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Products & Services - Line Pipe & OCTG -Drill Pipe, Heavy Weight Drill Pipe, Drill Collar

Oil Country Tubular Goods (OCTG)

Drill Pipe and Associated Products

Product Type
  • API drill pipe
  • Sour service drill pipe
  • Low temperature drill pipe
  • API tool joints
  • Double shoulder tool joints
  • Premium thread tool joints

Specifications:API Spec 5D, API Spec 7 and API RP 7G.
(1)all of the sizes above as specified in API Spec 7;
(2)The former thread type is preferential;
(3)FH =full hole tool joint.
Internal Coating for Drill Pipe
  • Multi-use internal coating;
  • Heat resistant and flexible internal coating;
  • High acid & alkali proof and abrasion resistance with thick film internal coating.
Part of Production Line of Drill Pipe

Heavy Weight Drill Pipe(HWDP)

Heavy weight drill pipe is an intermediate-weight drill string element. It can effectively reduce the stress between drill pipe and drill collar and provide part of drill pressure.

Product Type:Standard HWDP, Spiraled integral HWDP
Spiraled Integral HWDP's Specifications(length: 31 ft)
(1)Any kind of combination of standard integral/welded HWDP and tool joint of other models and sizes are available;
(2)HWDP with other I.D. &O.D. available as clients' demand.

Heavy weight drill pipe

Drill Collar

Specifications:API Spec 7 and API RP 7G.
Product type:Standard drill collar, Special spiral collar, Nonmagnetic drill collar.
Parameters:Length (ft): 30, OD. (in): 3 1/8-9 3/4, Bore(in): 1 1/4-3
Mechanical properties of nonmagnetic drill collar
Notes:Other nonmagnetic products are also available including short drill collar, integral HWDP, sub and stabilizer.

Drill Collar


Specifications:API Spec 7 and API RP 7G.
Product type:Square kelly, Hexagon Kelly.
Note: Any kind of combination of square (hexagon) kelly and left hand connection of other models and sizes are available.