News
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Why 4145H Outshines 35CrMo in Drilling Tool Innovation (part 3)
According to the relevant standards outlined in Sampling Location and Specimen Preparation for Mechanical Property Testing of Steel and Steel Products, heat-treated specimens were sampled and initially examined. After preliminary testing, they were machined into standard test pieces for mechanica...Read more -
The Difference Between 4130 Forged Steel and 4330 Forged Steel.
4130 forged steel and 4330 forged steel alloy steel are components, but although their alloy compositions are both low-alloy steels commonly used in high-strength and high toughness mechanical parts, there are some significant differences in their alloy compositions and properties. 1. Differenc...Read more -
The drill bit on oil drilling
PDC bits, i.e., polycrystalline diamond composite bits, have been widely used in oil drilling because of their fast penetration rate, long life and high footage. Since 1973, when General Electric introduced PDC cutting blocks and developed the first PDC drill bit, this technology has received wid...Read more -
Coupling: A Comprehensive Guide to Functions, Types, and Applications
1. What is a Coupling? A coupling is a mechanical device used to connect two rotating shafts or components, primarily serving to transmit power (torque and rotational motion) while accommodating certain degrees of axial, radial, or angular misalignment. Additionally, couplings help reduce vi...Read more -
High-Quality Drilling Tools(2)
Enhancing Drill String Performance with High-Strength Drill Pipes – Steel Grades and Strength Characteristics At Welongpost, we specialize in providing premium-quality drilling tools that meet the demanding requirements of the oil and gas industry. One of the key factors influencing the performan...Read more -
How to Eliminate Residual Stresses in Forgings
Residual stresses are internal stresses that remain in a material after the external forces or conditions that created them have been removed. In the case of forgings, these stresses can arise due to uneven cooling, plastic deformation during the forging process, or changes in the material’...Read more -
Why 4145H Outshines 35CrMo in Drilling Tool Innovation (part 2)
We conducted a series of tests on 4145H and 35CrMo round steel bars of the same specifications, including chemical composition, end-quench hardenability, non-metallic inclusions, grain size, macrostructure, and microstructure. 1. Chemical Composition Comparing the chemical compositions of ...Read more -
Introduction to the Hole Opener
Hole Opener is a wellbore expansion tool used in oil and gas drilling engineering, mainly used to increase the diameter of the wellbore during the drilling process to meet the technical requirements of different drilling stages. It is usually installed on the drill string, located above the drill...Read more -
The drill bit on oil drilling
The drill bit is an important tool for oil drilling, and its working performance will directly affect the drilling quality, drilling efficiency and drilling cost F1. The design of the three-cone bit is mostly based on practical experience, combined with the method of trial and use, and the design...Read more -
Gas Lift Mandrels: An Essential Component for Oil and Gas Extraction
Gas Lift Mandrels are a crucial element in the oil and gas extraction industry, specifically designed to improve the efficiency of gas lift operations. As artificial lift devices, gas lift mandrels facilitate the extraction of oil and gas from wells, particularly those with low pressure or high v...Read more -
High-Quality Drilling Tools
Comprehensive Overview of Drill String Composition and Connection Types – Your Reliable Partner for High-Quality Drilling Tools At WELONG, we are dedicated to providing high-quality and reliable drilling tools to meet the diverse needs of the oil and gas industry. Our drill strings are manufactu...Read more -
How to Improve the Metal Utilization Rate of Forgings?
Metal utilization rate is a critical factor in the forging industry, directly impacting material costs, production efficiency, and sustainability. Forging processes inherently involve material loss due to machining allowances, flash, and excess stock removal. However, optimizing the forging proce...Read more
