The answer is definitely for good life of human beings when we get steel pipe from suppliers, whether it is seamless steel pipe, welded steel pipe or galvanized steel pipe. Without steel pipe, life would be horrible nowadays. Different steel pipe would have speciality for its special characters. Here is the pipe introduction of SMLS steel pipe which belongs to seamless steel pipe. There are six main categories for SMLS steel pipe: Fluid pipe, line pipe, structural pipe, high-pressure boiler pipe, low and medium pressure boiler pipe, casing and tubing pipe. Their difference is here in the list and you can see clearly. You can contact us once you choose the one you needed and of course, plz tell us once you have any questions with the list here.