Hebei Haoyuan Machinery Manufacturing Co., Ltd.Located in the New Innovation Industrial Park, Wangshu Town, Yanshan County, adjacent to the Jinghu (Beijing-Shanghai) Expressway, Jingshen (Beijing-Shantou) Expressway, and National Highway 205, transportation is convenient. Our company is a major production and processing enterprise specializing in steel bar coupling sleeves and deburring and thread rolling machines. We possess advanced production equipment, laboratories, and testing machines, boasting strong technical capabilities and完善的 production processes and testing methods.
Mainly produces steel bar sleeves, steel bar connection sleeves, straight thread sleeves, sleeves:
1. Made from international 45# steel with special manufacturing processes, offering high dimensional accuracy and reliable quality.
2. Connectable to ribbed rebars of HRB335, HRB400, and HRB500 grades with diameters ranging from Ф14 to Ф40mm.
3. Tested and certified by the National Construction Engineering Quality Supervision and Inspection Center, meeting the I-grade joint standard of JGJ107-2010.
4. Featuring three main series – Standard, Male/Female Threaded, and Reducer types, with over a hundred varieties, we can meet the needs for connecting rebars with the same or different diameters and adjustable lengths and orientations for horizontal, vertical, and diagonal parts in building structures.
Our company boasts 21 technical personnel and 93 regular employees, forming a large-scale, specialized production line and completing numerous major national engineering projects. We regard our customers as gods and quality as life, and have been awarded the "Quality Management Standard Unit" by the National Industrial Department. Our sleeve specifications are complete, with excellent quality and guaranteed to have no oversized or undersized sleeves. Our management system strictly adheres to the ISO9001 standard, ensuring that non-compliant products are not allowed into the market to affect our company's reputation.
Our factory, through arduous entrepreneurship and production practice, has accumulated rich experience. Our products feature attractive appearance, high tensile strength, and stable mechanical properties. All products are made with superior 45# steel, ensuring high standards of quality. They are widely sold and highly praised by customers. The company adheres to the principle of "technology leadership, people-oriented, quality first, and诚信 operation". We practice scientific management and meticulous manufacturing. Welcome both new and old friends to visit and discuss business opportunities for joint development. Our products are extensively used in industries such as electronics, power, nuclear power, petrochemicals, metallurgy, instruments, aerospace, aviation, shipping, docks, construction, food, transportation, and heating pipelines. We offer various types of high-quality steel sleeve couplings, rebar coupling sleeves, straight thread sleeves, and sleeves. Our products have been exported to the Middle East, Southeast Asia, and other regions.
Hebei Haoyuan Machinery Manufacturing Co., Ltd. adheres to the philosophy that "product quality is the lifeblood of the company, and serving customers is the deity of the company." The company continues to increase investment to further enhance its equipment level, boost market competitiveness, and ensures the entire process from research and development, design, production, to sales is tracked meticulously. With excellent service and affordable prices, we provide reliable products that meet our customers' needs.

Rebar couplings include: straight thread couplings, reducing couplings, left and right thread couplings, grade 4 steel couplings, upsetting couplings, welded couplings, cold extrusion couplings, threaded steel couplings, etc. Rebar couplings are also known as straight thread rebar connectors or rebar adapters. Specifications for straight thread rebar couplings: φ12, φ14, φ16, φ18, φ20, φ22, φ25, φ28, φ32, φ36, φ40. Common specifications are φ16-φ32 straight thread couplings, grade 4 steel couplings, and upsetting couplings, which are distinguished by steel stamps on the outer surface. The outer diameter and length vary, with the internal threads being right-hand threads.

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