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The filler cylinder of expansion joint
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Joint device for connecting pipe
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Packing cylinder and thereof expansion joint
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Packing cylinder for use of expansion joint
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Packing cylinder for use of expansion joint
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Landfill type expansion joint of insulated double pipe for having air cooling device
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Packing cylinder and thereof expansion joint
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Landfill type expansion joint of insulated double pipe for having air cooling device
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The slip joint
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The outside tube of slip- joint and double slip-joints using the same
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Expansion joint part of buried piping for inspecting welding condition
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Expansion joint part of buried piping for having automatic locking stopper
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Improved packing forces expansion contraction joint part for use of double packing
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Expansion joint part for having stopper to induce maximum expansion of buried piping and expansion joint part repairing method using the same
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Improved packing forces expansion contraction joint part of drinking water pipe
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Packing cylinder and ball joint using the same
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Packing cylinder and thereof expansion joint landfill type
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Packing cylinder,filling device and method for filling packing of cylinder expansion joint landfill type
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Expansion joint for having ball and slip function
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