321 stainless steel bar

Pipe end and wall thickness defect inspection of steel pipes

August 6, 2023 No Comments

Defects such as uneven wall thickness can exist at both ends of the pipe after rolling is completed, so each pipe is partially removed from both ends. This article describes how to know the defective part of the pipe end. Steel pipe has a hollow cross-section, the length of which is much greater than the diameter or circumference of the steel. According to the material is divided into carbon structural steel pipe, low-alloy structural steel pipe, alloy steel pipe and composite steel pipe; according to the use of transport pipeline, engineering structure, thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high-pressure equipment with steel pipe; according to the production process is divided into seamless steel pipe and welded steel pipe, which is divided into hot-rolled and cold-rolled (drawn) two

Effect of forging process on microstructure and properties of 2219 aluminum alloy flange

July 27, 2023 No Comments

In order to solve the problems of 2219 aluminum alloy flange forgings, such as coarse grain, vertical fiber direction and structural stress direction, the effect of forging process on its structure and properties was studied by means of room temperature tensile test and optical microscope. The results show that the single upsetting process has little effect on the structure and properties; The multi-directional forging process can effectively break the fiber structure of the bar and reduce the anisotropy of the forging. For all kinds of forging processes formed at one time under high temperature, the grain size of forgings reaches millimeter level; When the deformation is finished at a lower final forging temperature, the microstructure of the forging can be significantly refined and homogenized; The 2219 aluminum alloy flange

Selection strategies for valves commonly used in chemical design

July 24, 2023 No Comments

Valve selection is the top priority of chemical design, so the chemical design needs to be based on the valve type, metal material, use, characteristics, etc., for the correct selection of valves, the only way to ensure the safety and reliability of chemical production and improve the economic efficiency of chemical enterprises. Based on this, the basic principles of valve selection in chemical design are explained. The selection strategies of several valves, such as gate valves, ball valves, check valves, globe valves, throttle valves, etc., are introduced, and the considerations of valve selection are summarized. In the fluid piping system, the valve belongs to an indispensable and important control element, accounting for up to 30%-50% of the pipeline cost. A reasonable selection of valves can be completed to open and close, adjust the flow

Glossary of Terms

July 20, 2023 No Comments

Age Hardening Martensitic stainless steels are hardened by heating above their critical temperature, holding them at heat to insure uniform temperature, and cooling them rapidly by quenching in air or oil. Alloying Element The adding of any metallic element in stainless steel production in order to increase hardness, strength, or corrosion resistance. Molybdenum, nickel, and chromium are common alloying elements in stainless steel. Alloy Surcharge The producer’s selling price plus a surcharge added to offset the increasing costs of raw materials caused by increasing alloy prices. Annealing (Solution Annealing) A process of heating cold stainless steel to obtain maximum softness and ductility by heat treatment which also produces a homogeneous structure (in austenitic grades) or a 50/50 mixture of austenite and ferrite (in duplex grades).

Stainless Steel Flange: The Unsung Hero of Piping Systems

July 16, 2023 No Comments

When it comes to the intricate world of piping systems, one crucial component that often goes unnoticed but plays a significant role in ensuring the smooth functioning and safety of the entire system is the stainless steel flange. This unassuming yet vital piece of hardware acts as a connecting link between pipes, valves, and other equipment, providing strength, versatility, and reliability to various industrial applications. In this blog, we will explore what stainless steel flanges are, their key features, applications, and why they are a preferred choice in critical industries. Understanding Stainless Steel Flanges: A flange, in general terms, is a disc or rim used to attach one object to another. In piping systems, a stainless steel flange serves as a connecting point between two

B16.36-2006 ORIFICE FLANGES

July 12, 2023 No Comments

B16.36-2006 ORIFICE FLANGES ASME B16.36-2006 ORIFICE FLANGES CLASS 300 CLASS 600 CLASS 900 CLASS 1500 CLASS 2500 NOMINAL PIPE SIZE THICKNESS MIN LENGTH THRU HUB W/NECK THICKNESS MIN LENGTH THRU HUB W/NECK THICKNESS MIN LENGTH THRU HUB W/NECK THICKNESS MIN LENGTH THRU HUB W/NECK THICKNESS MIN LENGTH THRU HUB W/NECK NOMINAL PIPE SIZE MM INCH T LTB T LTB T LTB T LTB T LTB MM INCH 25 1 36.6 83 36.6 83 38.1 90 38.1 90 38.1 99 25 1 40 1 1/2 36.6 86 36.6 86 38.1 96 38.1 96 44.5 118 40 1 1/2 50 2 36.6 86 36.6 86 38.1 109 38.1 109 50.8 134 50 2 65 2 1/2 36.6 89 36.6 89 41.3 112 41.3 112 57.2 150 65