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2013年9月,内蒙古包钢钢联股份有限公司(简称包钢)成功交付BT90SS钢级Φ73.02 mm×5.51 mm油管148.026 t。包钢设计开发的BT90SS钢级平端非加厚油管,采用耐H2S腐蚀的Cr、Mo元素,添加复合稀土元素,严格控制P、S含量,提高钢的纯净度,采用LF炉精炼,VD深真空处理,使产品达到较好的强韧性匹配效果。2013年7月在Φ159 mm PQF连轧管机组上试制了Φ73.02 mm×5.51 mm规格平端非加厚油管及其接箍毛坯,其后经应力腐蚀开裂(SSC)试验合格,各项性能指标均符合API Spec 5CT标准及技术协议要求。该产品的成功生产,标志着包钢的抗腐蚀油井管生产水平又迈上了一个新台阶。
In September 2013, Inner Mongolia Baotou Steel & Steel Joint Stock Co., Ltd. (hereinafter referred to as Baotou Steel) successfully delivered 148.026 t of tubing of Φ73.02 mm × 5.51 mm grade BT90SS. Baotou Steel designed and developed BT90SS steel grade flat end non-thickened tubing, the use of anti-H2S corrosion of Cr, Mo elements, the addition of rare earth elements, strict control of P, S content, improve the purity of steel, the LF furnace refining, VD deep vacuum Processing, so that products achieve better toughness matching effect. In July 2013, a Φ73.02 mm × 5.51 mm flat-out non-thickened tubing and its coupling blank were produced on a Φ159 mm PQF pipe rolling mill unit and subsequently passed the stress corrosion cracking (SSC) test. All the performance indexes Are in line with API Spec 5CT standards and technical agreements. The successful production of this product marks a new level of production of anti-corrosion oil well pipe of Baotou Steel.