covering limited expansion joint advantages: 1.easy to installation and maintanance 2.anticorrossion and excellent seal service 3.novel structure and high yeild 4.packaging 5.tensile technical parameter NO. Name Qty Material 1 body 1 QT400/Q235A/ZG230 2 gasket 1 NBR 3 follower 1 QT400/Q235A/ZG230 4 limited short pipe 1 Q234A/20/16Mn 5 bolt n Q235A/1Cr8Ni9Ti 6 nut 5n Q235A/1Cr8Ni9Ti