... after received the imprest OD219-3400mmWT5-30mmMaterialQ235,Q345,GR.B,X42/X46/X52/X56/X60/X80/X100StandardAPI 5L, ... project Heat-supply project Conveying drinking water, drainage, coal gas, fuel gas, mine slurry and other low & middle pressure fluids Chemistry ... FLAWDETECTION PRESSURETESTING ULTRASONIC MECHANICALAERFORMANCEANALYSIS SSAW Steel Pipe for gas pipeline project API 5L x52 steel grade 14" ...