St37-2 is a kind of general structural steel under DIN17100. St37-2 has a certain degree of strength and elongation, good toughness, easy to stamping and welding. St37-2 is widely used in manufacturing general machinery parts.

DIN1628 St44.4 has high strength, which makes DIN1628 St44.4 ERW Tube and Pipe can withstand the high pressure. ERW is one kind of welding process with the advantage of high welding quality, fast speed and high quality welding.

DIN1628 St52-3 is a kind of general structure low-alloy steel, it has high mechanic strength and loading capacity. ERW technology is one of the most widely used welding methods in the world recently.

Din1628 St37.4 is one kind of carbon steel, with excellent toughness and welding property. St37.4 is the most common material to be used for producing pipe and tube. DIN1628 St37.4 ERW Tube and Pipe are widely used in liquid and gas transportation.