A 105 welding neck flange
Flat welding and butt welding refer to the welding mode when flange and pipeline are connected. Flat-welded flanges need only one-sided welding, and do not need to weld pipes and flange joints. Flat-welded flanges are generally used in low and medium pressure pipes. Welding neck flange welding installation needs flange double-sided welding, generally used for the connection of medium and high pressure pipelines. Welding flange is used to reduce stress concentration. Welding neck flange is the most common butt welding flange. Welding neck flange can greatly save space and reduce weight. It also keeps the joint from leaking and has good sealing function.
Welding neck flange processing requirements:
1. Welding neck flange butt weld should be heat treated. At the same time, 100% X-ray or ultrasonic flaw detection is required, and X-ray or ultrasonic flaw detection meets the requirements of the standard. The welding flange is manufactured in strict accordance with the welding specifications and skills, and the whole process conforms to the corresponding international production specifications and requirements.
2. Control of raw material quality for Welding neck flange production. The steel plate should be inspected by ultrasonic wave, without the defect of delamination, so as to ensure good quality and function. Production and inspection in accordance with the required quality requirements to ensure that the production and use of steel plates without quality problems.
3. Cut the steel into strips along the rolling direction, then weld it into a circular ring, and make the outer surface of the steel form a cylinder of the ring. In the production of Welding neck flange, the steel plate can not be directly machined, and the process must be selected for manufacturing and processing.
Advantages of Welding neck flange:
1. When the pipeline is faulty, when using butt-welded flange, it is convenient to disassemble, inspect, check and determine.
2. Connect and manage the pipeline, and make the pipeline firmly maintain the tightly sealed function of the appellation.
3. When there is a problem in a certain section of the pipeline in the project, it is easy to replace the butt welding flange.
Flange A105 is a common carbon steel flange. A105 Welding neck flange is the most widely used flange in all flanges and has the largest order quantity. The main reason is that A105 flange has obvious advantages, mainly reflected in the following aspects:
1. Good thermal insulation: A105 Welding neck flange has good thermal insulation because of its low thermal conductivity.
2. High impact resistance: A105 Welding neck flange has been significantly improved compared with other solid wall tubes because of its unique impact strength function, and its ring stiffness is 1.3 times that of the solid wall.
3. Good corrosion resistance: Except a few hydrogenating agents, it can resist the corrosion of various chemical media. The A105 Welding neck flange has excellent acid, alkali, corrosion resistance, no rust, no corrosion, no bacteria, no electrochemical corrosion.
4. The service life of A105 Welding neck flange pipe is longer than 50 years under rated service temperature and pressure. It has anti-ultraviolet and anti-radiation properties, so that the product will never fade.
