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Qingdao Honest Partner Industrial Co., Ltd.

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Mining Pipe


Epoxyresin(polyethylene)coatedcompositesteelpipeforundergroundcoalmine1ScopeItisapplicabletofivecategoriesofcoalmineundergroundsupplyanddrainage(KS),spraypipe(KJ),positivepressureairduct(KFZ),negativepressureairduct(KFF)andgasdrainagepipe(KW).2,thecomposition2.1,basepipe:weldedsteelpipe(spiralweldedpipe),seamlesssteelpipe.2.2,coating:specialcoatingforepoxyorpolyethylenemines.3,specificationsW:DN48-DN1016mm;H:DN48.3-DN1118mm.4,characteristics4.1,surfaceresistance:4.1.1,supplyanddrainpipes:thearithmeticmeanvalueofthesurfaceresistanceoftheouterwallshouldnotexceed1.0×109Ω;4.1.2,positivepressureduct:thearithmeticmeanofthesurfaceresistanceoftheinnerandouterwallsshouldnotexceed1.0×108Ω;4.1.3,spraypipe:thearithmeticmeanofthesurfaceresistanceoftheinnerandouterwallsshouldnotexceed1.0×106Ω;4.1.4,negativepressureduct:thearithmeticmeanofthesurfaceresistanceoftheinnerandouterwallsshouldnotexceed1.0×106Ω;4.1.5Gasdrainagetube:Thearithmeticmeanofthesurfaceresistanceoftheinnerandouterwallsshouldnotexceed1.0×106Ω.4.2,alcoholburnerburning:4.2.1,thearithmeticmeanoftheflamingburningtimeof6samplesshallnotbegreaterthan3S,andtheflamingburningtimeofanyoneofthesamplesshallnotexceed10S;4.2.2,thearithmeticmeanoftheflamingcombustiontimeof6samplesshallnotexceed20S,andtheflamingburningtimeofanyoneofthesamplesshallnotbe

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Mining Pipe

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