API 11B Class D Sucker Rods


Standards: API 11B Class D

Material: AISI 4130

size: 5/8″, 3/4″,  7/8″, 1″

Length: 7.62 or 8 and 9.14 meters.

The sucker rod is a type of long and thin steel rod used to connect the pump made a low tempering carbon alloy steel made, which is an important part of the production device with a rod pump. The sucker rod string is made up of several sucker rods connected by a collar, which is connected in the oil pipe with an internal thread hoop and extends to the piston in the underground oil layer to pump oil through reciprocating motion.

Conventional sucker rod production technology is simple, low cost, small diameter, a wide range of applications, accounting for more than 90% of rod pumping Wells. Conventional steel sucker rods are divided into four grades: class C, class D, class K, and class H. Class D is the most commonly used grade sucker rod, steel sucker rod for medium and heavy-duty oil Wells. Class D sucker is made of high-Cr-Mo alloy structural steel AISI 4130, which is characterized by high strength and plasticity, is applicable to non-corrosive or slightly corrosive environment of deep wells. The most commonly used single length is 7.62 or 8 and 9.14 meters.

Specification of Sucker Rod

Specification 5/8″ 3/4″  7/8″ 1″
External   thread 15/16″ 1-1/16″  1-3/16″ 1-3/8″
Rod   diameter Ф16 Ф19 Ф22 Ф25
Threaded   joint shoulder Ф31.8  Ф38.1 Ф41.3 Ф50.8

The Physical Property of Sucker Rod

Grades Y.S〥sMpa S.s 〥bMpa Elongation     〥% Reduction    of area  Ψ% Impact   toughness akI J/cm2
D ≥620 794-965  ≥10 ≥50  ≥60.8

Coupling specification

Specification Internal    thread Length,   mm Collar   diameter, mm
Full-size collar Small   hole coupling
5/8″ 15/16″ 102 38.1 31.8
3/4″ 1-1/16″  102 41.3 38.1
7/8″ 1-3/16″  102 46 41.3
 1″ 1-3/8″ 102 55.6 50

Sucker rod offers good high strength, high flexibility and good weldability, which can greatly reduce sucker rod failure frequency and tubing wear. WLD steel manufacture, supply, sell API 11B OTCG, casing pipe, sucking rod and other accessories in various sizes and specifications, if you are looking for this material, please contact us or get a quotation. Not only do we have all kinds of sizes, but we also have all kinds of sizes that are hard to find.