As a rule, foreign customers tend to distinguish the wall thickness of pipe as per different color coating in both ends of pipe. We have two major kinds of pipe body color treatment in foreign pipe market. One is to brush different colors to make a distinction between various wall thickness of pipe. This color treatment applies to both the black steel pipe and the pre galvanized pipe. And the other is to brush a color ribbon in both ends of pipe.
date_rangeNov 21' 2019 / India
date_rangeApr 03' 2019 / China
date_rangeMar 11' 2019 / China
date_rangeOct 16' 2018 / China
