Import 4130 Forged Rings 4140 Forged Rings 8620h — Buy in wholesale FOB from Supplier in China
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4130 Forged Rings 4140 Forged Rings 8620H
Jiangsu Rongcheng Forgings Co., Ltd. produces hot rolled and forged alloy steel rings in grades 4130, 4140, and 8620H, manufactured through quenching and tempering followed by CNC machining. The 4130 grade is a chromium-molybdenum alloy known for weldability and moderate strength, while 4140 adds higher carbon for superior tensile and yield strength. The 8620H variant is a nickel-chromium-molybdenum steel, offering deeper hardenability and fatigue resistance for heavy-duty applications.
These rings are supplied as seamless, closed-die forgings with grain flow oriented to maximize structural integrity under cyclic loads. Typical industry standards for such rings include ASTM A646 for carbon and alloy steel forgings, with surface finishes often held to 125 RMS or better. Machined bores and outer diameters are commonly toleranced to ±0.010 inches, with concentricity held to 0.005 inches TIR for precision applications. The material’s microstructure is refined through controlled forging temperatures and post-forge heat treatment to ensure uniform mechanical properties.
Primary buyers include manufacturers of fasteners, aerospace components, and heavy machinery such as gears, flanges, and pressure vessels. The forgings are exported in bulk with flexible MOQs, typically packed in wooden crates or steel skids to prevent deformation during transit. Buyers should confirm dimensional tolerances and heat treatment certificates, as these are critical for downstream machining and performance in high-stress environments.
| Material Grades | Alloy Steel 4130, 4140, 8620H |
| Manufacturing Process | Hot Rolling, Forging, Quenching and Tempering, CNC Machining |
| Primary Alloying Elements (4130) | Chromium, Molybdenum |
| Primary Alloying Elements (4140) | Chromium, Molybdenum |
| Primary Alloying Elements (8620H) | Nickel, Chromium, Molybdenum |
| Typical Tensile Strength (4130, as-forged) | 635-860 MPa typical |
| Typical Tensile Strength (4140, Q&T) | 860-1000 MPa typical |
| Typical Hardness (8620H, Q&T) | 28-34 HRC typical |
| Standard Surface Finish | 125 RMS or better typical |
| Typical Dimensional Tolerance (Machined) | ±0.010 inches typical |
| Concentricity Tolerance | 0.005 inches TIR typical |
| Applicable Standard | ASTM A646 typical |
Jiangsu Rongcheng Forgings Co., Ltd. is based in Zhangjiagang, Jiangsu Province, operating from No.589, Yangjin Road, Jinfeng Town. The company specializes in the production of alloy steel forgings, including rolled rings and custom-shaped components for industrial and aerospace applications. Its facility is equipped for hot rolling, forging, and precision machining, with capabilities to handle both small and large batch orders for global export.
The supplier is classified under the harbor trust tier, indicating a verified manufacturing presence and export capability. While the listed response rate and average response hours are currently unavailable, the company’s focus remains on delivering forged products that meet strict mechanical and dimensional specifications. Buyers are encouraged to request updated verification details and production certifications directly from the supplier to confirm compliance with project requirements.
We supply premium 4130, 4140, and 8620H alloy forged rings manufactured through hot rolling, forging, and quenching and tempering processes. These CNC machined rings offer superior tensile strength and fatigue resistance for critical fastener, aerospace, and heavy machinery applications. As a China-based manufacturer, we offer competitive pricing and flexible MOQ for global export buyers seeking reliable alloy ring components.
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Sourcing 4130 Forged Rings 4140 Forged Rings 8620H from Jiangsu Rongcheng Forgings Co., Ltd. - China Import Guide
Before ordering, verify the exact material grade and heat treatment process to ensure the forged rings meet your mechanical and dimensional requirements. Request material test reports and heat treatment certificates to confirm compliance with standards such as ASTM A646. It is also important to check the supplier’s capabilities for custom sizes and secondary machining to avoid downstream processing issues.
Confirm logistics details, including lead times, which can vary based on order volume and current production schedules. Discuss Incoterms such as FOB or CIF to clarify responsibility for shipping costs, insurance, and risk transfer. Payment terms should also be agreed upon in advance, with options typically including TT (Telegraphic Transfer) or LC (Letter of Credit) for international transactions.
Inspect the rings upon receipt for dimensional accuracy, surface finish, and freedom from defects such as cracks or inclusions. Use calibrated measuring tools to verify bores, outer diameters, and concentricity against the specified tolerances. Request a third-party inspection if required by your quality management system, and ensure all documentation, including packing lists and certificates of conformity, is complete and accurate.
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30 suppliersBuy 4130 Forged Rings 4140 Fo in Bulk — Verified Supplier in China
When sourcing 4130 Forged Rings 4140 Forged Rings 8620h for your business, securing the right balance of quality and cost is essential. Jiangsu Rongcheng Forgings Co., Ltd., a verified supplier based in China, offers this product with key specifications including 4130, 4140, 8620H alloy steel forged rings (multiple grades available), 4130: Cr 0.80-1.10%, Mo 0.15-0.25%, C 0.28-0.33%; 4140: Cr 0.80-1.10%, Mo 0.15-0.25%, C 0.38-0.43%; 8620H: Ni 0.40-0.70%, Cr 0.40-0.60%, Mo 0.15-0.25%, C 0.18-0.23%, and Custom OD/ID/height per buyer drawing; standard sizes available upon request. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $100/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 7326.90, making it a staple in the Fasteners sector with strong demand from importing countries worldwide.
4130 Forged Rings 4140 Fo Specifications, Trade Terms & Pricing
Importing 4130 Forged Rings 4140 Fo requires careful attention to shipping logistics, customs compliance, and secure payment terms. Jiangsu Rongcheng Forgings 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 7326.90 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 online B2B marketplace designed to make cross-border trade secure and efficient.
About Jiangsu Rongcheng Forgings Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this 4130 Forged Rings 4140 Fo 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 Fasteners category and connect with top-tier exporters on our comprehensive B2B marketplace. Start your sourcing journey today.
Import 4130 Forged Rings 4140 Fo — Shipping, Logistics & Customs
Importing 4130 Forged Rings 4140 Fo 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 7326.90 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 4130 Forged Rings 4140 Fo
What is the wholesale price of 4130 Forged Rings 4140 Forged Rings 8620h?
The current listed wholesale price for 4130 Forged Rings 4140 Forged Rings 8620h from Jiangsu Rongcheng Forgings Co., Ltd. is $100/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 Jiangsu Rongcheng Forgings Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for 4130 Forged Rings 4140 Fo?
The supplier, Jiangsu Rongcheng Forgings Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for 4130 Forged Rings 4140 Fo. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for 4130 Forged Rings 4140 Forged Rings 8620h?
For international shipping and customs clearance, 4130 Forged Rings 4140 Forged Rings 8620h is classified under HS Code 7326.90. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import 4130 Forged Rings 4140 Fo from China?
To import 4130 Forged Rings 4140 Fo from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Jiangsu Rongcheng Forgings Co., Ltd.. Ensure you have the necessary import licenses for Fasteners products in your destination country.
Is Jiangsu Rongcheng Forgings Co., Ltd. a verified supplier?
Yes, Jiangsu Rongcheng Forgings 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 4130 Forged Rings 4140 Forged Rings 8620h?
The key specifications for 4130 Forged Rings 4140 Forged Rings 8620h supplied by Jiangsu Rongcheng Forgings Co., Ltd. include 4130, 4140, 8620H alloy steel forged rings (multiple grades available), 4130: Cr 0.80-1.10%, Mo 0.15-0.25%, C 0.28-0.33%; 4140: Cr 0.80-1.10%, Mo 0.15-0.25%, C 0.38-0.43%; 8620H: Ni 0.40-0.70%, Cr 0.40-0.60%, Mo 0.15-0.25%, C 0.18-0.23%, and Custom OD/ID/height per buyer drawing; standard sizes available upon request. 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 4130 Forged Rings 4140 Fo?
Jiangsu Rongcheng Forgings Co., Ltd. offers 4130 Forged Rings 4140 Fo with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import 4130 Forged Rings 4140 Fo the most?
4130 Forged Rings 4140 Fo is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Jiangsu Rongcheng Forgings Co., Ltd. through our platform.
What certifications does this 4130 Forged Rings 4140 Fo supplier hold?
Jiangsu Rongcheng Forgings Co., Ltd. maintains international quality certifications. These ensure that the 4130 Forged Rings 4140 Fo meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for 4130 Forged Rings 4140 Forged Rings 8620h on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Jiangsu Rongcheng Forgings 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 Jiangsu Rongcheng Forgings Co., Ltd..
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