Main Technical Parameters Of Bolt Type Tension Clamp And Joint Pipe

Carefully check the quality of bolted type strain clamp and the connecting pipe before crimping. The external dimensions and deviations of various pipes before crimping should comply with the following regulations:
Allowable deviation of crimped pipe dimensions before crimping
(Unit: mm)
Requirements
Outer diameter D
Diameter d
Category
Basic size
Limit deviation
Basic size
Limit deviation
D≤14
±0.2
d≤9
±0.15
Steel pipe
14＜D≤22
－0.2~＋0.3
/
/
22＜D≤34
－0.2~＋0.4
9＜d≤16
±0.2
D≤32
±0.4
d≤22
-0.3
Aluminum pipe
32＜D≤50
0.6
22＜d≤36
-0.4
50＜D≤80
1
36＜d≤55
-0.5
Requirements
Outer diameter D
Diameter d
3. Measurement method (using vernier caliper): dead end strain clamp straight pipe outer diameter is tested at 3 cross-section points, bolted dead end clamp diameter is tested at 2 cross-section points at both ends, and each cross-section point is tested at 90° to each other for 2 values. Therefore, the average value of 6 values ​​is taken for the outer diameter, and the average value of 4 values ​​is taken for the diameter. For the outer diameter of the resistant pipe, 2 cross-section points are tested, and the diameter is tested at 1 cross-section point at one end, and the average value is also used for judgment. Make a record and judge whether it is qualified.
4. Before crimping the conductor and ground wire, the crimping personnel should be familiar with the maximum output value of the hydraulic press used in this project in advance. When crimping, the relevant provisions of the hydraulic press operating instructions should be followed to avoid damaging the crimping machine.