[ 16紧迫圈(内16x外21x厚3) ]

[ 22紧迫圈(内22x外27x厚4) ]

[ 28泵紧迫圈(内28x外34x厚4) ]

[ 30紧迫圈(内30x外37x厚4) ]

[ 80泵紧迫圈(内34x外40x厚4) ]

[ 120泵紧迫圈(内38x外41.5x厚5) ]

[ 150泵紧迫圈(内45x外52x厚4) ]