专利名称：Exhaust manifold发明人：Masahide Ike,Kunio Kawai申请号：US07/315861申请日：19890227公开号：US04924967A公开日：19900515
摘要：An exhaust manifold is, which includes a plurality of steel members having thesame metallic crystal structure in a range of working temperature, which are jointed witheach other by permanent welding and spot welding at different places, wherein materialfor the spot welding is a material having a different metallic crystal structure than that ofthe steel members.
申请人：NISSAN MOTOR COMPANY, LTD.
代理机构：Lowe, Price, Leblanc, Becker & Shur
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