All of our safety spade blinds are designed and manufactured to meet American Society of Mechanical Engineers (ASME) quality standards. Our manufacturing facilities have the capability to fabricate and test our safety blinds to customer specifications. In the past, many of Steinmans' customers have special ordered line blinds with minimum thickness to be used as a simple yet essential safety device to block potential flow in a line during a shutdown or scheduled maintenance. Due to the volume of such special orders, Steinmans has redesigned the standard line blind - also known today as the paddle blind, slip blind, spectacle blind, figure 8 blind, or spade blind - to offer more safety features and benefits.