Pigging tee for blocking is the special tee for pipeline with blocking operation, and is also the key product for realizing pipeline blocking operation without stop and the important accessory for assuring the safety of pipeline production. Hot pressing tee for blocking has less structure stress than welding tee to avoid defect that flaw of welding seam is unable to be detected, so it can eliminate welding seam of intersecting line to improve safety performance effectively.

Technical Index

The material and design stress strength of Pressure parts should be in accordance with ASME B31.8 standard.

Branch pipe axis and main pipe axis of hot-pressing tee for blocking meet the requirements of vertical accuracy with vertical degree less than or equal to 2 mm.

The distance between top guard board and bottom guard board of tee and main pipe line is less than 3mm.

Hydraulic pressure strength test with test pressure of 15MPa and pressure holding time of 30 minutes is qualified.

Leak test with test pressure of 10MPa and pressure holding time of 24 hours is qualified.

Advantaged Technology

Hot-pressing tee for blocking can eliminate defects of welding seam of tee's intersecting line to improve construction quality of emergent maintaining and repairing, reduce cost and improve safety performance of use.

CPPM makes the structure form of tee for blocking more scientific and reasonable and makes use more safe and reliable through optimizing design with finite element analysis method and scientific experiment method.

CPPM can maximally reduce the thickness of tee and bottom guard plate to save material effectively, shorten the welding time and improve the work efficiency.