What Is the Difference Between A105 and A105 HDG Steel ?

✅ A105 – is carbon steel intended for the production of pressure components such as threaded fittings, flanges or valves.

✅ A105 HDG – is exactly the same ASTM A105 steel, but additionally hot-dip galvanized (HDG – Hot Dip Galvanized).

BSP vs NPT – What Is the Difference Between the Threads and Why Must They Not Be Connected?

BSP or NPT? This is one of the most frequently asked questions.

At first glance, BSP and NPT threads look very similar. Many users try to connect them because the component “screws in a few turns”. Unfortunately, such a connection very often results in leakage or thread damage.

If you work with hydraulic, pneumatic or industrial installations, it is worth knowing the basic differences.