ERW Steel Pipe

How to guarantee the quality of erw carbon steel pipe ERW carbon steel pipe with this processing technology has the advantage of heat treatment after welding process to eliminate the weld and heat-affected zone of the residual stress, grain refinement, weld heat affected zone is small, heating speed, which can greatly improve the welding speed and weld quality, and can be un-pickled, shot peening and trimming the strip as a blank, while welding alloy steel, high alloy steel and non-ferrous metal pipe, greatly reducing the unit power consumption, with a set of welding equipment can produce erw carbon steel pipe. But at the same time, for the erw carbon steel pipe unit, the larger the diameter, the more it is limited by the strip weight and the wall thickness of the raw material, the storage equipment is limited by the spiral looper. In addition, the erw carbon steel pipe unit has a higher linear velocity, arc welding pipe speed is generally 3m / min, do not match each other. Ther...

Steel pipe for water system Water pipes are tubes carry pressurized fresh water to buildings. The erosion resistant property of steel pipes and tubes makes a favorite for water system. Steel pipes are capable of handling high velocity and turbulence without effected the wall thickness. It is well known that steel is one of the leading materials in the modern industry and for many years it has been the favored material for water pipes. Such a large application of steel water pipes and tubes are stipulated by their optimal excellent properties: high values of strength and fracture stability in combination with the reasonably good ductility and flexibility, tensile strength, elongation and reduction in area. Properties of steel water pipes: Stainless steel water pipes sustain longtime exploitation such as friction and corrosion as well as aging. Even after years of use, these pipes don’t practically change characteristics such as hardness and brittleness. Steel water tubes instal...

Knowledge of erw line pipe With the rapid development of economy and the continuous improvement of the energy demand, the pipeline as the oil and gas resources has developed in recent years. A number of medium-caliber ERW line pipe unit was completed and put into operation.ERW line pipe has been widely used in the oil and gas field gathering pipelines, oil and gas Spur. This article will focus on the circumferential residual stress on the impact of ERW line pipe manufacturing process and final product quality and control aspects of the problem. ERW pipe forming process can be divided into two phases: the first stage of deformation; the second stage for reducing distortion. In both phases, the steel pipe inner layer is always affected by the circumferential compressive stress and compressive deformation. The outer layer of fine molding of the bending process by weeks to the tensile stress and extension deformation: in the fine shaping and sizing process. Steel outer layer of comp...

Definition of ERW steel pipe What is an ERW Pipe? A pipe formed by Electric Resistance Welding or   ERW having   one vertical seam without addition of any metal is called ERW pipes or tubes. It can be available in varied diameters and wall thickness. The sizes of pipes ERW pipes can range from 2 3/8 inch to 24 inch outer diameter and length can be over 100feet. How ERW Pipe is made? First the iron is flatten then place it into roller to form a tube and passes through a welding electrode made of copper disk which is connected to a revolving transformer. When the electrodes contact each side, the temperature is increased to the welding point. Once the tubes leaves the electrodes, the inside flash is removed by after colling the tube with a hammer and the outer flash by a cutting tool. The surface finish could be either bare or coated. Qualities of ERW Steel Pipes: Before reaching the market place, ERW steel tubes and pipes are routed through numerous tests inclu...

ERW Casing Casing can both be seamless steel pipe and ERW. We’ll talk about ERW casing’s outer diameter, length, regular standard and steel grade, ends and surface treatment for casing and tubing. For ERW casing: OD: 114.3mm to 508mm. Length: R2 & R3. --R2 is from 7.62 meter to 10.36 meter. --R3 is from 10.36 meter to 14.63 meter. Regular standard and steel grade: API 5CT PSL1/PSL2: H40, J55, K55, L80, N80 etc. Ends: BTC, STC, LTC, VAM TOP, etc. Surface: black or varnished coating. Abstract from  Tianjin Xinyue Steel Group

Quality is what you want and the base of our long term business relationship. About ERW steel pipe's  quality control, below is brief introduction of our quality control. 1. Online inspection. There will be flatting test, hydraulic test, Ultrasonic test on welding seam, pipe body, and pipe end, visual inspection, measuring, weighing, marking. Those are basic inspection we’ll certainly perform during manufacturing process. 2. In strict accordance with ISO 9001: 2000 quality management system and monitored by America Petroleum Institue with API 5L PSL1/PSL2 & API 5CT accreditation, we have developed perfect processing & inspecting instruction and controlled in detailed from raw material purchasing and inspection, uncoiling, pipe forming, online inspection as above, finished pipe testing, anti-corrosion coating, marking, packing, storage, shipment until to after-sale service. Believing “Quality Foster Brand” is the soul of Tianjin Xinyue Steel Group’s development, we st...

ERW Steel Pipe Electric Resistance Welded Steel Pipe Usage:  Used for low pressure liquid delivery, such as water, gas, and oil. Oil drilling and machinery manufacturing, etc. Process: ERW :  Electric Resistance Welded pipe HFI:  High Frequency Induction weld pipe EFW:  Electric Fusion Welded Pipe Standard:  API 5L, API 5CT, ASTM 53, EN10217, DIN 2458. IS 3589, JIS G3452, BS1387 Certificate:  API 5L PSL1/ PSL2, API 5CT Out Diameter:  21.3mm -660mm Wall Thickness:  1.5mm-22.2mm Length:  0.3 – 18m Steel Grade: API 5L : GR B, X42,X46, X56, X60,X65,X70 ASTM A53: GR A, GR B, GR C EN: S275, S275JR, S355JRH, S355J2H GB: Q195, Q215, Q235, Q345, L175, L210, L245, L320, L360- L555 Surface:  Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement Test:  Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yiel...

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