Seamless Steel Pipe

 There are many kinds of base materials for anti-corrosion steel pipes, such as spiral steel pipes (ssaw), straight seam steel pipes, seamless steel pipes, etc. Therefore, the quality of anti-corrosion steel pipes must be judged from the base material and anti-corrosion quality. 1. Anticorrosion (1) The appearance is delicate and the workmanship is good, without burrs. (2) The internal plastic coating process uses electrostatic adsorption to electrostatically adsorb the epoxy resin powder on the inner and outer walls of the steel pipe, which is firm, with high hygiene level, non-toxic and non-polluting. (3) External plastic coating process: The polyethylene coating has the characteristics of bright, good adhesion, hard appearance, wear resistance, smoothness, etc. It can withstand low temperature and prevent corrosion. (4) No irritating odor. 2. Steel pipe (1) There is no weld, which can be verified in a bright place. (2) Good compressive ability and not easy to deform. (3) Strong ...

 Anti-corrosion steel pipe is a kind of anti-corrosion treated pipe, mainly including 3PE anti-corrosion steel pipe (3PE coating), TEPE anti-corrosion steel pipe, epoxy coal tar pitch anti-corrosion steel pipe, high-density polyethylene jacket anti-corrosion steel pipe, etc. Among them, 3PE anti-corrosion and epoxy coal tar pitch anti-corrosion are the most popular ones in the market. The more commonly used outer wall anti-corrosion forms, then, what are the differences between 3PE anti-corrosion steel pipes and epoxy coal tar pitch anti-corrosion steel pipes? What is the method to distinguish 3PE anti-corrosion steel pipe and epoxy coal tar pitch anti-corrosion steel pipe? 1. The processing technology and processing process are different. During the production and processing of 3PE anti-corrosion steel pipe, epoxy powder is sprayed onto the heated steel pipe. During the gelling and curing process of epoxy powder, the adhesive is wound, then polyethylene is wound, and then cooled b...

 At the beginning of 2019, after half a year of order negotiation, our prison piling project with New Zealand officially started production. during the production Tianjin Xinyue Steel also has a team of professional engineers stationed in the factory for this batch of high-frequency resistance welding processing. Production and quality inspection are carried out throughout the construction process. Prior to production, due to design modifications by the end customer, the length was changed and the frequency of inspections was increased. Although it has brought great difficulty to our production, Xinyue Group has responded to the new requirements of customers, coordinated with the technical department in time, and fully meets customer requirements. In order to save costs, we provide customers with the best solution and customers. Repeated discussions to finalize the inspection plan. Due to the modification of the previous plan, resulting in delays in delivery, and fear of delaying c...

 Xinyue Steel Group received an inquiry from an Asian customer. The customer needs EN10219 S355 spiral pipe, which is mainly used for piling. Customers have high needs for steel pipe welding, and SGS is required to supervise X-rays to meet EN 10246-10 R2 during the whole producing. Xinyue always insists the integrity and win-win business philosophy, persists “Customer First, Quality Priority”. Each steel pipes Xinyue produced is strictly following the standard and arrange relevant tests. Successful finished production under the supervision of SGS. We would like to express our gratitude to the quality inspector for his seriousness and responsibility, and also to our Asia customers for their support and trust. Tianjin xinyue steel group will, as always, make our efforts for the construction of the world and ensure to delivery high-quality products to all over of the world. http://www.tjxysteel.com/news/SSAW-Spiral-Steel-Pipe-Quality-Priority-840.html

 For the manufacture of seamless steel tubes, the corresponding annealing treatment must be carried out after each cold drawing. Purpose of annealing: 1. Reduce hardness and improve machinability. 2. Eliminate residual stress, stabilize size, reduce deformation and crack tendency. 3. Refine the grains, improve the structure, and eliminate the defects of the structure. 4. Homogenize material organization and composition, improve material properties and prepare for subsequent heat treatment. The seamless steel pipe annealing furnace is to heat the steel pipe to a temperature slightly higher than Ac1, and after holding for a certain period of time, it is cooled to 550°C ~ 600°C and the heat treatment process with air cooling is called stress relief seamless steel tube annealing. The seamless steel tube annealing furnace adopts an intermediate frequency heating device, which is specially designed for the seamless steel tube continuous annealing furnace. According to the characteristics...