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The API SM coupling with great bevel edge from Yantai Pertoleum Machine Fittings Co., Ltd. is a critical component for oil, gas, and petrochemical pipeline systems. It meets API Class SM standards, designed to ensure leak-proof connections under high-pressure and high-temperature conditions. The bevel edge design enhances alignment during installation, reducing the risk of misalignment and improving seal integrity. Available diameters include 5/8", 3/4", 7/8", 1", and 1-1/8", catering to a range of pipeline sizes.
Constructed from industrial-grade carbon or stainless steel, these couplings are built to withstand harsh environments, with typical yield strengths of 35,000-70,000 psi for carbon steel variants. Standard API SM couplings use a threaded or socket-weld connection, with the bevel edge ensuring a smooth transition for fluid flow and minimizing turbulence. The typical weight for these couplings ranges from 0.4 to 2.0 lbs, depending on the diameter and material, with the supplier’s listed range starting at 0.41 lbs.
These couplings are essential for pipeline construction, repair, and maintenance in industries such as oil and gas extraction, refining, and petrochemical processing. Buyers should confirm the exact material grade, as API SM standards allow for various steel compositions to match specific pressure and temperature ratings. The couplings are typically supplied with mill test certificates and compliance documentation for API standards, with FOB or CIF Incoterms available for international shipments.
| Standard Compliance | API Class SM |
| Available Diameters | 5/8", 3/4", 7/8", 1", 1-1/8" |
| Weight Range | 0.41 lbs minimum (supplier data), typical 0.4-2.0 lbs |
| Material | Carbon steel or stainless steel (typical for API SM) |
| Yield Strength | 35,000-70,000 psi (typical for carbon steel) |
| Connection Type | Threaded or socket-weld (standard for API SM) |
| Pressure Rating | Up to 15,000 psi (typical for API SM couplings) |
| Temperature Range | -20°C to 200°C (typical for carbon steel) |
| Surface Finish | Zinc plating or black oxide (standard for corrosion resistance) |
| Bevel Edge Angle | 37° or 45° (typical for API couplings) |
Yantai Pertoleum Machine Fittings Co., Ltd. is a China-based manufacturer and supplier specializing in pipeline components for the oil, gas, and petrochemical industries. The company is located in Shengquan Industrial Park, Laishan District, Yantai, Shandong, a region known for its industrial manufacturing capabilities. As an imported-tier supplier, it focuses on exporting products to international markets, particularly for demanding applications.
The supplier’s trust tier is classified as harbor, indicating a baseline level of verification. With a response rate of 0.00 and no recorded average response hours, buyers may experience delays in communication. The company’s product portfolio includes API-compliant fittings, couplings, and other pipeline accessories, with the API SM coupling representing its high-pressure connection solutions. Buyers should request updated contact details to expedite inquiries.
| 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 |
Before ordering API SM couplings from Yantai Pertoleum Machine Fittings Co., Ltd., verify the material grade and its compliance with your system’s pressure and temperature requirements. Request third-party inspection reports or mill test certificates to confirm the mechanical properties, such as yield strength and hardness, meet API SM standards. Additionally, check whether the couplings require additional heat treatment or testing for sour service applications.
Logistics for these couplings typically involve sea freight from China, with FOB Yantai or CIF destination ports as common Incoterms. Confirm packaging specifications to prevent damage during transit, as threaded or socket-weld couplings may require protective caps or coatings. Payment terms often include T/T with a 30% deposit, with the balance due upon shipment. Clarify lead times, as custom diameters or material grades can extend production by 2-4 weeks.
Quality checks should include dimensional inspection to ensure the bevel edge angle and diameter match the API SM standards. Request a pre-shipment inspection to verify the surface finish, threading accuracy, and material composition. Documentation should include MTCs, API compliance certificates, and a packing list detailing the quantity and specifications of each coupling. For critical applications, consider on-site witness testing or third-party validation.
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