In the piping system, the stainless steel elbow is a pipefitting that changes the direction of the pipe. According to the angle, there are three kinds of most commonly used 45° and 90°180°, and other abnormal angle stainless steel elbows such as 60° are also included according to engineering needs. Stainless steel elbows are made of cast […]
Development trend of stainless steel elbow
The difference between the stainless steel elbow and the carbon steel elbow is mainly due to the difference in material. The chemical composition of the elbow will keep the surface of the elbow from rusting for a long time and will not be corroded. In a piping system, an elbow is a pipe that changes the direction of the […]
Chemical composition and heat treatment of duplex stainless steel
Duplex stainless steels require good overall mechanical properties. These properties are achieved by the selection of steel with the appropriate composition and by heat treatment by quenching and high temperature tempering. In the quenched and tempered state, the dual-phase steel has low carbon content, high plasticity and toughness, but low strength; the high carbon content is […]
What is a rolled flange?
What is a rolled flange? The rolled flange is cut into slats by the middle plate, and then rolled into a round welded joint and then processed by a flattening process. The coil is made up of cold and hot coils. After processing into a circle, the water line, bolt holes, and stops are processed. This is […]
High pressure butt-welded flanges
High-pressure butt-welded flanges are suitable for pipelines with high pressure or temperature fluctuations or for high-temperature, high-pressure and low-temperature pipelines, as well as for pipelines that are expensive, flammable, and explosive. The high-pressure butt-welding flange is not easy to be deformed, has good sealing and is widely used. The nominal pressure PN is about 16 MPa. […]
Flat welding flange and butt welding flange
What is a flat welding flange? A flat welded flange is a type of flange that is joined to a vessel or pipe by a fillet weld. It is an arbitrary type of flange. According to the degree of integrity of the connection between the flange ring and the straight section, the design is checked […]
The difference between cast flange and forged flange
What is a forging flange? Forging is a process in which a metal is plastically flowed to form a desired shape. The metal does not change in volume after plastic flow by external force, and the metal always flows to the portion with the least resistance. Forged flange is the best mechanical product in flange products. […]
Five factors affecting the brightness of stainless steel pipe fittings during annealing
Annealing is a heat treatment process in the processing of stainless steel pipe fittings. The pipe is slowly heated to a certain temperature for a sufficient period of time and then cooled at a suitable speed. The brightness of the product after the production of stainless steel pipe fittings determines the quality of the product. […]
Hydrogen cracks in stainless steel welding defects
The causes of hydrogen crack formation in welding arc welding of stainless steel are mainly caused by three factors, namely, the brittle and brittle hard and brittle structure of hydrogen produced by the welding process, the tensile stress acting on the welded joint, and often when the temperature is up to the normal environment. In […]
Lamellar tearing defect of stainless steel plate in welding
Stratified tears may sometimes occur in rolled steel plates with poor thickness ductility. The main characteristic of lamellar tear is that it appears in the base metal parallel to the weld fusion boundary and the surface of the plate, usually in the T weld and fillet welds. Cracks can occur at the toe or root of the […]
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