The screw hole size and the taper at the base are characteristics. There are three different diameters, each with different lengths, and they are made of steel or aluminum.
■□■ A completely new metal crack repair that is not welding ■□■ The "L Series Pin" is designed so that the size of the screw hole for the L Series Pin is 1/1000 inch smaller than the size of the pin, and it has a large taper (7 degrees) at the base of the screw. When tightened, it crushes about three threads of the female thread at the top of the screw hole. The L Series Pin is used when the repair area does not penetrate the inside or outside of a corner or does not pass through plug holes and bolt holes, or when there is no need to additionally increase structural strength. It eliminates the gap at the crack site while also serving the role of sealing and preventing loosening, demonstrating excellent effectiveness. For more details, please contact us.
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**Features** ○ The pins of the L series come in three different diameters and have various lengths, made from either steel or aluminum. ○ The steel pins are made from a material that has almost the same strength (hardness) and expansion coefficient as cast iron, but are stronger and harder than cast iron. ○ All LNS pins are designed to be inserted up to the shoulder during installation, so when tightening, the head of the pin is cut off, leaving only a slight protrusion on the surface, which can be processed by grinding or machining. ○ Sealing and loosening prevention are achieved with the L series pins. → This feature is also a structure that expands cracks, so it is used when the strength around the crack is strong. (Example of use: combustion chamber of a cylinder block) ● For more details, please contact us.
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<We provide nationwide support> LNS JAPAN Co., Ltd. is an engineering company that performs maintenance and repairs on cracks and damages in equipment and metal structures across various industries (such as petroleum, chemicals, power generation facilities, ships, heavy equipment, automobiles, steelmaking, etc.) using the METAL STITCHING method. Currently, most of the critical equipment used across industries is facing a tough situation regarding new capital investment due to the global economic downturn. In Japan's industries, welding technology, which is widely used for metal repairs, has recently led to significant damage to many pieces of equipment and critical assets due to a shortage of skilled craftsmen and inexperienced welding repairs, with many cases worsening. Our company is the only certified company in Japan and is committed to continuous technological development in collaboration with our parent company, LOCK-N-STITCH INC, which continues to leap and grow as a global enterprise. We promise to ensure that our repairs do not cause deformation or secondary cracks due to heat, which have been issues with traditional welding repairs, while also shortening construction periods and reducing costs, thereby extending the life of equipment and ensuring high quality and prompt maintenance. For repairs where fire is not desired or where time is limited, please contact LNS JAPAN.