Drill pipe a steel grade ngu ai gaw, drill pipe hta lang ai steel grade hpe tsun mayu ai rai nna, dai hpe shi a yield strength hku nna dawdan ai. American sau htu ai hpung (API) gaw, htu shaw ai pipe n-gang hpe D, E, 95(X), 105(G), hte 135(S) ngu ai 5 hku garan nna galaw da ai. Drill pipe steel grade grau tsaw wa yang, pipe a yield n-gun grau law wa nna, dai majaw, drill pipe a n-gun amyu myu grau law wa ai. Drill string n-gun hpe design galaw ai shaloi, drill string n-gun hpe grau kaja hkra galaw na matu bunghku n-gun hpe jat ai hta, steel grade hpe jat na matu hpaji jaw ai.

FAQ

Q1: Drill pipe n-gang grade ni ngu ai lachyum gaw hpa rai ta?
Q2: Gara API drill pipe grade ni hpe -n-gun ja ai htu shaw ai lam hta lang ai kun?
Q3: Drill pipe steel grade hpe gara hku lata la na kun?
Q4: Drill string n-gun a matu bunghku n-gun hpe jat ai hta steel grade hpe jat ai gaw grau kaja ai kun?
A4: Design law law hta, grai n-gun n jat ai sha n-gun lu la na matu, steel grade hpe upgrade galaw ai hpe ra sharawng ma ai.
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