Premium Bellows Pipe for Reliable Metal Expansion Joint Applications

Product Description

Company Profile

Attribute

Advantages

1.Using 304/316L stainless steel, in compliance with the GB/T 12777 standard

2.Flange connection, standardized design

3.The working temperature range is wide (ranging from -20℃ to +300℃), and the specifications are complete.

4.Provides a 1-2 year warranty and supports customization (OEM/ODM

5.Optimize the bellows design and select high-strength materials

1.Corrosion-resistant, high-pressure-resistant

2.Easy and quick to install, no special tools or on-site welding required

3.Adapt to thermal expansion and contraction, vibration issues in various industrial scenarios such as power, petrochemical, and shipbuilding

4.Full leakage test, ISO and other quality system certifications, and controllable production

5.Extend the product's service life and enable continuous and stable operation for many years 

Attribute	Advantages
Multilayer stainless steel corrugated pipe	Higher pressure resistance, more flexibility
Reinforced carbon steel flanges	Strong connection, prevents leakage
Customizable length & diameters	Fits any pipeline layout, easy to install
Tie rods & limit rods design	Controls movement, protects adjacent equipment

Specification

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Quality Commitment: All products are designed, manufactured, and tested in strict compliance with GB/T 12777-2019 and the Expansion Joint Manufacturers Association (EJMA) Standards. Material Certificates and Pressure Test Reports are available for each unit.
Service Support: We provide full-project technical support, from professional selection consultation to installation guidance.Multiple specifications can be customized.

Certifications

Packing & Delivery

FAQ

1. Q: What core certifications do your metal woven hoses have? Can they meet the standards for export to markets such as the EU and North America?
A: Our products have passed the ISO 9001 quality management system certification and comply with the EU PED pressure equipment directive, the US ASTM/SAE standards, and the RoHS environmental protection requirements. We can provide a complete set of certification documents to support your smooth entry into the target markets.

2. Q: How do you ensure the pressure resistance and durability of the hose? What specific test reports are there?
A: We use high-strength stainless steel wire weaving (typically at 304 or 316L grades), and conduct pulse pressure tests, burst pressure tests, and salt spray corrosion tests. All test reports can be provided upon customer request to ensure the hose's safety and reliability under the specified working pressure.

3. Q: Can the specifications and materials of the hose connectors be customized? What is the minimum order quantity (MOQ)?
A: Full customization is supported, including connector thread standards (NPT, BSP, JIC, etc.), materials (carbon steel, stainless steel), length, and bending angle. The MOQ is usually 500-1000 meters. The specific quantity is determined based on the specifications and can be negotiated. Small batch trial orders are also supported.

4. Q: What extreme media and environments can the hose be used for? Are there any specific models that are resistant to high temperatures, corrosion, or wear?
A: We offer dedicated models suitable for hydraulic oil, fuel, chemical media, high-temperature steam, etc. For instance, the PTFE inner tube type is resistant to strong corrosion, and the double-layer woven type is suitable for high-pressure and high-temperature environments. Please provide specific working conditions, and we will recommend the most suitable model.

5. Q: How long does the delivery period usually take? Does the company support urgent orders?
A: Standard products are well stocked, and they will be dispatched within 7 to 15 days after the order is placed. Customized products have a production cycle of 20 to 30 days. We have a rapid response channel. For urgent needs, we can negotiate for expedited production to ensure that it does not affect your project schedule.

6. Q: How about the packaging and transportation methods? Can you provide rust-proof packaging suitable for long-term sea transportation?
A: We use moisture-proof oil paper + woven bags + pallets for full protection packaging. We can also offer vacuum packaging or VCI rust-proof film to ensure protection against corrosion during long-distance sea transportation or long-term storage. We support various trade terms such as FOB, CIF or EXW.

7. Q: How can we ensure the consistency of quality for large-scale orders? Is there any quality control during the production process?
A: We implement QC tracking throughout the entire production process, from raw material entry to finished product release. Each batch of products undergoes size, pressure, and leakage tests, and samples are kept for archival purposes. We can accept inspection by customers or third parties (such as SGS) to ensure stable performance in mass production.

8. Q: If there are any product issues, what is your after-sales and claim process like?
A: We offer a quality guarantee period of 12 to 24 months. In case of any quality problems, please provide photos/videos and the batch number. We will respond within 24 hours. If it is indeed a quality issue, we will cover the cost of replacing the product or providing compensation.

9. Q: Can you provide complete technical support documents, such as CAD drawings, installation guidelines or compliance statements?
A: Yes. We can offer 2D/3D drawings (in formats like STEP, IGES, PDF), technical parameter sheets, installation instruction manuals and compliance declaration documents for each product. This will facilitate your integration into the product catalogue or delivery to end customers.

10. Q: We plan for long-term procurement. Can you offer tiered quotations and annual purchase agreements?
A: We highly value long-term cooperation with B-end customers. Based on the estimated annual procurement volume, we can provide competitive tiered prices and sign an annual framework agreement to ensure stable prices and priority supply.