Abstract: Introduced here in the essay are the development histories of the four steel-tube making companies i.e.,French Vallourec Group,Mexican Tenaris Group,Russian Steel Tube Metallurgy Group and Japanese NSSMC, and their operation situations,market distribution and representative types of tubings and casings over the recent years.Also conducted are comparative analyses between the said companies in terms of sales volume changes,profit status,market distribution characteristics and differences between product type structures etc.,based on which,the enlightenments involving six main aspects to development of domestic seamless steel tube companies are proposed.