... but also practical. BN10 UnitBN10 mill line is specially used for producing high precision straight seam welded pipe in diameter ... . Forming mill, HF welder, cooling mill, sizing mill and straightener are made by one line, the components used are from famous ... kwhigh frequency power: 60 kwunit components: uncoiler, shear and end welder, accumulator, forming, welding and sizing unit, flying cutting saw, ...