1. Seamless steel pipe wall thickness inspection: micrometer, ultrasonic thickness gauge, no less than 8 points at both ends and record.
2. Check the outer diameter and ovality of seamless steel pipe: caliper, vernier caliper, ring gauge, and measure the maximum and minimum points.
3. Seamless steel pipe length inspection: steel tape measure, manual and automatic length measurement.
4. Seamless steel pipe curvature inspection: straightedge, level (1m), feeler gauge, thin wire to measure the curvature per meter and the full length curvature.
5. Inspection of the bevel angle and dull edge of the seamless steel pipe end face: square, pallet.
Surface quality inspection of seamless steel pipe:
1. Artificial visual inspection: lighting conditions, standards, experience, signs, seamless steel pipe rotation.
2. Non-destructive flaw detection: ultrasonic flaw detection UT, eddy current flaw detection ET, magnetic particle MT and magnetic flux leakage flaw detection, electromagnetic ultrasonic flaw detection, penetrant flaw detection.