Weve established on the basis of rich High-frequency precision welded pipe line making experiences both in welded pipe manufacturing and cold rolling producing for many years,and developed and designed Precision High Frequency Welded Pipe Mill by itself,so the advanced manufacturing technology of our company has competed with theirs of the USA,Japan,Taiwan,and some countries and religions,etc. in many fields. At present,we have a competent place in both domestic markets and foreign markets. Now,