Repairman near heating main pipeline at heat station. Engineering supervision. Service engineer at heat electropower station. Worker in yellow hard hat near heating main pipeline at heat station
Repairman near heating main pipeline at heat station. Engineering supervision. Service engineer at heat electropower station. Worker in yellow hard hat near heating main pipeline of heat station
Heat electropower station and long-distance pipe line
Engineering supervision. Service engineer at heat electropower station. Worker in yellow hard hat near heating main pipeline
Service engineer at heat electropower station. Worker in yellow hard hat near heating main pipeline. Engineering supervision
Heat electropower station and long-distance pipe line with U-type compensating pipe
Heat electropower station and long-distance pipe line with U-type compensating pipe
Heat electropower station and long-distance pipe line with U-type compensating pipe
Heat electropower station and long-distance pipe line with U-type compensating pipe
Heat electropower station and long-distance pipe line with U-type compensating pipe
Heat electropower station and long-distance pipe line with U-type compensating pipe
Heat electropower station and long-distance pipe line with U-type compensating pipe