HTS is responsible for the fixed torque fastening of flanges of several devices in the maintenance items of the petrochemical enterprise. During the construction, HTS found that there were defects in several flanges, and HTS repaired the faces of these flanges. The flange specifications range from DN50 to DN1400, and the flange forms are RF and RJ, including heat exchanger shell flange, head flange, manhole flange and pipeline flange, etc.

HTS completed flange face repair services many times, including repair of equipment body flange and pipeline flange, etc.

HTS is responsible for the fixed torque fastening of the flanges of the catalytic cracking and atmospheric and vacuum distillation units in the maintenance project. During the project development, there are many defective flanges on the site. Haitaisi has invested many sets of full-scale equipment and personnel to repair the flange end face. The repair flange specifications range from DN20 to DN1600, etc. The flanges include equipment body flanges and pipeline flanges, and the flange sealing surfaces are RF and RJ, etc.