hot dip galvanized steel pipe 2.OD:21.3-610mm 3. ... .Length:3-20m 5.Best quantity,Competitive price 1.hot dip galvanized steel pipe2.OD:21.3-610mm 3.W.T ... . Also for chemical industry, building structure and pile driving, etc.12. Export to theseCountriesCanada, USA, Peru, Chile, Colombia, Brazil, ... Italy, France, England, Belgium, etc13.CertificatesAPI 5L , API 5CT, ISO ,CE hot dip galvanized steel pipe