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The DI Restrained Flange Adaptor is a heavy‑duty ductile‑iron fitting designed to join flanged equipment to plain‑end pipelines while providing axial restraint against pull‑out forces. It is cast from ductile iron (SG iron / nodular cast iron) and conforms to major standards such as ANSI/ASME, BS and ISO, ensuring dimensional accuracy and mechanical performance. The adaptor incorporates a built‑in restraint sleeve that secures the joint against longitudinal forces, a feature that is typical for high‑stress water‑transmission and industrial process systems.
The ductile‑iron construction delivers superior strength and corrosion resistance compared with conventional cast iron, extending service life in aggressive environments. A corrosion‑preventive coating is applied to the exterior, a standard finish for fittings intended for municipal and industrial use. In the market, these adaptors are commonly supplied in nominal diameters from DN100 to DN900, packed on wooden pallets with rust‑preventive wrapping, which is a typical logistics practice for bulk steel components.
Users such as municipal water authorities, plant engineers and construction contractors specify the restrained adaptor when a reliable, leak‑free connection with axial restraint is required. International buyers receive quotations on FOB or CIF terms, with bulk quantities priced per nominal size; exact MOQ, lead time and payment conditions must be validated with the supplier. Prior to ordering, buyers should verify the applicable standards, coating type and the presence of a restraint sleeve to match project specifications.
| Material | Ductile Iron (SG Iron / Nodular Cast Iron) |
| Standard compliance | ANSI/ASME, BS, ISO (typical) |
| Design feature | Axial restraint sleeve for pull‑out resistance |
| Nominal diameter range | DN100‑DN900 (typical) |
| Pressure rating | Up to PN20 (typical for restrained designs) |
| Coating | Corrosion‑preventive coating (standard) |
| Packaging | Wooden pallet with rust‑preventive wrap (standard) |
| Connection type | Flanged equipment to plain‑end pipe |
| Typical weight per unit | ≈ 12 kg for DN250 (typical) |
| Typical length | 1.2 m (standard) |
Qingdao Allied Industrial Co. Ltd operates from 2210 Block B, China Resources Building, No. 6 Shandong Rd., Qingdao, Shandong 266071, China. The supplier holds a harbour‑level trust tier, indicating a basic level of verification, while its response rate is recorded as 0 % with no average response time, suggesting limited engagement on the platform.
The company lists a portfolio of ductile‑iron pipe fittings, including quick‑flange and restrained adaptors, aimed at water‑distribution, wastewater and industrial process applications. It sources the castings from local manufacturers in China and offers them for export, without claiming specific certifications, client references or production capacities beyond the details provided in each product entry.
The DI Restrained Flange Adaptor is a heavy-duty ductile iron pipe fitting engineered to connect flanged equipment to plain-end pipelines while providing axial restraint against pull-out forces. Designed for water transmission, wastewater, and industrial process systems, it conforms to major standards such as ANSI/ASME, BS, and ISO. This fitting is widely sourced by contractors, municipalities, and engineering firms engaged in infrastructure and process plant projects, making it a staple in global pipe fitting trade. The ductile iron construction offers superior strength and corrosion resistance compared to conventional cast iron, extending service life in demanding environments. Export packaging typically involves wooden palletization with rust-preventive coating for secure international transit.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | <4h |
| Response Rate | New Supplier |
Before committing to purchase, ask the supplier for a mill test report, coating thickness data and the specific standards (ANSI/ASME, BS, ISO) that the adaptor complies with. These documents confirm that the material grade and restraint sleeve meet the performance criteria required for your project.
Clarify the Incoterm (FOB or CIF), estimated sea‑freight transit time and the port of discharge with the supplier. Payment terms are usually arranged via T/T in advance or an irrevocable L/C at sight; ensure the agreed terms are documented in the contract.
To minimise risk, engage a third‑party inspection agency to conduct pre‑shipment checks, including dimensional verification, coating inspection and a pressure test of the assembled joint. Request the inspection report, a certificate of compliance and any relevant test certificates before the goods leave the factory. These steps help guarantee that the restrained adaptor meets your technical specifications and project schedule.
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When sourcing Di Restrained Flange Adaptor for your business, securing the right balance of quality and cost is essential. Qingdao Allied Industrial Co. Ltd, a verified supplier based in China, offers this product with key specifications including DI Restrained Flange Adaptor, Ductile Iron (Grade 400-15 / 450-10 per ISO 1083), and DN50 - DN1200 (2" - 48"), various pressure ratings. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $220/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 7307.19, making it a staple in the Flanges sector with strong demand from importing countries worldwide.
Importing Di Restrained Flange Adap requires careful attention to shipping logistics, customs compliance, and secure payment terms. Qingdao Allied Industrial Co. Ltd 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 7307.19 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 B2B marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. The supplier of this Di Restrained Flange Adap 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 Flanges category and connect with top-tier exporters on our comprehensive global B2B marketplace. Start your sourcing journey today.
Importing Di Restrained Flange Adap 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 7307.19 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
The current listed wholesale price for Di Restrained Flange Adaptor from Qingdao Allied Industrial Co. Ltd is $220/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 Qingdao Allied Industrial Co. Ltd through EximNext.
The supplier, Qingdao Allied Industrial Co. Ltd, has set a Minimum Order Quantity (MOQ) of 1 Bags for Di Restrained Flange Adap. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
For international shipping and customs clearance, Di Restrained Flange Adaptor is classified under HS Code 7307.19. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
To import Di Restrained Flange Adap from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Qingdao Allied Industrial Co. Ltd. Ensure you have the necessary import licenses for Flanges products in your destination country.
Yes, Qingdao Allied Industrial Co. Ltd 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.
The key specifications for Di Restrained Flange Adaptor supplied by Qingdao Allied Industrial Co. Ltd include DI Restrained Flange Adaptor, Ductile Iron (Grade 400-15 / 450-10 per ISO 1083), and DN50 - DN1200 (2" - 48"), various pressure ratings. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
Qingdao Allied Industrial Co. Ltd offers Di Restrained Flange Adap with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Di Restrained Flange Adap is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Qingdao Allied Industrial Co. Ltd through our platform.
Qingdao Allied Industrial Co. Ltd maintains international quality certifications. These ensure that the Di Restrained Flange Adap meets international quality, safety, and regulatory standards required for cross-border trade.
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Qingdao Allied Industrial Co. Ltd will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
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 Qingdao Allied Industrial Co. Ltd.
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