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<SPAN style= WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; COLOR: rgb(51,51,51); FONT: 14px/24px arial, 宋体, sans-serif; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px >螺旋钢管是以</SPAN><SPAN style= WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FLOAT: none; COLOR: rgb(0,0,0); FONT: 12px/18px 'sans serif', tahoma, verdana, helvetica; DISPLAY: inline !important; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px >带钢</SPAN><SPAN style= WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; COLOR: rgb(51,51,51); FONT: 14px/24px arial, 宋体, sans-serif; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px >卷板为原材料，经常温挤压成型，以自动双丝双面埋弧焊工艺焊接而成的螺旋缝钢管。</SPAN><SPAN style= WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; COLOR: rgb(229,51,51); FONT: 18px/27px 'sans serif', tahoma, verdana, helvetica; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px ></SPAN><SPAN style= WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); FONT: 12px/18px 'sans serif', tahoma, verdana, helvetica; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px ></SPAN><SPAN style= WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FLOAT: none; COLOR: rgb(0,0,0); FONT: 12px/18px 'sans serif', tahoma, verdana, helvetica; DISPLAY: inline !important; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px ></SPAN>
<DIV class=para style= WORD-WRAP: break-word; FONT-SIZE: 14px; FONT-FAMILY: arial, 宋体, sans-serif; FONT-VARIANT: normal; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); FONT-STYLE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px >承压流体输送，用螺旋缝埋弧焊钢管SY5036-2000，主要用于输送石油、天然气的管线；</DIV>
<DIV class=para style= WORD-WRAP: break-word; FONT-SIZE: 14px; FONT-FAMILY: arial, 宋体, sans-serif; FONT-VARIANT: normal; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); FONT-STYLE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px >承压流体输送用螺旋缝高频焊钢管SY5038-2000，用高频搭接焊法焊接的，用于承压流体输送的螺旋缝高频焊钢管。钢管承压能力强，塑性好，便于焊接和加工成型；</DIV>
<DIV class=para style= WORD-WRAP: break-word; FONT-SIZE: 14px; FONT-FAMILY: arial, 宋体, sans-serif; FONT-VARIANT: normal; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); FONT-STYLE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px >一般低压流体输送，用螺旋缝埋弧焊钢管SY5037-2000，采用双面自动埋弧焊或单面焊法制成的用于水、煤气、空气和蒸汽等一般低压流体输送用埋弧焊钢管。</DIV>
<DIV class=para style= WORD-WRAP: break-word; FONT-SIZE: 14px; FONT-FAMILY: arial, 宋体, sans-serif; FONT-VARIANT: normal; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); FONT-STYLE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px >螺旋钢管的常用标准一般分为:SY/T5037-2008（部标、也叫 普通流体输送管道用螺旋缝埋弧焊钢管）、GB/T9711.1-2008（国标、也叫石油天然气工业输送钢管交货技术条件**部分：A级钢管(要求严格的有GB/T9711.2 B级钢管)）、API-5L（美国石油协会、也叫管线钢管；其中分为PSL1和PSL2两个级别）、SY/T5040-2008（桩用螺旋焊缝钢管）。</DIV>
<DIV class=para style= WORD-WRAP: break-word; FONT-SIZE: 14px; FONT-FAMILY: arial, 宋体, sans-serif; FONT-VARIANT: normal; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); FONT-STYLE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px >SY/T5037-2008是石油部设标准一般都称做部标</DIV>
<DIV class=para style= WORD-WRAP: break-word; FONT-SIZE: 14px; FONT-FAMILY: arial, 宋体, sans-serif; FONT-VARIANT: normal; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); FONT-STYLE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px >GB/T9711.1-2008国家螺旋管，石油天然气工业输送钢管，A级</DIV>
<DIV class=para style= WORD-WRAP: break-word; FONT-SIZE: 14px; FONT-FAMILY: arial, 宋体, sans-serif; FONT-VARIANT: normal; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); FONT-STYLE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px >一般低压流体输送用螺旋缝高频焊钢管（SY5039-2000）是以热轧钢带卷作管坯，经常温螺旋成型，采用高频搭接焊法焊接用于一般低压流体输送用螺旋缝高频焊钢管。</DIV>
<DIV class=para style= WORD-WRAP: break-word; FONT-SIZE: 14px; FONT-FAMILY: arial, 宋体, sans-serif; FONT-VARIANT: normal; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); FONT-STYLE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px >桩用螺旋焊缝钢管（SY5040-2000）是以热轧钢带卷作管坯，经常温螺旋成型，采用双面埋弧焊接或高频焊接制成的，用于土木建筑结构、码头、桥梁等基础桩用钢管。
<DIV class=para style= WORD-WRAP: break-word >5037标准螺旋钢管也叫部标螺旋钢管。该种标准的钢管出厂前要对管体进行水压试验，以防止管体在应用的过程中漏水。只要测试合格才可以出厂。主要应用于市政工程的供排水工程及建筑钢结构用管。</DIV>
<DIV class=para style= WORD-WRAP: break-word >下面对5037螺旋钢管的屈服强度进行说明</DIV>
<DIV class=para style= WORD-WRAP: break-word >屈服强度对某些屈服现象不明显的金属材料，测定屈服点比较困难，常把产生0.2%**变形的应力定为屈服点，称为屈服强度或条件屈服极限<SPAN class=Apple-converted-space> </SPAN><BR>P0.2<BR>σ0.2=——<SPAN class=Apple-converted-space> </SPAN><BR>Fo<BR>式中P0.2——试样产生**变形为0.2%时的载荷（N）<BR>Fo——试样原横截面积（mm2）</DIV>
<DIV class=para style= WORD-WRAP: break-word >9711标准螺旋钢管也称之为国标螺旋钢管。经常使用的材质有q195L,q195硅，10%23，20%23，L245，Q345B(16Mn),Q345c,S290(X42),S360(X52),L290,L360,X60等。</DIV>
<DIV class=para style= WORD-WRAP: break-word >持久强度</DIV>
<DIV class=para style= WORD-WRAP: break-word >9711标准螺旋钢管持久强度主要是看在高温条件下，经过规定时间发生断裂时的应力称为持久强度。通常所指的持久强度，是在一定的温度条件下，试样经5到10小时后的裂纹程度。</DIV>
<DIV class=para style= WORD-WRAP: break-word >存货情况</DIV></DIV> |
