We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 different branches. For more details: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828

                                         API 11B 7/8” Sucker Rods Couplings

The sucker rod couplings are used for connecting sucker rods, polished rods and sinker bars. 
 -The main types of sucker rod couplings are sucker rod couplings, polished rod couplings and sub-couplings.
– All of the three types have two classes: class T(through-hardened)and class SM (sprayed metal).
-Material: carbon steel, alloy steel.
-Specification:5/8″, 3/4″, 7/8″1″, 1 1/8″
 
The coupling blanks are formed or machined to size and tolerance, threaded using a cold-forming rolled thread tap and coated for anti-galling and lubrication properties.
 
 Class T couplings are recommended for installation where abrasion or corrosion-abrasion is not a problem.
Class SM couplings are recommended for abration or corrosion-abration position.

Production

• The sucker rod couplings are manufactured in their own dedicated line.
• Cleaned → prepared → loaded on mandre EPT → shot blasted → flame sprayed → induction fused.
• The flame spray process is a computer controlled, menu driven operation that holds spray application
• tolerance to within two thousandths of an inch.

Classification

• The main types of sucker rod couplings are sucker rod couplings, polished rod couplings and sub-couplings.
• Sucker rod couplings has same box thread size in both end.
• The polished couplings are designed to connecting polished rod and sinker bars.
• The sub-coupling is also called cross over coupling. It has different box thread sizein both end.

• All of the three types have two classes: class T and class SM.
• The class T stands for Through-hardened.
• The class SM stands for sprayed metal.
• The outer diameter of the sucker rod couplings has full size and slim hole types.
• According to the surface of the suck rod couplings, it can be divided into smooth surface suck rod couplings and suck rod couplings with two wrench square
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Sucker rod couplings specification

We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 different branches. For more details: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828

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