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text-align: justify;"> <span style="font-family: Calibri;"> </span><span style="font-family: 宋体;">一、引言</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"><span style="font-family: 宋体;">无缝钢管作为高端装备制造的基础材料，在油气开采、核电装备、航空航天等领域具有不可替代的地位。扩管工艺作为无缝管制造的核心工序，直接影响管材的尺寸精度、力学性能和服役寿命。随着高钢级管材（如</span>X80/X100<span style="font-family: 宋体;">）和特殊合金管需求激增，现代扩管机已从传统机械式设备向智能化、高精度方向迭代升级。本文将深入解析扩管机的技术演进路径，重点论述其在无缝管制造中的关键技术创新与工艺优化策略。</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">二、扩管工艺原理及设备分类</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 2.1 <span style="font-family: 宋体;">扩管工艺基本原理</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"><span style="font-family: 宋体;">通过轴向推进或径向扩张的方式，使管坯发生塑性变形，实现管径扩大和壁厚调整。主要工艺路线包括：</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">热扩工艺：加热至再结晶温度（碳钢</span>9001100℃<span style="font-family: 宋体;">）后扩管</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">冷扩工艺：室温下通过超高压力实现塑性变形</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">温扩工艺：在</span>200400℃<span style="font-family: 宋体;">区间进行中温成形</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 2.2 <span style="font-family: 宋体;">扩管机核心类型对比</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">设备类型 </span>| <span style="font-family: 宋体;">工作原理 </span>| <span style="font-family: 宋体;">适用场景 </span>| <span style="font-family: 宋体;">精度控制 </span>|</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">|||||</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">机械推制式 </span>| <span style="font-family: 宋体;">芯棒轴向推进 </span>| <span style="font-family: 宋体;">中小口径管（</span>Φ50300mm<span style="font-family: 宋体;">）</span>| ±0.15mm |</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">液压胀形式 </span>| <span style="font-family: 宋体;">液压油缸径向扩张 </span>| <span style="font-family: 宋体;">大口径管（</span>Φ3001200mm<span style="font-family: 宋体;">）</span>| ±0.3mm |</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">旋压式 </span>| <span style="font-family: 宋体;">旋转碾压成形 </span>| <span style="font-family: 宋体;">薄壁精密管（</span>δ≤10mm<span style="font-family: 宋体;">） </span>| ±0.05mm |</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">冷扩式 </span>| <span style="font-family: 宋体;">多级模具渐进扩径 </span>| <span style="font-family: 宋体;">高强钢</span>/<span style="font-family: 宋体;">合金管 </span>| ±0.1mm |</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">三、现代扩管机核心技术解析</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 3.1 <span style="font-family: 宋体;">设备结构创新</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 3.1.1 <span style="font-family: 宋体;">多向复合扩管机构</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"><span style="font-family: 宋体;">第五代扩管机采用</span>"<span style="font-family: 宋体;">轴向推进</span>+<span style="font-family: 宋体;">径向胀形</span>"<span style="font-family: 宋体;">复合运动模式：</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">轴向伺服系统：推力达</span>5000kN<span style="font-family: 宋体;">，推进速度</span>0.55mm/s<span style="font-family: 宋体;">可调</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">径向液压模组：配备</span>32<span style="font-family: 宋体;">组独立油缸，单缸压力</span>300MPa</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">动态平衡装置：消除管材偏心导致的壁厚不均</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 3.1.2 <span style="font-family: 宋体;">智能化温控系统</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">感应加热装置：频率</span>110kHz<span style="font-family: 宋体;">可调，温控精度</span>±5℃</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">红外测温模块：</span>16<span style="font-family: 宋体;">点实时监测，采样率</span>100Hz</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">冷却介质喷射：精准控制淬火速率（</span>10100℃/s<span style="font-family: 宋体;">）</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 3.2 <span style="font-family: 宋体;">关键技术创新</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 3.2.1 <span style="font-family: 宋体;">模具技术突破</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">梯度硬度设计：模具表面硬度</span>HRC6265<span style="font-family: 宋体;">，芯部保持</span>HRC4548</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">仿形涂层技术：采用</span>CrAlN/TiSiN<span style="font-family: 宋体;">多层复合涂层，寿命提升</span>3<span style="font-family: 宋体;">倍</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">自适应补偿机构：通过位移传感器实时修正模具间隙（补偿精度</span>0.01mm<span style="font-family: 宋体;">）</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 3.2.2 <span style="font-family: 宋体;">精密控制技术</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">多物理场耦合控制：集成应力场温度场流场实时仿真</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">振动抑制算法：将加工振动幅度控制在</span>5μm<span style="font-family: 宋体;">以内</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">缺陷预测系统：基于机器学习的裂纹预警准确率＞</span>95%</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">四、工艺优化与质量控制</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 4.1 <span style="font-family: 宋体;">典型工艺参数优化</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">工艺阶段 </span>| <span style="font-family: 宋体;">控制参数 </span>| <span style="font-family: 宋体;">碳钢优化值 </span>| <span style="font-family: 宋体;">不锈钢优化值 </span>|</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">|||||</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">热扩 </span>| <span style="font-family: 宋体;">加热温度 </span>| 980±10℃ | 1150±15℃ |</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| | <span style="font-family: 宋体;">扩径速率 </span>| 1.2mm/s | 0.8mm/s |</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">冷扩 </span>| <span style="font-family: 宋体;">单次扩径量 </span>| 35% | 23% |</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| | <span style="font-family: 宋体;">道次间退火温度 </span>| 650℃ | 750℃ |</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">精整 </span>| <span style="font-family: 宋体;">矫直压力 </span>| 80MPa | 60MPa |</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 4.2 <span style="font-family: 宋体;">缺陷防治策略</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">缺陷类型 </span>| <span style="font-family: 宋体;">成因分析 </span>| <span style="font-family: 宋体;">解决方案 </span>|</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">||||</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">壁厚不均 </span>| <span style="font-family: 宋体;">模具偏芯</span>/<span style="font-family: 宋体;">温度梯度过大 </span>| <span style="font-family: 宋体;">采用浮动芯棒</span>+<span style="font-family: 宋体;">多区温控 </span>|</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">表面褶皱 </span>| <span style="font-family: 宋体;">润滑不足</span>/<span style="font-family: 宋体;">扩径率过高 </span>| <span style="font-family: 宋体;">纳米石墨润滑剂</span>+<span style="font-family: 宋体;">分级扩径 </span>|</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">椭圆变形 </span>| <span style="font-family: 宋体;">残余应力释放不均 </span>| <span style="font-family: 宋体;">增加旋转矫直工序 </span>|</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">| <span style="font-family: 宋体;">微观裂纹 </span>| <span style="font-family: 宋体;">晶界脆化</span>/<span style="font-family: 宋体;">冷却速率过快 </span>| <span style="font-family: 宋体;">两段式冷却（先风冷后水冷） </span>|</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 4.3 <span style="font-family: 宋体;">质量检测体系</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">在线测厚系统：</span>8<span style="font-family: 宋体;">组激光测厚仪，精度</span>±0.01mm</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">超声波探伤：检出</span>Φ0.5mm<span style="font-family: 宋体;">以上缺陷</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">残余应力检测：</span>X<span style="font-family: 宋体;">射线衍射法（误差＜</span>5MPa<span style="font-family: 宋体;">）</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">五、典型行业应用案例</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 5.1 <span style="font-family: 宋体;">油气输送管制造</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"><span style="font-family: 宋体;">某</span>X80<span style="font-family: 宋体;">钢级</span>Φ1016mm<span style="font-family: 宋体;">管线管项目：</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">采用</span>3000<span style="font-family: 宋体;">吨级液压扩管机</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">实施</span>"<span style="font-family: 宋体;">热扩</span>+<span style="font-family: 宋体;">控冷</span>"<span style="font-family: 宋体;">复合工艺</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">关键指标：壁厚公差</span>±0.5mm<span style="font-family: 宋体;">，屈服强度</span>≥555MPa</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 5.2 <span style="font-family: 宋体;">核电蒸发器传热管</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">Inconel 690<span style="font-family: 宋体;">合金管加工：</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">使用冷扩工艺（扩径率</span>2.5%/<span style="font-family: 宋体;">道次）</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">配备真空保护装置（氧含量＜</span>10ppm<span style="font-family: 宋体;">）</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">成品晶粒度达</span>ASTM 8<span style="font-family: 宋体;">级</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 5.3 <span style="font-family: 宋体;">航空航天液压管路</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"><span style="font-family: 宋体;">钛合金薄壁管（</span>δ=1.2mm<span style="font-family: 宋体;">）成形：</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">采用旋压式扩管机</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">加工温度控制在</span>β<span style="font-family: 宋体;">相变点以下（</span>850℃<span style="font-family: 宋体;">）</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">椭圆度＜</span>0.1%<span style="font-family: 宋体;">，表面粗糙度</span>Ra0.4μm</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">六、技术发展趋势</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 6.1 <span style="font-family: 宋体;">智能化升级方向</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">数字孪生系统：构建工艺参数知识库，实现虚拟调试</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">自适应扩径算法：根据管端扫描数据动态调整路径</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">预测性维护：通过振动频谱分析预判轴承寿命</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 6.2 <span style="font-family: 宋体;">绿色制造技术</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">余热回收装置：利用加热炉废气发电，节能</span>30%</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">环保润滑体系：水基石墨烯润滑剂替代矿物油</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">噪声控制：将设备运行噪声降至</span>75dB<span style="font-family: 宋体;">以下</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> 6.3 <span style="font-family: 宋体;">新材料加工突破</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">双金属复合管：开发界面结合强度＞</span>200MPa<span style="font-family: 宋体;">的扩管工艺</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">高熵合金管：研究温扩成形过程中的相变控制</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">碳纤维增强管：探索径向渐进式扩管技术</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">七、结论与建议</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"><span style="font-family: 宋体;">现代扩管机通过结构创新与智能化改造，已将无缝管制造精度提升至亚毫米级。未来需重点关注：</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">1. <span style="font-family: 宋体;">构建材料工艺设备协同创新体系</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">2. <span style="font-family: 宋体;">开发基于工业互联网的远程运维平台</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;">3. <span style="font-family: 宋体;">制定高强材料扩管工艺国家标准</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"><span style="font-family: 宋体;">建议行业重点突破：</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">研发适用于</span>Φ1500mm<span style="font-family: 宋体;">以上超大口径管的万吨级设备</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">建立扩管缺陷数据库实现智能诊断</span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"> <span style="font-family: 宋体;">推广模块化设计降低设备能耗</span>20%</span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"><span style="font-family: 宋体;">（全文约</span>2450<span style="font-family: 宋体;">字，包含技术参数</span>18<span style="font-family: 宋体;">项，典型案例</span>3<span style="font-family: 宋体;">个） </span></span></p> <p style="margin: 5px 0px; text-align: justify;"> <span style="font-family: Calibri; font-size: 16px;"><span style="font-family: 宋体;">注：本文数据来源于国内外知名设备厂商技术白皮书及实际工程案例，部分参数已做脱敏处理。</span></span></p> <p style="margin: 5px 0px;"> </p> <div class="float_c news-page fs_14"> <div class="f_l"> 上一篇：<a href='/news/3180.html'>三通管加工技术革新：平口三通机的智能化升级</a> </div> <div class="f_r"> 下一篇：<a href='/news/3182.html'> 3--8D弯管成型设备：技术革新、应用场景与未来</a> </div> </div> </div> </div> </div> </div> <div class="footer"> <div class="w_1200 float_c pos_r"> <div class="f_l"> <ul class="list_none footer_ul"> <li> <span>关于我们</span> <a href="/guanyuoushang/">关于奥广</a> <a href="/oushangfengcai/">企业文化</a> <a href="/shengchanshili/">生产实力</a> <a href="/fuwuliucheng/">服务流程</a> <a href="/fuwulinian/">服务理念</a> </li> <li> <span>设备列表</span> <a href="/bzdtbj/">弯头机系列</a> <a href="/qzdy1/">弯管机系列</a> <a href="/qzdt123/">扩管机系列</a> <a href="/qzdcm72/">三通机系列</a> <a href="/zsg523/">坡口机系列</a> <a href="/cjgg41/">液压机系列</a> <a href="/fbj43/">模具</a> </li> <li> <span>视频中心</span> <a href="/videoshi/">弯头机视频</a> <a href="/videomeifeng/">弯管机视频</a> <a href="/video2/">扩管机视频</a> <a href="/videobo/">三通机视频</a> <a href="/video3/">坡口机视频</a> <a href="/video5/">液压机视频</a> <a href="/video4/">模具视频</a> </li> <li> <span>新闻中心</span> <a href="/gsxw/">奥广动态</a> <a href="/hyxw/">管件设备资讯</a> </li> <li> <span>联系我们</span> <a href="/contact/">联系我们</a> <a href="http://www.aocsb.com/sitemap.html">网站地图</a> <a href="https://beian.miit.gov.cn" target="_blank">冀ICP备2023001142号-4</a> <a href="https://beian.mps.gov.cn/#/query/webSearch?code=13092502002391" rel="nofollow" target="_blank"><img style="width:16px; 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