High Performance Expansion Bellows

Excellent wear resistance

Germany used test showed that the wear resistance of HDPE or even several times higher than steel pipe.

Appropriate deflection

A certain length of HDPE double-wall corrugated pipe axis can be slightly deflection, not affected by a certain degree of uneven settlement of the ground, do not need spread directly in slightly not straight pipe inside the groove, and so on.

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Be familiar with the design drawings and data, make clear head and branch pipe arrangement, direction, and process and construction installation requirements.

Familiar with the situation, understand the design along the line of the existing distribution of plane and elevation control points.

According to the pipeline plane control points and existing, and connecting with the actual terrain, do a good job in the measured data, the measured rough sketches.

Approach to the construction unit after the handover of leveling points and traverse points for retest, after closure comply with the design requirements, traverse points, leveling points of encryption, each 60 meters a worldwide level points, encryption point must be closed adjustment, leveling point L closure of 20), ensure the accuracy of the encryption points, in order to meet the drain height, the precision of the linear control.

Due to pipe line pile in construction is to be cut, so without interference by construction, the method is convenient, easy to protect the local testing pile, construction control and test center line direction control piles, using the extension cord or wire method, pile layout attached structures position control, by using intersection method or parallel lines.