In recent years, the demand for ultra-high strength steels, the so called X-grades, continuously rose. The main application for the X-grades is offshore pipes fulfilling their duties under extreme conditions. The X-grades are hot rolled and then wound-up to coils.
X-grade coils are extreme. They feature very high tensile strengths and they are coiled under high strip tensions. These coils are fully loaded with high spring forces, which have to be kept under control at any time.
X-grade coils place specific and extreme demands on their strapping. The strapping needs to be extraordinary strong to keep the spring forces within the coil from breaking out. The strapping needs to be absolutely secure and reliable under all conditions, i.e. during coil handling, coil storage and when the coils are stacked. The sealing must be consistently reliable and render high joint efficiency. The overall strapping solution must be economical.
TITAN developed a dedicated strapping solution for X-grades which comprises a super high tensile strap, an ultra-strong strapping head and a 3 spot welded sealing, based on the ultra-reliable TITANARG® technology.
The strapping head for X-grades is called VS32-L-SM. It is based on the field proven and very robust VS32-L, a strapping head for high tensile strap up to 32 x 0.8mm | 1 ¼ x 0.031’’. The standard VS32-L has been strengthened and modified and the VS32-L-SM is now capable to strap super high tensile strap up to 32 x 1.45mm | 1 ¼ x 0.057’’.
The main features of the VS32-L-SM are a roller based strap guide for the reduction of strap friction and transport forces, a reinforced sealing unit including a reinforced strap cutting system and a welding console hosting a three torch welding system.
Also, the TIG welding system has been further improved. Beside many other features, the new TITAN L 350 TI welding unit offers the best welding technology ever including an improved automatic quality control of the welds.
X-grades coils are extreme. Only a dedicated strap and a dedicated strapping head, like the Titan VS32-L-SM, represent an adequate strapping solution … for your most economic and securest X-grade coil handling.