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  The sucker rod, an essential part in the rod production system, is used to connect the pumping unit on the ground and the oil well pump down in the well.Products comply with Specifications of Sucker Rods (API Spec 11B) and other related standards, and have acquired the authorization to use Official API Monogram.The company produces K, C, D or HL sucker rods with various specifications complying APIs requirements.

  Technical Performance & Characteristics
1.Advanced online fault detection, hardening, continuous overall tempering and ball blast techniques are incorporated so that mechanical
strength and overall performance are enhanced.

2.Threads are processed on special numeral control lathes avoiding any rotation of the rod and then subject to roll forming so as to ensure high precision, reliable performance and extended service life.

Main Technical Parameters

Nominal dia mm(in)

15.885/8

19.053/4

22.237/8

25.401

28.58 (1 1/8

Nominal outer dia. of threads mm(in)

23.8115/16

26.991 1/16

30.161 3/16

34.931 3/8

39.691 9/16

Outer dia. of clamps mm(in)

38.101 1/2

41.281 5/8

46.041 13/16

55.562 3/16

60.332 3/8

Standard length mm(ft)

9140(30); 8000(26); 7620(25)

Mechanical Performance Indexes

Grade

Min. yield strength MPa(psi)

Min. intensity of tension MPa(psi)

Max. intensity of tension MPa(psi)

K

41460000

62090000

793115000

C

D

58685000

793115000

965140000

HL

793115000

965140000

1195173339

  Grade C sucker rod: Moderate strength, not susceptible to sulfide stress cracking, suitable in sour medium.
  Grade D sucker rod: Made of quality heat treated steel alloy, with high tensile and yield strength; suitable for non-corroding or mildly corroding environment.
  Grade K sucker rod: With good corrosion resistance in H2S, CO2 and NaCl media, superior tensile strength.
  Grade HL and HY sucker rod: High strength; structure and size matching with grade D sucker rod; withstanding 966-1, 136 MPa (140, 000-164, 720 psi); suitable for deep and large displacement wells.

Mechanical Properties of Pony Rods

Grade

Yield strength
MPa (psi)

Tensile strength
MPa (psi)

Elongation
%

Reduction of area %

K

372 (53, 940)

589-793 (84, 970-114, 985)

13

60

C

414 (60, 030)

620-793 (89, 900-114, 985)

13

50

D

586 (84, 970)

793-965 (114, 985-139, 925)

10

50

HL

793-862
(114, 985-124, 990)

966-1136

12

45-55

HY

MPa (psi)

MPa (psi)

HRC Surface

HB Core

540 (78, 300)

980-1, 176 (142, 100-170, 520)

42

224

 
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