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Sucker Rod Couplings for Sucker Rod and Polished Rod

Introduction

The suck rod couplings are used for connecting sucker rods, polished rods and sinker bars. Material of the couplings is high quality carbon steel or alloy steel, which are conform to and exceed the requirements of API Specification 11B.

Production

Classification

Four smooth surface sucker rod couplings on the gray background.

Smooth surface suck rod couplings.

Four sucker rod couplings with wrench square on the coupling body.

Sucker rod couplings with wrench square.

Specification

Sucker rod couplings specification

Item Spec Internal thread spec Length Outside diameter
Full size Slim hole
ESRC-01 5/8" 15/16" 4" 38.1mm 31.8mm
ESRC-02 3/4" 1-1/16" 4" 41.3mm 38.1mm
ESRC-03 7/8" 1-3/16" 4" 46mm 41.3mm
ESRC-04 1" 1-3/8" 4" 55.6mm 50.8mm
ESRC-05 1-1/8" 1-9/16" 4.5" 60.33mm N/M

Sub-couplings specifications

Item Spec Internal thread spec Length Outside diameter
Small end Big end Full size Slim hole
ESC-01 5/8" × 3/4" 15/16" 1-1/16" 4" 41.3mm 38.1mm
ESC-02 3/4" × 7/8" 1-1/16" 1-3/16" 4" 46mm 41.3mm
ESC-03 7/8" × 1" 1-3/16" 1-3/8" 4.5" 55.6mm 50.8mm
ESC-04 1" × 1-1/8" 1-3/8" 1-9/16" 5" 60.3mm N/M

Polished rod couplings

Item Spec Internal Thread Spec Length Outside Diameter Vanish Cone
Full Size Slim Hole
EPRC-01 5/8" 15/16" 4" 38.1mm 31.8mm
EPRC-02 3/4" 1-1/16" 4" 41.3mm 38.1mm
EPRC-03 7/8" 1-3/16" 4" 46mm 41.3mm
EPRC-04 1" 1-3/8" 4" 55.6mm 50.8mm
EPRC-05 1-1/8" 1-9/16" 4.5" 60.3mm N/M

Package

Several sucker rod couplings in the carton with plastic paper in the carton.

Sucker rod couplings in carton package.

Four wooden boxes in the container and fastened by the steel wire rope.

Sucker rod couplings in wooden box package.

Features

Application

The sucker rod couplings are widely used in the oil industries for connection for sucker rod, polished rod, pony rod and sinker bars.

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