Industrial pipeline pigs, namely, industrial pipe cleaning devices comprised of metal mandrel spool sections, scraper cups and loaded or circular cleaning brushes, and which are launched into pipes for purposes of scraping and cleaning the internal surface of the pipe walls

'brush':22 'circular':20 'clean':7,21,34 'compris':9 'cup':16 'devic':8 'industri':1,5 'intern':36 'launch':26 'load':18 'mandrel':12 'metal':11 'name':4 'pig':3 'pipe':6,28,40 'pipelin':2 'purpos':30 'scrape':32 'scraper':15 'section':14 'spool':13 'surfac':37 'wall':41

ISTE PIG

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