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Bellow expansion joint
The axial bellow expansion joint is engineered to absorb thermal movement, vibration and mechanical stress in piping systems. It features a multi-ply stainless steel bellow with a design pressure of 1.6 MPa and a temperature range from -40 °C to 400 °C, accommodating axial compression and extension up to 30 mm. The flanged ends are carbon steel ASTM A105, compatible with DN50 to DN600 pipelines.
Material construction consists of AISI 321 stainless steel for the bellow, with a typical wall thickness of 0.5 mm to 2 mm depending on diameter. The convolutions are hydraulically formed for consistent wall thinning control, a standard practice in pressure-balanced designs. Industry standards for such joints often reference ASME B31.3 for process piping and EJMA for expansion joint manufacturing guidelines.
Primary buyers are EPC contractors in oil and gas, chemical plants and power stations where thermal cycling is frequent. The joint is supplied with a factory hydrostatic test certificate, and packaging is wooden crates for sea freight. Buyers should confirm the exact axial stroke, lateral deflection and angular rotation limits for their system layout, as these vary by model and are not universally specified.
| Type | Axial bellow expansion joint |
| Material (bellow) | AISI 321 stainless steel |
| Material (flanges) | Carbon steel ASTM A105 |
| Design pressure | 1.6 MPa |
| Temperature range | -40 °C to 400 °C |
| Axial movement | 30 mm compression and extension |
| Nominal diameter range | DN50 to DN600 |
| Wall thickness (bellow) | 0.5 mm to 2 mm typical |
| Formation method | Hydraulic forming, standard |
| Test standard | Hydrostatic test to ASME B31.3 typical |
Qinhuangdao Yutian Science And Technology Co., Ltd. operates from No.16 Heilongjiang Road in the Qinhuangdao Development Area, Hebei Province. The company is classified as an imported-tier supplier with a harbor trust tier, indicating a baseline level of trade verification. Its address places it within a recognized industrial zone for metal fabrication and pressure equipment.
The listing does not state response metrics, certifications or production capacity, so these details should be confirmed directly with the supplier. The profile positions the company as a specialist in pipe components, with the axial bellow expansion joint as a core product line. No additional claims about history, client base or quality systems are provided in the available data.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | Contact Supplier |
| Response Rate | New Supplier |
Sourcing Bellow expansion joint from Qinhuangdao Yutian Science And Technology Co., Ltd. - China Import Guide
Before ordering, verify the exact axial, lateral and angular movement ranges required for your pipeline layout. Confirm that the design pressure and temperature ratings meet or exceed your system’s operating conditions, as under-specifying can lead to premature failure.
Logistics should be planned around sea freight, with the product packaged in wooden crates. Confirm the Incoterms (e.g., FOB Qinhuangdao) and payment terms, as these are not specified in the listing. Lead times for custom diameters or materials may extend beyond standard stock items.
Quality checks should include visual inspection of the bellow convolutions for uniform forming and absence of cracks, as well as review of the hydrostatic test certificate. Request third-party inspection if the application is critical, and ensure all documentation aligns with your project’s compliance requirements.
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30 suppliersBuy & Import Bellow Expansion Joint — Wholesale Supply from China
Securing a reliable supply chain for Bellow Expansion Joint is critical for maintaining your business operations. Qinhuangdao Yutian Science And Technology Co., Ltd., a supplier located in China, provides high-quality Bellow Expansion Joint ready for international export. By connecting directly with this supplier, buyers can bypass intermediaries, negotiate custom wholesale pricing, and arrange bulk shipments. This product is a key offering within the Products industry, catering to distributors, wholesalers, and importers worldwide.
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About Qinhuangdao Yutian Science And Technology Co., Ltd. — Supplier in China
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