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Flanges
Dongying Zhengda Metal Product Co., Ltd supplies forged and cast flanges in sizes ranging from DN15 to DN2000, with pressure classes from Class 150 to Class 2500, as per ASME B16.5 and ASME B16.47 standards. Materials include carbon steel A105, stainless steel 304 and 316, and alloy steel A182 F22, with surface finishes specified as mill finish or anti-rust oil coating. Dimensions and bolt hole patterns follow standard templates for weld neck, slip-on, blind, socket weld, and threaded flange types.
The flanges are manufactured using hot forging or casting methods, with material certification available upon request. Typical industry tolerances for face flatness are ±0.1 mm and for bolt hole spacing ±0.2 mm. Standard materials meet ASTM A105 and A182 requirements, with corrosion resistance enhanced through controlled carbon content and trace element balancing. Packaging is typically in wooden crates or steel strapping, with internal moisture barriers for ocean transport.
These flanges are commonly used in oil and gas pipelines, chemical processing plants, and power generation systems where high-pressure sealing is critical. Buyers include engineering contractors, maintenance suppliers, and industrial distributors sourcing for large-scale infrastructure projects. Trade terms offered include FOB Qingdao and CIF, with minimum order quantities starting at 1 metric ton per size and type. Lead times average 25 to 40 days after deposit confirmation, subject to production scheduling.
| Material | A105 carbon steel, 304 stainless steel, 316 stainless steel, A182 F22 alloy steel |
| Pressure Class | Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500 |
| Standards | ASME B16.5, ASME B16.47 Series A and B |
| Size Range | DN15 to DN2000 (NPS 1/2 to 80) |
| Flange Type | Weld neck, slip-on, blind, socket weld, threaded |
| Face Type | Raised face (RF), flat face (FF), ring joint (RTJ) |
| Tolerance on Face Flatness | Typical ±0.1 mm per ASME B16.5 |
| Bolt Hole Spacing Tolerance | Typical ±0.2 mm per ASME B16.5 |
| Surface Finish | Mill finish, anti-rust oil coating |
| Packaging | Wooden crates with moisture barrier, steel strapping |
Dongying Zhengda Metal Product Co., Ltd is a manufacturing supplier based in Shengli Industrial Zone, Dongying, Shandong Province, China. The company specializes in producing flanges and pipe fittings for export markets, with production facilities equipped for forging and casting operations. Its listing indicates it is classified as an imported supplier with harbor trust tier, suggesting verified export experience and logistics readiness.
The supplier does not disclose its annual production volume, workforce size, or client list. There is no public information on certifications such as ISO 9001, PED, or API 6A, nor is there evidence of third-party inspection agreements. Response metrics are not available, indicating limited or no active engagement with buyer inquiries on the platform. Buyers should treat this as a factory-level producer with documented export history but unverified operational details.
| 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 Flanges from Dongying Zhengda Metal Product Co., Ltd - China Import Guide
Before placing an order, verify the material test reports (MTRs) for each batch, ensuring they match the specified grade and heat number. Confirm that dimensions comply with ASME B16.5 or B16.47, and request dimensional drawings for non-standard sizes. Do not assume compliance with international standards unless explicitly documented. Surface finish and coating should be inspected for uniformity and absence of scale or rust before shipment.
Confirm the Incoterms agreed upon, whether FOB Qingdao or CIF destination, as this affects insurance and freight responsibility. Lead time typically ranges from 25 to 40 days, but production backlogs can extend this. Payment terms are usually 30% deposit with balance before shipment. Request a packing list and bill of lading that clearly lists flange type, size, quantity, and material grade per container.
Perform incoming inspection using calipers and gauges to verify flange face flatness, bolt hole spacing, and hub thickness. Check for surface cracks using magnetic particle testing if critical to safety. Request certification documents including material certificates, inspection reports, and export compliance paperwork. Retain samples for future reference, especially for large or custom orders, to ensure consistency in future deliveries.
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30 suppliersBuy & Import Flanges — Wholesale Supply from China
Securing a reliable supply chain for Flanges is critical for maintaining your business operations. Dongying Zhengda Metal Product Co., Ltd, a supplier located in China, provides high-quality Flanges 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 Flanges industry, catering to distributors, wholesalers, and importers worldwide.
Request Wholesale Pricing & Bulk Trade Terms
Navigating the complexities of global sourcing is easier when you have direct access to the right manufacturers and exporters. When importing Flanges from China, buyers can discuss shipping logistics, packaging requirements, and preferred payment terms directly with Dongying Zhengda Metal Product Co., Ltd. This seamless communication is powered by EximNext, a premier B2B marketplace that connects ambitious buyers with global sellers across every major industry.
About Dongying Zhengda Metal Product Co., Ltd — Supplier in China
We understand that verifying supplier credentials is a top priority for importers. Dongying Zhengda Metal Product Co., Ltd is part of our extensive network of vetted international exporters. Browse more products in the Flanges category or discover new suppliers across the Flanges sector. Expand your sourcing capabilities through our trusted global B2B marketplace — the import export marketplace built for serious international trade.
International Shipping & Import Guidelines for Flanges
When importing Flanges from China, buyers should consider shipping terms (FOB, CIF, EXW), customs documentation requirements, and payment security. Contact the supplier to discuss the best logistics options for your destination country.
Frequently Asked Questions About Flanges
How can I get the wholesale price for Flanges?
Click the "Request Quotation" button to contact Dongying Zhengda Metal Product Co., Ltd directly. The supplier will provide a custom quote based on your required bulk quantity and shipping destination.
Can I buy Flanges in bulk from China?
Yes, Dongying Zhengda Metal Product Co., Ltd provides Flanges for bulk export from China. You can negotiate the MOQ, packaging details, and shipping terms directly with the supplier.
What shipping terms are available for this product?
Shipping terms such as FOB, CIF, or EXW can be negotiated directly with Dongying Zhengda Metal Product Co., Ltd. Contact the supplier to discuss the best logistics options for importing Flanges to your country.
How do I request a sample of Flanges?
Send a direct message to Dongying Zhengda Metal Product Co., Ltd through our platform to request a product sample before committing to a large wholesale order.
Is it safe to source products from this supplier?
Dongying Zhengda Metal Product Co., Ltd is a registered supplier on EximNext. Check the company profile and documents before ordering, and use our secure messaging system and standard international payment methods (L/C, T/T, Escrow).
What specifications should I ask for when importing Flanges?
Request a detailed product data sheet including grade, purity, dimensions, material composition, and applicable industry standards from Dongying Zhengda Metal Product Co., Ltd.
Does Dongying Zhengda Metal Product Co., Ltd offer custom packaging or private labeling?
Many suppliers on EximNext, including Dongying Zhengda Metal Product Co., Ltd, offer custom packaging and private label options for bulk wholesale orders.
What payment methods are accepted for international orders?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services.
Can I find more Flanges suppliers on EximNext?
Yes, EximNext hosts a wide network of Flanges manufacturers, exporters, and wholesalers across 200+ countries.
How do I contact Dongying Zhengda Metal Product Co., Ltd for a bulk trade inquiry?
Click "Request Quotation" or "Contact Supplier" on this page. Include your required quantity, destination country, and preferred shipping terms. All communications are managed securely through our B2B marketplace.
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