In recent years, an increasing number of stainless steel welded pipe producers, but the level of production reached 5000t very few companies, especially the need to produce online solution annealed stainless steel heat exchanger tubes, condenser and other enterprises is scarce. Only in southern China, Jiangsu, Zhejiang, Jiangsu, Taiwan and other area businesses; only in northern Shandong Jinding Stainless Steel Pipe Industry Co., Ltd., a company is to produce 2000t below most other small plants, and only the production of several common specifications ordinary pipe. Our Stainless Steel Pipe Co., Ltd. Shandong passed ISO / TS16949 quality management system certification, ISO9001-2008 international quality system certification. And a number of European, American, GB certification. For example: 120HBS10 / 1000130: 10mm diameter steel balls expressed in 1000Kgf (9.807KN) test force, maintain 30s (seconds) measured Brinell hardness value 120N / mm2 (MPa) B, Rockwell hardness (HK. ) with Rockwell hardness test Brinell hardness test, are indentation test method is different, it is the measure of the depth of the indentation. That is, in the early Yong test force (Fo) and total test force (F), has the role of the indenter (gold steel cone or ball) pressed into the surface of the sample, after delimitation hold time, removing the main test force, hardness value is calculated by measuring the residual indentation depth increment (e) Its value is an anonymous number to sign HR said that stainless steel pipe, used in the ruler has A, B, C stainless steel pipe 304, D, E, F, G 201 stainless steel pipe, H, K, etc. 9 scale, where commonly used in 316L stainless steel scale hardness test is generally pipe A, B stainless steel pipe 316l, C, i.e. HRA, HRB, HRC hardness values ??calculated with the formula: A and C when using scale test, HR = 100-e when the B scale test when , HR = 130-e where e-- residual indentation depth increment, the even lines to delineate unit 0.002mm show that when an axial displacement of the indenter unit (0.002mm), that is equivalent to a Rockwell hardness A number of changes. 304 stainless steel welded pipe, stainless steel pipe, pipe industry by Shandong Jinding Jinding Stainless Steel Pipe Co., Ltd. Shandong Jinding Stainless Steel Pipe Co., Ltd. (www.jdbxg.cn) strong, credible, in Dezhou steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinding Pipe into the brilliant and you work for a better future!