Wuxi Zhongxin Special Steel Co.，Ltd
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No more than two joints are allowed in the same disc (reel), but butt welding joints are allowed, one joint is allowed if the length is less than 1.4km, and two joints are allowed if the length is 1.4km or more.The thickness of the joint should not exceed 15 times of the original thickness, the plastic layer of the joint should be restored, the joint should be marked, and the distance between the two joints should not be less than 305m.The tensile strength of the aluminum-plastic composite belt with joint should not be less than 85% of the adjacent aluminum-plastic composite belt without joint.The DC resistance of the 1M long aluminum-plastic composite belt with a connector should not be greater than 110% of the DC resistance of the adjacent 1m long aluminum-plastic composite belt without a connector.
Technical Indicator:
| No. | Item | Requirement | |
| 1 | Tensile strength Mpa | ≥300 | |
| 2 | Elongation at break ％ | ≥15 | |
| 3 | Stripping strength between steel tape and coating N/cm | ≥6.13 | |
| 4 | Shear strength of thermal zone for EGE | EGE broken or cohere destroyed between film and tape, but no shearing destroyed in thermal zones | |
| 5 | Thermal sealing strength N/cm | ≥17.5 | |
| 6 | Water proof(68 ±1℃,168h)N/cm | ≥6.13 | |
| 7 | The filling compound resistance(68±1℃,168h) | No delamination between steel tape with plastic film | |
| 8 | Corrosion resistance(0.1mol/1,NaOH,480h) | ≥7级 | |
| 9 | Dielectric strength | Single face EGE,1kVd.c.1min | Not breakdown |
| Double face EGE,2kVd.c.1min | Not breakdown | ||
