steel tube

 　　Stainless steel has the ability to resist atmospheric oxidation-rust resistance. At the same time, it also has the ability to resist corrosion in media containing acid, alkali and salt-corrosion resistance. 　　Stainless steel is not that it cannot rust, but it is not easy to rust. 316 stainless steel will rust after a long time. 　　Due to the addition of Mo element, 316 stainless steel has greatly improved its corrosion resistance and high temperature resistance. The high temperature resistance can reach 1200-1300 degrees, and it can be used under harsh conditions. 　　The corrosion resistance of stainless steel varies with the chemical composition of the steel itself, the state of protection, the conditions of use and the type of environmental media. 　　For example, 304 steel pipe has excellent anti-corrosion ability in a dry and clean atmosphere, but when it is moved to the seaside area, it will quickly rust in sea fog with large salt content; while 316 steel pipe has performance g...

 　　Xinyue has already been engaged in the steel industry for decades, with rich production and trade experience, including fluid transportation, piling construction and other fields. In addition, we have extensive production experience in high temperature and high pressure, boiler fluid transportation projects as well. 　　In November of last year, I received an inquiry from a Dutch customer regarding ASTM A672 GRADE C65 CLASS 22 for medium-temperature and high-pressure electrofusion welded pipes, two specifications, 36” and 30”, total 114 tons. In the early stage, customers were not clear about the production process of steel pipes and their respective advantages, then we asked technicians to make a professional analysis and explanations. Finally, we recommended customers to choose the longitudinal submerged arc electric fusion welding process. What's more, we provided the material list and photos of previous order shipment to the customers for reference. 　　Due to this order was an ...

 　　In the early of the end of March, the entire batch of scaffolding steel pipes were shipped after the inspection by the quality inspection team and the sampling test from customers. 　　The customer of this cooperation is a Zhejiang trader and the end user is a construction company in New Zealand. The cooperation with upstream customers and end users started two years ago, and this was the third time to return orders. 　　The products shipped were Xinyue's superior products, hot-dip galvanized scaffold steel pipes, which were used in New Zealand, and were required to be cut into lengths range from 1 meter to 5.5 meters. We had two successful supply experiences before. After this order was finalized, we provided timely feedback to customers in accordance with the cutting, galvanizing, spraying and packaging schemes provided. Each stage of the process was provided feedback to the customer in time, quality inspection inspected throughout the process, and large samples randomly selected ...

 　　1. Regardless of the rotation of the straight seam steel pipe or the fixed cutting nozzle, it should be kept perpendicular to the surface of the straight seam steel pipe. After cutting, the cutting nozzle is gradually inclined forward to an angle of 70°-80° with the tangent of the cutting point. 　　2. When gas cutting to fix straight seam steel pipe, generally start from the lower part of straight seam steel pipe. 　　3. The selection of cutting nozzle and oxygen pressure is related to the thickness of the straight seam steel pipe, and can be selected according to the actual situation. 　　4. The distance between the cutting nozzle and the surface of the straight seam steel pipe should be determined according to the length of the preheated flame and the thickness of the straight seam steel pipe, generally 3-5mm from the end of the flame core. 　　5. After the straight seam steel pipe is cut, use a file to remove the iron oxide slag at the incision to make it smooth and clean. At the sa...

 　　Elbows are used to change the direction of the pipe. The bending angles of commonly used elbows are 90 °, 45 ° and 180 °. The 180 ° elbow is also called a U-shaped elbow. There are also elbows with special angles, but the number is very few. 　　1. Cast iron elbow 　　Malleable cast iron elbow is the most common thread elbow. This kind of pipe is mainly used for heating, water and gas pipes. In the process, except for low-pressure pipelines that need to be dismantled frequently, other material pipelines are rarely used. The specifications of Marshall elbow are relatively small, and the commonly used specifications range from 1/2 to 4 inches. According to their different surface treatments, they are divided into galvanized and non-galvanized. 　　2. Elbow 　　Pressed elbow, also called stamped elbow or seamless elbow, is made of high-quality carbon steel, stainless acid-resistant steel and low-alloy steel seamless pipe in a special mold. The bending radius is one and a half times the nom...

 　　At the end of March, the carbon steel seamless tube was sent to Laem Chabang, Thailand successfully, under the cooperation of Xinyue sales team,technical team, production team and documentation team. 　　This order came from an regular customer who is a large trader in South Korea. After the first order cooperation last year, the customer had a new understanding and dependence on Xinyue. Customers would always be the first time to send inquiries to Xinyue and informed the details of the inquiry. This time, the order was144 tons of ASTM A106 GR B carbon steel seamless tubes, which need to be shipped to Laem Chabang, Thailand. The third-party inspection was required for each order by this customer. 　　Xinyue has always been presenting an image with professional and honest business reputation to overseas customers. To help customers grow and to achieve a win-win situation is a business principle that our company adhere to. After signing the contract with the customer, the sales team c...

 　　Through the active communication of Tianjin Xinyue and the full cooperation of customers, the 1900 ton square tube to Ghana in Africa has been ready to delivery. 　　The surface of square rectangular pipe is galvanized, and the steel pipe needs to be cut into 5.5 meters. The tolerance requirements of customers are very strict, which must be strictly controlled to plus or minus 0.03mm, In order to better control the tolerance, Xinyue starts to control the raw materials and increases the proportion of production and testing. Although it will increase the processing cost, in order to meet the customer's demand and order requirements, Tianjin Xinyue is willing to reduce the profit and ensure to meet the customer's technical requirements, so as to achieve a long-term cooperative friendly relationship. 　　At the end of April 2021, we received the feedback from the customer. The terminal was very satisfied with the galvanized rectangular tube produced this time, and intended to cooper...

 　　At the end of April, Xinyue successfully won the South American ASTM A252 GRADE3 maritime piling project. 　　More than one year has passed since receiving the customer's inquiry. At the end of 2019, we received the bidding documents and RFQ from this customer.During the initial communication, we enthusiastically introduced our past pile pipe projects to our customers, including but not limited to our supply of South American Arcelor Mittal marine pile pipes, the supply of 40m coated spiral pipe projects in Africa, and New Zealand X65 large diameter long piles, offshore jacket supply for Middle East oil platform. Supported by a mature technical team, we have gradually submitted various technical documents, along with factory qualifications, export records of similar products etc , which required in the process of customer bidding. 　　With the outbreak of the global epidemic, the project was reluctant to shelve. Until the economic recovery in 2021, the project began to be promoted. ...

 　　The difference between stainless steel pipe and stainless steel pipe fittings: 　　1. Different production methods. 　　Stainless steel products have no fixed styles and specifications, and are generally custom-made stainless steel pipes to cater to customers' stainless steel products. Therefore, the production method is not fixed, and everything is subject to the customer's production requirements. 　　Stainless steel pipe production methods are divided into two types, one is standard parts, which are generally used for connection, control, reversing, shunting, sealing, support and other functions. This kind of stainless steel pipe fittings have fixed styles and specifications, so there is a fixed production mode. The other is customized parts, which are stainless steel pipe fittings made by deep processing of stainless steel pipes according to the customer's processing needs. In this way, there is no fixed production method that needs to be customized according to demand lik...

 　　In February 2021, Xinyue was fortunate to be awarded a project undertaken by a foreign customer for mine construction. The customer sent more than 20 pages of drawings, and Xinyue needed to customize the drawings. According to the drawings, the product is a welded component, which is composed of steel pipes, flanges, valves, heads and tees, and is used to connect mineral mining pipelines. The product has strict requirements for welding wages and welding methods, and requires 6G qualified welders to strictly follow the API 1104 standard for welding, and perform RT, UT and PT inspections on the finished products. The inspection standards strictly follow ASME 31.3, and CWI inspectors are required to report on the experiment. Perform authentication. 　　After 2 months production, the goods have been finished producing this month. Taking into account the particularity of the goods, it is important to pack and protect the products from damage. After a meeting between the logistics depar...