Astec Tubes needs no introduction, as for many years we are one of the leading and well-established suppliers and manufacturers of Nickel 201 instrumentation pipe fittings. We are known to offer the best quality Nickel alloy products. Even in high concentrations and extremely high temperatures bases cannot affect the utility of these nickel alloy fittings. If we expose these fittings to potent bases like sodium hydroxide in higher concentration and high temperature then, we can experience cracking and etching in it. This phenomenon becomes even more evident in the presence of chlorides and hypochlorite. These Nickel Alloy 201 Fittings resist attack from phosphoric acid and one can easily use it with nitric acid to carry forward any application. These valves do not get affected by any of the weak bases.