Jereh Petroleum:jereh sinker bar, sinker bars, china sinker bar, chinese sinker bar, oilfield sinker bar and so on.

Jereh Petroleum:jereh sinker bar, sinker bars, china sinker bar, chinese sinker bar, oilfield sinker bar and so on.

sinker bar,Sink Bar

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Sinker Bar

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  The sinker bars are made of fine carbon-steel or fine alloy steel according to API Spec. 11B. Sinker bar is furnished with pin threads on each end. Its strength includes two grades, i.e., grade 1 and grade 2. When used, sinker bar can connect with polished rod on the upside of the oil well, and can also connect with sucker rod on the underside of the oil well.

sinker bar
 

sinker bar 1 Main Technical Parameters:
SIZE(in) SINKER BAR D.(in) THREAD D.(in) LENGTH OF SINKER BAR(ft) LENGTH OF ELEVATOR NECK(in) SIZE SUCKER ROD WITH WHICH USED(in)
11/4 11/4(+0.000,-0.030) 15/16 25
30		 4  5/8
13/8 13/8(+0.000,-0.030) 15/16 4  5/8
11/2 11/2(+0.000,-0.030) 11/16 4  3/4
15/8 15/8(+0.000,-0.030) 13/16 4  7/8
13/4 13/4(+0.000,-0.030) 13/16  4  7/8

sinker bar 2 Mechanical Properties:
GRADE TENSILE
STRENGTH
σb (Mpa)		 PERCENTAGE
ELONGATION
δ(%) 		   CONTRACTION
PERCENTAGE
OF AREA
Ψ(%)
1  448-620 ≥15 ≥55
2 621-794  ≥12  ≥50