Import Expansion Joints — Buy in wholesale FOB from Supplier in China
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Expansion joints offered by Tianjin Donghao Flexible Hose Technology are flexible metal bellows designed for industrial piping. They are manufactured from stainless steel 304/316, carbon steel and duplex steel, providing options for varying corrosion and strength requirements. The joint design absorbs thermal expansion and vibration, maintaining system integrity. The catalogue highlights suitability for power plants, HVAC, chemical processing and marine environments.
Industry practice grades these joints to EN 1339, with typical pressure classes up to 2.5 MPa. Stainless steel 304 is standard, while 316 and duplex alloys are chosen for higher chloride exposure. Expected temperature operation commonly ranges from -20 C to 250 C, covering most marine and petrochemical applications. Metal‑bellows construction delivers fatigue life measured in millions of cycles.
Target buyers include engineering contractors, OEMs and maintenance teams for large-scale facilities. Tianjin Donghao provides quantity discounts and customization, but exact MOQ and lead times are not disclosed and should be verified with the supplier. Importers should request material certificates and confirm the offered incoterms, which may include FOB or CIF.
| Material | Stainless steel 304/316, Carbon steel, Duplex steel (multiple options) |
| Corrosion resistance | Typical excellent for stainless grades, moderate for carbon steel |
| Tensile strength | Typical >= 520 MPa for stainless, >= 400 MPa for carbon steel |
| Pressure rating | Typical up to 2.5 MPa (360 psi) depending on material |
| Temperature range | Typical -20 C to 250 C |
| Size range | Typical DN 20 mm to DN 400 mm (inner diameter) |
| Connection type | Typical flanged, welded or threaded ends |
| Design standard | Typical EN 1339 metal‑bellows joint |
| Anti-explosion feature | Typical built‑in for hazardous environments |
| Packaging | Typical wooden crate with moisture-proof liner |
Tianjin Donghao Flexible Hose Technology is based in the Bin Hai New Area, Jinnan district, Tianjin, China, postal code 300350. The supplier carries a harbour trust tier and a response rate of 0.00 percent, indicating limited interaction on the platform.
The company produces flexible metal tubes and expansion joints, emphasising anti‑corrosion properties and resistance to pressure. They advertise quantity discounts, custom specifications and factory‑outlet pricing, although specific pricing and lead‑time details are not provided in the listing.
Expansion joints are critical flexible components in industrial piping systems, designed to absorb thermal expansion, vibration, and movement across pipelines in power plants, HVAC, chemical processing, and marine applications. Available in stainless steel 304/316, carbon steel, and exotic alloys, these metal bellows and flexible joints operate across pressure ratings and temperature ranges suited to demanding environments. Widely sourced from Asia for export, expansion joints are priced per unit based on size, material grade, and pressure class, making them essential MRO items for engineering contractors and OEM buyers globally.
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Sourcing Expansion joints from Tianjin Donghao Flexible Hose Technology - China Import Guide
Before finalising a purchase, confirm the supplier’s company registration, address and harbour trust tier, and request any material test reports or certifications that verify compliance with EN 1339 standards. Ensure the selected material grade matches the corrosion and strength requirements of your project.
Discuss logistics early by agreeing on the incoterm - typically FOB or CIF - and obtain an estimated lead time based on your order volume. Clarify shipping arrangements, container type and whether the supplier can handle inland transport to the nearest Chinese port.
Arrange quality assurance by planning a third‑party inspection either at the factory or upon arrival, and request the mill test certificate, hydrostatic pressure test report and any other relevant documentation. Verify that the wooden crate and moisture‑proof liner meet your handling and storage specifications.
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30 suppliersBuy Expansion Joints in Bulk — Verified Supplier in China
When sourcing Expansion Joints for your business, securing the right balance of quality and cost is essential. Tianjin Donghao Flexible Hose Technology, a verified supplier based in China, offers this product with key specifications including Metal Bellows Expansion Joint, Universal/Ball/Flexible Type, SS304, SS316, Carbon Steel Q235, Alloy Steel, and DN25 - DN3000 (1" - 120"), flanged or welded connection. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $10/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 7304.90, making it a staple in the Metal Products sector with strong demand from importing countries worldwide.
Expansion Joints Specifications, Trade Terms & Pricing
Importing Expansion Joints requires careful attention to shipping logistics, customs compliance, and secure payment terms. Tianjin Donghao Flexible Hose Technology offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 7304.90 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading global B2B marketplace designed to make cross-border trade secure and efficient.
About Tianjin Donghao Flexible Hose Technology — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Expansion Joints has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Metal Products category and connect with top-tier exporters on our comprehensive import export marketplace. Start your sourcing journey today.
Import Expansion Joints — Shipping, Logistics & Customs
Importing Expansion Joints requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 7304.90 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Expansion Joints
What is the wholesale price of Expansion Joints?
The current listed wholesale price for Expansion Joints from Tianjin Donghao Flexible Hose Technology is $10/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Tianjin Donghao Flexible Hose Technology through EximNext.
What is the Minimum Order Quantity (MOQ) for Expansion Joints?
The supplier, Tianjin Donghao Flexible Hose Technology, has set a Minimum Order Quantity (MOQ) of 1 Bags for Expansion Joints. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Expansion Joints?
For international shipping and customs clearance, Expansion Joints is classified under HS Code 7304.90. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Expansion Joints from China?
To import Expansion Joints from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Tianjin Donghao Flexible Hose Technology. Ensure you have the necessary import licenses for Metal Products products in your destination country.
Is Tianjin Donghao Flexible Hose Technology a verified supplier?
Yes, Tianjin Donghao Flexible Hose Technology is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Expansion Joints?
The key specifications for Expansion Joints supplied by Tianjin Donghao Flexible Hose Technology include Metal Bellows Expansion Joint, Universal/Ball/Flexible Type, SS304, SS316, Carbon Steel Q235, Alloy Steel, and DN25 - DN3000 (1" - 120"), flanged or welded connection. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Expansion Joints?
Tianjin Donghao Flexible Hose Technology offers Expansion Joints with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Expansion Joints the most?
Expansion Joints is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Tianjin Donghao Flexible Hose Technology through our platform.
What certifications does this Expansion Joints supplier hold?
Tianjin Donghao Flexible Hose Technology maintains international quality certifications. These ensure that the Expansion Joints meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Expansion Joints on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Tianjin Donghao Flexible Hose Technology will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Tianjin Donghao Flexible Hose Technology.
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