SSAW Pipe

In automobiles, there's a material that may go unnoticed, but it's crucial—like the car's "blood vessels" and "skeleton," supporting the powertrain and ensuring safety. That material is seamless steel pipe. From the engine to the exhaust system, from the chassis to the drive shaft, seamless steel pipes play a role in almost every critical part of a car.Compared to welded pipes (such as ERW pipes), seamless steel pipes do not have the potential weak point of weld seams. What is a seamless steel pipe? A seamless steel pipe, as the name suggests, is a steel pipe without any weld seams. It's generally made by piercing a solid steel billet and then hot-rolling or cold-drawing it. The absence of weld seams means the entire pipe is a single, continuous piece, making it stronger, more reliable, and more durable than welded pipes. In automobiles, stainless steel seamless pipes are mainly used in the exhaust system, accounting for more than ha...

 At the Beginning of April, Xinyue have received a new enquiry, which is a similar transmission project from our regular construction customer. The product is OD 323mm 18meter unit length ERW pipe, total quantity is 150tons. Our previous high QA products and professional services were highly recognized and appreciated by the end user. Therefore they invited us to participate in this new tender. As the customer needs to cooperate with the end user of the initial design and convenient construction, only can accept 18meter unit length pipe with high QA requirement like straightness and end squareness. But the production of this 18meter ERW pipe is very difficult due to such small diameter and less ordered quantity. After several technical consultations with our production team & technical engineers, Xinyue sales team presented a very competitive proposal to the customer. After changing the design and technical requirements repeatedly for more than a month, the customer finally con...

　　ERW is the abbreviation of electric resistance welding. 　　The welding method of ERW pipe and submerged arc welded pipe is significantly different. The pressure welding method without filler metal is adopted. The weld is not filled with other components, and the skin effect and the proximity effect of the high frequency current are used to instantaneously heat the edge of the plate. At the soldering temperature, the weld of the forged structure is extruded by a squeeze roll. High-quality steel pipes require heat treatment on the weld line or off-line to refine the microstructure of the weld zone. The weld of the high-quality ERW welded pipe can reach the same level of toughness as the base metal, which cannot be achieved by the submerged arc welding process. 　　EFW is the abbreviation of electric fusion welding. 　　One of submerged arc welding (SAW)-electric welding (EFW) is a process in which metal is heated by one or several consumable electrodes and a workpiece to heat the met...

    Resistance welding (ERW) is a low-cost, high-efficiency pipeline manufacturing technology, which produces a variety of steel pipe called ERW pipe. ERW welded pipe is made of steel plate or strip after crimping and then welded by high frequency resistance welding. The welded pipe with longitudinal weld has been widely used in oil and natural gas transmission pipeline, oil well casing, coiled tubing and soil (Such as a scaffold).     In recent years, the ERW technology has also been used to produce economical petroleum-grade pipes, partly because of the low cost of ERW technology; on the other hand, the petroleum-made pipes are made of inexpensive carbon steel to reduce pipeline costs. Since the ERW process is a localized heating and pressurizing process, the heat dissipates rapidly along the metal pipe and the crimped steel plate after welding under pressure. The cooling rate can reach the critical cooling rate of the steel. In the ERW pipe, Welding area of its ...