We are specialized in the pipe joints.We can offer you samples after you accept our price. We are specialized in all various kinds of mechanical components, precised machined parts and pipe joints;1). Material: carbon steel, alloy steel, stainless steel, aluminum,steel,etc.2). Finish: black oxide, zinc/nickel/chrome plating, power coating, passivate, oiled to prevent rust, and so on.3). High good ...