Hebei Haoyuan Machinery Manufacturing Co., Ltd.Located in the Innovation Industrial Park of Wangshu Town, Yanshan County, adjacent to the Jinghu (Beijing-Hong Kong-Macau) Expressway, the Jingshen (Beijing-Shenzhen) Expressway, and National Highway 205, transportation is convenient. Our company is a major production and processing enterprise specializing in steel bar coupling sleeves and剥肋滚丝机 (rib removal and rolling machines), equipped with advanced production equipment, laboratories, and testing machines. We have a strong technical team and well-rounded processes and testing methods.
Primarily produces steel sleeve couplings, steel connection sleeves, straight thread sleeves, sleeves:
1. Crafted from international 45# steel with special manufacturing techniques, offering high dimensional accuracy and reliable quality.
2. Connectable to ribbed reinforcing bars with a diameter of Ф14-Ф40mm, in grades HRB335, HRB400, and HRB500.
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 thread, and reducing types, with over a hundred varieties to meet the requirements for connecting rebars of the same and different diameters, adjustable lengths, and directions in horizontal, vertical, and diagonal sections of building structures.
Our company has 21 technical staff and 93 general employees, forming a large-scale, specialized production line with substantial production capacity and completing many major national engineering projects. We regard our customers as gods and quality as life, and have been awarded the "Qualified Unit for Quality Management" by the National Industrial Department. We offer a complete range of sleeve specifications, excellent quality, and guarantee the sleeves have no oversized or undersized parts. Our management system strictly adheres to the ISO9001 standard, ensuring that substandard products do not enter 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. Our products are widely popular 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 business philosophy of "Quality is the lifeblood of the company, customers are our gods." The company has further increased its investment to enhance its equipment level, boost market competitiveness, and meticulously tracks products from research and development, design, production, to sales. With excellent service and affordable prices, we provide reliable products that meet our customers' needs.

Rebar couplings are divided into: straight thread couplings, variable diameter couplings, left and right thread couplings, Grade 4 steel couplings, upsetting couplings, welding couplings, cold extrusion couplings, threaded steel couplings, etc. Rebar couplings are also known as straight thread rebar connectors or rebar splices. 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 engravings on the external diameter and length. The internal threads are right-hand threads.

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