api configurations and connections are cut in accordance with api spec. & api rp g requirement. special drill collar such as for high pressure well are also available. technical characteristics drill collar are made of modified alloy steel fully heat treated in order to obtain high hardness. cold rolling...
api configurations and connections are cut in accordance with api spec. & api rp g requirement. special drill collar such as for high pressure well are also available. technical characteristics drill collar are made of modified alloy steel fully heat treated in order to obtain high hardness. cold rolling...