API Grade Sucker Rod
Steel
Sucker Rods are manufactured from micro alloyed, modified, special bar
quality hot rolled carbon or alloy steel. Bar and sucker rod
dimensions and tolerances conform to API Spec 11B, latest edition, and
AISI Steel Products Manual.
Sucker rods are available in 5/8" (15.88mm), 3/4"
(19.05mm), 7/8" (22.23mm), 1" (25.40mm), and 1 1/8" (28.58mm) body
diameter and in 25' (7.62m) and 30' (9.14m) lengths, depending on grade.
All bars are straightened and Eddy Current (electro-magnetic) inspected for surface defects.
Manufacturing Process:
1. Rod Bar
The incoming rod bars are inspected for any damage, fault and
discontinuities.Before arranging the rod bars for production process,
carry out chemical composition testing, dimensional inspection &
surface quality inspection. High quality standard is maintained at
various stage inspections.
2.Manufacturing
Rod bars are manufactured from hot rolled alloy steel. Rod bars are
machine straightened and cold drawn to the required size. The rod bar
ends are hot forged according to API designed sizes. The rods are then
heat treated over the full length.As per requirement of mechanical
properties, the rods are normalized and tempered to the specified level
or quenched and tempered to the required hardness and strength. Care
is taken to achieve metallographic structure with no residual stresses
in the rod.A sample specimen is cut from the heat treated material
and is tested for ultimate tensile strength, yield strength and
elongation. The rod is then again checked for straightness. The forged
ends are properly aligned with its body. Rods are cleaned by
shot-blasting to remove any scale and oxidation. The forged ends are
machined on C.N.C. Lathe machines as per API dimensions and checked
with API approved gauges.
Sucker Rod Sizes
Size (in) | Thead.d(in) | Length (ft) | Outside diameter of pin shoulder | Length of pin (mm) | Length of wrench square(mm) | Width of wrench square (mm) |
5/8 | 5/8 | 2,4.6,8,10,25,30 | 31.75 | 31.75 | more than31.75 | 22.23 |
3/4 | 3/4 | 38.10 | 36.51 | 25.40 | ||
7/8 | 7/8 | 41.28 | 41.28 | |||
1 | 1 | 50.80 | 47.63 | more than38.10 | 33.34 | |
1-1/8 | 1-1/8 | 57.15 | 53.98 | more than41.28 | 38.10
|
Sucker Rod Steel Grades
Grade | Yield Strength Rel(MPa) |
Tensile Strength Rm(Mpa) |
Percentage Elongation A(%) |
Contraction Percentage Of Area Z(%) |
Impact energy |
C | 414 | 621-793 | 12 | 55 | 70 |
D | 620 | 794-965 | 10 | 50 | 60 |
K | 414 | 621-793 | 12 | 55 | 70 |
KD | 620 | 794-965 | 10 | 50 | 60 |
