Sun Through’s Q9 spiral self-drilling screws are especially designed for 25mm steel sheets.

Self-Drilling Screws

Sun Through Industrial Co., Ltd., founded in 1997, is a manufacturer highly specialized in self-drilling screws (Self-Drilling Screws), generally made of carbon steel and bi-metal (stainless steel + carbon steel).

The company’s line is roughly divided into three major categories: the patented arrow-wing Self-Drilling Screws, spiral Self-Drilling Screws, and bi-metal Self-Drilling Screws. With the drilling capacity from 12mm to 25mm, the most advanced spiral Self-Drilling Screws is patented in the European Union, Taiwan and China.

Sales representative Lynn Lin says that her company is the worlds’ only manufacturer of such spiral Self-Drilling Screws capable of penetrating 25mm thick steel sheets, adding that such products have been shipped to the European Union since the beginning of 2008 after having been developed at the end of 2007, and further noting that these products are popular in the construction industry.

The company’s consistent R&D efforts enable the ongoing development of self-drilling screws to penetrate even heavier gauge steel sheets, with the Q10 series to be designed for 30mm sheets, and Q5 for 12mm steel sheets.

The company says its screws are designed to save manpower and time: The arrow-wing Self-Drilling Screws can penetrate 45mm hardwood combined with 6mm steel sheet, with the arrow-wing built at the tail-end of the screw to minimize cutting of raw materials.

To ensure high and consistent quality, Sun Through carries out in-house the key manufacturing processes such as threading, self-tapping and heat treatment. “Our persistence to develop high-end products has won customers’ praise, with one European client claiming our self-drilling screws are 40% to 50% more efficient than those made by rivals,” says Lin.

Having made a name in many western industrialized nations, the company says it will continue to develop innovative products for specific construction jobs. The company says it is a frequent exhibitor at the hardware and industrial-product exhibitions in Cologne and Stuttgart, having debuted machine screws at an exhibition in Stuttgart in October, 2009, with such screws being notable for the threads remaining undamaged after being set in steel sheets.

Having just returned from an exhibition held in Las Vegas in November 2009, Lin says the screw sector seems to have recovered from the global recession, indicated by the number of visitors relative to that of the same show in the preceding year.