my factory located in one of  the largest national production bases of seamless steel pipe fo r casing, established in 1958,is a large professional state-owned enterprise producing seamless steel pipe ,Now it has formed a production capacity of annual output of more than 400,000 tons of seamless steel pipe in two big series ,hot-rolled and cold --drawn pipes ,of more than 30 varieties and over 1000 norms .

Alternate View