Import Double Spring Washer, Spring Washer — Buy in wholesale FOB from Supplier in China
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Double Spring Washer, Spring Washer
The Double Spring Washer, also known as a Railway Helical Spring Lock Washer, is manufactured from spring steel grades 65 Mn and 60Si2Mn to meet railway fastening standards. It is produced via precision stamping with consistent dimensional control, designed to maintain clamping force under vibration and thermal cycling in rail track systems. Surface treatments include plain oiled, hot-dip galvanized, black oxide, and Dacromet, selected based on environmental exposure requirements.
These washers follow standard industrial profiles for helical lock washers used in heavy-duty rail applications, with typical outer diameters ranging from 12mm to 30mm and thicknesses between 1.2mm and 3.0mm. The material hardness typically falls between 42 and 50 HRC, ensuring sufficient resilience without brittleness. The washers are not coated with zinc-nickel or chromate unless specified, as these are not standard for this application in rail infrastructure.
Primary buyers include railway infrastructure contractors, rolling stock manufacturers, and maintenance suppliers in Europe, North America, and Southeast Asia. The product is shipped in double-woven polypropylene bags on fumigated pallets or carbon boxes, with a minimum order quantity of 5000 pieces and a lead time of 25 days after payment. Trade terms include FOB Shanghai under T/T or L/C payment methods, with bulk shipments handled via container freight.
| Material | 65 Mn, 60Si2Mn spring steel |
| Surface Treatment | Plain oiled, HDG, black oxide, Dacromet (as specified) |
| Manufacturing Process | Precision stamping |
| Typical Outer Diameter Range | 12mm to 30mm - standard for rail lock washers |
| Typical Thickness Range | 1.2mm to 3.0mm - typical for helical lock washer applications |
| Hardness Range | 42 to 50 HRC - standard for spring steel lock washers |
| Packaging | Double-woven polypropylene bags on fumigation-free pallets or carbon boxes |
| Certification | Complies with ISO, SGS, TUV standards where applicable |
| Supply Capacity | 3000 metric tons per month |
| Shipment Port | Shanghai |
Kunshan Alex Railway Fastening Co, .Ltd. operates from Suzhou, Jiangsu, China, with a manufacturing facility focused on railway fastening components. The company is verified as a harbor-tier supplier with a documented history of export shipments and compliance with international inspection protocols. The listing confirms production capability for helical spring washers under OEM and OED contracts but provides no details on workforce size, revenue, or client names.
Quality control is conducted at each workshift and upon new batch material intake, with machine adjustments monitored for dimensional consistency. The supplier does not claim ISO 9001 certification as an active status, only that its processes align with ISO, SGS, and TUV requirements. There is no mention of in-house R&D, third-party lab testing, or proprietary tooling beyond standard stamping operations.
| 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 |
Sourcing Double Spring Washer from Kunshan Alex Railway Fastening Co, .Ltd. - China Import Guide
Before ordering, verify the material grade (65 Mn or 60Si2Mn), surface finish, and hardness range with the supplier’s mill test report. Confirm that the washer profile matches your fastener system’s torque and preload requirements. Do not assume compliance with EN 13445 or ASTM F436 unless explicitly certified. Request sample units for fit and function testing prior to bulk shipment.
Lead time is 25 days after payment confirmation. Incoterms are typically FOB Shanghai, but CIF or CFR may be negotiated. Payment is usually 30% advance with 70% against copy of B/L. Buyers should confirm container loading capacity - each 20ft container holds approximately 15 - 18 metric tons depending on packaging. Always request a packing list matching the invoice and MTRs per batch.
Quality checks should include visual inspection for cracks, dimensional verification with calipers, and hardness testing on a representative sample. Request salt spray test reports for coated washers and confirm batch traceability via serial numbers or lot codes. Ensure the supplier provides a signed declaration of conformity for each shipment, especially for infrastructure projects requiring compliance documentation.
Active buying requirements from importers looking for Similar products
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- ✓What prices they're paying
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30 suppliersBuy Double Spring Washer, Spr in Bulk — Verified Supplier in China
When sourcing Double Spring Washer, Spring Washer for your business, securing the right balance of quality and cost is essential. Kunshan Alex Railway Fastening Co, .Ltd., a verified 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 $0.6/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is a staple in the Nuts sector with strong demand from importing countries worldwide.
Double Spring Washer, Spr Specifications, Trade Terms & Pricing
Importing Double Spring Washer, Spr requires careful attention to shipping logistics, customs compliance, and secure payment terms. Kunshan Alex Railway Fastening Co, .Ltd. 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 import export marketplace designed to make cross-border trade secure and efficient.
About Kunshan Alex Railway Fastening Co, .Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Double Spring Washer, Spr 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 Nuts category and connect with top-tier exporters on our comprehensive online B2B marketplace. Start your sourcing journey today.
Import Double Spring Washer, Spr — Shipping, Logistics & Customs
Importing Double Spring Washer, Spr 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).
Frequently Asked Questions About Double Spring Washer, Spr
What is the wholesale price of Double Spring Washer, Spring Washer?
The current listed wholesale price for Double Spring Washer, Spring Washer from Kunshan Alex Railway Fastening Co, .Ltd. is $0.6/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 Kunshan Alex Railway Fastening Co, .Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Double Spring Washer, Spr?
The supplier, Kunshan Alex Railway Fastening Co, .Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Double Spring Washer, Spr. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Double Spring Washer, Spring Washer?
The HS Code classification for Double Spring Washer, Spring Washer depends on the specific grade and form. Contact Kunshan Alex Railway Fastening Co, .Ltd. through EximNext for the exact HS Code and customs documentation required for your destination country.
How can I import Double Spring Washer, Spr from China?
To import Double Spring Washer, Spr from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Kunshan Alex Railway Fastening Co, .Ltd.. Ensure you have the necessary import licenses for Nuts products in your destination country.
Is Kunshan Alex Railway Fastening Co, .Ltd. a verified supplier?
Yes, Kunshan Alex Railway Fastening 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.
What are the key specifications of Double Spring Washer, Spring Washer?
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to Kunshan Alex Railway Fastening Co, .Ltd. through EximNext.
What packaging options are available for bulk orders of Double Spring Washer, Spr?
Kunshan Alex Railway Fastening Co, .Ltd. offers Double Spring Washer, Spr with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Double Spring Washer, Spr the most?
Double Spring Washer, Spr is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Kunshan Alex Railway Fastening Co, .Ltd. through our platform.
What certifications does this Double Spring Washer, Spr supplier hold?
Kunshan Alex Railway Fastening Co, .Ltd. maintains international quality certifications. These ensure that the Double Spring Washer, Spr meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Double Spring Washer, Spring Washer on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Kunshan Alex Railway Fastening 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 Kunshan Alex Railway Fastening Co, .Ltd..
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