ERW Steel Pipe

With the development of science and technology, spiral welded pipes are widely used in the construction of tunnels, docks, bridges, etc., especially the use of large-diameter welded pipes. In recent years, more and more projects have adopted spiral welded pipes. The quality of the welds has a great influence on the quality of the spiral pipes. Therefore, spiral pipe manufacturers have high requirements for the quality of the welds. People can understand the factors that affect the quality of the welds, so that we can better process the welds of spiral pipes and help people choose high-quality spiral pipes. How to improve the weld quality of spiral pipe? 1. Control of welding temperature The size of the welding temperature will affect the welding effect, and the quality of the weld will be affected. During the welding process, the temperature must be well controlled. 2. Removal of welding scars After welding and extrusion, weld scars are prone to appear at the weld seam, which will affe...

 Carbon steel pipe is a pipe widely used in many fields and has many advantages and some disadvantages.So what are the advantages and disadvantages of carbon steel pipes? Advantages of carbon steel pipes: Carbon steel pipe is an alloy steel pipe composed of carbon and iron, which has many excellent properties and characteristics. First of all, carbon steel pipes have high strength and rigidity, and can withstand high pressure and heavy loads. This makes carbon steel pipe ideal for many engineering and structural applications, such as buildings, bridges, oil and gas transmission, and more. Secondly, carbon steel pipe has good corrosion resistance and can resist the erosion of harsh environments and chemicals. This makes carbon steel pipes widely used in marine engineering, chemical industry and other fields. In addition, carbon steel pipes have excellent thermal and electrical conductivity, making them widely used in manufacturing industries and power engineering. Disadvantages of c...

Project location：Southeast Asia Product：Stainless steel pipe & fittings, UPVC pipe & fittings Standard and material：316L & UPVC Specifications：DN40-DN800mm & DN15-DN250mm Application：Water transmission These two order products are stainless steel pipes and fittings, UPVC pipes and fittings, which are supplementary quantity orders for the previously supplied projects. We received inquiries from customers at the end of March 2023 and asked for the fastest delivery time, because this project It is in progress now, so we need to prepare the goods and send them to the project site by air as soon as possible. After submitting the quotation and reviewing the appropriate inventory plan to the customer, the order was confirmed at the beginning of May. We also prepared the goods as quickly as possible, and arranged for a third party to conduct strict testing and counting, and arranged the nearest flight delivery to customers. https://www.xysteelpipe.com/upvc-pipe-and-fittings-del...

Project Location: Australia Product: SMLS steel pipe Specification: 114.3×8.56x5800mm Standard & Grade: ASTM A106 GR.B Usage: for small liquid transmission project In this May, Xinyue received a new enquiry of SMLS steel pipes which required urgent delivery time on or before July to Australia. The enquiry is for clients’ own use, for a small liquid transmission project. The product is SMLS DN100 SCH80 12M, the quantity is 25tons, loaded by one 20ft container. However, the customer has not had good purchasing experience in China before, so they pay more attention to the quality of seamless pipes. In order to reassure customers, Xinyue offered the third-party inspection and provided the real-time photo reports per week. And in order to meet the customer’s requirements on the delivery date, Xinyue immediately checked the inventory, and urgently contacted the freight forwarder to determine the earliest shipment date. In Mid June, the shipment safe departed as scheduled. Both the custom...

 Carbon structural steel pipe is a seamless pipe that does not contain other alloying elements except for carbon (C) elements and a certain amount of silicon (Si) (generally not exceeding 0.40%) and manganese (Mn) alloying elements for deoxidation. . Such steels must guarantee both chemical composition and mechanical properties. The content of impurity elements such as sulfur (S) and phosphorus (P) is generally controlled below 0.035%. Structural seamless pipe pickling In addition to stripping the iron oxide scale during pickling, hydrogen also diffuses into the carbon structural steel pipe matrix and gathers at impurities or pores. It leads to an increase in internal stress, reduces the plasticity of carbon structural steel pipes, and increases the brittleness of carbon structural steel pipes. This effect is called hydrogen embrittlement. Hydrogen embrittlement is mainly affected by the diffusion rate of hydrogen atoms. The diffusion rate of hydrogen is related to the following fa...

 Welding method of carbon steel pipe: Carbon steel pipe (CS pipe) can be joined using a variety of welding methods, including the following: 1. Manual arc welding (SMAW) Manual arc welding is a relatively common welding method. In manual arc welding, a hand-held electrode is used to introduce current into the arc to join steel pipes together. 2. Gas metal arc welding (GMAW) MIG welding is a commonly used automatic welding method. Inert gas or active gas can be used for shielding during MIG welding to avoid the influence of air on welding quality. 3. Melted Pole Powder Welding (PMAW) Fusion electrode powder welding is an efficient welding method, which is suitable for welding large diameter or thick wall carbon steel pipes. 4. Plasma welding (PAW) Plasma welding can form deep welds on carbon steel pipes and is suitable for special welding needs. Precautions for carbon steel pipe welding: When welding carbon steel pipes, the following points need to be paid attention to: 1. Pretreatm...

The properties of seamless tubes include yield point, tensile strength, hardness index, reduction of area, and elongation after fracture. 1. Yield point For metal materials with yield phenomenon, the stress at which the sample can continue to elongate without increasing the force (keep constant) during the stretching process is called the yield point. If the force drops, the upper and lower yield points should be distinguished. The unit of yield point is N/mm2 (MPa). 2. Tensile strength The stress (σ) obtained by dividing the force (Fb) that the sample bears when it is broken by the original cross-sectional area (So) of the sample during the stretching process is called the tensile strength (σb), and the unit is N /mm2 (MPa). It represents the ability of metal materials to resist damage under tension. 3. Hardness index The ability of metal materials to resist the indentation of hard objects on the surface is called hardness. According to different test methods and scope of application,...