小口径焊管

采用纵剪带钢生产小口径螺旋焊管时，超声波检验经常在焊缝的一侧发现缺陷波，而X射线拍片检验却很难发现。

The defects will be found in the seam side with ultrasonic inspection but hardly found with X ray inspection as the small diameter spiral pipe production with the split strip steel .

该该新型螺旋焊管内焊装置调节灵活，稳定性好，可应用于内焊单丝或双丝焊接，特别适合于小口径螺旋焊管生产的内焊工艺要求。

The welding apparatus is flexible for adjustment and has good stability , and can be used for single and double wire internal welding , especially satisfied with the requirements of internal welding techniques of small diameter spiral pipe production .

论述了Φ12mm以下小口径单层钎焊管的全部生产工艺过程，包括坯料制备、成形、钎焊、矫直、探伤及特殊用途管的处理等。

The whole process of small diameter single-wall brazing tube is described , including stee strip making , forming , brazing , straightening , detection of defects and the treatment of special tube .