Patent certificates - Hefei Ziking Steel Pipe CO., LTD.

技術中心

技術中心

Technology

Patent of a straight seam submerged arc welded steel pipe for prestressed concrete pipe pile construction
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Patent of a sound absorption and sound insulation double-layer steel pipe filling material and its processing method
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Patent of a weather resistant and corrosion resistant longitudinal submerged arc welded steel pipe
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Patent of a processing technology of submerged arc welded straight seam steel pipe with impact absorption structure
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Patent of a high-strength weather resistant longitudinal submerged arc welded steel pipe for outdoor building construction
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Patent of a preparation method of high weather resistant multi wire submerged arc welded steel pipe for marine environment
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Patent of a three-layer structure composite steel pipe for high-pressure steam remote heating
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Patent of a processing technology of steel jacketed steel insulation steam steel pipe
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Patent of a connecting device between steel pipe and welding machine ground wire
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Hefei Ziking Steel Pipe CO., LTD.

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