stainless steel flanges

Yongjin Technology: Strive To Build A First-class Stainless Steel Production Base On August 26, a reporter from Mindong Daily came to Fujian Yongjin Metal Technology Co., Ltd. (hereinafter referred to as "Yongjin Technology"), located in the Wanwu Peninsula, the world’s largest single stainless steel production base. Yongjin Technology Production Workshop The workshop is 380 meters long. The continuous annealing and pickling line adopts full-process automatic control, and only 8 employees are required per shift. The high degree of automation minimizes manual operations and ensures the continuous stability of product quality. The modern transportation equipment in the workshop is busy with finished product loading and transportation, which is a busy scene. Yongjin Technology is a national high-tech enterprise in China and a "specialized, special, new, and refined" enterprise in Fujian Province. It mainly produces 300 series of precision stainless steel belt...

254SMo steel (S31254, 00Cr20Ni18M06CuN) is one of the earliest super austenitic stainless steels developed in the 1970s. It not only has good overall corrosion resistance in reducing media, but also has excellent resistance in chloride-containing media The performance of local corrosion such as pitting corrosion and crevice corrosion.  At the same time, the strength of this steel is higher than that of general chromium nickel austenitic stainless steel due to the strengthening effect of nitrogen. It is precisely because of these characteristics that 254SMo steel has become increasingly widely used, and it can also replace high nickel corrosion-resistant alloys in some applications. Chemical composition and organizational characteristics of 254SMo The solid solution state of 254SMo is a single austenite structure, but it is affected by the thermal history. For example, carbides and intermetallic phase compounds will precipitate in the heat affected zone during the cooling pro...

When titanium in stainless steel, carbon will preferentially combine with titanium to form titanium carbide, which can effectively prevent the formation of chromium carbide and the grain boundary depletion formed by precipitation, and ultimately can effectively prevent intergranular corrosion. What is intergranular corrosion? When the chromium-nickel austenitic stainless steel is heated to a temperature range of 450-800℃, corrosion along the grain boundary often occurs, which is called intergranular corrosion. Because titanium and nitrogen can be combined to form titanium nitride, and titanium and oxygen can be combined to form titanium dioxide, the amount of titanium added is limited accordingly, which is about 0.8% in practice. In order to avoid intergranular corrosion, the titanium-containing stainless steel must be stabilized after solution treatment. When the temperature is increased to more than 450°C, carbon in the solid solution will gradually precipitate in the form of...

Learn the reasons why the price of stainless steel seamless pipes cannot come down from 3 points Recently, the  stainless steel seamless pipes  market has reached a deadlock, rising and falling! But the deadlock is always broken, so where is the point of breaking this deadlock? Let's analyze a little bit. 1. Supply: China's domestic crude steel output in July was nearly 100 million tons, and the supply of stainless steel seamless pipes remained high. China's crude steel production in July was 93.36 million tons, a year-on-year increase of 9.1%. Moreover, judging from the current maintenance plans announced by various steel mills, there are even fewer steel mills willing to conduct maintenance in August than in July. Therefore, on the supply side, there will be an oversupply situation in the short term. 2. Demand: real estate policy. At the Politburo meeting on July 31, the policy side again emphasized the purpose of "prohibiting raising housing prices."...

TP316L Stainless Steel Pipe Market Is In A Dilemma After the start of June, July and August, the trend of rising and falling TP316L  stainless steel pipe  has continued to this point. The dilemma of the market outlook has made manufacturers doubtful and they are watching. Cost: billet and strip steel continue to rise [Steel billet]  On the 11th, Tangshan billet rose 10 to 3440 yuan/ton, and the transaction of direct billet delivery was fair. At present, the steel billet market has tight resources, coupled with the support of raw material cost, manufacturer and  stainless steel pipe fittings supplier  are still looking forward to the rise. However, with the recent rise in prices, the market's fear of heights has gradually become prominent, and the downstream replenishment is more hesitant. In addition, the trend of futures is diving in the afternoon, and the short-term billet price is expected to stabilize. [Pipe]  The current market price has ...

Hastelloy® C276 NS334 UNS N10276 Hastelloy C276 is a nickel-chromium-molybdenum alloy containing tungsten, which is known for its corrosion resistance in various corrosive media. The high content of molybdenum, it is resistant to localized corrosion such as pitting, the low carbon content, the precipitation of carbides during the welding process is minimized, so the resistance to intergranular corrosion of the heat-affected zone of the welded joint can be maintained. Development History C-276 alloy (00Cr16Ni60Mo16W4) came out in 1965. After 1970, it was produced by out-of-furnace refining process (AOD, VOD) to obtain ultra-low carbon (C≤0.02%) and high-purity alloy intrinsic quality. In order to reduce the sensitivity and brittleness of the intergranular corrosion of Hastelloy C alloy after welding and hot forming, to overcome the serious shortcomings of solid solution treatment after welding or hot forming of Hastelloy C alloy, except for low carbon content (C≤0.02 %), it a...

This is expected to drive down inventory pressure on suppliers In July, China's  stainless steel seamless pipe  market fluctuated upward; in August, as the high temperature and rainy season gradually decreased, the demand for construction steel is expected to continue to be repaired. The continuous recovery of the manufacturing industry drives the release of stainless steel seamless pipe demand, and the market supply and demand relationship will improve. It is expected that in August, Chinese  stainless steel pipes  market will show a turbulent and strong operation trend. stainless steel seamless pipes Demand analysis of stainless steel seamless pipe industry 1. Export demand: stainless steel exports continue to decline and will remain low in the later period The impact of weaker overseas demand is prominent for  stainless steel pipe fittings supplier . In June, China's stainless steel exports hit a new low since March 2012. The lack of price ...