SS304/SS316L Metal Corrugated Bellows Expansion Joint for Pipeline System

• After-sales Service: According to The Contract
• Warranty: 12 Months
• Transport Package: Seaworthy Plywood Case
• Model NO.: MF-PN16-DN200
• Specification: DN32-DN2000
• Trademark: Baori Steel
• Origin: China
• HS Code: 8307100000
• Production Capacity: 50, 000 Pieces/Year

Product Description

Overview of Metal Bellows Expansion Joint 

Our Metal Bellows Expansion Joints are engineered to absorb thermal expansion, vibration, and misalignment in piping systems. Constructed with high-grade Multi-ply Stainless Steel (SS304/SS316) bellows and robust carbon steel or stainless steel flanges, these compensators ensure the safety and longevity of your pipelines.

Whether for water treatment, district heating, petrochemical, or exhaust systems, our expansion joints offer superior flexibility and high-pressure resistance. We support standard specifications (DN32-DN2000) and fully customized designs including Tied, Hinged, and Pressure Balanced types.

Key Features:

High Flexibility: Multi-ply bellows design for maximum movement absorption (Axial, Lateral, and Angular).
Durable Material: Bellows made of SS304/SS316L for excellent corrosion and heat resistance.
Strong Connection: Flanges available in Carbon Steel (Q235/A105) or Stainless Steel, meeting ANSI/DIN/JIS standards.
Strict Testing: 100% Hydrostatic and tightness testing before shipment.
Customization: Available with Tie Rods, inner sleeves, or protective covers upon request.

Product Details

Product Name	Stainless Steel Metal Bellows Expansion Joint / Compensator
Nominal Diameter	DN32 - DN2000
Working Pressure	PN6, PN10, PN16, PN25
Bellows Material	Stainless Steel 304, 304L, 316, 316L (Multi-ply)
Flange Material	Carbon Steel (Q235, A105, RST37.2) or Stainless Steel
Temperature Range	-20°C to +400°C
Connection Type	Flanged End
Structure Type	Axial (Standard), Lateral, Angular, With Tie Rods
Applicable Media	Water, Steam, Oil, Gas, Exhaust, Chemical Fluids
Flange Standard	ANSI B16.5, DIN 2501, JIS B2220, GB/T 9119
Surface Treatment	Anti-rust painting
Design Standard	EJMA, ASME, GB/T 12777
HS Code	8307100000
Certificate	ISO 9001:2015, Mill Test Certificate (MTC)

Specification

1. Standard Size Range (DN32 - DN2000+):
We offer a full range of sizes. The prices listed above (for DN100, DN200, DN300, DN500) are based on our Standard Configuration:

Bellows Material: Stainless Steel 304 (Multi-ply)
Flange Material: Carbon Steel (RST37.2 / Q235)
Pressure Rating: PN10 / PN16
Length: Standard Length

2. Customized Size (Price Negotiable):
For the item listed as "Customized Size", please note that the price is negotiable.
Since expansion joints are highly customizable products, the final price depends on:

Specific Diameter (e.g., DN800, DN1200, or non-standard sizes).
Material Requirements (Full SS304, SS316L, Duplex Steel, etc.).
Structure (With Tie Rods, Hinged, Pressure Balanced).
Please contact us with your requirements or drawings, and we will offer you a precise quote within 24 hours.

Specification	Price
DN100	$ 45.00
DN200	$ 95.00
DN300	$ 165.00
DN500	$ 380.00
Customized Size	Negotiable

Application

Power Plant Use

Petrochemical Systems

Cryogenic Applications

Steam & Hot Water Lines
Handles thermal expansion in boiler-to-turbine steam lines and hot water circuits. Resists 800°C+ heat, high pressure, and vibration — critical for plant safety and uptime.

Oil, Gas & Chemical Transfer
Used in refineries and reactors to absorb movement from high-pressure oil/gas flow. Corrosion-resistant stainless steel ensures reliability in aggressive chemical environments.

LNG & Liquid Gas Pipelines
Compensates contraction at -196°C in LNG, liquid nitrogen or oxygen systems. Maintains leak-free seal under extreme cold — vital for cryo storage and transport.

Production Showcase

Our Company

Company Profile

Shanghai Baori Steel Industries Co., Ltd, has established its significant 
presence in the metal manufacturing and fabrication industries. Since its 
establishment on Aug 03, 2023, the company has been committed to providing comprehensive and efficient fabrication solutions, focusing on the integration and optimization of steel supply services.

Company Address

Our company is located in Baoshan District, Shanghai, China.
Specific Location:

Room 403, Building 1, Lane 1588, Youyi Road, Baoshan District, Shanghai, China 

FAQ

Q: Can you manufacture according to my drawing or specific requirements?
A: Yes, absolutely. We support OEM and ODM. Since expansion joints are highly customized products, we can manufacture them exactly according to your drawings, or design a solution based on your pipeline parameters.

Q: What information should I provide to get a precise quotation?
A: To give you the best price, please kindly provide the following details: Size (DN), Pressure Rating (PN), Material, and Connection Type.

Q: Do you inspect the products before shipping?
A: Yes, Quality is our culture. Every single expansion joint undergoes 100% Hydrostatic Testing (Water Pressure Test) and visual inspection before packaging to ensure zero leakage and safety.

Q: Can I get a sample to check the quality?
A: Yes, we can provide a standard size sample (e.g., DN100) for your evaluation. For large-size customized products, we can provide detailed production photos and videos.

Q: What certificates do you provide?
A: We provide the Mill Test Certificate (MTC), Material Certificate, and Hydro Test Report along with the shipment. Third-party inspection (like SGS/BV) is also acceptable upon request.