The structural appearance of welded elbow

General welding elbow appearance is depending on the steel pipe and choose different knowledge of welding elbow, so, in order to ensure the welding elbow appearance, steel tube usually come in later, if not been rain-out of the yard, so after high temperature of welding elbow push system, general welding elbow appearance is a blue, of course, if it is rain washing, we in the high temperature heating, the heating of the surface of the welding elbow color is red.But overall, we assure you of our steel pipes are not flush rain is hard, because is the summer in the yard by rain have mist after a wash, then push out of the surface of the welding elbow and red.