1. It is generally suitable for welding of thin steel pipe below 6mm, with the characteristics of beautiful and elegant weld molding and small welding deformation.2. The maintenance gas is argon with the purity of 99.99%. When the welding current is 50-50A, the argon flow rate is 8-10L/min, and when the current is 50-250A, the […]
Galvanized pipe, also known as galvanized steel pipe, is divided into hot dip galvanized and electric galvanized. Hot dip galvanizing layer thick, uniform coating, strong adhesion, long service life. Electroplating cost is low, the surface is not smooth, corrosion resistance than hot dip galvanized pipe is poor.Galvanized steel tube: hot dip galvanized steel tube steel […]
In fact, the vessels is a big category among many steel plates, which has very special composition and many excellent properties. At present, this kind of vessels plate is mainly used to make pressure vessels in the market. For different situations and different uses, the corresponding materials to be made are also different. This kind of […]
Metal pipeline construction points for attention in winter, the biggest characteristic of winter construction I think is that the temperature is relatively low, in the welding operation must pay attention to the temperature, the need to determine the temperature of the welding position before welding, in the case of lower than the process requirements of […]
The nondestructive testing of steel mainly involves ray testing, ultrasonic testing, magnetic particle testing, penetration testing and eddy current testing. 1. Radiographic Detection (RT)X-ray testing refers to the non-destructive testing method that uses X-ray or gamma ray to penetrate the specimen and uses film as the equipment for recording information. This method is the most […]
our factory have Φ720 rolling can produce big size seamless pipes directly . such as API5L X65QS PSL2 OD610*12.7mm by hot rolled producing Length 12m API5L X65QS PSL2 chemical composition: API5L X65QS PSL2 Mechanical Properties www.wldsteel.com [email protected]
Hydrogen sulfide H₂S is an inorganic compound that is colorless, flammable, soluble in water acid gas, hydrogen sulfide corrosion refers to the oil and gas pipeline containing a certain concentration of hydrogen sulfide (H2S) and water corrosion. H₂S dissolves in water and becomes acidic, leading to electrochemical corrosion and local pitting and perforation of pipelines. The hydrogen atoms […]
Heat-resistant steel refers to the steel that works at high temperature and has excellent thermal strength and thermal stability. Thermal strength refers to the ability to resist creep and fracture at high temperature, and thermal stability refers to the ability to resist oxidation and corrosion of gaseous media at high temperature. People usually refer to the heat-resistant […]
Le molybdène est un élément d'alliage clé dans les aciers ferrites résistant au fluage et fonctionnant à des températures allant jusqu'à 530°C. Les principales applications de l'acier résistant au fluage se trouvent dans les centrales électriques et les usines pétrochimiques, où les turbines à vapeur nécessitent de grandes pièces forgées et moulées, et où les appareils à pression, les chaudières et les systèmes de tuyauterie nécessitent des tubes, des plaques et des accessoires de toutes sortes [...]
La forme de connexion du tube d'échange thermique et de la plaque tubulaire comprend principalement l'expansion, le soudage, le soudage d'expansion, etc. Le joint de dilatation fait référence à l'expansion de la performance d'étanchéité et de la résistance à la traction de la connexion entre le tube d'échange de chaleur et la plaque tubulaire. Il s'appuie sur la déformation plastique de l'extrémité du tube pour résister à la [...]
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