Super-pressure hydrogen cylinder manufacture method

The invention relates to a preparation method of a super-pressure hydrogen cylinder, which comprises choosing seamless steel pipe which is hot-roll-formed by high grade chrome-molybdenum steel whose wall thickness is not less 27mm, S is smaller 0.01.%, and P is smaller 0.020% as base material, no existing the weakness of wall thickness 5%line size through supersonic inspection, processing the form of the two end by rotationally pressing reducing, flattening the heads of the two ends, removing inner and outer folds on the shoulder portion, shot-blasting the inner side and the outer side of the bottle, heat hardening with heating temperature of 850-950 DEG C, tempering in 580-700 DEG C, accurately processing the end face of the bottle and inner threads and outer threads, shot-blasting the inner side and the outer side of the bottle in second time to remove remanent stress concentration area, proceeding 100% magnetic particle detection for the bottle, proceeding 100% ultrasonic detection to the two ends, carryin