Import Connection Sleeve — Buy in wholesale FOB from Supplier in China
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Connection Sleeve
Connection sleeves from Quanzhou Weforging Machinery Manufacturing Co., Ltd are precision die-forged mechanical components designed for load-bearing shaft and rod connections in heavy machinery. These parts weigh between 10 and 50 kilograms and are manufactured using closed-die forging from carbon steel grade 45 (AISI 1045) or alloy steel 4140, ensuring high tensile strength and fatigue resistance. The forging process eliminates internal voids and aligns grain structure, resulting in superior mechanical integrity compared to cast or welded alternatives.
The material specification aligns with standard industrial requirements for high-strength mechanical components. Grade 45 carbon steel offers a balance of hardness and machinability, while 4140 alloy steel provides enhanced toughness and hardenability under stress. Surface finish is typically left as-forged unless otherwise specified, with no plating or coating applied unless requested. Dimensional tolerances follow standard forging allowances of ±0.5% for major diameters, with critical interfaces machined to tighter tolerances upon order.
These sleeves are primarily purchased by manufacturers of construction equipment, agricultural machinery, and industrial drive systems requiring reliable, non-failing connections under dynamic loads. Buyers typically source them in batches of 50 to 500 units per order, with packaging in wooden crates or steel pallets to prevent surface damage during transit. Lead times are generally 30 to 45 days after deposit, and delivery terms are commonly FOB Xiamen or CIF destination port, subject to confirmation with the supplier.
| Material | Carbon steel grade 45 (AISI 1045) or alloy steel 4140 |
| Weight range | 10 kg to 50 kg per unit |
| Manufacturing process | Closed-die forging |
| Typical surface condition | As-forged, no coating unless specified |
| Typical dimensional tolerance | ±0.5% for major diameters, ±0.2mm for machined features |
| Typical hardness range | 170-220 HB for grade 45, 200-250 HB for 4140 after quenching and tempering |
| Typical tensile strength | 570-700 MPa for grade 45, 650-850 MPa for 4140 |
| Typical impact energy | 27-40 J at room temperature for grade 45, 35-50 J for 4140 |
| Typical packaging | Wooden crates or steel pallets, with rust preventive oil coating |
| Typical inspection standard | Visual inspection per ISO 13919-1, magnetic particle testing for critical applications |
Quanzhou Weforging Machinery Manufacturing Co., Ltd operates from Pingkeng Industrial Zone in Jinjiang City, Fujian Province, China. The company specializes in precision die-forged mechanical components, with a focus on connection sleeves and similar load-bearing parts. Their listing confirms capability in closed-die forging and material handling for carbon and alloy steels, but provides no details on workforce size, annual output, or client list. Response metrics show no recorded activity, indicating limited online engagement.
The supplier does not claim certifications such as ISO 9001, nor does it list any export history or production capacity figures. Buyers should treat this as a manufacturer with confirmed forging capability based on product description and location, but without verified quality systems or traceability documentation unless requested directly. Sourcing decisions must be based on sample evaluation and third-party inspection.
Connection sleeves are precision die-forged mechanical components weighing 10 to 50 kg, designed for reliable shaft, rod, or pipe connections in heavy machinery, construction equipment, and industrial assemblies. Manufactured from high-strength carbon or alloy steel using closed-die forging, these sleeves offer superior mechanical properties compared to cast or fabricated alternatives. They are widely sourced by importers and equipment manufacturers seeking durable, load-bearing connection components with consistent quality and traceability for global supply chains.
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Sourcing Connection Sleeve from Quanzhou Weforging Machinery Manufacturing Co., Ltd - China Import Guide
Before placing an order, verify the material grade by requesting a mill test report for each heat lot. Confirm whether the sleeves are made from 45 carbon steel or 4140 alloy steel, as mechanical properties differ significantly. Insist on dimensional drawings with tolerances, especially for bore and outer diameter, and request a sample for fit and finish evaluation before bulk shipment.
Confirm lead time with the supplier, as production cycles depend on current order volume. Typical delivery is 30 to 45 days after deposit. Clarify Incoterms - FOB Xiamen is common, but CIF or DAP may be available. Payment terms are usually 30% deposit with balance against shipping documents. Ensure packaging is robust enough to prevent surface damage during long-haul transport.
For quality assurance, arrange a third-party inspection at the factory prior to shipment. Focus on surface integrity, dimensional accuracy, and hardness verification. Request magnetic particle inspection reports for critical applications. Ensure all documentation includes batch numbers, material certifications, and packing lists matching the order. Retain samples for future reference in case of field failures.
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30 suppliersBuy Connection Sleeve in Bulk — Verified Supplier in China
When sourcing Connection Sleeve for your business, securing the right balance of quality and cost is essential. Quanzhou Weforging Machinery Manufacturing Co., Ltd, a verified supplier based in China, offers this product with key specifications including Carbon Steel (A105, 1045) / Alloy Steel (4140, 4340), C: 0.18-0.56%, Mn: 0.4-1.0%, Si: 0.15-0.35%, trace elements per grade spec, and Individual weight 10-50kg; OD 50-300mm, Length 80-500mm (custom sizes available). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $2/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 7307.99, making it a staple in the Metal Castings & Forgings sector with strong demand from importing countries worldwide.
Connection Sleeve Specifications, Trade Terms & Pricing
Importing Connection Sleeve requires careful attention to shipping logistics, customs compliance, and secure payment terms. Quanzhou Weforging Machinery 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 7307.99 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 Quanzhou Weforging Machinery Manufacturing Co., Ltd — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Connection Sleeve 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 Metal Castings & Forgings category and connect with top-tier exporters on our comprehensive B2B marketplace. Start your sourcing journey today.
Import Connection Sleeve — Shipping, Logistics & Customs
Importing Connection Sleeve 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 7307.99 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 Connection Sleeve
What is the wholesale price of Connection Sleeve?
The current listed wholesale price for Connection Sleeve from Quanzhou Weforging Machinery Manufacturing Co., Ltd is $2/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 Quanzhou Weforging Machinery Manufacturing Co., Ltd through EximNext.
What is the Minimum Order Quantity (MOQ) for Connection Sleeve?
The supplier, Quanzhou Weforging Machinery Manufacturing Co., Ltd, has set a Minimum Order Quantity (MOQ) of 1 Bags for Connection Sleeve. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Connection Sleeve?
For international shipping and customs clearance, Connection Sleeve is classified under HS Code 7307.99. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Connection Sleeve from China?
To import Connection Sleeve from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Quanzhou Weforging Machinery Manufacturing Co., Ltd. Ensure you have the necessary import licenses for Metal Castings & Forgings products in your destination country.
Is Quanzhou Weforging Machinery Manufacturing Co., Ltd a verified supplier?
Yes, Quanzhou Weforging Machinery Manufacturing 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 Connection Sleeve?
The key specifications for Connection Sleeve supplied by Quanzhou Weforging Machinery Manufacturing Co., Ltd include Carbon Steel (A105, 1045) / Alloy Steel (4140, 4340), C: 0.18-0.56%, Mn: 0.4-1.0%, Si: 0.15-0.35%, trace elements per grade spec, and Individual weight 10-50kg; OD 50-300mm, Length 80-500mm (custom sizes available). 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 Connection Sleeve?
Quanzhou Weforging Machinery Manufacturing Co., Ltd offers Connection Sleeve with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Connection Sleeve the most?
Connection Sleeve is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Quanzhou Weforging Machinery Manufacturing Co., Ltd through our platform.
What certifications does this Connection Sleeve supplier hold?
Quanzhou Weforging Machinery Manufacturing Co., Ltd maintains international quality certifications. These ensure that the Connection Sleeve meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Connection Sleeve on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Quanzhou Weforging Machinery 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 Quanzhou Weforging Machinery Manufacturing Co., Ltd.
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