Abstract: A steel pipe collapse strength prediction model generation method, a steel pipe collapse strength prediction method, a steel pipe manufacturing characteristics determination method, and a steel pipe manufacturing method capable of highly accurately predicting the collapse strength under external pressure bending of a coated steel pipe coated after steel pipe forming in consideration of the pipe-making strain during steel pipe forming and coating conditions as well as the bending strain during construction.

Abstract: A steel pipe collapse strength prediction model generation method, a steel pipe collapse strength prediction method, a steel pipe manufacturing characteristics determination method, and a steel pipe manufacturing method capable of highly accurately predicting the collapse strength of a steel pipe after forming or a coated steel pipe in consideration of the pipe-making strain during forming. Into a steel pipe collapse strength prediction model generated by the prediction model generation method, steel pipe manufacturing characteristics including the shape of a steel pipe to be predicted after forming, strength characteristics, and the pipe-making strain are input to predict the collapse strength after forming.

Abstract: Provided is a method for evaluating brittle crack arrestability of a steel plate by using a large test piece, in which a notch is disposed on one edge in a central portion, in which an embrittled region having a predetermined length L is formed at a tip of the notch or formed so as to include the tip, and in which a fusion zone spaced from the embrittled region is disposed. The fusion zone is formed on one side or both sides of the embrittled region at a distance d from the embrittled region, where d is determined in relation to a thickness t of the steel plate, and a length of the fusion zone is determined by adding ?L1 (0.3L to ?0.3L) to a length L of the embrittled region and by subtracting ?L2 (0 to 0.4L) from the length L.

Abstract: Provided is a method for evaluating brittle crack arrestability of a steel plate by using a large test piece, in which a notch is disposed on one edge in a central portion, in which an embrittled region having a predetermined length L is formed at a tip of the notch or formed so as to include the tip, and in which a fusion zone spaced from the embrittled region is disposed. The fusion zone is formed on one side or both sides of the embrittled region at a distance d from the embrittled region, where d is determined in relation to a thickness t of the steel plate, and a length of the fusion zone is determined by adding ?L1 (0.3L to ?0.3L) to a length L of the embrittled region and by subtracting ?L2 (0 to 0.4L) from the length L.

Abstract: A circumferential welded joint of a line pipe is formed by butting against each other end portions of steel pipes having a yield strength according to 5L Specification of API Standards not smaller than 555 N/mm2 and welding the butted portions in a circumferential direction. A joint strength ratio ?match=(TS-w/TS-b)·(YS-w/YS-b) represented by a product of a ratio between a tensile strength TS-w of a weld metal and a tensile strength TS-b of a base material and a ratio between a yield strength YS-w of the weld metal and a yield strength YS-b of the base material, and a critical equivalent plastic strain ?p-cri [%] for ductile crack generation in a base material heat affected zone satisfy Equation (1), and the yield strengths YS-w, YS-b of the weld metal and base material satisfy Equation (2). ?match>4.85?p-cri?0.31??(1) YS-w/YS-b?1.

Abstract: A print job is submitted from a client terminal 100 to two print servers 200-1, 200-2, a print server taking main charge 200-1 instructs a printer 300 to print one page at a time in sequence, and status information indicating the printing state is shared by the two print servers 200-1, 200-2. If a failure occurs in the print server taking main charge 200-1, then, on the basis of the status information shared by the two print servers 200-1, 200-2, a print server taking sub charge 200-2 instructs the printer 300 to print in accordance with the submitted print job from the unprinted page. This makes it possible to immediately continue the print from the page indicated to be completely printed when the failure occurred.

Abstract: A print job is submitted from a client terminal 100 to two print servers 200?1, 200?2, a print server taking main charge 200?1 instructs a printer 300 to print one page at a time in sequence, and status information indicating the printing state is shared by the two print servers 200?1, 200?2. If a failure occurs in the print server taking main charge 200?1, then, on the basis of the status information shared by the two print servers 200?1, 200?2, a print server taking sub charge 200?2 instructs the printer 300 to print in accordance with the submitted print job from the unprinted page. This makes it possible to immediately continue the print from the page indicated to be completely printed when the failure occurred.

Abstract: A print job is submitted from a client terminal 100 to two print servers 200-1, 200-2, a print server taking main charge 200-1 instructs a printer 300 to print one page at a time in sequence, and status information indicating the printing state is shared by the two print servers 200-1, 200-2. If a failure occurs in the print server taking main charge 200-1, then, on the basis of the status information shared by the two print servers 200-1, 200-2, a print server taking sub charge 200-2 instructs the printer 300 to print in accordance with the submitted print job from the unprinted page. This makes it possible to immediately continue the print from the page indicated to be completely printed when the failure occurred.

Abstract: A print job is submitted from a client terminal 100 to two print servers 200?1, 200?2, a print server taking main charge 200?1 instructs a printer 300 to print one page at a time in sequence, and status information indicating the printing state is shared by the two print servers 200?1, 200?2. If a failure occurs in the print server taking main charge 200?1, then, on the basis of the status information shared by the two print servers 200?1, 200?2, a print server taking sub charge 200?2 instructs the printer 300 to print in accordance with the submitted print job from the unprinted page. This makes it possible to immediately continue the print from the page indicated to be completely printed when the failure occurred.

Abstract: A print job is submitted from a client terminal 100 to two print servers 200-1, 200-2, a print server taking main charge 200-1 instructs a printer 300 to print one page at a time in sequence, and status information indicating the printing state is shared by the two print servers 200-1, 200-2. If a failure occurs in the print server taking main charge 200-1, then, on the basis of the status information shared by the two print servers 200-1, 200-2, a print server taking sub charge 200-2 instructs the printer 300 to print in accordance with the submitted print job from the unprinted page. This makes it possible to immediately continue the print from the page indicated to be completely printed when the failure occurred.

Abstract: A print job is submitted from a client terminal 100 to two print servers 200?1, 200?2, a print server taking main charge 200?1 instructs a printer 300 to print one page at a time in sequence, and status information indicating the printing state is shared by the two print servers 200?1, 200?2. If a failure occurs in the print server taking main charge 200?1, then, on the basis of the status information shared by the two print servers 200?1, 200?2, a print server taking sub charge 200?2 instructs the printer 300 to print in accordance with the submitted print job from the unprinted page. This makes it possible to immediately continue the print from the page indicated to be completely printed when the failure occurred.

Abstract: A UOE steel pipe used to form a structure by performing butt circumferential welding and having an outside diameter shape in a waveform in a longitudinal direction is shaped to have no local minimum of the outside diameter shape in the waveform within a predetermined length from both longitudinal end portions.

Abstract: A circumferential welded joint of a line pipe is formed by butting against each other end portions of steel pipes having a yield strength according to 5L Specification of API Standards not smaller than 555 N/mm2 and welding the butted portions in a circumferential direction. A joint strength ratio ?match=(TS-w/TS-b)·(YS-w/YS-b) represented by a product of a ratio between a tensile strength TS-w of a weld metal and a tensile strength TS-b of a base material and a ratio between a yield strength YS-w of the weld metal and a yield strength YS-b of the base material, and a critical equivalent plastic strain ?p-cri [%] for ductile crack generation in a base material heat affected zone satisfy Equation (1), and the yield strengths YS-w, YS-b of the weld metal and base material satisfy Equation (2). ?match>4.85?p-cri?0.31??(1) YS-w/YS-b?1.

Abstract: A UOE steel pipe used to form a structure by performing butt circumferential welding and having an outside diameter shape in a waveform in a longitudinal direction is shaped to have no local minimum of the outside diameter shape in the waveform within a predetermined length from both longitudinal end portions.