至今用于油井的耐腐蚀钢管中，含铬13％的只限于在150t左右的温度条件下使用，超过这一温度必须使用含铬22％的双层不锈钢管，但是后者的价格要贵1倍，因此它的使用也受到限制。日本一家公司生产了一种新型的耐腐蚀钢管，它在200℃的温度下也具有良好的耐腐蚀性，而成本只比13 To date, corrosion-resistant steel pipes used in oil wells have a 13% chromium content and are only used at temperatures around 150t. Beyond this temperature, a double stainless steel tube containing 22% chromium has to be used, but the latter is more expensive Times, so its use is also limited. A Japanese company has produced a new type of corrosion-resistant steel pipe, which also has good corrosion resistance at a temperature of 200 ° C, at a cost of only 13