â¢ Surname is the family name or the last name of a person, whereas first name is the unique name given to a person at birth, also referred to as his Christian name. â¢ Surname is passed down generations, whereas first names are unique depending upon physical attributes or circumstances at birth of a kid.
Products List. Perforated steel pipe is the most inexpensive and popular device for automobile exhaust system, filtration elements and decorative applications. Aluminum perforated tube have excellent corrosion resistance and high strength-to-weight ratio. It is ideal for the places where have strict requirements of weight.
The first plastic pipe to be used was ABS, which is black. Since the 1970s ABS has generally been replaced by white-or cream-color PVC pipe. In rare cases drainpipes are made of copper. Drainpipes must be sloped, usually about 1/4 inch per foot, so water can run freely through them.