SSAW Pipe

 　　Relying on years of experience accumulated in the industry development, Xinyue has a perfect system in the supply of raw materials such as steel coil and steel plate. Meanwhile, through long-term expansion and development, it integrates high-quality enterprise resources in the industry, deeply explores the high-quality downstream industrial chain of raw materials, and gradually forms Xinyue's unique advantages to guarantee the product quality and delivery speed. This order requires 3000 tons of steel coils, which can be signed quickly, thanks to the sufficient stock. 　　This customer has been cooperating with Xinyue for half a year. During this period, he purchased more than 2000 tons of steel products. At the beginning of this month, the customer inquired again for 3000 tons of steel coils, with the thickness of 1.2-1.5mm and the material of s235jr. After negotiation and communication, the business specialist learned that this batch of steel coils was an urgent order. He immedia...

 　　For many years, Xinyue has remained at the forefront of the industry, stood out in many competitions, and became the unswerving choice of customers. What Xinyue does is to ensure quality, control delivery and package consignment. A series of details are handled and the attitude of serving customers attentively. 　　In mid-May, the Philippines customer placed an order of steel pipes for bridge construction , which is 8 containers. In mid-June, the goods were successfully produced in accordance with customer requirements. 　　Due to the impact of COVID 19, the international logistics capacity has dropped sharply, causing ocean freight increase too much. Moreover, due to congestion in many foreign ports,the export is contraction, containers cannot return to China as planned. the shipping space is rather difficult to book. Under the complex foreign trade situation, We have the strong logistics system to overcome the difficulties caused by the shortage of containers and the skyrocketing ...

 　　Since the end of last century, Xinyue group has been focused on the iron and steel industry for decades, gradually opening up multi-channel external publicity to boost products. Every year, Xinyue will participate in about 500 different type projects all over the world and support lots of trading inventory customers in the whole world as well. Today, with the gradual improvement of the company's system and the company's strategic planning for development, various businesses have been developed steadily, and the company's business performance has continued to improve. 　　At the end of 2020, Xinyue successfully supported mineral projects in Latin America, with a total of more than 300 pipeline systems. The product is 48 inch LSAW steel pipe with standard API 5L, the pipe welded with flange. After more than 2 months of production, the products successfully passed the strict inspection of customers, and got highly praise by customers. 　　In the middle of 2021, the customer sen...

 　　The overall coal price is stable and declining, mainly because the traders and the downstream have the expectation of increasing production after Daqing. In addition, the concentration of imported coal to Hong Kong reduces the psychological pressure, increases the base gas, reduces the coal purchase in the market, and observes the increase of production and the change of coal price after Daqing. Considering the market's expectation of increasing production, as well as the fear of price and the worry about the later policy, most traders dare not continue to purchase and ship. There are also consignors who store coal in the early stage, in order to deal with the later variables, take the initiative to reduce the sales price, leading to a drop in the port price. 　　Since last week, the inventory of Beigang has gone through a week of rapid destocking. The inventory of QinGang has dropped to 4.26 million tons, and that of Caofeidian four ports is 8.56 million tons; Coupled with seriou...

 　　Xinyue adheres to the concept of "To promote steel industry, to represent Made-in-China", and has been conscientious in decades of industry career and has continuously grown into an influential steel product supplier in China and even the world. Up to now, Xinyue has made active contributions to urban construction in more than 80 regions and countries around the world. These include but are not limited to the following representative project types: 　　1) New Zealand Prison Project 　　Based on the successful supply experience of the first batch of 4,700 tons of API 5L super long straight seam welded pipe in 2019,Xinyue received another order from the customer's 1,000-tonne steel pipe after several months. 　　2)The construction of the 2022 FIFA World Cup Stadium 　　The products was EN10210 S355 seamless pipe, square steel pipe and structural steels. From one famous EPC who is also our regular customer in Qatar. The customer was very satisfied with Xinyue's service and sh...

 　　What are the weld requirements for straight seam steel pipes? 　　1. The height of the weld burr of the electric resistance welded steel pipe (ERW pipe) 　　The external burrs of the steel pipe welds should be removed, and the remaining height should not be greater than 0.5mm. 　　According to the request of the buyer, after negotiation between the supplier and the buyer, and specified in the contract, the burrs in the weld of the steel pipe can be removed. After the internal burr of the weld is removed, the remaining height should not be greater than 1.5mm; when the wall thickness is not greater than 4mm, the depth of the scraping groove after removing the internal burr should not be greater than 0.2mm; when the wall thickness is greater than 4mm, the depth of the scraping groove should not be greater than 0.4mm. 　　2. Remaining height of weld of submerged arc welded steel pipe (LSAW pipe) 　　When the wall thickness is not greater than 12.5mm, the internal and external weld reinforceme...

 　　Cold rolling and Hot rolling are forming steel or steel plates, and they have a great influence on the structure and properties of steel. The rolling of steel is mainly hot rolling, and cold rolling is only used for the production of small section steel and sheet. 　　The main difference between hot rolled and cold rolled seamless steel tubes: 　　1. Cold-rolled formed steel allows local buckling of the section, so that the bearing capacity of the member after buckling can be fully utilized;hot-rolled steel does not allow local buckling of the section. 　　2. The causes of residual stress in hot-rolled steel and cold-rolled steel are different,so the distribution on the cross section is also very different. The residual stress distribution on the cross section of cold-formed thin-walled steel is curved, while the residual stress distribution on the section of hot-rolled or welded steel is thin film. 　　3. The torsional stiffness of hot-rolled steel is higher than that of cold-rolled st...

 　　Annealing process for seamless steel pipes: 　　The seamless annealing of the seamless steel pipe is to heat the hypo-eutectoid steel to 30~50°C above the Ac3 temperature, and to the temperature range of about 50°C above the Ac1 temperature by the eutectoid steel, and maintain sufficient time at this temperature to become Vostian. 　　After the single-phase structure (hypo-eutectoid steel) or the Worth field body and the snow-bearing carbon mixed structure, the steel is softened by furnace cooling to obtain the best ductility and fine grain structure of the steel. 　　Annealing treatment of cast iron 　　Almost all castings will generate thermal stress during the cooling process. During the heat treatment process, internal stress will be formed after special normalization and annealing. The main reason for the internal stress is the internal flesh thickness of the casting. 　　Different, in the rapid cooling process due to the difference in heat drop, different thickness of the meat will ...

 　　Nowadays, hot-dip galvanized seamless pipe, as a commonly used type of fire-fighting pipeline, plays an irreplaceable role in the field of fire safety due to its high pressure-bearing strength. To this day, hot-dip galvanizing is still the most common and effective process measure among steel anticorrosion methods. The principle of galvanizing to protect steel is: in addition to forming an outer covering layer to block the corrosion of the steel pipe by air and moisture, it also uses the electronegativity of steel than zinc, and protects the steel by preferentially oxidizing the galvanized layer and sacrificing zinc. . Therefore, there is no way to compare the anti-corrosion ability of ordinary steel pipes. Even the steel that has been treated with anti-corrosion means such as oil and paint, the anti-corrosion ability cannot be compared with that of hot-dip galvanized seamless pipes. 　　The temperature range of galvanized seamless pipes is very wide: 　　Generally speaking, the tem...

 　　1. Construction preparation before use of LSAW steel pipe 　　Pipe trenches must be dug, pipe wells must be built, all kinds of straight seam steel pipes must be in place, and all kinds of tools needed, including welding machines, cutting machines, electric hammers, polishing machines, etc., must be fully prepared . Only after doing a series of preparations can the installation begin. 　　2. Installation of LSAW steel pipe 　　According to the design of the drawing, the pipe support is prefabricated according to the site conditions, and then the material is cut according to the design and site, and then the groove is polished with a polishing machine, and then welded. 　　Three, use quality requirements 　　1. The deviation of the vertical installation standpipe should be less than 3 mm per meter, and the deviation of the horizontal installation should be less than 1 mm. 　　2. The branch pipe shall not be welded at the welding seam, and there shall be no welding seam at the bend. . 　　3. Th...

 　　Defects produced in the actual production of high-frequency welded pipes (erw steel pipe) are sometimes not caused by one reason, but are usually the result of a combination of multiple factors. Welding defects may also be caused by other reasons outside the welding area, so many factors should be considered comprehensively for defects , The problem can be solved by analyzing the reasons carefully. 　　Inclusions 　　The formation mechanism of inclusion defects is that metal oxides are not extruded with molten metal, but are sandwiched on the welding surface. 　　These metal oxides are usually formed on the surface of the molten metal at the V angle. When the strip edge approaching speed is lower than the melting speed, and the melting speed is higher than the discharge speed of the molten metal, the apex of the V-shaped opening will form containing molten metal and The inclusion of metal oxides cannot be completely discharged after normal extrusion. The surface of the clean metal sol...