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  • integral heavy weight drill pipe
  • heavy weight drill pipe
  • spiral heavy weight drill pipe
  • spiral heavy weight drill pipe

Integral Heavy Weight Drill Pipe

Integral heavy weight drill pipe is made from AISI 4145H alloy steel.acc.to API Spec.7 and SY/T5144. It is formed by hot forged and fully heat-treated.There is wear resistance hard banding on tool joints connections and central upset.The types of hard banding include Arno 100XT and 300XT.

■ Precauciones

Integral heavy weight drill pipe is made from AISI 4145H alloy steel.acc.to API Spec.7 and SY/T5144. It is formed by hot forged and fully heat-treated.There is wear resistance hard banding on tool joints connections and central upset.The types of hard banding include Arno 100XT and 300XT. All threads are phosphated,copperized or cold worked. All connections are equipped with pressed steel thread protectors. All threads are machined with CNC Lathes-Double-Shouldered and special threads.

◆Integral Heavy Weight Drill Pipe Size

Specification OD C ID E Connection Body Weight kg
Style OD A Inner and outer
thread DFmm
Upset
Center area Dmm End area Bmm
mm in mm in
Itype(9300mm)
ZH-JZ55- 51/2FH-I 139.7 51/2 51/2FH 92.1 35/8 170.7 152.4 144.5 730
ZH-JZ50- NC50-I 127.0 5 NC50 (41/2IF) 76.2 3 154.0 139.7 130.2 700
ZH-JZ45- NC46-I 114.3 41/2 NC46 (4IF) 71.4 2 13/16 145.3 127.0 117.5 585
ZH-JZ35- NC38-I 88.9 31/2 NC38 52.39 21/16 116.3 101.6 92.1 370
IItype(13500mm)
ZH-JZ50- NC50-II     NC50 (41/2IF) 165.1 61/2 154.0 139.7 130.2 945
ZH-JZ45- NC46-II     NC46 (4IF) 158.8 61/4 145.3 127.0 117.5 790

 

Main Technical Parameters

◆Mechanical Properties of Integral Heavy Weight Drill Pipe

Min.Yield Strength Min.Tensile Strength Min.Elongation % Brinell hardness HB Impact value
(V-notch CHARPY)
AK J
≥758 ≥964 ≥13 285~341 ≥54


◆ Integral Spiral Heavy Weight Drill Pipe Tolerances

OD ID Length Chamfer Inner and outer
thread connection A
Upset
D B
±0.8 ±1.60 ±150 ±0.4 ±0.8 ±0.75%D +0.8 0