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Sumitomo Metal Industries, Ltd., located in Osaka and established in 1897, continues to operate with corporate strategies to keep pace with changing times and maintain the momentum of its progress in the steel industry as well as the other businesses in which the Company engages. Sumitomo Metal Industries was the parent company of Sumitomo Sitix until Sumitomo Sitix was merged with the silicon division on Mitsubishi to create SUMCO (Sumitomo Mitsubishi). SUMCO is currently the second largest silicon wafer manufacturer.

Main Products:
1 Flat Rolled Products: Sumitomo Metals' Kashima and Wakayama Steel Works are world-class producers of HR/CR steel sheets, coated steel sheets, electromagnetic steel sheets, and other steel products.

2 Construction Materials: In civil engineering, Sumitomo is developing a succession of new steel materials for use in foundations and earth-retaining products in advance of other players in the industry. The Company has put together a powerful range of products, SM-J pile, STBC pile, and SM Hi-Drain pile.

3 Titanium: As titanium displays superior properties to other metal materials i.e. light, strong, human-friendly and corrosion-resistant, it has been recognized increasingly effective and useful especially for severer environment.

4 Tubes and Pipes: In the seamless pipe business, the Company's Wakayama Steel Works is equipped with a brand-new and highly advanced medium-bore seamless mill. The Company's UOE wide-bore welded pipes have been deployed all over the world in oil and natural gas pipelines, and major orders have been received in connection with a new Russia-Turkey pipeline project.

In the domestic boiler tube market, Sumitomo Metals has approximately 80% of the market for the main tubes of thermal power generation plants and for boiler tubes used in large-scale industrial projects.

5 Railway, Automotive & Machinery Parts: The Railway, automotive, & Machinery Parts Company offers highly appreciated and longtime cultivated technologies in the area of traffic and transportation equipments where the highest reliability and safety are required. It supplys almost 100% of the wheels and axles for JR and private railway companies in Japan.

6 Engineering: Steel bridges and related products, segment and systems buildings, etc.

7 Silicon: Sumitomo Metal Industries, Ltd. and Mitsubishi Materials Corporation merged and integrated their silicon wafers business, including 300mm wafers and wafer-related quartz products operations, in Japan as well as overseas.

住友金属工业公司创立于１８９７年，１９３５年由原住友伸铜管钢公司与住友制钢公司合并为现今的住友金属工业公司（以下简称“住友”)住友是日本第四大钢铁企业，１９９８年粗钢产量为９３３万ｔ，居世界钢铁企业钢产量排序的第１５位。住友在确保其作为主要钢铁生产企业地位的同时，不断拓宽业务领域，业务范围已涵盖钢铁生产、有色金属与其他材料、原材料及燃料和电力、贸易与运输、工厂工程、系统工程和新业务领域７个方面。新业务领域涉及高级材料、半导体、电子元件、医药与生物技术等。

主要机构
   住友金属工业公司的钢铁生产与加工部分仍是其主要业务，该部分的销售额占公司总销售额的８０％左右。
   住友下属的钢铁厂主要有鹿岛厂（生产薄钢板、中厚板和不锈钢薄板人 和歌山厂（主要生产钢管人 小仓厂（生产棒线材,大皈厂（专门从事轧制零部件、铸钢件和锻钢件的生产制造）、尼崎厂（主要生产能源工业及相关工业用管材）和直江津厂（生产不锈钢薄板、中厚板、棒材和角钢，从生铁和粗钢产量来看，鹿岛厂约占全公司总产量的５５％，和歌山厂约占３０％，小仓及直江津厂约占１０％。

主要产品及生产能力
   大型型材９６万ｔ 中型型材８２万ｔ 棒线材７５万ｔ
   厚板１９８万ｔ 热轧带钢８００万ｔ 冷轧带钢５００万ｔ
   镀锌钢板２００万ｔ 车轮轮箍２８万ｔ 锻造车轴１５万支
   无缝钢管１９０万ｔ 电焊钢管９０万ｔ 大口径钢管５８万ｔ
   焊接H型钢１８万ｔ

主要生产设备
   （１）炼焦：６座焦炉。
   （2）烧结：５台烧结机。
   （３）炼铁：６座高炉，其中１８５０ｍ’、２１５０ｍ’、４８００ｍ’及５０５０ｍ
 高炉各１座，２７００ｍ‘高炉两座。年产能力１６１０万ｔ；２套直接还原铁设备，年产能力总计为３０•６万ｔ。
  （４）炼钢：１５座转炉，其中３座７０ｔ、７座１６０ｔ、５座２５０ｔ７座电炉，其中 １座 ３ｔ、２座 ｓｔ、２座 １５ｔ、ｌ座 ３０ｔ、２座 ８０ｔ年产能力６９•４万ｔ。
  （５）精炼：
   ２座钢包炉，其中１座为７０ｔ，ｌ座为６０ｔ；４套ＲＨ真空脱气装置，其中２７０ｔ和１６０ｔＲＨ装置各２套；１套８０ｔＤＨ真空脱气装置；４套 ＶＯＤ装置，分别为 １５ｔ、２０ｔ、３０ｔ和 ８０ｔ；２套ＡＯＤ ｔ氧脱碳装置，其中８０ｔ和１０ｔＡＯＤ各１套７０TVＡＤ真空电弧脱气装置；１套ｓｔ电渣重熔装置。
  （６）连铸：
   ３套板坯和大方坯连铸机，年产能力２７１．２万ｔ；ｌ套双流型板坯和圆坯连铸机；３套板坯连铸机，年产能力５３６万ｔ；１套不锈钢板坯连铸机，年产能力３５．８万ｔ；ｌ套薄板坯连铸机，年产能力１００万ｔ；１套圆坯连铸机，年产能力５万ｔ；２套大方坯连铸机，年产能力１８１万
  （７）轧钢：
   ２套方坯初轧机，年产能力７３４万ｔ；２套方坯初轧和钢坯轧机，年产能力２７３万ｔ；２套中厚板轧机，年产能力  １９８万  ｔ；１套大型型钢轧机，年产能力９６万ｔ；ｌ套单线２１机架连续式中型型钢轧机，年产能力８０万ｔ；１套小型型钢和棒材轧机，年产能力２．４万ｔ；卫套４线２７机架连续式线材轧机，年产能力７５万ｔ；２套宽带钢热轧机，年产能力８００万ｔ；７套带钢冷轧机（含１套不锈钢冷轧机八年产能力６７９万ｔ；２套带钢平整机，其中１７２７ｍｍ和１４２２ｍｍ平整机各１套；５套无缝钢管轧机，年产能力 ２５５万 ｔ；４套电鹏ｇＬ＃ 机，中口或Ｊ口路２套，护故６４万ｔ；ｌ套车轮轧机和１套轮箍轧机，年产能力２７．６万ｔ；１套锻压机、锻锤和精密锻造机。
  （8）覆层设备：
   ４条热浸镀锌作业线，年产能力１３０．８万ｔ；４条电镀锌作业线，年产能力８４万ｔ；１条彩色涂层作业线，年产能力１４．４万ｔ。
  （９）其他：
   １条焊接Ｈ型钢作业线，年产能力１８万ｔ；２条带钢连续退火作业线；３套冷拔无缝管轧机，年产能力９．６万t