Ltd by breaking through traditional cold-bending forming change on OD 114 mm high frequency welded pipe units.
上海申花钢管有限公司在114高频焊管机组上突破传统冷弯变形方法，设计出强力焊管。
A reliable way to improve the quality of spiral pipe was the substitution of high frequency butt welding for HF lap welding.
高频对焊代替高频搭焊是提高中直径螺旋焊管质量的可靠途径。
The demand to welding process of high-frequency welding pipe is introduced, some related parameters proposed.
介绍了高频焊管对焊接工艺的要求，提出了有关工艺及技术参数。
The high frequency welded pipe production is the fastest and the most efficiency way to produce pipe, but it also produces varies kinds of weld defects.
高频焊接制管是最快和最有效的制管方法，但高频焊接制管会产生各种各样的焊接缺陷。
The high frequency welding procedure and its forming fundamental of spiral fin pipe is introduced.
介绍了螺旋翅片管高频焊接工艺及其成型基本原理。
The reason of lower welding qualified rate of high frequency welding spiral fin pipe is analyzed.
分析了高频焊接螺旋翅片管焊接合格率偏低的原因。
The rapid analysis method of welding quality, acid washing test, for the longitudinally high frequency welded pipe is introduced.
介绍了一种快速分析高频直缝焊管焊接质量的方法——酸洗试验。
When high frequency pulse current is applied to CC billet, the centerline pipe and centerline crack in the billet are eliminated, and the central segregation and central crack are reduced.
进行了连铸工业试验，效果明显：铸坯中心缩孔和中心裂纹被消除，中心偏析和中间裂纹也得到降低。
When applied high frequency pulse current on CC. billet, the centerline pipe and centerline crack in billet are eliminated, and the central segregation and middle crack are improved.
用高频电场处理连铸小方坯，可以消除铸坯中心缩孔和中心裂纹。改善中心偏析和中间裂纹。
Our product main material for high frequency steel pipe and PP import plastic product.
我们产品次要的资料为高频钢管和PP入口塑料产品。
The company now has six high-frequency straight seam welded pipe units, three hot-dip galvanizing line.
公司现拥有六条高频直缝焊管机组，三条热镀锌生产线。
The design for high-power MOS tube as the core original pipe, using discrete components and integrated operational amplifier combines the low-frequency power amplifier design.
本计划以大功率管MOS管为核心原件，采用分立元件与集成运放相连合计划出的低频功率放大器。
The reason of the Weld Joint Cracking on high frequency welding pipe was investigated by using macroscopic observation, metallographic technology, fracture analysis and EBSD technology.
本文通过使用宏观观察、金相分析、断口分析和电子背散射衍射（EBSD）等分析手段对高频焊管焊后弯管开裂的原因进行了分析。
Ltd, etc. yearly output is 300ten thousand ton of steel brand, palte, seamless steel tubes, high frequency welded pipe and nickel, gold, copper, cobait, chromium iron etc.
年产钢带、无缝钢管、高频焊管及镍、金、铜、钴、铬铁等金属产品300万吨。
Ltd, etc. yearly output is 300ten thousand ton of steel brand, palte, seamless steel tubes, high frequency welded pipe and nickel, gold, copper, cobait, chromium iron etc.
年产钢带、无缝钢管、高频焊管及镍、金、铜、钴、铬铁等金属产品300万吨。
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