Goods produced by manufacturers of certain commodities will not immediately enter personal consumption or production consumption through the circulation field, and there will always be some storage in the production or circulation fields.

 The top product in the storage state is called inventory. Stainless steel pipe inventory is generally divided into two types, one is production inventory, which is the reserve for stainless steel enterprises for normal production; the other is circulation inventory, which is the reserve for circulation enterprises to carry out normal circulation. The impact of inventory on the price of stainless steel pipes is also important. Under normal circumstances, when the price of stainless steel pipe drops, increasing the inventory when the output is constant is equivalent to reducing the supply to the final consumer of stainless steel pipe, causing the price of stainless steel pipe to rise, the market to rebound, and reducing the inventory when the price of stainless steel pipe rises. In order to increase the supply of the final consumer, the price of stainless steel pipes has dropped and the market has stabilized. However, the reality is that stainless steel pipe stocks are generally accompanied by speculation. When the price rises, the circulation enterprises and the downstream enterprises of stainless steel pipes will increase the inventory, and a large number of stainless steel pipe products will be purchased, so that the price of steel pipes will rise faster, when the price rises. When it reaches a certain level, resell the inventory to earn a larger spread. When the price of stainless steel pipes drops, in order to reduce the possible further price cuts, plus the cost of storage, the company will instead sell the stocks, so that the price that has been falling will fall faster.

From the end of 2006 to May 2007, the price of nickel has risen sharply. The stainless steel pipe supplier has increased the inventory of nickel and stainless steel pipes in stock, on the one hand to prevent the further increase of nickel prices to reserve raw materials; on the other hand, the price of stainless steel pipes is rising. Sell ​​to a higher level. However, in the following months, the nickel price quickly dive, so that the stainless steel pipe supplier "flashed", such as China Baosteel Group, the nickel used is mostly bought at a high price one or two months ago, while the nickel price The decline caused the price of stainless steel pipes to drop, resulting in a large difference between the ex-factory price of the enterprise and the market transaction price. The traders' enthusiasm for trading was poor, and then led to higher inventory, which directly affected the normal operation of the entire stainless steel pipe market. It can be seen that the inventory has a very important impact on the stainless steel pipe market. How to correctly judge and select the quantity and timing of the stainless steel pipe production and sales enterprises plays a vital role in its survival and development.