Profile: M/S Sohanlal Gupta is involved in the trading of self-drilling screws, butyl tapes, dry wall screws and power tools. Our brand name is HT. Our self drilling screws have xylan coating. We offer colored plastic hex head caps for matching colored roofing sheets. These screws come in different types with various drilling capacities. These screws have the capacity to drill through 10 mm thick purlins.