SEAMLESS Steel Pipe A355 P91 Outer Diameter 16" Wall Thickness Sch-10s

What is a Seamless Pipe?

Stainless steel pipe is a kind of hollow long round steel, which is widely used in industrial transmission pipelines and mechanical structural components such as petroleum, chemical industry, medical treatment, food, light industry, machinery and instruments, etc. In addition, when the bending and torsional strength are the same, the weight is light, so it is also widely used in the manufacture of mechanical parts and engineering structures. It is also commonly used as furniture, kitchenware, etc.a

mless pipes are derived from solid steel that is in s

Pipe end shape

Stainless steel pipe can be divided into smooth pipe and threaded pipe (threaded steel pipe) according to the state of pipe end. Threading pipes can be divided into ordinary threading pipes (pipes for transporting water, gas and other low-pressure pipes, which are connected by ordinary cylindrical or conical pipe threads) and special threaded pipes (pipes for petroleum and geological drilling, which are connected by special threads for important threading pipes). For some special pipes, in order to make up for the impact of threads on the strength of pipe ends, pipe ends are usually thickened (internal thickening, external thickening or internal and external thickening) before threading.

Nconel625 is a brand of alloy with a density of 8.4 g / cm3 and a melting point of 1290-1350 ℃. It has excellent corrosion resistance to inorganic acids and various corrosive media in oxidation and reduction environment.

Alloy 625 shows excellent corrosion resistance in many media. It has excellent resistance to pitting corrosion, crevice corrosion, intergranular corrosion and corrosion in chloride medium.

A335 P91, steel model. It has high oxidation resistance and high temperature steam corrosion resistance

characteristic:

It not only has high oxidation resistance and high temperature steam corrosion resistance, but also has good impact toughness, high and stable durable plasticity and thermal strength. When the service temperature is lower than 620 ℃, the allowable stress is higher than that of austenitic stainless steel. Above 550 ℃, the recommended design allowable stress is about twice that of T9 and 2.25Cr-1Mo steel.

application

It can be used as steel pipe for high-temperature superheater and reheater of subcritical and supercritical boilers with wall temperature ≤ 625 ℃, as well as high-temperature header and steam pipe with wall temperature ≤ 600 ℃, as well as nuclear electric heat exchanger and furnace pipe of petroleum cracking unit.

About Us