2017年4月27日(ri)，美國國際貿(mao)易委員會(USITC)投票(piao)對進(jin)口(kou)自臺灣地區和(he)韓國的焊接不(bu)銹鋼(gang)管材(welded ASTM A-312 stainless steel pipe)作出第四次反傾銷日落復審產業損害肯定性終裁：若取消對涉案產品的現行反傾銷措施，在合理可預見期間內，涉案產品的進口對美國國內產業構成的實質性損害將繼續或再度發生。根據本終裁結果，美國將繼續維持對進口自臺灣地區和韓國的焊接不銹鋼管材的反措(cuo)施(shi)不變(bian)。在(zai)該項裁定(ding)中，5名委員(yuan)投肯定(ding)票。

　　1992年12月30日，美國商務(wu)部(bu)正式開(kai)始(shi)對(dui)進口(kou)自臺灣(wan)地區和韓國的ASTM A-312不(bu)銹鋼管(guan)材征(zheng)(zheng)收反(fan)(fan)(fan)傾(qing)(qing)銷(xiao)稅(shui)(shui)。1994年(nian)(nian)(nian)(nian)2月(yue)11日(ri)(ri)(ri)(ri)(ri)，美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)商(shang)(shang)(shang)務(wu)(wu)(wu)(wu)部(bu)修改(gai)對(dui)(dui)臺(tai)灣(wan)地(di)(di)(di)區(qu)(qu)(qu)(qu)涉(she)(she)(she)(she)案(an)(an)(an)(an)產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)的反(fan)(fan)(fan)傾(qing)(qing)銷(xiao)稅(shui)(shui)。1999年(nian)(nian)(nian)(nian)7月(yue)1日(ri)(ri)(ri)(ri)(ri)，美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)商(shang)(shang)(shang)務(wu)(wu)(wu)(wu)部(bu)對(dui)(dui)臺(tai)灣(wan)地(di)(di)(di)區(qu)(qu)(qu)(qu)和(he)韓(han)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)涉(she)(she)(she)(she)案(an)(an)(an)(an)產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)啟(qi)動(dong)第(di)(di)(di)一次(ci)反(fan)(fan)(fan)傾(qing)(qing)銷(xiao)日(ri)(ri)(ri)(ri)(ri)落(luo)復審(shen)(shen)立(li)案(an)(an)(an)(an)調查(cha)(cha)。2000年(nian)(nian)(nian)(nian)2月(yue)4日(ri)(ri)(ri)(ri)(ri)，美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)商(shang)(shang)(shang)務(wu)(wu)(wu)(wu)部(bu)對(dui)(dui)臺(tai)灣(wan)地(di)(di)(di)區(qu)(qu)(qu)(qu)和(he)韓(han)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)涉(she)(she)(she)(she)案(an)(an)(an)(an)產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)作出反(fan)(fan)(fan)傾(qing)(qing)銷(xiao)快速(su)日(ri)(ri)(ri)(ri)(ri)落(luo)復審(shen)(shen)肯定(ding)性(xing)(xing)終裁(cai)。2000年(nian)(nian)(nian)(nian)10月(yue)16日(ri)(ri)(ri)(ri)(ri)，美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)商(shang)(shang)(shang)務(wu)(wu)(wu)(wu)部(bu)第(di)(di)(di)一次(ci)延(yan)(yan)長(chang)對(dui)(dui)臺(tai)灣(wan)地(di)(di)(di)區(qu)(qu)(qu)(qu)和(he)韓(han)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)涉(she)(she)(she)(she)案(an)(an)(an)(an)產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)反(fan)(fan)(fan)傾(qing)(qing)銷(xiao)征(zheng)(zheng)稅(shui)(shui)令。2005年(nian)(nian)(nian)(nian)9月(yue)1日(ri)(ri)(ri)(ri)(ri)，美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)商(shang)(shang)(shang)務(wu)(wu)(wu)(wu)部(bu)對(dui)(dui)臺(tai)灣(wan)地(di)(di)(di)區(qu)(qu)(qu)(qu)和(he)韓(han)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)涉(she)(she)(she)(she)案(an)(an)(an)(an)產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)啟(qi)動(dong)第(di)(di)(di)二次(ci)反(fan)(fan)(fan)傾(qing)(qing)銷(xiao)日(ri)(ri)(ri)(ri)(ri)落(luo)復審(shen)(shen)立(li)案(an)(an)(an)(an)調查(cha)(cha)。2006年(nian)(nian)(nian)(nian)8月(yue)28日(ri)(ri)(ri)(ri)(ri)，美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)商(shang)(shang)(shang)務(wu)(wu)(wu)(wu)部(bu)第(di)(di)(di)二次(ci)延(yan)(yan)長(chang)對(dui)(dui)臺(tai)灣(wan)地(di)(di)(di)區(qu)(qu)(qu)(qu)和(he)韓(han)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)涉(she)(she)(she)(she)案(an)(an)(an)(an)產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)反(fan)(fan)(fan)傾(qing)(qing)銷(xiao)征(zheng)(zheng)稅(shui)(shui)令。2011年(nian)(nian)(nian)(nian)7月(yue)1日(ri)(ri)(ri)(ri)(ri)，美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)商(shang)(shang)(shang)務(wu)(wu)(wu)(wu)部(bu)對(dui)(dui)臺(tai)灣(wan)地(di)(di)(di)區(qu)(qu)(qu)(qu)和(he)韓(han)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)涉(she)(she)(she)(she)案(an)(an)(an)(an)產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)啟(qi)動(dong)第(di)(di)(di)三(san)(san)次(ci)反(fan)(fan)(fan)傾(qing)(qing)銷(xiao)日(ri)(ri)(ri)(ri)(ri)落(luo)復審(shen)(shen)立(li)案(an)(an)(an)(an)調查(cha)(cha)。2011年(nian)(nian)(nian)(nian)11月(yue)2日(ri)(ri)(ri)(ri)(ri)，美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)商(shang)(shang)(shang)務(wu)(wu)(wu)(wu)部(bu)對(dui)(dui)本案(an)(an)(an)(an)作出第(di)(di)(di)三(san)(san)次(ci)反(fan)(fan)(fan)傾(qing)(qing)銷(xiao)快速(su)日(ri)(ri)(ri)(ri)(ri)落(luo)復審(shen)(shen)肯定(ding)性(xing)(xing)終裁(cai)。2011年(nian)(nian)(nian)(nian)12月(yue)19日(ri)(ri)(ri)(ri)(ri)，美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)商(shang)(shang)(shang)務(wu)(wu)(wu)(wu)部(bu)第(di)(di)(di)三(san)(san)次(ci)延(yan)(yan)長(chang)對(dui)(dui)臺(tai)灣(wan)地(di)(di)(di)區(qu)(qu)(qu)(qu)和(he)韓(han)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)涉(she)(she)(she)(she)案(an)(an)(an)(an)產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)反(fan)(fan)(fan)傾(qing)(qing)銷(xiao)征(zheng)(zheng)稅(shui)(shui)令。2016年(nian)(nian)(nian)(nian)11月(yue)1日(ri)(ri)(ri)(ri)(ri)，美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)商(shang)(shang)(shang)務(wu)(wu)(wu)(wu)部(bu)對(dui)(dui)臺(tai)灣(wan)地(di)(di)(di)區(qu)(qu)(qu)(qu)和(he)韓(han)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)涉(she)(she)(she)(she)案(an)(an)(an)(an)產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)啟(qi)動(dong)第(di)(di)(di)四次(ci)反(fan)(fan)(fan)傾(qing)(qing)銷(xiao)日(ri)(ri)(ri)(ri)(ri)落(luo)復審(shen)(shen)立(li)案(an)(an)(an)(an)調查(cha)(cha)。2017年(nian)(nian)(nian)(nian)3月(yue)7日(ri)(ri)(ri)(ri)(ri)，美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)商(shang)(shang)(shang)務(wu)(wu)(wu)(wu)部(bu)發布公告，對(dui)(dui)進(jin)口自臺(tai)灣(wan)地(di)(di)(di)區(qu)(qu)(qu)(qu)和(he)韓(han)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)的ASTM A-312焊(han)接不(bu)銹鋼管(guan)材(cai)作出第(di)(di)(di)四次(ci)反(fan)(fan)(fan)傾(qing)(qing)銷(xiao)快速(su)日(ri)(ri)(ri)(ri)(ri)落(luo)復審(shen)(shen)終裁(cai)。