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KR100599078B1
(ko)
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나선 덕트의 제조장치 및 제조방법
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US4460118A
(en)
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Method for forming electric welded pipe
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(en)
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Method and apparatus for making pipe
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Tube mill and method of manufacture of thin walled tubing
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SU313586A1
(en, 2012)
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(en)
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Apparatus for manufacturing electric welded pipes under hot conditions
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(en)
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Method for forming an electric resistance welded steel pipe
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(en)
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Apparatus for making seam welded tubing
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US5005395A
(en)
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Method of manufacturing electric welded pipes under hot conditions
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(en)
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Methods and apparatus for welding sheet material
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(en)
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Apparatus and method for forming helically welded tubing
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JP2010162579A
(ja)
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鍛接鋼管の製造方法
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SU1331600A1
(ru)
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Способ производства спиральношовных труб
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US183327A
(en)
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Improvement in machines for making metallic tubing |
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(en)
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Apparatus for forming tubular blanks
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JPS6317527B2
(en, 2012)
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(en, 2012)
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(ja)
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薄肉金属管の製造方法
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高加工性溶接管の製造方法
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JPS6132094B2
(en, 2012)
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(ja)
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電縫鋼管の製造方法
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(zh)
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单层钎焊管及其制造方法
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SU350544A1
(en, 2012)
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JP3946534B2
(ja)
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外径形状に優れた電縫鋼管の製造方法
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SU555935A1
(ru)
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Способ изготовлени спиральношовных труб
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