Import Api Class Sm Sucker Rod Couplings — Buy in Bulk from Supplier in China
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API Class SM sucker rod couplings
These API Class SM sucker rod couplings are manufactured from seamless alloy steel 40Cr (AISI 5140) and conform to API Spec 11B. They are available in full size and slim hole variants, with nominal sizes ranging from 5/8" to 1-1/8". The couplings feature a smoothness rating of 3.1×10⁻³, with a coating thickness between 0.01in and 0.02in for enhanced durability in harsh downhole environments.
The material undergoes heat treatment to achieve a basic hardness of HRC 16-23, while the surface hardness reaches HRA 58-62 for superior wear resistance. Tensile tests confirm an integrate intension of 484 MPa, and the hole rate is guaranteed for 180 days under standard operating conditions. These couplings are designed to handle high cyclic loads typical in sucker rod pumping systems.
Common applications include onshore and offshore oil extraction, where reliable connections between sucker rods are critical to prevent failures. Buyers typically source these couplings in bulk for new well installations or replacement in existing setups. Trade terms such as MOQ, Incoterms, and packaging should be confirmed directly with Yantai Yunsheng Petroleum Machine Accessories Co., Ltd, as these details vary by order.
| Material | Seamless Alloy Steel 40Cr (AISI 5140) |
| Standard | API Spec 11B |
| Nominal Sizes | 5/8", 3/4", 7/8", 1", 1-1/8" |
| Type | Full size and Slim Hole |
| Smoothness | 3.1×10⁻³ |
| Coating Thickness | 0.01in - 0.02in |
| Basic Hardness | HRC 16-23 |
| Surface Hardness | HRA 58-62 |
| Integrate Intension | 484 MPa |
| Hole Rate Guarantee | 180 days |
| Typical Application Temperature Range | standard -20°C to 120°C |
| Typical Corrosion Resistance | standard for API 11B compliant couplings |
Yantai Yunsheng Petroleum Machine Accessories Co., Ltd is based in Shengquan Industrial Park, Yantai, Shandong Province, China. The company specializes in oilfield equipment and accessories, with a focus on API-compliant components for upstream oil and gas operations. Its location in a major industrial hub provides logistical advantages for exporting to international markets.
The supplier is categorized under the imported tier with a harbor trust tier, indicating a verified presence in the market. While the response rate and average response hours are currently listed as zero, the company’s profile reflects a commitment to producing standardized, high-reliability products for demanding applications. Buyers are advised to verify current communication channels and production capabilities 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 | <4h |
| Response Rate | New Supplier |
Sourcing API Class SM sucker rod couplings from Yantai Yunsheng Petroleum Machine Accessories Co., Ltd - China Import Guide
Before placing an order, verify the supplier’s ability to provide mill test certificates and third-party inspection reports for the API Class SM couplings. These documents confirm compliance with API Spec 11B and ensure the material and dimensional specifications meet industry standards. Request samples for physical verification of hardness, coating thickness, and smoothness.
Confirm the Incoterms, such as FOB or CIF, and the preferred port of loading in China, typically Qingdao or Shanghai for Shandong-based suppliers. Lead times can vary based on production schedules and customization requirements, so agree on a realistic timeline. Packaging should be inspected for suitability for ocean freight, with wooden crates or pallets commonly used for protection.
Quality checks should include visual inspection for surface defects, measurement of coating thickness using a micrometer, and hardness testing with a portable tester. Request a material traceability report to ensure the steel grade matches the specified 40Cr (AISI 5140). For slim hole variants, verify the outer diameter and thread compatibility with the intended sucker rod assembly.
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30 suppliersBuy & Import Api Class Sm Sucker Rod C — Wholesale Supply from China
Securing a reliable supply chain for Api Class Sm Sucker Rod Couplings is critical for maintaining your business operations. Yantai Yunsheng Petroleum Machine Accessories Co., Ltd, a verified supplier located in China, provides high-quality Api Class Sm Sucker Rod C 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 Oil Field Machinery & Equipments 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 Api Class Sm Sucker Rod C from China, buyers can discuss shipping logistics, packaging requirements, and preferred payment terms directly with Yantai Yunsheng Petroleum Machine Accessories Co., Ltd. This seamless communication is powered by EximNext, a premier B2B marketplace that connects ambitious buyers with verified global sellers across every major industry.
About Yantai Yunsheng Petroleum Machine Accessories Co., Ltd — Verified Supplier in China
We understand that verifying supplier credentials is a top priority for importers. Yantai Yunsheng Petroleum Machine Accessories Co., Ltd is part of our extensive network of vetted international exporters. Browse more products in the Oil Field Machinery & Equipments category or discover new suppliers across the Oil Field Machinery & Equipments 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 Api Class Sm Sucker Rod C
When importing Api Class Sm Sucker Rod C 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 Api Class Sm Sucker Rod C
How can I get the wholesale price for Api Class Sm Sucker Rod Couplings?
Click the "Request Quotation" button to contact Yantai Yunsheng Petroleum Machine Accessories Co., Ltd directly. The supplier will provide a custom quote based on your required bulk quantity and shipping destination.
Can I buy Api Class Sm Sucker Rod C in bulk from China?
Yes, Yantai Yunsheng Petroleum Machine Accessories Co., Ltd provides Api Class Sm Sucker Rod C 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 Yantai Yunsheng Petroleum Machine Accessories Co., Ltd. Contact the supplier to discuss the best logistics options for importing Api Class Sm Sucker Rod C to your country.
How do I request a sample of Api Class Sm Sucker Rod Couplings?
Send a direct message to Yantai Yunsheng Petroleum Machine Accessories 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?
Yantai Yunsheng Petroleum Machine Accessories Co., Ltd is a registered and verified supplier on EximNext. We recommend using our secure messaging system and standard international payment methods (L/C, T/T, Escrow).
What specifications should I ask for when importing Api Class Sm Sucker Rod C?
Request a detailed product data sheet including grade, purity, dimensions, material composition, and applicable industry standards from Yantai Yunsheng Petroleum Machine Accessories Co., Ltd.
Does Yantai Yunsheng Petroleum Machine Accessories Co., Ltd offer custom packaging or private labeling?
Many suppliers on EximNext, including Yantai Yunsheng Petroleum Machine Accessories 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.
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Yes, EximNext hosts a wide network of verified Oil Field Machinery & Equipments manufacturers, exporters, and wholesalers across 200+ countries.
How do I contact Yantai Yunsheng Petroleum Machine Accessories 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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