Welded steel pipe, also known as welded pipe, is made of steel plate  or strip steel after crimping. The production process of welded steel pipe is simple, the production efficiency is higher, the cost is more lower, the product variety is getting richer, but the general strength is lower than seamless steel pipe.

304 stainless steel is a highly-recognized material for its corrosion resistance, heat resistance, low temperature strength and mechanical properties. In addition, it has exceptional hot-workability such as stamping and bending, without leaving heat treatment hardening phenomenon, being one of the most widely used types of stainless steel.

304L stainless steel has a very similar chemical composition to 304 stainless steel with one key difference. The maximum carbon content is set at 0.08% for 304, whereas grade 304L stainless steel has a maximum carbon content of 0.03%. It is more often adopted in the production of equipment and parts that require better corrosion resistance.

310S stainless steel is austenitic chromium-nickel stainless steel, with good oxidation resistance, corrosion resistance, because of a higher percentage of chromium and nickel, it has better creep strength, can work at high temperatures continuously, with good high temperature resistance.

316L stainless steel has a lower proportion of carbon in its composition, the amount of carbon cannot go over 0.03%. This lowers the chance of carbon precipitation, making it an ideal option for welding to ensure maximum corrosion resistance.

316 stainless steel contains 2-3% molybdenum, aside from iron, chromium and nickel. The addition of molybdenum significantly improves the performance of 316 stainless steel in certain corrosive environments, especially those containing chlorides. 316 stainless steel is more commonly used when higher corrosion resistance is needed.

2205 Duplex stainless steel alloy is a duplex stainless steel composed of 22% chromium,3% molybdenum and 4.5% nickel nitrogen alloy. It is featured by high strength, good impact toughness and good overall and local resistance to stress corrosion.

Square rectangular pipe is a term for square and rectangular pipes, which refers to steel pipes with equal or unequal side lengths. It is rolled from strip steel through process processing. Generally, the strip steel is unpacked, flattened, curled, and welded into circular tubes, which are then rolled into square tubes and cut to the required length.

Square rectangular pipe is a term for square and rectangular pipes, which refers to steel pipes with equal or unequal side lengths. It is rolled from strip steel through process processing. Generally, the strip steel is unpacked, flattened, curled, and welded into circular tubes, which are then rolled into square tubes and cut to the required length.

Square rectangular pipe is a term for square and rectangular pipes, which refers to steel pipes with equal or unequal side lengths. It is rolled from strip steel through process processing. Generally, the strip steel is unpacked, flattened, curled, and welded into circular tubes, which are then rolled into square tubes and cut to the required length.

303 stainless steel is an austenitic acid stainless steel containing sulfur and selenium that is easy-cutting and wear-resistant. It is used in situations where easy cutting and high surface finish are required.

302 stainless steel is an austenitic stainless steel that has 18% chromium and 8% nickel. Its chemical composition relies heavily on reasonable alloy design to achieve a series of excellent properties.