... curtain wall, color steel plate, light steel keel, gypsum version of the fixed and other industries.2.material is high quality ... carbon steel or wire iron.Having good performance of steel nail and iron nail.3.The surface is galvanized ... the wall with the pneumatic gun. ST Series (Steel row of nails)ModelsST18, ST25, ST32, ST38, ST40 ,ST45 ,ST50, ST57, ST64Length18mm ...