螺旋钢管螺旋钢管价格螺旋钢管规格图

 <*n style="text-indent: 2em; font-family: 宋体;">　<*n style="font-size:18.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">新年来临<*n style="font-size:18.0pt"> <*n style="font-size:18.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">厂家促销<*n style="font-size:18.0pt"> <*n style="font-size:18.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">沧州诚源管业有限公司给大家拜个早年<*n lang="EN-US" style="text-indent: 2em;"><*n lang="EN-US" style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">螺旋焊接钢管<*n style="text-indent: 2em; font-family: 宋体;">常见材质：<*n lang="EN-US" style="text-indent: 2em;">Q235A<*n style="text-indent: 2em; font-family: 宋体;">，<*n lang="EN-US" style="text-indent: 2em;">Q23b,0C*<*n style="text-indent: 2em; font-family: 宋体;">、<*n lang="EN-US" style="text-indent: 2em;">1Cr17<*n style="text-indent: 2em; font-family: 宋体;">、<*n lang="EN-US" style="text-indent: 2em;">00Cr19Ni11<*n style="text-indent: 2em; font-family: 宋体;">、<*n lang="EN-US" style="text-indent: 2em;">1Cr18Ni9<*n style="text-indent: 2em; font-family: 宋体;">、<*n lang="EN-US" style="text-indent: 2em;">0Cr18Ni11Nb. Q345 L245 L290 X42 X46 X70 X80

<*n style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">　　螺旋焊接钢管标准：<*n lang="EN-US">GB/T9711.1-1997<*n style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">（*、也叫石油*工业输送钢管交货技术条件****部分：<*n lang="EN-US">A<*n style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">级钢管<*n lang="EN-US">(<*n style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">到目前要求严格的有<*n lang="EN-US">GB/T9711.2 B<*n style="font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">级钢管<*n lang="EN-US">)<*n style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">）、<*n lang="EN-US">API-5L<*n style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">（美国石油协会、也叫管线钢管；其中分为<*n lang="EN-US">PSL1<*n style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">和<*n lang="EN-US">PSL2<*n style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">两个级别）、<*n lang="EN-US">SY/T5040-92<*n style="font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">（桩用螺旋缝埋弧焊钢管）<*n lang="EN-US">
<*n style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">螺旋焊接钢管生产工艺：<*n lang="EN-US">
<*n style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">　　螺旋焊接钢管生产工艺简单，生产*，成本低，发展较快。螺旋焊接钢管的强度一般比直缝焊管高，能用较窄的坯料生产管径较大的焊管，还可以用同样宽度的坯料生产管径不同的焊管。但是与相同长度的直缝管相比，焊缝长度增加<*n lang="EN-US">30~100%<*n style="font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">，而且生产速度较低。因此，较小口径的焊管大都采用直缝焊，大口径焊管则大多采用螺旋焊