Φ720 Production Line

It is a large size seamless steel pipe production line newly built by BBN Steel, it is a key project of BBN Steel, it is also a foundation stone for BBN Steel to realize the goal of 3 million annual production capability. The designed annual capacity is 150,000tons per year, size range is Φ273～720×8～120mm.

　The main products are: structural seamless steel pipe, low and medium pressure boiler seamless steel pipe, high pressure boiler seamless steel pipe, high pressure fertilizer equipment seamless steel pipe, oil cracking seamless steel pipe, stainless heat resistant seamless steel pipe, hydraulic cylinder hot rolling seamless steel pipe, fluid transmission seamless steel pipe, casing and coupling, gas bottle seamless pipe and etc., among which 70,000 tons are high grade seamless pipes need to be heat treated. 

　Φ720 mill adopts periodic rolling mill to produce hot rolling seamless steel pipe, it extends the size range of the products producing by existing 340 mill to over F720mm, together with other mills, it helps to form a complete seamless steel pipe production mill series. It has the advantages of producing lots of varieties, large sizes, heavy wall thickness, focuses on producing very large sizes, very heavy wall thickness and high alloy seamless steel pipes.