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Ductile Iron Pipe Flange Fittings
Ductile Iron Pipe Flange Fittings from Qingdao Valtech Manufacturing Co., Ltd. are cast from EN-GJS-500-7 spheroidal graphite iron, offering tensile strength above 500 MPa and elongation of at least 7%. These fittings are manufactured to ISO 2531 and EN 545 standards, with nominal sizes ranging from DN40 to DN600 and pressure ratings of PN16 or PN25. Each component is designed for seamless integration into water distribution, sewage, and industrial fluid systems where mechanical stress and ground movement are common.
The material composition ensures superior impact resistance compared to grey iron, with graphite in spherical form reducing stress concentration. Surface finish is typically sand-blasted and coated with fusion-bonded epoxy or bituminous paint for corrosion protection, though external coating is customizable. Internal surfaces are left bare unless specified for aggressive media. These fittings are not threaded; they are designed for flanged connections using bolted gasketed joints, consistent with global pipeline standards.
Buyers in municipal water authorities, civil engineering contractors, and industrial plant operators across Southeast Asia, the Middle East, and Eastern Europe source these fittings for infrastructure projects requiring durability under variable soil conditions. Packaging is in wooden crates with moisture barriers and steel strapping, suitable for ocean freight. Lead time is typically 30 to 45 days after order confirmation, and ex-works or FOB Qingdao are the standard trade terms. MOQ is negotiable based on order volume and size mix.
| Material | EN-GJS-500-7 Ductile Iron (Spheroidal Graphite Iron) |
| Pressure Rating | PN16 or PN25 |
| Nominal Size Range | DN40 to DN600 |
| Standards Conformance | ISO 2531, EN 545 |
| Flange Face Type | Raised Face (RF), typical for water and sewage applications |
| Bolt Hole Pattern | Complies with ISO 7005-2, typical for PN16/PN25 flanges |
| Wall Thickness | Varies by size and pressure rating; typical minimum wall thickness for DN150 PN16 is 12.5 mm |
| Surface Treatment | Sand-blasted; external coating typically fusion-bonded epoxy or bitumen, standard for corrosion resistance in buried applications |
| Internal Finish | As-cast, typical for non-aggressive fluid systems; polished or lined options available on request |
| Packaging | Wooden crates with moisture-resistant lining, standard for export shipments |
Qingdao Valtech Manufacturing Co., Ltd. operates from Jihongtan Town in Qingdao’s Chengyang District, Shandong Province, with direct access to the Port of Qingdao for export logistics. The company has been producing ductile iron pipe fittings and joints for over 15 years, focusing on flanged components for municipal and industrial pipelines. Their production capacity is geared toward medium to large orders, with in-house casting, machining, and quality control. No claims are made about certifications beyond material standards, nor about client lists or annual output volume.
The supplier’s response rate and average response time are not recorded in the listing, indicating no active buyer communication channel is currently verified. Their trust tier is listed as 'harbor', suggesting they are registered with Qingdao’s export authority but not independently audited by third-party verification services. Buyers should request test reports for each batch and confirm coating specifications directly before shipment.
Ductile iron pipe flange fittings are high-strength cast components used for reliable pipe connections in water supply, sewage, and industrial pipeline systems. Manufactured from spheroidal graphite iron for superior impact resistance and flexibility, these fittings conform to ISO 2531 and EN 545 standards and are available in sizes DN40 to DN600 with PN16 or PN25 pressure ratings. Ideal for global import/export trade, they are typically packed in wooden crates with export-grade packaging for long-distance logistics.
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Sourcing Ductile Iron Pipe Flange Fittings from Qingdao Valtech Manufacturing Co., Ltd. - China Import Guide
Before placing an order, verify the material grade is EN-GJS-500-7 with a mill test certificate for each batch. Confirm the pressure rating matches your system requirements, and request documentation showing compliance with ISO 2531 and EN 545. Inspect coating specifications - ensure external finishes meet your environmental conditions, especially for buried or marine use. Do not assume standard coatings are suitable for potable water or corrosive soils without written confirmation.
Lead time is typically 30 to 45 days after order confirmation and deposit. Incoterms offered are usually ex-works or FOB Qingdao. Buyers must clarify who arranges and pays for export customs clearance, inland transport, and marine insurance. Payment terms are commonly 30% advance with balance against shipping documents. Confirm the supplier’s ability to issue a commercial invoice, packing list, and certificate of origin in the required format for your import authority.
On arrival, inspect for surface cracks, coating damage, or deformation. Verify flange face flatness and bolt hole alignment using a feeler gauge and template. Request batch-specific test reports for tensile strength, elongation, and graphite spheroid count. Retain samples for third-party lab testing if the project is regulated. Ensure all documentation matches the order, including size, pressure rating, and coating type. Discrepancies in material or finish must be reported before installation.
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30 suppliersBuy Ductile Iron Pipe Flange in Bulk — Supplier in China
When sourcing Ductile Iron Pipe Flange Fittings for your business, securing the right balance of quality and cost is essential. Qingdao Valtech Manufacturing Co., Ltd., a supplier based in China, offers this product with key specifications including Ductile Iron EN-GJS-500-7 or EN-GJS-450-10, Type T/A / K9 compatible, Spheroidal Graphite min. 80%, Carbon 3.2-3.6%, Silicon 2.2-2.9%, Tensile Strength >= 500 MPa, and DN40 to DN600 (1.5" to 24"), various types: elbow, tee, reducer, flange adapter, cap. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $850 – $1,400 / MT 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.
Ductile Iron Pipe Flange Specifications, Trade Terms & Pricing
Importing Ductile Iron Pipe Flange requires careful attention to shipping logistics, customs compliance, and secure payment terms. Qingdao Valtech Manufacturing 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 global B2B marketplace designed to make cross-border trade secure and efficient.
About Qingdao Valtech Manufacturing Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. Ask the supplier of this Ductile Iron Pipe Flange for business registration and quality documents before ordering. 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 manufacturers and exporters across 200+ countries. Explore similar products in the Flanges category and connect with top-tier exporters on our comprehensive import export marketplace. Start your sourcing journey today.
Import Ductile Iron Pipe Flange — Shipping, Logistics & Customs
Importing Ductile Iron Pipe Flange 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).
Frequently Asked Questions About Ductile Iron Pipe Flange
What is the wholesale price of Ductile Iron Pipe Flange Fittings?
The current listed wholesale price for Ductile Iron Pipe Flange Fittings from Qingdao Valtech Manufacturing Co., Ltd. is $850 – $1,400 / MT 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 Valtech Manufacturing Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Ductile Iron Pipe Flange?
The supplier, Qingdao Valtech Manufacturing Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Ductile Iron Pipe Flange. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Ductile Iron Pipe Flange Fittings?
For international shipping and customs clearance, Ductile Iron Pipe Flange Fittings is classified under HS Code 7307.19. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Ductile Iron Pipe Flange from China?
To import Ductile Iron Pipe Flange from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Qingdao Valtech Manufacturing Co., Ltd.. Ensure you have the necessary import licenses for Flanges products in your destination country.
How can I check Qingdao Valtech Manufacturing Co., Ltd. before ordering?
Open the Qingdao Valtech Manufacturing Co., Ltd. company profile on EximNext to see the details the company has provided. Before a bulk order, ask for business registration, certificates and export documents, and consider a sample or a small trial order.
What are the key specifications of Ductile Iron Pipe Flange Fittings?
The key specifications for Ductile Iron Pipe Flange Fittings supplied by Qingdao Valtech Manufacturing Co., Ltd. include Ductile Iron EN-GJS-500-7 or EN-GJS-450-10, Type T/A / K9 compatible, Spheroidal Graphite min. 80%, Carbon 3.2-3.6%, Silicon 2.2-2.9%, Tensile Strength >= 500 MPa, and DN40 to DN600 (1.5" to 24"), various types: elbow, tee, reducer, flange adapter, cap. 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 Ductile Iron Pipe Flange?
Qingdao Valtech Manufacturing Co., Ltd. offers Ductile Iron Pipe Flange with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Ductile Iron Pipe Flange the most?
Ductile Iron Pipe Flange is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Qingdao Valtech Manufacturing Co., Ltd. through our platform.
What certifications does this Ductile Iron Pipe Flange supplier hold?
Qingdao Valtech Manufacturing Co., Ltd. maintains international quality certifications. These ensure that the Ductile Iron Pipe Flange meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Ductile Iron Pipe Flange Fittings on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Qingdao Valtech Manufacturing Co., Ltd. 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 Qingdao Valtech Manufacturing Co., Ltd..
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