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Vertical and horizontal type welding rod heat preservation cylinder
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Harmless treatment method for waste and old pipelines
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A kind of low-temperature storage tank inner canister top board construction technique and low-temperature storage tank construction technology
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A kind of sucked type vertically fixes submerged-arc welding welding in storage tank method
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A kind of metal transfer of MIG/MAG accurately controls one side welding with back formation method
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A kind of welding gun with heat input real-time monitoring device
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A kind of portable hand automatic control cable stripper
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A kind of preparation method of wlding deposited metal SOHIC test specimen
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Two formula switch valve comprehensive calibrators of one kind and method of calibration
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A kind of Multifunctional debugging tool box and its adjustment method
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