Our steel sucker rods are manufactured from micro alloyed, modified, special bar quality hot rolled carbon or alloy steel. The steel 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.

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


Definitions of Loads
Light: 0Mpa to 170Mpa
Medium: 170Mpa to 240Mpa
Heavy: 240Mpa to 290Mpa
Extra Heavy: 290Mpa min

Definitions of Seating Depth
Shallow: 1220mtrs max
Medium: 1220mtrs to 2130mtrs
Deep: 2130mtrs min


Chemical Composition (%)

Grade	C	Mn	Si	P	S	Cr	Ni	Mo	Cu	V
Grade C(25CrMnVA)(AISI 1526)	0.21-0.30	1.30-1.70	0.17-0.37	0.025 max	0.025 max	0.30 max	0.35 max	0.06 max	0.20 max	0.07 max
Grade K (20Ni2MoA)(AISI 4621)	0.18-0.23	0.70-0.90	0.17-0.37	0.025 max	0.025 max	0.35 max	1.65-2.00	0.20-0.30	0.20 max	0.07 max
Grade D (20CrMoA)(AISI 4119)	0.17-0.24	0.40-0.70	0.17-0.37	0.025 max	0.025 max	0.80-1.20	0.30 max	0.15-0.25	0.20 max	0.07 max
Grade KD (25NiMnCrMoA)(AISI 3130)	0.22-0.29	0.70-1.00	0.15-0.35	0.025 max	0.025 max	0.42-0.65	0.72-1.00	0.01-0.06	0.20 max	0.07 max
Grade HL (30CrMoA)(AISI 4130)	0.26-0.33	0.40-0.70	0.17-0.37	0.025 max	0.025 max	0.80-1.10	0.30 max	0.15-0.25	0.20 max	0.07 max
Grade HY (30CrMoA)(AISI 4130)	0.26-0.33	0.40-0.70	0.17-0.37	0.025 max	0.025 max	0.80-1.10	0.30 max	0.15-0.25	0.20 max	0.07 max
Grade KH (30CrNi2MoA)(AISI 4330)	0.28-0.35	0.70-0.90	0.17-0.37	0.025 max	0.025 max	0.80-1.10	1.65-2.00	0.20-0.30	0.20 max	0.07 max

Mechanical Properties

Grade	Tensile Strength Rm (Mpa)	Yield Strength Rp0.2 (Mpa)	Elongation A (%)	Area Reduction Z (%)	Hardness (HRC)
C	621-793	414 min	12 min	55 min	16-23
K	621-793	414 min	12 min	55 min	16-23
D	793-965	586 min	10 min	50 min	23-32
KD	793-965	586 min	10 min	50 min	23-32
HL	965-1195	795 min	10 min	50 min	32-36
HY	965-1195	795 min	/	/	42 min
KH	965-1195	620 min	10 min	50 min	32-36

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