Import Api 7/8"Class Sm Slim Holesucker Rod Coupling — Buy in Bulk from Supplier in China

The API 7/8" class SM slim holesucker rod coupling is engineered for slim hole drilling operations in oil and gas extraction. It features a 7/8" nominal size, precision-machined to API 7 standards for compatibility with slim hole sucker rod strings. The coupling is manufactured from seamless alloy steel, providing the tensile strength and fatigue resistance required for continuous downhole service under high torque and cyclic loads.

This component is designed for environments where space and weight constraints demand compact, high-strength connections. Seamless alloy steel construction is standard for such couplings, offering uniform grain structure and enhanced resistance to hydrogen sulfide and carbon dioxide corrosion typical in oilfield applications. The SM classification indicates its suitability for slim hole configurations, where outer diameter and wall thickness are optimized for restricted boreholes without sacrificing load capacity.

Primary buyers include drilling contractors, oilfield service companies and equipment OEMs assembling sucker rod strings for onshore and offshore wells. The coupling is typically supplied in bulk quantities with thread protectors to prevent damage during transit. For slim hole applications, confirm the thread type (e.g. API modified or proprietary) and torque specifications, as these directly impact connection integrity and service life.

Yantai Yunsheng Petroleum Machine Accessories Co., Ltd is based in Shengquan Industrial Park, Yantai, Shandong Province, China. The company specializes in manufacturing oilfield equipment components, including sucker rod couplings, drill pipes and related accessories for the petroleum industry. Its facility is located at Dongxing Road in the 264003 postal area, positioning it within a key industrial hub for oil and gas machinery production.

The supplier operates as an imported tier provider with a harbor trust classification, indicating a verified presence in the supply chain for international trade. While the response rate is currently recorded at 0.00, the company’s focus remains on delivering components that meet API standards for global oilfield operations. All inquiries for specifications, certifications or technical documentation should be directed to the supplier for confirmation.