There are many kinds of Q235B LSAW welded pipe quality inspection methods, among which the physical method is also the most commonly used inspection method, physical inspection is the use of some physical phenomena for determination or inspection methods. Material or Q235B LSAW welded pipe internal defects inspection, are generally used non-destructive flaw detection methods. The current nondestructive flaw detection has magnetic flaw detection, ultrasonic flaw detection, ray detection, penetration flaw detection, etc..

How to control the quality of spiral steel pipe? The piercing temperature of steel billet varies depending on the raw material. The temperature of most hot expanded welded pipes is about 1200℃, and slightly lower when the carbon content and other alloying elements are higher.

Stainless steel seamless pipe welding and polishing technology is a widely used technology for stainless steel pipe welding and surface treatment. Stainless steel seamless pipe welding and polishing technology and products related knowledge and application. I. Stainless steel seamless pipe welding 1, seamless stainless steel pipe welding process

Stainless steel welded pipe processing process is prone to cause certain changes to the internal or external stainless steel welded pipe, Centerway Steel as a 13 years of stainless steel welded pipe professional manufacturers, for you to summarize some of the knowledge about stainless steel welded pipe processing for reference:

Stainless steel stainless steel welded pipe manufacturers steel plate ultrasonic flaw detection: used to produce large diameter self-seam submerged arc welded steel pipe steel plate into the production line, the first full plate ultrasonic inspection; both sides of the steel plate milling: through the milling machine on both edges of the steel plate double-sided milling, so that it arrives at the required plate width, edge parallelism and bevel shape.

Stainless steel welded pipe made to order quality inspection methods have a variety of methods, including physical methods are also commonly used inspection methods, physical inspection is the use of some physical phenomena for determination or inspection methods. Material or stainless steel welded pipe internal defects inspection, generally using non-destructive flaw detection methods. The current nondestructive flaw detection has magnetic flaw detection, ultrasonic flaw detection, ray detection, penetration detection, etc..

Nowadays the application of stainless steel welded pipe is very wide, but in the process of using stainless steel welded pipe there will be rust, rusty straight seam welded steel pipe is going to affect its normal use, so the stainless steel welded pipe found on the rust situation needs to be cleaned up in a timely manner, then today to give you several ways to clean the straight seam welded steel pipe, you can learn about it:

Stainless steel welded pipe part of the surface of the “rust” phenomenon is normal, with the Centerway to understand. Although in theory the welded pipe is not rust, but rust is not a welded pipe, may be a problem with the steel. Such views on the welded pipe belongs to the lack of understanding or understanding of one-sided. In fact, the welded pipe will rust under certain conditions. Theoretically, the welded pipe has the ability to resist atmospheric oxidation - that is, stainless steel, but also has the ability to resist corrosion in the medium containing acid, alkali, salt - that is, corrosion resistance. But the size of its corrosion resistance is with the steel itself chemical composition, plus mutual state, use conditions and the type of environmental media and change. Such as 304 steel pipe, in the dry clean atmosphere, there is absolutely excellent corrosion resistance, but it will be moved to the seaside areas, in the sea spray containing a large amount of salt, long-term so it will rust; and 316 steel pipe is good performance. Therefore, not any kind of welded pipe, in any environment can resist corrosion, not rust. Stainless steel welded pipe rust is mainly reflected in the surface of the brown rust spots (points) and other phenomena.

Stainless steel welded pipe liquid immersion methods are the following 10 kinds: 　1, ordinary processing, general acid is enough, and then in the water cleaning. 　2, deeper: the program is a little more, acid washing, alkali washing, water washing, polishing, waxing, etc. 　3, precision: ultrasonic degreasing to oil, the surface to be sprayed, grinding, oxidation, rust treatment:

304 stainless steel welded pipes are known for their simple production process, high efficiency, variety in specifications, and lower capital investment. However, their pressure resistance is generally lower than that of seamless stainless steel pipes.