Elbow for Power Engineering

The elbow is a kind of pipe fitting used at the turn of the pipeline. Among all the pipe fittings used in the piping system, the proportion is relatively large, about 80%. Generally, different forming processes are selected for elbows of different materials or wall thickness. The commonly used seamless elbow forming processes in manufacturing plants include hot pushing, stamping, and extrusion. So do you know what its hot forming process is? Let's follow the editor of Elbow for water treatment to have a simple understanding!

In pipeline systems, elbows are fittings that change the direction of the pipeline. According to angles, there are three most commonly used types: 45 ° and 90 ° and 180 °. In addition, according to engineering needs, there are also other abnormal angle elbows such as 60 °. The materials of elbows include cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals, and plastics. The methods of connecting to pipes include direct welding (the most commonly used method), flange connection, hot melt connection, electric melt connection, threaded connection, and socket connection. According to production processes, it can be divided into: welded elbows, stamped elbows, push made elbows, cast elbows, butt welded elbows, etc. Other names: 90 degree elbow, right angle bend, etc.

Tubing is mainly used to connect drill collars and drill bits and transmit drilling power; A casing is a steel pipe used to support the walls of oil and gas wells, ensuring the normal operation of the entire well during the drilling process and after completion.

High pressure boiler pipes are used for heating surface pipes of low and medium pressure boilers (with a working pressure generally not exceeding 5.88Mpa and a working temperature below 450 ℃); Used for heating surface pipes, economizers, superheaters, reheaters, petrochemical industry pipes, etc. of high-pressure boilers (with working pressure generally above 9.8Mpa and working temperature between 450C and 650 ℃).

A concentric reducer is a type of pipe that is directly welded to a steel pipe. The main manufacturing standards for concentric reducers are generally GB/T12459, GB/T13401, ASME B16.9, SH3408, SH3409, HG/T21635, HG/T21631, and SY/T0510. Corresponding to the concentric reducer, there are also eccentric reducers made of carbon steel, alloy steel, and stainless steel.

Hydraulic support pipes are made of high-quality carbon structural steel with appropriate addition of one or several alloy elements to improve the strength, toughness, and hardenability of the steel. After being made, this type of steel usually needs to undergo heat treatment such as quenching and tempering, chemical heat treatment, and surface quenching.

Equal diameter cross, commonly referred to as a professional term, refers to pipe fittings and pipeline connectors, used in main pipelines where branch pipes are required. Equal diameter cross is a type of cross, which can be divided into two types: general equal diameter cross and differential diameter cross. Named because the four ends can be connected to the pipe. In industry, there is a high pressure requirement for this type of pipe fitting, with a high pressure of up to 600 kilograms. In daily life, the pressure of water pipes is relatively low, usually 16 kilograms. Equal diameter spools can be used in various industries and can be divided into the following categories according to different types: 1. According to the production method, it can be divided into top making, pressing, forging, casting, etc. 2. According to manufacturing standards, it can be divided into national standards, electrical standards, water standards, American standards, German standards, Japanese standards, Russian standards, etc. An equal diameter cross fitting with the same diameter at both ends and a branch pipe with a different diameter from the other two is called a reducing cross. The representation method is as follows: for an equal diameter cross, for example, a "T3" cross represents an equal diameter cross with an outer diameter of 3 inches. For reducing spools, such as "T4 × four × 3.5 "represents a reducing cross with a diameter of four inches and a diameter of 3.5 inches. The material is generally 10 # 20 # A3 Q235A 20g 20G 16Mn ASTM A234 ASTM A105 ASTM A403, etc. The cross has an outer diameter range of 2.5" -60 ", and is welded from 26" -60 ". The wall thickness is 28-60mm. The pressure classes are ch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS

The double flange limit expansion joint is composed of main parts such as body, sealing ring, gland and extension shortening pipe.On the basis of the original performance of the loose sleeve expansion joint, a limit device was added, and the maximum expansion was locked with a double nut.The pipe can expand and contract freely in the allowed expansion and contraction quantity, once exceeds its maximum expansion and contraction quantity, plays the limit position, ensures the safe operation of the pipe, especially suitable for the connection of the pipe with vibration or certain inclination and turning.

XUVAL lift check valve is applicable for medium steam,water,oil etc.it can prevent fluid from backflow by deadweight of disc and the pressure differences of fluid.