas and weak corrosive fluids. Whether for high-temperature steam lines, pressurized process pipelines or outdoor buried pipe networks, the bellows can maintain reliable service performance in harsh environments.

Customization & Quality Assurance

We provide full customization service according to your technical drawings and working parameters. You can specify the outer diameter, inner diameter, wall thickness, wave number, overall length and material grade. All products are manufactured in accordance with EJMA standard and GB/T12777-2019. Every batch will go through inspection for dimension, tightness and pressure test. Material test certificates (MTC), 3.1 inspection certificates and SGS reports are available upon request. We also offer technical support to help you select the proper bellows for your project.