The seamless square pipe is a square steel pipe with four corners and a square steel pipe cold-drawn and extruded from a seamless steel pipe. Kuna tofauti muhimu kati ya pipe ya viwanja vya msingi na pipe ya viwanja.Mawizi ya wizi yanakuwa na kipande cha chini na yanatumiwa kwa kiasi kikubwa kama mabasi kwa ajili ya kusambaza mafuta.
