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China Komal International Co., Ltd
China Komal International Co., Ltd Professional exporter for drilling equipments and sapre parts
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Drill Collar Seamless Steel Pipe Corrosion Resistance Abrasion Resistance

Drill Collar Seamless Steel Pipe Corrosion Resistance Abrasion Resistance

Brand Name : KOMAL
Certification : API
Place of Origin : CHINA
MOQ : 1 set
Price : negotiation
Payment Terms : T/T
Supply Ability : 1 set / month
Delivery Time : 20 days
Packaging Details : customized
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Sucker Seamless Steel Pipe High Precision Better Reliability


Drill collars are onshore and offshore petroleum geol-ogy, exploration and development drilling is an impor-tant tool.

Technical Features

High quality alloy steel is adopted to improve the overall conditioning, the product strength, long service life. Threaded roots for cold rolling strengthening treatment, pressure big, strong ability to resist fatigue. Thread after phosphat i ng or copper plating process, abrasion resistance, good sealing, corrosion resistance, resistance to strong adhesive.


Drill rig,the hoist system for oil and gas drilling,oil field

Specifications :

The main technical parameters

Meehanical property of Drill Collar
mmIn incha0.2Mpaob Mpa4%HBAKVJ
79.4-171.43 1/8-3/4≥758≥965≥13285-341≥54

The main technical parameters

Length between
Inner Thread
Shoulder and
the last Dens
of Inner
Taper of the
Hole nest to
inner Thread
Outer Thread
Diameter Outer
Thread Diameter
Length between
alternative Inner
Thread Shoulder
and Stress Re
Iief Groove
1•59mmDcb+0. 40, -0+20. 83DRG+0 -0. 79LRG +0 -3. 18
NC3582. 682. 15166. 6782. 1585. 73
NC38(3 I/2IF)88.988. 11166.6789.392.08
NC44101.6101.6166. 67106. 36104. 78
NC46 (4 IF)101.6106.76166.67109. 93104. 78
NC50(4 I/2IF)101.6117.48166. 67120. 65104. 78
NC56114 3121.84250134. 14117.48
NC61127132. 95250149. 25130. 18
NC70139.7152250171.05142. 88
6 5/8REG114.3134. 14166.67137.72117. 48
7 5/8REG120.7133. 35250162. 72123. 83
8 5/8REG123.8149. 25250184.94127

Competitive advantages:

Competitive price with top quality,professional export service,provide all products as customer’s requirement,respond within shortest tim

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