Stem Weight Bar / Standard Stem For Wireline Tool String 1.5" - 2.5"

The wireline stem or weight bars, sometime referred to as Sinker Bars, are designed to serve two purpose. Firstly the standard stem is the weight required to overcome forces created by well pressure and the size of cable used and secondly it is the mass required to deliver impacts when setting or pulling devices in the wellbore. The stem is cylindrical with fishing neck and pin connection (or QRJ pin) on the top and with box connection (or QRJ box) on the bottom.

Specifcation of Standard Stem

ZZ TOP Oil Tools Co., Ltd located in XI’AN City in China, we are in full service on design, production and supply of oilfield downhole tools and Wellhead Equipment.

Over more than 10 years, we become a fast growing organization, now our two sub-factories, equipped with CNC lathes, Miller, deep-hole drilling &boring machine and other advanced machines, have enough production capacity to meet the customers’ requirement. And we build a professional & strong team including technical, sales, logistic and leading management department, which make our company success of manufacturing and providing cost-effective downhole tools and create added value for customers around the world.

Now our tools are supplied to worldwide and enjoy the good reputation.We always focus on providing the our clients with highly efficient & expertized service and approach each enquiry with meticulous attention to technical specifications and insist on “Traceability, Serialization” for each tools. We will keep innovating and providing more durable products and reliable service for worldwide customers.