Sucker rod is the common equipment in the oil extraction. It is manufactured through many process including the testing, straightening and forging. The sucker rod is placed between the polished rod and oil well pump. To deliver power. Sucker rod is manufactured from high quality carbon steel and alloy steel, which is conform to the API Spec 11B standard. Sucker rod has various types including the common sucker rod, hollow sucker rod and FRP sucker rod. Commonly we use the sucker rod coupling to connect the sucker rod. The sucker rod also has various specs to fit different environments and applications.

Product Paramenters

Mechanical properties of sucker rods:

Level	Material	Rm (Mpa)	Rel (MPa)	A 200mm (%)	Z (%)
C	Carbon steel/Alloy steel	621~793	≥ 414	≥ 13	≥ 50
K	Nickel molybdenum alloy steel	621~793	≥ 414	≥ 13	≥ 60
D	Carbon steel/Alloy steel	793~965	≥ 586	≥ 10	≥ 50
KD	Nickel molybdenum alloy steel	793~965	≥ 586	≥ 10	≥ 50
HL	Alloy steel	965~1195	≥ 793	≥ 10	≥ 45
HY	Alloy steel	965~1195	——	——	——

Mechanical performance couplings for sucker rods:

Specification	5/8 (16)	3/4 (19)	7/8 (22)	1 (25)	1 (25)
Tensile strength	Min 655 MPa
Grade	Grade T/ Grade SM
HRC	The hardness value of carbon steel is 56-62 (HRA), and the hardness value of alloy steel is 58-65 (HRA)/The hardness value of spray welding layer is not less than 595 HV

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