Galvanized Steel Pipe Iron Rectangular Pipe

With an annual output of 15 million tons, Yuantai Derun is the largest ERW square pipe, rectangular pipe, hollow pipe, galvanized pipe and spiral welded pipe manufacturer in China. Annual sales reached $5 billion. Yuantai Derun has 59 black ERW pipe production lines, 10 galvanized pipe production lines ,3 spiral welded pipe production lines,1 JCOE LSAW steel pipe production line. Square pipe 10 * 10 * 0.5mm to 1000 * 1000 * 60MM, rectangular steel pipe 10 * 15 * 0.5mm to 800 * 1100 * 60MM, spiral pipe Ø 219-1420mm can be made of yield strength from Q (s) 195 MPa to Q (s) 690 MPa.Yuantai Derun can produce square rectangular tubes according to ASTM A500/A501,JIS G3466,EN10219,EN10210,BV,DIN2240 and AS1163,GB/T9711,GB/T3091,GB/T3094,GB/T6728 etc, and our mill were certified by BC1,EPD,PHD,ISO9001,ISO14001,ISO45001. Yuantai Derun has the largest steel pipe inventory in China, which can meet the urgent purchasing demand of customers. Welcome everyone to contact Yuantai Derun,And visit our factory online or offline.

First, produce ordinary steel pipes with the required welding steel pipe specifications from the steel raw materials, and then proceed with galvanizing treatment. The galvanized steel pipe produced in this way is called hot-dip galvanized steel pipe, also known as hot-dip galvanized steel pipe. Hot dip galvanizing is the process of immersing metal into a zinc melt. To manufacture galvanized steel using this method, we need to follow four steps: cleaning the surface, flux, hot-dip coating, and cooling.

The steel raw materials are first galvanized to produce galvanized strip steel, and then processed to produce steel pipes, which are called galvanized strip steel pipes or pre galvanized steel pipes. One of the advantages of pre galvanized steel over hot-dip galvanized steel is its better appearance. Pre galvanizing includes some steps of hot-dip galvanizing, such as cleaning the surface, immersing in a hot-dip zinc bath, and the coiling process.