Hebei Haoyuan Machinery Manufacturing Co., Ltd.Situated in the Jinxin Industrial Park, Wangshu Town, Yanshan County, with convenient access to the Jinghu (Beijing-Hong Kong-Macau) Expressway, Jingshen (Beijing-Shenzhen) Expressway, and National Highway 205. Our company is a major production and processing enterprise specializing in steel bar coupling sleeves and deburring thread rolling machines. We boast advanced production equipment, laboratories, and testing machines, with strong technical capabilities and comprehensive production processes and testing methods.
Primarily produces steel sleeve, steel connection sleeve, straight thread sleeve, sleeve:
1. Made from international 45# steel, with special manufacturing techniques, high dimensional accuracy, and reliable quality.
2. Compatible with ribbed rebar of HRB335, HRB400, and HRB500 grades with diameters from Ф14 to Ф40 mm.
3. Inspected and certified by the National Construction Engineering Quality Supervision and Inspection Center, meeting the I-grade joint standard as per JGJ107-2010.
4. Our three main series include standard, male and female threaded, and reducing types, with over a hundred varieties to meet the connection needs of reinforcing bars for horizontal, vertical, and diagonal sections in building structures, as well as varying lengths and directions.
Our company boasts 21 technical personnel and 93 general staff, forming a production line with a professional scale and substantial production capacity, and has completed many major national engineering projects. We hold our customers as our God and quality as our life, and have been awarded the title of "Unit Reaching Quality Management Standards" by the National Industry Department. We offer a complete range of sleeve specifications, superior quality, and guarantee the sleeves have no oversized or undersized parts. Our management system strictly adheres to the ISO9001 standard, ensuring substandard products are not introduced 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 from superior 45# steel, ensuring high-quality standards. They are widely畅销 and highly praised by customers. The company adheres to the principle of "technology as a guide, people-oriented, quality first, and诚信 business." 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 widely used in industries such as electronics, electricity, 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, steel connection sleeves, straight thread sleeves, and sleeves. Our products have been exported to the Middle East, Southeast Asia, and other regions multiple times.
Hebei Haoyuan Machinery Manufacturing Co., Ltd. adheres to the principle that "product quality is the lifeblood of the company, and serving customers is the deity of the company." The company continues to increase its investment, further enhancing its equipment level and competitiveness in the market. Our products are tracked throughout the entire process of research, design, production, and sales. We provide customers with reliable products through excellent service and low prices.

Rebar sleeves are categorized into: straight thread sleeves, reducing sleeves, left and right thread sleeves, Grade 4 steel sleeves, upsetting sleeves, welding sleeves, cold extrusion sleeves, threaded rebar sleeves, etc. Rebar sleeves are also known as straight thread rebar connectors or rebar couplers. The specifications of straight thread rebar sleeves are φ12, φ14, φ16, φ18, φ20, φ22, φ25, φ28, φ32, φ36, φ40. Common specifications include φ16-φ32 straight thread sleeves, Grade 4 steel sleeves, and upsetting sleeves, which are distinguished by steel stamps on the outer diameter and length. The inner threads are right-hand threads.

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