bellows expansion joints
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1.certification: ISO9001:2000;
several kinds of bellows expansion joints:
1. QYP compensator;
2. straight pipe pressure-balancing compensator;
3. formula compensator;
4. nonmetal fabric compensator;
5. rectangle compensator;
6. horizontal compensator of big pull rod;
7. pressure balancing type compensator of return bend;
8. hinge type compensator