Another 88 inch super-large caliber coal gas pipeline plugging project succeed.

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Only 25 days later, another 88 inch super-large caliber coal gas pipeline plugging project, in the state of eliminating plugging air bag, realized a successful stopple by using the core patented technology of FEIHU PIPELINE (large-caliber folding plugging head), and the plugging tightness reached zero leakage.It only took 4 days from the beginning of welding to the end of plugging.