supply of blow through cock body (part finished)blow through cock body (part finished),supply of blow through cock body (part finished) for gauge column bottom of x class locomotive as per drg no goc/x/sk-07-03510 sheet 2. note: 1. one integral test piece should be provided for one heat batch, it should be parted in presence of railway authority for material testing before machini ng. [ warranty period: 30 months after the date of delivery ] ] , blow through cock body (part finished) for gauge column bottom of x class locomotive as per drg no goc/x/sk-07-03510 sheet 2. note: for material specification, the firm has to submit nabl accredited lab test certificate along with the material supply [ warranty period: 30 months after the dat e of delivery ] ] => limited