Hebei Haoyuan Machinery Manufacturing Co., Ltd.Located in the Innovation Industrial Park of Wangshu Town, Yanshan County, adjacent to the Jinghuang Expressway, Jingshen 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 stripping and rolling machines. We have advanced production equipment, laboratories, and testing machines, with strong technical capabilities and完善的 production processes and testing methods.
Mainly produces steel sleeve, steel connection sleeve, straight thread sleeve, sleeve:
1. Made from international 45# steel, with special manufacturing processes, 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. 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 positions within building structures.
Our company has 21 technical staff and 93 general employees, forming a large-scale, professional production line and completing numerous 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 sleeves come in a complete range of specifications, are of excellent quality, and guarantee 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 practice, has accumulated rich experience, with products featuring aesthetic appearance, high tensile strength, and stable mechanical properties. All products are manufactured using superior 45# steel, ensuring high-quality standards. Our products are widely popular and consistently 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 us, discuss business opportunities, and develop together. 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, connection sleeve, straight thread sleeve, and sleeve. Our products have been exported to regions such as the Middle East and Southeast Asia multiple times.
Hebei Haoyuan Machinery Manufacturing Co., Ltd. adheres to the business philosophy of "Quality is the lifeblood of the company, and customers are our gods." The company has further increased its investment to enhance its equipment level, boost market competitiveness, and ensure the entire process from research and development, design, production, to sales is meticulously tracked. We provide customers with reliable products through excellent service and affordable prices.

Rebar couplings include: 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 connectors. 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 external steel stamps. The outer diameter and length vary, with the internal threads being right-hand threads.

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