Key Technology of Seamless Steel Pipe

17th International Conference on Metal Forming, Metal Forming 2018, 16-19 September 2018, Toyohashi, Japan Numerical simulation of cold drawing of steel tubes with straight internal rifling Peter Bellaa,*, Roman Durcika, Martin Ridzona, Ludovit Parilak Numerical simulation of cold drawing of steel tubes with straight  

PERFORMANCE OF Nb/Cu CLAD SEAMLESS SC CAVITY MADE FROM A PIPE BY HOT&COLD ROLLING AND DEEP-DRAWING   I. Itoh, Nippon Steel Co., 20-1 Shintomi Futtsu-shi, Chiba-ken, Japan K.Saito, H.Inoue, KEK Accelerator Lab., 1-1 Oho Tsukuba-shi, Ibaraki-ken, Japan W.Singer, DESY, 22603 Hamburg, Germany   Abstract Nippon Steel Co. has successfully developed […]

The influence of the processing parameters on the performance of the two-roll piercing operation Article in Journal of Mechanical Working Technology · September 1987 Abstract Over the past decade, the demand for higher quality oil-country tubular goods has been increasing and to meet this demand, seamless-pipe mills have been active […]

The e®ectiveness of weld joints primarily depends on the fusion of base metal, minimum heat- a®ected zone (HAZ) and lesser residual stresses. The severity of thermomechanical e®ects e.g. weld shrinkages and residual stresses is signi¯cantly minimized by narrow gap welding tech- nique over the traditional welding. This work describes the […]

This paper deals with the deformation of precision seamless tubes during the cold drawing process, using Finite Element Methods. The value of strain obtain by stereology measurement of degree grain boundaries deformation are compared with simulation result for each drawing pass. The material chosen was the E235 and E355 steel […]

Seamless pipes are demanding and high-technology products. Especially in the oil and gas industry, but also in power plants, they are subject to the most stringent quality requirements. Ultrasonic NDT benches are ideal to detect potential inhomogeneities at industrial speed in rough environments. Using Phased-Array technology with additional Paint-Brush technique […]

 A312 stainless pipe and 304L seamless pipe are two different types of pipes used in different applications. The key differences between them are in their composition, mechanical properties, uses, and cost. The key difference between A312 stainless pipe and 304L seamless pipe is in the composition of each material. A312 […]

35CrMo seamless steel pipe specification: 6-1240×1-200mm   ①Main production process of hot-rolled seamless steel pipe ( △ Main inspection process): Tube blank preparation and inspection △→ tube blank heating → piercing → tube rolling → steel tube reheating → diameter setting (reduction) → heat treatment △→ finished tube straightening → finishing → inspection △ (non-destructive, physical and chemical, Taiwan inspection) → warehousing ②Main production process of cold-rolled (drawn) seamless steel pipe: Billet preparation → pickling and lubrication → cold rolling (drawing) → heat treatment → straightening → finishing → inspection […]