Hebei Haoyuan Machinery Manufacturing Co., Ltd.Located in the Innovation Industrial Park of Wangshu Town, Yanshan County, adjacent to the Jinghuang (Beijing-Shanghai) Expressway, the Jingshen (Beijing-Shantou) Expressway, and National Highway 205, transportation is convenient. Our company is a large-scale production and processing enterprise specializing in the manufacturing of steel bar coupling sleeves and stripping and rolling machines. We possess advanced production equipment, laboratories, and testing machines, with a strong technical team and完善的 production processes and testing methods.
Mainly produces steel bar couplings, steel bar connection couplings, straight thread couplings, and couplings:
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 as per JGJ107-2010.
4. The three main series include standard, male and female thread, 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 has 21 technical staff and 93 general employees, forming a large-scale, professional production line and completing many major national 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, quality is excellent, and we guarantee that there are no oversized or undersized sleeves. Our management system strictly adheres to the ISO9001 standard, ensuring that substandard products do not enter the market and tarnish our company's reputation.
Our factory, through arduous entrepreneurship and production experience, has accumulated rich expertise. 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 well-sold in various regions and have received unanimous praise from customers. The company adheres to the tenet of "technology as the guide, people-oriented, quality first, and诚信 operation." We engage in scientific management and meticulous manufacturing. Welcome new and old friends to visit and discuss business, and to grow together. Our products are widely used in industries such as electronics, power, nuclear power, petrochemicals, metallurgy, instruments, aerospace, aviation, shipping, docks, construction, food, transportation, and heating pipelines. We offer a variety of high-quality steel sleeve, steel connection sleeve, straight thread sleeve, and sleeve products. Our products have been exported to the Middle East, Southeast Asia, and other regions.
Hebei Haoyuan Machinery Manufacturing Co., Ltd. adheres to the business philosophy of "Quality is the lifeblood of the company, customers are the gods of the company." The company further increases its investment, enhancing its equipment level and competitiveness in the market. Our products are tracked throughout the entire process of research, design, production, and sales. With excellent service and affordable prices, we provide customers with reliable products they need.

Rebar sleeves are categorized into: straight thread sleeves, tapered sleeves, male and female thread sleeves, grade 4 steel sleeves, upsetting sleeves, welding sleeves, cold extrusion sleeves, threaded steel bar sleeves, etc. Rebar sleeves are also known as straight thread rebar couplings or rebar connectors. The specifications of straight thread rebar sleeves are φ12, φ14, φ16, φ18, φ20, φ22, φ25, φ28, φ32, φ36, φ40. The commonly used specifications are φ16-φ32 straight thread sleeves, grade 4 steel sleeves, and upsetting sleeves, which are differentiated by steel stamps for external diameter and length. The internal threads are right-hand threads.

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