The hydraulic pressure testing machine is to verify the pressure endured capability of ductile iron pipe, on which testing hydraulic pressure can be adjusted from 18 to 50 bar steplessly. The certain type of machine can be designed and manufactured for certain kind of ductile iron pipe size, of which kinds of diameter sizes are ranged from DN1000~DN1600 to DN1800~DN2600. And kinds of length sizes are 5m, 6m and 8m.

There are important outstanding features of those hydraulic pressure testing machines, described briefly as bellow:

• proper to test large size and varieties of ductile iron pipes

• Large size end cover designed and adopted in the first in China

• Good sealing performance depending on compensating pressure of free head

• Good durability of sealing ring due to proper material adopted

Series of hydraulic pressure testing machine are proved to be in well working and can meet technique requirements of users through experiences.

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