steel tube

 In August last year, we analysed and compiled all technical data files of African water projects with our customer. And we Xinyue Steel Group has provided customer with a very competitive price and delivery time. Due to the readjust of the project, the specifications and quantity of the products have been changed with different design drawings and the actual needs, but we Xinyue has been giving customers positive feedback and new solutions. For that, our customer has repeatedly expressed his appreciation and thankful gratitude to Xinyue’s professional services and strength. At the beginning of July this year, the customer informed us that the details of the first phase of the project have been confirmed. And this project will come to the procurement phase very soon. After that we have had several discussions about the price. Luckily, our negotiations went very smoothly. I believe is because we have already know the details about this project very well. Moreover, we have had many d...

 At beginning of June 2019, one of Xinyue Steel Group's big fans from Middle East sent a new PO again, DN2000 ductile iron pipe, which is an order temporarily received by him and will be used for replacement of current water pipeline project. According client’s requests: ductile iron pipes should confirm to ISO2531-k9, T type joint in lengths of 6 Meters, matched 100% SBR rubber gaskets. Cement lining inside of pipes should confirm to ISO4179, zinc & bitumen coating outside of pipes should confirm to ISO8179, and the rubber gasket should confirm to ISO4633. Because of the small quantity, which is too far from MOQ of new production, we’ve made purchasing plan & quality requirements for stock option at the time when we received deposit from client, we’ve also hired a third party inspection company on our own expenditure to fulfill the quality inspection for this order so that to ensure each item we’re sending to client is qualified and confirming to the standard. Since DN2000...

 The basic manufacturing process of thick wall P22 seamless alloy pipe is: melting, blank making, extrusion and annealing heat treatment. (1) Smelting P91 steel has high alloy content. How to complete the alloying of steel in a short time is the key of smelting process. P22 seamless alloy pipe is smelted by 50t power electric arc furnace + 5T medium frequency induction furnace – VOD furnace refining – LF furnace refining – VD vacuum treatment. Two medium frequency induction furnaces are used to melt alloy materials. After tapping of 5OT electric furnace, the alloy melted in medium frequency furnace is mixed into the ladle. In the process of alloying, hydrogen is mixed to solve the problems of chemical composition control and liquid steel homogenization of low-carbon high alloy steel. (2) Since the 360MN vertical extruder was put into operation, the traditional forging hole striking method is no longer applicable to the production of seamless tubes. P91, as a low-carbon high alloy m...

 I remember that this customer was a customer I met at the Middle East exhibition in 2014. The customer is doing machining and has a stable purchase quantity every year.At the exhibition site, we established a preliminary trust through face-to-face interview, and through the introduction of both parties, the customer is particularly interested in our company, and confirmed the willingness to cooperate. On the second day of the exhibition, the customer came to our booth again to discuss technical details. The customer has high requirements on dimensional tolerance and materials of steel pipes. The customer's material requirement is DIN 2448 /DIN 1629 ST52(N.R). At the same time, the size requirements are beyond the normal requirements. After 2 hours of communication, the customer confirmed the order to us at the exhibition site. Since then, we have established a long-term cooperation, and customers have visited our factory twice.This is our 42nd contract.I really appreciate this cli...

 In September of this year, we received an order for the wear-resistant tube from Malaysia. The surfacing welding wear tube is a layer of chromium carbide alloy deposited on the inner wall of the seamless steel pipe. The hardness can reach above HRC60, the chromium content is above 20, the single length reaches 12 meters, and the diameter specification is 50mm-5000mm. Advantages of surfacing welded pipes: Good wear resistance: surfacing alloy, hardness can be according to different working conditions, chromium hardness can be controlled within the range of HRC45-65, and has high toughness. High corrosion resistance, high temperature resistance and high wear resistance. Good solder-ability: In the past, high chromium alloys and rare earth alloys, in order to achieve a certain hardness, have a very high carbon content, so the weld-ability is extremely poor, and the intermediate chromium carbide is basically improved by chromium carbide. Therefore, the weld-ability is superior to that...