Tiếng Việt
ភាសាខ្មែរSteel couplers (threaded pipes, coupler joints) are essential for construction work. They connect steel quickly, accurately, and sustainably, helping to save time, reduce costs, and improve construction efficiency.
At Bao Tin Steel, we are proud to be a pioneer in manufacturing steel couplers according to international standards, meeting all strict technical requirements of key projects.
What is a steel coupler? Coupler applications
A coupler threaded pipe, also known as a Quick Coupler, is a mechanical accessory utilized to connect two steel sections. Designed with spiral threads at both ends, the coupler ensures a secure and robust connection for steel bars.
Application of steel coupler:
- Steel joints in civil and industrial construction work such as high-rise buildings, bridges, tunnels, factories, etc.
- Steel joints in prefabricated steel structures.
- Reinforcement of foundations, bored piles, columns, and beams.
- Used in pipeline systems, and mechanical engineering.
Specifications of steel coupler
| Type | Thread pitch (mm) | External diameter – FROM ± 1 (mm) | Length ± 3 (mm) |
Strict Yield R e (Mpa) |
Tensile strength R m (Mpa) |
Elongation A5 (%) |
Hardness– Difficulty (HB) |
Standard Coupler |
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| D16 | 2,5 | 24 | 42 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D18 | 2,5 | 26 | 45 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D20 | 2,5 | 31 | 52 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D22 | 2,5 | 35 | 55 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D25 | 3.0 | 38 | 65 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D28 | 3.0 | 42 | 70 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D32 | 3.0 | 48 | 78 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D36 | 3.0 | 55 | 85 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D40 | 3.0 | 60 | 90 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
Diameter change coupler |
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| D16 / 18 | 2,5 | 26 | 42 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D18 / 20 | 2,5 | 30 | 45 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D20 / 22 | 2,5 | 33 | 52 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D22 / 25 | 2,5 / 3,0 | 38 | 60 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D25 / 28 | 3.0 | 42 | 70 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D28/32 | 3.0 | 48 | 75 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D32 / 36 | 3.0 | 54 | 82 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D36 / 40 | 3.0 | 59 | 90 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D32 / 25 | 3.0 | 48 | 72 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D28 / 22 | 3.0 / 2.5 | 42 | 65 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D22 / 18 | 2,5 | 32 | 50 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
Reversible Coupler |
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| D16 LR | 2,5 | 24 | 60 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D18 LR | 2,5 | 26 | 65 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D20 LR | 2,5 | 31 | 70 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D22 LR | 2,5 | 35 | 75 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D25 LR | 3.0 | 38 | 80 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D28 LR | 3.0 | 42 | 85 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D32 LR | 3.0 | 48 | 90 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D36 LR | 3.0 | 55 | 95 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
| D40 LR | 3.0 | 60 | 100 | ≥ 340 | ≥ 580 | ≥ 11 | ≥ 187 |
The coupler manufacturing process at Bao Tin Steel
Below is the steel coupler manufacturing process at Bao Tin Steel. Each processing step is performed by skilled, experienced workers. The specific steps are as follows:
Coupler types for Bao Tin Steel produced/processed on request
Standard Coupler
Reversible Coupler (2-way threaded pipe connection)
Used when the two ends of the reinforcement bar cannot be rotated, it is necessary to rotate the connecting pipe. Often used in the construction of bored piles, column heads, and foundations.
D16 steel coupler with forward and reverse thread
Threaded pipe with one side large and one side small to connect 2 steel bars with 2 different sizes. This type is often found in high-rise buildings, when constructing high, it is necessary to reduce the cross-section of steel columns.
Advantages of using Steel Coupler of Bao Tin Steel
- Superior quality: The Coupler is manufactured on a modern CNC line, ensuring high precision, good load-bearing capacity and outstanding durability. The product meets international standards and has been strictly quality tested.
- Improve construction efficiency: Coupler helps shorten construction time and reduce labour and costs compared to traditional steel connection methods.
- Increased flexibility: Couplers allow steel to be joined in a variety of positions, even when the length of the steel bar is insufficient, optimizing design and construction.
- Cost savings: Using couplers helps reduce steel loss, thereby saving material costs for the project.
- Processing on request: Bao Tin Steel accepts processing couplers according to requirements on size, type and quantity, meeting the specific needs of each project.
Bao Tin Steel – A reliable partner for every project
With many years of experience in the steel industry, Bao Tin Steel is committed to providing customers with high-quality steel coupler products, meeting all technical requirements and construction progress.
Benefits of choosing steel couplers manufactured at Bao Tin Steel:
- Competitive price: Direct production, no intermediaries, helps reduce costs for customers.
- Quality assurance: Clear origin, strictly controlled production process, meeting international standards.
- Production on demand: Processing couplers according to the specific requirements of each project, ensuring construction progress.
- Professional service: Experienced technical team, dedicated consulting, 24/7 customer support.
>> See more products also directly manufactured by Bao Tin Steel: Steel connectors
- Hotline: 0932 059 176
- Email: kinhdoanh@thepbaotin.com
- Website: thepbaotin.com
Hopefully, the information that Bao Tin Steel shares will help customers find a place to buy and process quality and economical couplers. If you need any support, please contact us immediately!
Tiger Steel is a subsidiary of Bao Tin Steel