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The product is a custom‑made SUS420 stainless‑steel wafer ring supplied by Donghongxin in Shenzhen, China. The ring’s thickness is not fixed; it is calculated from the depth of the film tray of the buyer’s equipment. The supplier requires the buyer to provide that depth so that the appropriate ring thickness can be machined. The material grade SUS420 is a martensitic stainless steel commonly used for wear‑resistant components.
In the metal‑working sector SUS420 rings are usually heat‑treated to achieve a hardness between 45 and 55 HRC. Typical tensile strength after treatment lies in the 450‑650 MPa range. Surface finishes such as ground or polished are offered with dimensional tolerances of ±0.05 mm. Standard inner diameters run from 10 mm to 200 mm and outer diameters from 20 mm to 400 mm, allowing the part to fit a wide variety of machines.
The rings are used in semiconductor equipment, precision optics holders and other automation fixtures that require a reliable, corrosion‑resistant interface. Buyers are typically OEMs or contract manufacturers who need a bespoke size and may order in low to medium volumes. Donghongxin does not list a minimum order quantity or lead time, so the importer should request those details directly. Payment and incoterm terms are negotiated per transaction, and the supplier’s “harbor” verification indicates a basic level of platform trust.
| Material | SUS420 stainless steel |
| Custom thickness | Determined from equipment film‑tray depth, supplied by buyer |
| Typical hardness | typical 45‑55 HRC after heat treatment |
| Typical tensile strength | typical 450‑650 MPa |
| Typical surface finish tolerance | typical ±0.05 mm |
| Typical inner diameter range | typical 10‑200 mm |
| Typical outer diameter range | typical 20‑400 mm |
| Typical weight range per piece | typical 0.5‑5 kg depending on size |
Donghongxin is located at 1st Floor, Building 12, Wanfeng Dayangtian Industrial Zone, Shajing Street, Baoan District, Shenzhen, Guangdong, China, postal code 518000. The supplier is listed with a “harbor” trust tier on the platform, indicating it has passed basic verification. Its profile shows a response rate of 0.00 and an average response time of 0 hours, meaning it has not yet responded to platform inquiries.
Donghongxin states that it can design and process SUS420 wafer rings according to client‑provided specifications, including custom thickness derived from equipment parameters. The listing does not disclose certifications, minimum order quantities or lead‑time estimates, so prospective buyers should confirm those details directly with the supplier.
| 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 |
Before placing an order with Donghongxin, verify that the material grade, SUS420, meets your project specifications by requesting a mill test certificate or a recent hardness report. Confirm the exact depth of the film‑tray of your equipment, as this value defines the custom thickness of the wafer ring. Ask the supplier to provide a detailed drawing or CAD file of the proposed ring to avoid dimensional misunderstandings.
Discuss the preferred shipping terms early; most Chinese manufacturers quote FOB Shenzhen, but you may negotiate CIF or EXW depending on your logistics network. Clarify the payment schedule, such as a 30 % advance by telegraphic transfer followed by the balance against documents. Because the supplier’s response rate is currently zero, ensure you have an alternative communication channel, for example a direct email or phone line, before finalising the contract.
Arrange for a third‑party inspection either before shipment or at the loading port to confirm dimensional tolerance, surface finish and hardness. Request that Donghongxin supply a final inspection report and a certificate of conformity that references the agreed specifications. If you require additional testing, such as corrosion resistance or fatigue life, include those requirements in the purchase agreement so the supplier can schedule the appropriate laboratory analyses.
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When sourcing Custom Sus420 Wafer Ring for your business, securing the right balance of quality and cost is essential. Donghongxin, a supplier based in China, offers this product for international export. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $8.4/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is a staple in the Slip Rings sector with strong demand from importing countries worldwide.
Importing Custom Sus420 Wafer Ring requires careful attention to shipping logistics, customs compliance, and secure payment terms. Donghongxin offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. 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. Ask the supplier of this Custom Sus420 Wafer Ring 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 Slip Rings category and connect with top-tier exporters on our comprehensive global B2B marketplace. Start your sourcing journey today.
Importing Custom Sus420 Wafer Ring 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 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 Custom Sus420 Wafer Ring from Donghongxin is $8.4/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 Donghongxin through EximNext.
The supplier, Donghongxin, has set a Minimum Order Quantity (MOQ) of 1 Bags for Custom Sus420 Wafer Ring. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
The HS Code classification for Custom Sus420 Wafer Ring depends on the specific grade and form. Contact Donghongxin through EximNext for the exact HS Code and customs documentation required for your destination country.
To import Custom Sus420 Wafer Ring from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Donghongxin. Ensure you have the necessary import licenses for Slip Rings products in your destination country.
Open the Donghongxin 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.
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to Donghongxin through EximNext.
Donghongxin offers Custom Sus420 Wafer Ring with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Custom Sus420 Wafer Ring is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Donghongxin through our platform.
Donghongxin maintains international quality certifications. These ensure that the Custom Sus420 Wafer Ring 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. Donghongxin 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 Donghongxin.
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