BQ NQ HQ PQ drilling pipes for wire-line coring

drilling pipes for wire-line coring
1.Direct-coupled pipes
2.Bulk heat treatment
3.1200~2000m
4.International Standard

BQ NQ HQ PQ drilling pipes for wire-line coring

 

Specification  :             BQ           NQ            HQ

OuterDiameter(mm) :    55.6        70.15          89

InnerDiameter(mm) :      46            60           77.8

Lenth(m)  :              3/2/1.5    3/2/1.5       3/2/1.5

ThreadStandard  :  INTERNATIONAL STANDARD

MaterialQuality    :XJY850

Heat treatment   :  BULK HEAT TREATMENT