| Introduction of the polyurethane pig cup | |
Polyurethane material is a kind of polymer material, it is a new kind of organic high polymer material with good elasticity. High resistance to wear, Saturated steam down,Low temperature and good flexibility, it can guarantee the pig to run distance reach 200km In the process of pigging.
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According to the function during the pigging we classify pig as Guide Cup and Sealing Cup. | |
Sealing Cup: In the process of the pig running, it can seal pipe effectively and then make pressure differential of before and after pig. The differential pressure push it forward and Clean up the impurity and others function etc.
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Guide Cup: In the process of the pig running, it can guide the cleaning pigs advance, Support the pigging weigh to prevent the eccentric wear, Clean up the impurity and others function etc. | |
The outside diameter of guide cups and seating cups, generally is the maximal diameter of 1.03 ~ 1.05 times. |
| No. | Factory inspection main indicators | Unit |
Guide Cup | Seal Cup | Test method |
| 1 | Hardness(SHORE A) | Shao A | 85 | 80 | GB531-92 |
| 2 | Tensile strength | MPa | 50 | 40 | GB528-82 |
| 3 | Elongation at break | % | 600 | 700 | GB528-82 |
| 4 | Tensile set | % | 12 | 12 | GB528-82 |
| 5 | Tear strength | KN/m | 90 | 75 | GB530-81 |
| 6 | Impact resilience | % | 35 | 55 | GB1681-91 |
| 7 | Akron abrasion | Cm3/1.61Km | 0.01 | 0.01 | GB1698-82 |