Hebei Haoyuan Machinery Manufacturing Co., Ltd.Located in the Innovation Industrial Park of Wangshu Town, Yanshan County, near the Jinghuang and Jingshen Expressways and National Highway 205, transportation is convenient. Our company is a major production and processing enterprise specializing in steel bar couplings and stripping and rolling thread machines, with advanced production equipment, laboratories, and testing machines. We have strong technical capabilities and完善的production processes and testing methods.
Mainly produces steel bar sleeves, steel bar 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 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, 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 staff and 93 general employees, forming a large-scale, specialized production line and completing numerous major national projects. We hold our customers in high regard, considering quality as our lifeblood, 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. Our products feature attractive appearance, high tensile strength, and stable mechanical properties. All products are made with superior 45# steel, ensuring high-quality standards. They are widely畅销and have received unanimous praise from customers. The company adheres to the宗旨 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 extensively used in industries such as electronics, electricity, 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 coupling sleeve, straight thread sleeve, and sleeve products. 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 that "product quality is the lifeblood of the company and serving customers is the company's god." The company has further increased its investment to enhance its equipment level, boost market competitiveness, and provide customers with reliable products throughout the entire process of research and development, design, production, and sales, offering excellent service and affordable prices.

Rebar sleeves are divided into: straight thread sleeves, reducing sleeves, left and right hand thread sleeves, Grade 4 steel sleeves, upsetting sleeves, welding sleeves, cold extrusion sleeves, threaded bar sleeves, etc. Rebar sleeves are also known as straight thread connection rebar tubes and rebar connectors. The specifications of straight thread rebar sleeves are φ12, φ14, φ16, φ18, φ20, φ22, φ25, φ28, φ32, φ36, φ40. Common specifications are φ16-φ32 straight thread sleeves, Grade 4 steel sleeves, and upsetting sleeves, 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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