摘要：<p style="text-align:left;"> <span style="font-family:宋體;font-size:10.5pt;"><span>西安</span></span><span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;"><span>不銹鋼角鋼的用途</span></span><span style="font-family:宋體;font-size:10.5pt;"><span>及執(zhí)行標準</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;"><span>1. </span><span>種類及規(guī)格</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;"><span>主要分為等邊不銹鋼角鋼和不等邊不銹鋼角鋼兩類，其中不等邊不銹鋼角鋼又可分為不等邊等厚及不等邊不等厚兩種。</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;"><span>不銹鋼角鋼的規(guī)格用邊長和邊厚的尺寸表示。目前國產(chǎn)不銹鋼角鋼規(guī)格為</span><span>2—20</span><span>號，以邊長的厘米數(shù)為號數(shù)，同一號不銹鋼角鋼常有</span><span>2—7</span><span>種不同的邊厚。進口不銹鋼角鋼標明兩邊的實際尺寸及邊厚并注明相關(guān)標準。一般邊長</span><span>12.5cm</span><span>以上的為大型不銹鋼角鋼，</span><span>12.5cm—5cm</span><span>之間的為中型不銹鋼角鋼，邊長</span><span>5cm</span><span>以下的為小型不銹鋼角鋼。</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;">2. <span>進出口情況</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;"><span>我國進口、出口不銹鋼角鋼各有一定批量，主要從日本、西歐進口。出口輸往地區(qū)主要為港澳、東南亞、拉美及阿拉伯國家等。出口生產(chǎn)企業(yè)主要為江蘇，遼寧、河北、北京、上海、天津等省市的鋼鐵廠（軋鋼廠）。</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;"><span>進口不銹鋼角鋼品種多為大型、小型不銹鋼角鋼及特殊形狀不銹鋼角鋼，出口品種多為中型不銹鋼角鋼如</span>6<span>號、</span><span>7</span><span>號等。</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;">3. <span>外觀質(zhì)量要求</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;"><span>不銹鋼角鋼的表面質(zhì)量在標準中有規(guī)定，一般要求不得存在使用上有害的缺陷，如分層、結(jié)疤、裂縫等。</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;"><span>不銹鋼角鋼幾何形狀偏差的允許范圍在標準中也有規(guī)定，一般包括彎曲度、邊寬、邊厚、頂角、理論重量等項，并規(guī)定不銹鋼角鋼不得有顯著的扭轉(zhuǎn)。</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;">4.<span>化學(xué)成分檢驗</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;"><span>（</span>1<span>）成分指標：不銹鋼角鋼的化學(xué)成分屬一般結(jié)構(gòu)用軋制鋼材系列，主要檢驗指標為</span><span>C</span><span>、</span><span>Mn</span><span>、</span><span>P</span><span>、</span><span>S</span><span>四項。根據(jù)牌號不同，含量各有差別，大致范圍為</span><span>C&lt;0.22%</span><span>、</span><span>Mn</span><span>：</span><span>0.30—0.65%</span><span>、</span><span>P&lt;0.060%</span><span>、</span><span>S&lt;0.060%</span><span>。</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;"><span>（</span>2<span>）檢驗方法：檢測上述化學(xué)成分時，常用的標準檢驗方法有</span><span>GB223</span><span>、</span><span>JISG1211—1215</span><span>、</span><span>BS1837</span><span>、</span><span>BS</span><span>手冊</span><span>19</span><span>、</span><span>ГОСТ22536</span><span>等。</span></span> </p> <p style="text-align:left;"> <span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;">5.<span>常用產(chǎn)品、規(guī)格標準</span></span><span style="font-family:宋體;font-size:10.5pt;"><span>：</span></span><span style="font-family:&quot;Times New Roman&quot;;font-size:10.5pt;">GB/T2101—89<span>（型鋼驗收、包裝、標志及質(zhì)量證明書的一般規(guī)定）</span></span> </p> <p style="text-align:left;text-indent:21pt;"> <span style="font-family:宋體;font-size:10.5pt;">&nbsp;</span> </p>