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Coal Seam Gas Drainage and Sealing Device

Coal Seam Gas Drainage and Sealing Device
ozone and high pressure. · Sealing hole diameter : 25 mm - 155 mm. · Working pressure : 1 MPa - 6 MPa. · Safety value opening pressure : 0.4 MPa - 0.5 MPa. · Working flow : it can inject water 5 t - ...

Water Injection Hole Packer

<strong>Water</strong> Injection Hole Packer
water is injected in high pressure, which can crush the coal. So it can lessen initiating explosive devices, lower the cost and increase the workers' sense of safety. · Breaking coal with water ...
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