首页>
外国专利>
HIGH-STRENGTH WELDED STEEL PIPE EXCELLENT IN HYDROGEN EMBRITTLEMENT CRACKING RESISTANCE OF WELD METAL AND PROCESS FOR PRODUCING THE SAME
HIGH-STRENGTH WELDED STEEL PIPE EXCELLENT IN HYDROGEN EMBRITTLEMENT CRACKING RESISTANCE OF WELD METAL AND PROCESS FOR PRODUCING THE SAME
展开▼
机译:高强度焊接钢管的卓越性能,其氢脆性和抗金属腐蚀性能及制备方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention provides a high strength welded steel pipe superior in weld zone embrittlement crack characteristics and a method of production of the same, that is, a method of production of a welded steel pipe superior in hydrogen embrittlement cracking resistance of weld metal characterized by seam welding from the inner and outer surfaces by a tensile strength of 850 MPa or more, then expanding or reducing the size of the pipe for correction, which method of production of welded steel pipe characterized in that the hydrogen concentration of the preceding weld metal is 0.2 cc or less per 100 g at ordinary temperature.
展开▼