Namhlanje sazisa i-oyile esetyenziswa ngokuqhelekileyo umbhobho wentsimbi, umbhobho weoli (GB9948-88) ulungele ityhubhu yesithando sokucoca ioli, umtshintshi wobushushu kunye nombhobho ongenamthungo.

Umbhobho wentsimbi wokomba wejoloji (YB235-70) usetyenziselwa ukugrumba okungundoqo lisebe le-geological, elinokwahlulwa libe ngumbhobho wokubhobhoza, ikhola yokubhola, umbhobho ongundoqo, umbhobho we-casing kunye nombhobho wemvula ngokokusetyenziswa kwayo.

Umbhobho we-oyile luhlobo lwentsimbi ende enecandelo elinomngxuma kwaye akukho hlanganiso ngeenxa zonke, ngelixa umbhobho wepetroleum wokuqhekeka luhlobo lwentsimbi yecandelo loqoqosho.
I-API: Sisifinyezo se-English American Petroleum Institute, intsingiselo yesiTshayina kwi-American Petroleum Institute.

I-OCTG: Sisishunqulelo se-Oil Country Tubular Goods, oku kuthetha ukuba umbhobho okhethekileyo we-oyile ngesiTshayina, kubandakanywa i-Oil casing egqityiweyo, umbhobho wokubhobhoza, ikhola yokubhobhoza, ikhola, kunye nokudibanisa okufutshane, njl.

Iityhubhu: Umbhobho osetyenziswa kwimveliso yeoli nerhasi, inaliti yamanzi, kunye nokuqhekeka kweasidi equleni.

Casing: Umbhobho obaleka ukusuka phezu komhlaba ukuya kumngxuma ogrunjwe kakuhle njengolwelwe ukukhusela udonga ukuba lungadiliki.

Umbhobho wokugrumba: umbhobho osetyenziselwa ukugrumba imingxuma.

Umbhobho: Umbhobho osetyenziselwa ukuhambisa ioli negesi.

Ikhola: i-cylinder enentambo yangaphakathi esetyenziselwa ukudibanisa imibhobho emibini enentambo.

Izinto zokudibanisa: umbhobho osetyenziselwa ukwenza ukudibanisa.

Iintambo ze-API: iintambo zombhobho ezichazwe kwi-API 5B, kubandakanywa iintambo zombhobho ojikelezayo, iintambo zombhobho omfutshane ojikelezayo, iintambo zombhobho omde ojikelezayo, i-offset trapezoidal thread threads, intambo yombhobho wepayipi, njl.

Umsonto okhethekileyo: uhlobo lwentambo engekho ye-API kunye nokutywinwa okukhethekileyo, ukujoyina kunye nezinye iipropati.

Ukungaphumeleli: ukulahlekelwa ngumsebenzi wokuqala ngenxa yokuguqulwa, ukuphuka kunye nokulimala komhlaba phantsi kweemeko ezithile zenkonzo. Iifom eziphambili zokungaphumeleli kwe-casing zezi: i-extrusion, i-slip, i-rupture, i-leakge, i-corrosion, i-bonding, i-wear njalo njalo.