Hebei Haoyuan Machinery Manufacturing Co., Ltd.Located in the Innovation Industrial Park of Wangshu Town, Yanshan County, adjacent to the Beijing-Hong Kong-Macau Expressway, Beijing-Shantou Expressway, and National Highway 205, transportation is convenient. Our company is a large-scale production and processing enterprise specializing in the production of steel bar coupling sleeves and剥肋滚丝机 (de-coating and rolling thread machines), equipped with advanced production equipment, laboratories, and testing machines. We have a strong technical team and完善的工艺及检测手段 (perfect process and testing methods).
Main products include rebar sleeves, rebar connecting sleeves, straight thread sleeves, and sleeves.
1. Utilizing international 45# steel, with a special manufacturing process, 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. Inspected 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 types, and reducing types, offering over a hundred varieties. These can meet the connection needs of rebars for horizontal, vertical, and diagonal sections in building structures, with both the same and different diameters, adjustable lengths, and directions.
Our company boasts 21 technical staff and 93 regular employees, forming a large-scale, specialized production line and completing numerous major national projects. We treat our customers as gods and quality as life, and have been awarded the "Quality Management Standard Unit" by the National Industrial Department. Our sleeves come in a complete range of specifications, with excellent quality and guaranteed to be free of oversized or undersized heads. 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 practice, has accumulated rich experience. Our products feature attractive appearance, high tensile strength, and stable mechanical properties. All are made from superior 45# steel, ensuring high-quality standards. Our products are widely畅销 and have received unanimous praise from 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 new and old friends to visit and discuss business, striving for common development. 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, providing various types of high-quality steel sleeve, steel connector sleeve, straight thread sleeve, and sleeve. 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 customer satisfaction is our god." We further increase our investment to enhance our equipment level and competitiveness in the market. We track the entire process from research and development, design, production, to sales, providing reliable products with excellent service and low prices for our clients.

Rebar couplings are divided into: straight thread couplings, tapered couplings, male and female thread couplings, Grade 4 steel couplings, upsetting couplings, welded couplings, cold extrusion couplings, threaded rebar couplings, etc. Rebar couplings are also known as straight thread rebar connectors or rebar adapters. The specifications of straight thread rebar couplings are φ12, φ14, φ16, φ18, φ20, φ22, φ25, φ28, φ32, φ36, φ40. The commonly used specifications are φ16-φ32 straight thread couplings, Grade 4 steel couplings, and upsetting couplings, which are distinguished by external steel stamps. The outer diameter and length vary, with the internal threads being male threads.

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