A Brief Introduction About Seamless Steel Pipe Type

The time of issue:2014-5-26 10:14:38       Author:

We all know that seamless steel pipe is a kind of strip type steel with hollow shape, and it is widely used in conveying fluid including gas, coal gas, water, petroleum, etc. Because of its obvious advantages like weight light, strong torsional strength, it is also widely used to manufacture machine parts and engineering structure. Moreover, it can even used to manufacture all kinds of conventional weapons, barrels, bullets, etc. In this article, we will introduce various seamless steel pipe types as follow. By using steel ingot or solid tube blank, the steel is made into hollow billet, and after hot rolling, or cold rolling, the seamless steel pipe is made. According to the manufacture process, the seamless steel pipe type can be divided into two kinds: hot-rolling seamless steel pipe and cold-rolling seamless steel pipe.

And the seamless steel pipe type can be divided more specifically. The hot-rolling seamless steel pipe can be divided into general steel pipe, low and medium pressure boiler steel pipe, high-pressure boiler steel pipe, alloy-steel pipe, stainless steel pipe, petroleum cracking steel pipe, geology steel pipe, etc. And the cold-rolling seamless steel pipe can be divided into general steel pipe, low and medium pressure boiler steel pipe, high-pressure boiler steel pipe, alloy-steel pipe, stainless steel pipe, petroleum cracking pipe, carbon thin wall steel pipe, stainless thin wall steel pipe, special-shaped steel pipe, etc. There are many seamless steel pipe types and we will introduce some more specifically as follow.

Different seamless steel pipe type has different features. The external diameter of hot-rolling seamless steel pipe is longer than 32mm, and its thickness ranges from 2.5-75mm, while the external diameter of cold-rolling seamless steel pipe is about 5mm, and its thickness is less than 0.25mm. Moreover, the dimensional accuracy is different thorough different seamless steel pipe types. The dimensional accuracy of hot-rolling seamless steel pipe is higher than the cold -rolling seamless steel pipe.

Now we introduce one of the main seamless steel pipe types. High-pressure boiler steel pipe is used to make steam generator pipe which is higher than high pressure. This kind of seamless steel pipe adopts superior carbon constructional steel, alloy structural steel, stainless and heat resistant steel, so that it won't be corroded under the high temperature and high pressure. This kind of steel pipe has strong endurance strength and strong oxidation resistance ability. Moreover, the petroleum cracking steel pipe is also a kind of main seamless steel pipe types. It is used to make drilling machine in order to detect the structure of underground stratum, underground water, gas, etc. This kind of seamless steel pipe should possess strong strength, and nice hardness, excellent abrasion resistance ability, etc.

API steel pipe is a kind of steel pipe which deserves to be mentioned. It belongs to the American petroleum standard, and with the development of pipeline and steel plate technology, API steel pipe is more and more popular. It has bright prospect thanks to its strong corrosion resistance ability.

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