The quality of rolled pipes is directly related to engineering safety，Strictly enforced within the industryGB50235、GB/T50205Waiting for national regulations，Key attention should be paid during acceptance inspection5Core Standards。One is the quality of the weld seam，Need to go throughRT（radiographic testing）、UT（Ultrasonic flaw detection）detection，Meet the second level or above qualification standards，Eliminate incomplete welding、Defects such as cracks；The second is dimensional accuracy，Perimeter deviation≤±5mm，roundness≤outer diameter1%，Docking misalignment quantity≤wall thickness10%And not exceeding3mm；Thirdly, the material meets the standard，Proof of steel plate material required，Ensure compliance with design requirements（asQ235B、Q345B、X80wait）；The fourth is hydraulic pressure test，The test pressure is the working pressure1.5times，pressure holding30No leakage in minutes；Number five is surface quality，No obvious scratches、rust、transform，Uniform and intact coating。