other
HOT PRODUCT
  • Precision Rolling Pipe
    Precision Rolling Pipe

    ‌RockySea Petro Precision Rolling PipeRockySea Petro Petro manufactures Precision rolling pipe in China. We have our own factory of Precision rolling pipe. RockySea Petro Petro provide the high quality and competitive price on Precision rolling pipe for you. Contact us now for Precision rolling pipe quotation.It has various types of cold rolling mill such as LG30, LG60, LG80 , LG220 and establishes a complete quality Control system.RockySea Petro’s precision rolling pipe has extremely high precision and straightness ca

    VIEW DETAILS
  • Drilling Jar
    Drilling Jar

    ‌RockySea Petro Drilling JarApplicationRockySea Petro can provide three main types drilling jar: mechanical, hydraulic, and hydraulic.1. The combination of mechanical and hydraulic drilling jar absorbers combines the advantages of the above two shock absorber principles. Even if the hydraulic delayed shock absorber fails, the mechanical shock absorber can still be used, and the technical performance has been greatly improved, which is in line with the future development direction of shock absorber prod

    VIEW DETAILS
  • High Strength Sucker Rod
    High Strength Sucker Rod

    ‌RockySea Petro High Strength Sucker RodHigh strength means high tensile strength in physical performance.RockySea Petro can manufacture high strength and ultra-high strength sucker rod with high quality. We have rich experience in production and a strong ability in research and development. Our products include various series of high strength and ultra-high strength sucker rod based on client requests.Description There are two types of ultra-high strength sucker rods in China. The first one is HL with

    VIEW DETAILS
  • Skid-mounted fracturing equipment
    Skid-mounted fracturing equipment

    ‌RockySea Petro Skid-mounted fracturing equipmentDescriptionIn the field of petroleum, hydraulic fracturing refers to a method of using hydraulic action to form fractures in oil and gas reservoirs during oil or gas production, also known as hydraulic fracturing. After a certain stage of oil well production, the production capacity and permeability decrease. In order to enhance oil drainage capacity and increase oil well production, people have invented fracturing technology. The methods of

    VIEW DETAILS
  • BOP Steam Injection And Oil Recovery Integration Wellhead
    BOP Steam Injection And Oil Recovery Integration Wellhead

    RockySea Petro BOP Steam Injection And Oil Recovery Integration WellheadRockySea Petro has more than 40 years of experience in oil and gas wellhead & x-mas tree and valve production, with advanced manufacturing and testing equipment, can produce a variety of pressure levels, material levels, specification levels of well control equipment. After more than 20 years of development, Various types of thermal recovery wellhead & x-mas tree equipment have been formed, used in many oilfields in the world. RockySea Petro’s

    VIEW DETAILS

Sinker Bar

Date:2024-05-08 Popularity:869

RockySea Sinker Bar



Sinker bars of RockySea Petro are exported to the United States, Canada, Europe, Africa and Middle East, and we establish cooperative relationships with international customers all over the world.

RockySea Petro owns a strong ability about research, design and production of sinker bar with decades of manufacturing experience. RockySea Petro has been certified by ISO9001,  ISO14001 and OHSAS18001.RockySea Petro adopts the principle of combining intl standards, national standards and users’ views for design.


Description

Grade and material

The current edition of intl standards recognizes two grades of sinker bars,Grade 1 Carbon steel and Grade 2 Alloy steel. Below are the material examples

  • AISI 4623 Nickel-Molybdenum Alloy Steel 90,000 psi minimum tensile.
  • AISI 1024 Plain Carbon Steel 65,000 psi minimum tensile
Sinker bar also have C,D,K strength grades as sucker rods. In general terms  Grade 1 is referred to as Grade C while Grade 2 is referred to as Grade K depending on material alloy type.

Sinker Bar is heavier than the conventional rod. It is used at the bottom of the sucker rod string to keep the rod string under tension and reduce crooks of the sucker rod string during downward travel.Sinker bars provide concentrated weight above the pump to help keep the rod string straight and in tension, which reduces buckling of the sucker rods or the pump plunger. Sinker bars are made of hot rolled carbon manganese steel bar. Sinker bars are surface turned and have  double sucker rod pins, shoulders, and wrench flats on both ends. One end has a reduced section for elevator seating and lifting.


Features

External diameter (mm)External thread
dimensions (mm)
Wrench square
width (mm)
Wrench square
length (mm)
Sinker bar
length  (mm)
Mechanical
properties
1 1/4(31.75)5/8(15.9)SR25.431.87600;91001. Class-1:
tensile strength≥448MPa
1 1/4(31.75)3/4(19.1)PR25.431.87600;9100
1 3/8(34.93)5/8(15.9)SR25.431.87600;9100
1 3/8(34.93)3/4(19.1)PR25.431.87600;9100
1 1/2(38.1)3/4(19.1)SR33.338.17600;91002. Class-2:
tensile strength≥620MPa
1 5/8(41.28)7/8(22.2)SR33.338.17600;9100
1 3/4(44.45)7/8(22.2)SR38.141.37600;9100

 

RockySea Petro Copyright © 2008-2025 Inc. SITEMAP