Seamless carbon steel pipe (Seamless carbonsteel pipe) is made of steel ingot or solid tube blank through perforation to make capillary, and then hot-rolled, cold-rolled or cold-drawn.

Door and window aluminum profiles are widely used in our lives. The often-mentioned aluminum alloy doors and windows refer to doors and windows made of aluminum alloy extruded profiles as frames, stiles, and fans.

The common shapes are U-shaped grooves and C-shaped grooves. Because they are made of aluminum alloy, they have a beautiful and flat appearance and are easy to clean.

H-beam is an economical section steel with better section mechanical properties than I-beam. It is named because the shape of the section is the same as the English letter "H", people usually think of I-beam and H-beam as a kind of profile, in fact, the two are different.