Blast Hole Laum Pipe

Lus piav qhia luv luv:

DTH laum pas nrig / laum yeeb nkab siab siab rau quarrying, dej zoo drilling, mining

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Lub laum yeeb nkab yog cov yeeb nkab uas muaj zog steel siv rau hauv qhov drilling.Nyob ntawm txoj kev drilling thiab lub hom phiaj ntawm kev drilling, cov kav dej tuaj yeem sib txawv tuab thiab ntev, nrog qhov ntev tshaj plaws yog 3-10 meters.Cov kav dej laum tau koom ua ke ib qho los ntawm ib qho raws li kev xyaum ua kom tob rau hauv cov pob zeb.Ua ke, cov kav dej tsim ib txoj hlua tho, uas tuaj yeem txuas tau ob peb kilometers hauv av.

Txhua lub laum yeeb nkab muaj peb qhov welded ua ke, ib feem hauv nruab nrab thiab ob qhov kawg.Cov khoom kawg muaj xws li txiv neej ("pin") lossis poj niam ("lub thawv") xov, uas tso cai rau kev sib txuas ntawm ob txoj hlua tho.Tag nrho cov hlua tho yog raug rau cov loads siab heev thaum lub sij hawm drilling, thiab cov xov yog ib txwm yog qhov tseem ceeb tshaj plaws hauv txhua cov yeeb nkab.Yog tias vim li cas cov txiv neej thiab poj niam xov tsis haum rau ib leeg, cov xov feem ntau yuav tawg thiab koj yuav poob tag nrho koj txoj hlua tho.

Loj		Nominal loj Lb/ft	Xam qhov hnyav hom		Phab ntsa thickness
hauv.	mm	Nominal loj Lb/ft	lb/ft	kg/m	hauv.	mm
2 3/8	60.3	6.65 ib	6.26	9.32 ib	0.28 ib	7.11 ib
2 7/8 ib	73	10.4	9.72 ib	14.48 Nws	0.362 ib	9.19 ib
3 1/2	88.9 ua	9.5 ib	8.81 ib	13.12 Nws	0.254 ib	6.45 Nws
3 1/2	88.9 ua	13.3	12.31 Nws	18.34 Nws	0.368 ib	9.35 Nws
3 1/2	88.9 ua	15.5 ib	14.63 Nws	21.79 Nws	0.449 ib	11.4
3 1/2	88.9 ua	15.5 ib	14.63 Nws	21.79 Nws	0.449 ib	11.4
4	101.6 ib	14	12.93 Nws	19.26 Nws	0.33 ib	8.38 ib
4 1/2	114.3 ib	13.75 Nws	12.24 Nws	18.23 Nws	0.271 ib	6.88 ib
4 1/2	114.3 ib	16.6	14.98 Nws	22.31 Nws	0.337 ib	8.56 ib
4 1/2	114.3 ib	20	18.69 Nws	27.84 Nws	0.43 ib	10.92 Nws
5	127	16.25 Nws	14.87 Nws	22.15 Nws	0.296 ib	7.52 ib
5	127	19.5 Nws	17.93 Nws	26.71 Nws	0.362 ib	9.19 ib
5	127	19.5 Nws	17.93 Nws	26.71 Nws	0.362 ib	9.19 ib
5	127	25.6 ib	24.03 Nws	35.79 ib	0.5	12.7 ib
5	127	25.6 ib	24.03 Nws	35.79 ib	0.5	12.7 ib
5 1/2	139.7 ib	21.90 Nws	19.81 Nws	29.51 Nws	0.361 ib	9.17 ib
5 1/2	139.7 ib	24.70 Nws	22.54 Nws	33.57 Nws	0.415 ib	10.54 Nws