35 * 1800 * 9000 T22 seamless steel pipe produced by Jiangsu WISCO ＞￥＜ manufacture

  With regard to seamless steel pipe, after the rapid rebound in the previous period, the price increase in the domestic steel market slowed down significantly last week, and the driving force for continued rise weakened; In the case of poor transaction, the market weakness is gradually emerging, coupled with the weak and weak shock of the phase I steel market, which further aggravates the wait-and-see mentality of businesses
Therefore, the steel price fell sharply last week, and both the supply and demand sides have a certain wait-and-see mentality
Due to the impact of the rain in the South and the reappearance of the financial pressure of businesses at the end of the month, it is expected that the domestic steel price will continue to fluctuate and operate weakly in the short term www
chuanbanxs
com  Information about seamless steel pipe China not only does not encourage the export of steel products, but also is the only country in the world that has taken the initiative to take restrictive measures against the export of ordinary steel
China will still attach great importance to and actively resolve the excess capacity of the iron and steel industry
The State Council issued the opinions on resolving overcapacity and achieving poverty alleviation and development in the iron and steel industry, which requires that on the basis of eliminating backward production capacity in recent years, the crude steel production capacity should be reduced by 100-150 million tons in five years from 2016
Achieving this goal will lay a very important foundation for the healthy development of the iron and steel industry in the future
However, to achieve this goal, we need to do a lot of hard and meticulous work
It requires the joint efforts of all departments and local governments and enterprises at all levels to implement a series of important arrangements of the central government and the State Council on resolving overcapacity Relevant knowledge of seamless steel pipe ④ Reduction of area (& psi;) In the tensile test, the percentage between the maximum reduction of the cross-sectional area at the reduced diameter and the original cross-sectional area after the sample is broken is called the reduction of area
In & psi; Expressed in%
The calculation formula is as follows: where: S0 -- the original cross-sectional area of the sample, mm2; S1 -- minimum cross-sectional area at the reduced diameter after sample breaking, mm2
⑤ Hardness index is the ability of metal materials to resist the indentation surface of hard objects, which is called hardness
According to different test methods and application scope, hardness can be divided into Brinell hardness, Rockwell hardness, Vickers hardness, shore hardness, microhardness and high temperature hardness
Brinell, Rockwell and Vickers hardness are commonly used for pipes
A
Brinell hardness (HB): press a steel ball or cemented carbide ball with a certain diameter into the sample surface with the specified test force (f), remove the test force after the specified holding time, and measure the indentation diameter (L) on the sample surface
Brinell hardness number is the quotient obtained by dividing the test force by the spherical surface area of the indentation
Expressed in HBS (steel ball), unit: n / mm2 (MPA)
The calculation formula is: where: F -- test force pressed into the surface of metal sample, N; D -- diameter of steel ball for test, mm; D -- average diameter of indentation, mm
The determination of Brinell hardness is more accurate and reliable, but generally HBS is only applicable to metal materials below 450N / mm2 (MPA), not for hard steel or thin plates
Brinell hardness is the most widely used in steel pipe standards
Indentation diameter D is often used to express the hardness of the material, which is intuitive and convenient
Example: 120hbs10 / 1000 / 30: it means that the Brinell hardness value measured by using a 10mm diameter steel ball under the action of 1000kgf (9
807kn) test force for 30s is 120N / mm2 (MPA) Sales Department 1 mobile phone: 15966289262 Tel: 0635-2110859 Fax: 0635-2110859 contact: Manager Wang Sales Department 2 mobile phone: 15865732736 Tel: 0635-2110859 contact: Manager Li address: Shandong Junsheng Hongda Steel Co
, Ltd
, No
359, zone B, Huitong International Metal logistics park, Liaocheng Economic Development Zone, Shandong Province 486392963@qq
com   Shandong Junsheng Hongda steel company mainly relies on the national steel market resources to produce and process steel plate cutting products of various specifications and geometric shapes
After a rapid rebound in the previous period, the price increase in the domestic steel market slowed down significantly last week, and the driving force for continued rise weakened; In the case of poor transaction, the market weakness is gradually emerging, coupled with the weak and weak shock of the phase I steel market, which further aggravates the wait-and-see mentality of businesses
Therefore, the steel price fell sharply last week, and both the supply and demand sides have a certain wait-and-see mentality
Due to the impact of the rain in the South and the reappearance of the financial pressure of businesses at the end of the month, it is expected that the domestic steel price will continue to fluctuate and operate weakly in the short term
The company is based on & ldquo; Law abiding, trustworthy, innovative and reputation creating & rdquo; Our business strategy and the management concept that making high-quality products must first create human character, with our three advantages of technology, management and talents, we wholeheartedly provide high-quality and satisfactory products and services for customers at home and abroad
The company can handle cash on delivery, acceptance and monthly settlement according to the customer's situation, so that you can purchase with one-stop confidence 35 * 1800 * 9000 T22 seamless steel pipe produced by Jiangsu WISCO ＞￥＜ Manufacturer www
chuanbanxs
com