Product Overview：
Steel reinforcement connection sleeve steel pipe is used to manufacture steel reinforcement connection sleeves. Generally produced with 45 # steel, it has strong hardness and is widely used for connecting steel bars in buildings. It has the characteristics of high hardness and strength, and is not easily deformed. It can also be used for mechanical processing and support pillars. Features: 1. Suitable for the construction of steel bar connections in reinforced concrete structures of various structures that can withstand bidirectional tensile and compressive forces; 2. Save materials and energy, not limited by the composition and type of steel bars; 3. Can be connected in all directions; 4. Pre production is possible, factory operation is carried out without occupying the construction period, and construction is carried out 24/7; 5. Easy and fast operation, fast construction speed, and can shorten the construction period.
| Product List |
| Product Name: | 45 # steel bar connection sleeve steel pipe | seamless steel pipe |
| Product Name: | Precision steel bar connection sleeve seamless steel pipe |
| Product Name: | Cold rolled annealed steel bar connecting sleeve steel pipe | Seamless pipe |
| Product Name: | National standard steel bar connection sleeve steel pipe | seamless steel pipe |
| Product Name: | Non standard steel bar connection sleeve steel pipe | seamless steel pipe |
| Parameter range |
| Outer diameter | Φ18mm - Φ 85mm (compatible with Φ 12-40mm steel sleeve) |
| Wall thickness | 1.2mm‑18mm |
| Standard length | 1‑12m， Support short cut, fixed length cutting, and chamfering at both ends |
| Outer diameter accuracy | Maximum ± 0.03mm |
| Executive Standards | ASTM A519, EN 10305-1, DIN 2391, JIS G3445, GB/T 3639 |
| Non-standard customization | Special wall thickness, customized inner hole, precision tolerance, heat treatment, cutting and chamfering can all be customized |
| Common specification table |
| Corresponding steel bar diameter (mm) | Φ12 | Φ14 | Φ16 | Φ18 | Φ20 | Φ22 | Φ25 | Φ28 | Φ32 | Φ36 |
| Outer diameter of steel pipe (mm) | 22 | 24 | 27 | 29 | 32 | 35 | 39.5 | 44 | 50.5 | 56.5 |
| Common wall thickness (mm) | 4.0、5.0 | 4.0、5.0 | 4.5、5.0、6.0 | 4.5、5.0、6.0 | 5.0、6.0、7.0 | 5.0、6.0、7.0 | 5.5、6.0、7.0、8.0 | 6.0、7.0、8.0、9.0 | 7.0、8.0、9.0、10 | 8.0、9.0、10、11 |
Optional tolerance range |
| Tolerance control | Optional manufacturing process |
| Tolerance ≤ 0.05 mm | Cold rolling |
| Tolerance ≤ 0.10 mm | Cold rolling |
| Tolerance ≤ 0.30 mm | Cold drawing | Cold rolling |
| Tolerance ≤ 0.50 mm | Cold drawing | Hot rolling |
| Tolerance ≤ 1.00 mm | Hot rolling | Hot expanding |
| Outer diameter tolerance (annealed blank) |
| Outer diameter (mm) | Outer diameter deviation (mm) |
| 4‑30 | ±0.20 |
| 30‑40 | ±0.30 |
| 40‑50 | ±0.40 |
| 50‑65 | ±0.50 |
| Wall thickness tolerance |
| Project | Bias |
| Wall thickness S | ± 10% S, minimum ± 0.10mm |
| Geometric tolerance |
| Project | Indicator |
| Ovalness | ≤ 80% outer diameter tolerance |
| Straightness | ≤1.0 mm/m |
| Universal in the sleeve industry: the tolerance for annealing state is relaxed by about twice |
| If the outer diameter tolerance of the purchased cold hard material (+C) is reduced by half, for example: ≤ 30: ± 0.10mm. |
Optional delivery status
|
| Oil removal from oil pipes | Annealing and straightening | Steel pipe corrosion prevention |
| Steel pipe threading | Length cut-to-length | Steel pipe coating |
| Steel pipe cap | Exquisite bundling | Beveling |
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