steel pipe

The bright heat treatment of seamless tubes does not have to be a vacuum furnace. It is heated in a protective atmosphere, which is what we often call a continuous bright quenching furnace. The protective gas is pure hydrogen or a mixture of nitrogen and hydrogen, which can also decompose ammonia into gas. There is another kind, quenching in bright quenching medium is also possible. The vacuum heat treatment refers specifically to the treatment in a vacuum environment, but there are many treatments in a vacuum environment: quenching, tempering, annealing, and some include sintering and brazing. It should be noted that vacuum heat treatment will not necessarily be bright, but it can be done if required. The difference between seamless tube quenching and vacuum heat treatment: Vacuum heat treatment is a heat treatment under the isolation of air, which can avoid oxidation and decarburization of the surface of the workpiece to the greatest extent, and quenching is only one way of heat trea...

Project location：Australia Product：seamless steel pipe Standard and material：ASTM A106 GR.B Specifications：DN20 – DN250 SCH40/SCH80 Usage：Stock supplement Inquiry time：2022.4.8 Order time：2022.4.11 Shipping time：2022.5 At the beginning of April 2022, Tianjin Xinyue again received a supplementary order for seamless steel pipe inventory from regular customers in Australia: the executive standard and material are ASTM A106 gr.b, the diameter range is dn20-dn250, the wall thickness range is Sch 40 – sch80, the length is 6m, a total of more than 20 specifications and about 90 tons. Although the order volume is small and the specifications are complicated, Tianjin Xinyue team has never despised any order and customer. Thanks to the strong resource integration strength, Tianjin Xinyue reported all the dimensions required by the customer as soon as receiving the order, and the customer readily confirmed the contract within 3 days. At present, all goods are in production and will ex-mill at the...

Project Location：Middle East Product：SMLS&SSAW Specification：610*9.53*6000MM;813*9.53*6000MM Standard and steel grade：API 5L GRB Usage：Water transmission Inquiry time：2022.03.28 Sign time：2022.04.05 Delivery time：2022.04.25 Arrival time：2022.06.15 For our customers, the most important thing of this order is the delivery time. The customer informed the urgency of the order when making an inquiry. Only when the delivery date is met can the order be finally won from his customer. From the moment of receiving the inquiry from the customer, we correspondingly found the solution based on stock coils & billet. In order to better meet the urgent needs of the customer, we promised the customer to prepare all raw materials within 10 days, advance all production plans, and complete the steel pipe production within one week(which normally need 35 days production time have been finished within 25 days). Such a solution enables our customers to finally get the order and give the order to Xin...

Project location：Malaysia Product：ERW galvanized steel pipe, scaffolding couplers and metal deck Standard and material：BS1139 Specifications：48.3x4x6000mm, 210x45x1x2000mm, 210x45x1x 3000mm Application：Stock Inquiry time：25th Aug 2022 Order time：28th Sep, 2022 Shipping time：23rd Oct 2022 Estimated arrival time：Nov 2022 The customer is a supplier of equipment for oil and gas projects from Malaysia, it is a stock order. This is the first time for the customer to cooperate with Xinyue. Xinyue received the inquiry at the end of August, and it only took one month to confirm the order, it means the customer’s full trust in Xinyue. During the quotation period, there was another supplier from Cangzhou who competed with Xinyue. The customer informed that the price of Xinyue’s was much higher than this supplier. After discussed with customer , Xinyue confirmed that the price was for malleable cast iron couplers, while Xinyue supplied galvanized drop forged couplers to match the galvanized pipes....

When the carbon steel tube is in use, the oxide film on the surface is not easy to fall off. Usually, oxide films are produced in a heating furnace. So, how to clean the oxide film on the surface of the carbon seamless steel tube? 1. Iron oxide scale cleaning machine treatment The scale cleaning machine is mainly composed of steel brush roller, driving device, high pressure water system, cooling water system and clamping device. Two rollers with steel wires (called steel brush rollers) are installed on the roller table seat. The steel brush rollers rotate at high speed in the opposite direction of the slab running. The scale cleaning machine is suitable for many steel grades, but it cannot clean the scale thoroughly enough. 2. Water burst pool The water blasting pool uses circulating water at room temperature as the cooling medium, puts the high-temperature billet into the pool, and uses "water blasting" to remove the oxide scale on the surface of the billet. The principle is...