Matters needing attention in production process of p235gh pipe

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The steel such as P235GH pipe delivered in the hot-rolled state has a certain degree of corrosion resistance due to the high temperature, so it can be stored in the open air. However, this layer of oxide scale also makes the hot-rolled steel surface rough and the size fluctuates greatly. Therefore, the steel with smooth surface, accurate size and good mechanical properties is required to be produced by using hot-rolled semi-finished products or finished products as raw materials and then cold rolling.

The riser is an indispensable equipment in the development of offshore oil and gas resources, mainly for drilling, conducting liquid, conducting mud and transporting oil and gas. Because steel catenary risers face complex service conditions such as surges, seabed clay, and ice loads, they need to have high fatigue strength, large plastic deformation capacity, and excellent fracture toughness. At present, China's first self-developed and designed 6-inch steel catenary riser was successfully laid on August 18 this year in the first deep-water self-operated large gas field Lingshui 17-2 project.

BBN STEEL supply various size of plate product p235gh pipe Size stock: 16*1555*11400, 12.7*3316*10500, 12.7*2438.4*12192, 23*2330*11300, 12.7*2518*11380, 6.5*2450*12500, 18*1860*12000, 12.7*2515*12000, 9*2440*12500, 15.1*1550*10400, 12*2680*12000, 12*2520*12000, 18*2020*12000, 11*2365*12000, 14*3470*12000, 12.7*2518*11380, 18*1700*12000, 9.2*2530*12000, 12*2680*12000, 68*2350*7500.

08Cr2AlMo steel retains the contents of corrosion resistant elements Cr, Al and Mo of 12Cr2AlMoV steel, and reduces the carbon content of the steel. Without adding vanadium, the produced p235gh pipe, 08Cr2AlMo steel pipe not only meets the manufacturing process of heat exchanger, but also maintains high resistance to sulfur and hydrogen corrosion. For some special medium, 08Cr2AlMo steel can replace the expensive 18-8 duplex stainless steel and Monel alloy, and it is a new kind of steel with low price and good quality.