1.5 inch 2 inch 2.5 inch Stainless pipe

Stainless Steel pipes are commonly used to measure the hardness of Brinell, Rockwell, Vickers three hardness indexes.
In the Stainless Steel Pipe standard, Brinell hardness is the most widely used, often to indentation diameter to indicate the hardness of the material, both intuitive and convenient. But for harder or thinner steel pipe is not suitable.
The Rockwell hardness test for stainless steel pipe is the same as the Brinell hardness test. The difference is that it measures the depth of the indentation. Rockwell hardness test is a widely used method at present, and HRC is second only to Brinell hardness HB in steel pipe standard. Rockwell hardness can be applied to the determination of very soft to very hard metal materials, it makes up for the Brinell method is not, more simple than Brinell method, can be directly from the hardness machine dial read hardness value. However, because of the small indentation, the hardness value is not as accurate as the Brinell method.
The Vickers hardness test for stainless steel tubes is also an indentation test method that can be used to determine the hardness of very thin metal materials and surface layers. It has the main advantages of Brinell and Rockwell process and overcomes their basic disadvantages, but it is not as simple as Rockwell process and Vickers method is rarely used in steel pipe standards.

Stainless steel pipe is a kind of hollow long round steel, which is widely used in petroleum, chemical, medical, food, light industry, mechanical instruments and other industrial pipelines and mechanical structural parts. 

In addition, when the bending and torsion strength are the same, the weight is lighter, so it is also widely used in manufacturing mechanical parts and engineering structures. It is also used for furniture, kitchenware, etc. 

The hardness of stainless steel pipe is usually measured by Brinell, Rockwell and Vickers. Annealed stainless steel pipe with inner diameter of more than 6.0 mm and wall thickness of less than 13 mm. Production process of Stainless Steel Seamless Pipe A. round steel preparation; b. Heating; c. Hot rolling perforation; d. Cutting head; e. Pickling; f. Grinding; g. Lubrication; h. Cold rolling; i. Degreasing; j. Solution heat treatment; k. Straightening; l. Pipe cutting; m. Pickling; n. Finished product inspection. Common materials are 201, 304 and 316.ETC