API 7-1 4145&Non-mag Drill Collar
An ƙera abin haƙa ramin daga ƙarfe mai kauri da aka gyara da aka yi wa gyaran AISI 4145H kuma ana kula da shi da zafi a tsawonsa don samun daidaiton ƙarfi da dorewa. Ana yin gwaje-gwajen ƙarfe masu tsauri bisa ga ƙayyadaddun bayanai don tabbatar da cewa maganin zafi yana samar da tauri mai daidaito da matsakaicin ƙarfi ta cikin zurfin sandar.
Landrill yana samar da abin wuya na haƙa rami a cikin daidaitattun kuma an karkata shi daga 3-1/8" OD har zuwa 14" OD bisa ga ƙayyadaddun API, NS-1 ko DS-1.
5-1203, Yankin Masana'antu na Dahua, Lamba ta 2 Titin Yunshui, Yankin ci gaban fasaha mai zurfi, Xi'an, 710065, China
86-13609153141
