Abstract: Provided is a construction machine allowing a deck to be compact while facilitating water supply to a urea tank and access to a grease supply device. The construction machine includes a hose reel for grease supply disposed on a front-side portion of a deck of an upper slewing body, and a urea tank 30 disposed rearward of the hose reel on the deck and stores urea water for exhaust gas purification. The urea tank has a front surface provided with a water inlet for resupplying urea water. The hose reel is disposed deviated from the water inlet widthwise of the upper slewing body. The water inlet has a distal end located on the front side of a rear end of the hose reel.

Abstract: The present invention provides electric-resistance welded steel pipe optimal for applications such as production of shale gas which is comprised of steel having a chemical composition which contains, by mass %, respectively, C: 0.08 to 0.18%, Si: 0.01% to 0.50%, Mn: 1.30 to 2.1%, Al: 0.001 to 0.10%, Nb: 0.005 to 0.08%, and Ti: 0.005 to 0.03%, is limited to N 0.008% or less, P: 0.020% or less, and S: 0.010% or less, and has a balance of Fe and unavoidable impurities, wherein a structure at a center part of thickness is 40% to 70% by area of ferrite phase having a circle-equivalent diameter of 1.0 ?m to 10.0 ?m and a balance of a low temperature transformation phase comprising a bainite phase, and Ceq satisfies 0.32?Ceq?0.60.

Abstract: Provided is a construction machine allowing a deck to be compact while facilitating water supply to a urea tank and access to a grease supply device. The construction machine includes a hose reel for grease supply disposed on a front-side portion of a deck of an upper slewing body, and a urea tank 30 disposed rearward of the hose reel on the deck and stores urea water for exhaust gas purification. The urea tank has a front surface provided with a water inlet for resupplying urea water. The hose reel is disposed deviated from the water inlet widthwise of the upper slewing body. The water inlet has a distal end located on the front side of a rear end of the hose reel.

Abstract: An oil well pipe for expandable tubular, containing, in terms of % by mass: 0.020 to 0.080% of C, 0.50% or less of Si, 0.30 to 1.60% of Mn, 0.030% or less of P, 0.010% or less of S, 0.005 to 0.050% of Ti, and 0.010 to 0.500% of Al, and the balance being Fe and impurities, wherein, in a metallographic microstructure, an area fraction of a first phase composed of ferrite is from 90.0% to 98.0% and an area fraction of a second phase composed of one or more selected from the group consisting of tempered martensite, tempered bainite, and pearlite is from 2.0% to 10.0%.

Abstract: An electric resistance welded steel pipe for an oil well includes in terms of mass %: 0.02 to 0.14% of C, 0.05 to 0.50% of Si, 1.0 to 2.1% of Mn, 0.020% or less of P, 0.010% or less of S, 0.010 to 0.100% of Nb, 0.010 to 0.050% of Ti, 0.010 to 0.100% of Al, and 0.0100% or less of N. Contents of Cu, Ni, Cr, Mo, V, and B are 0 to 0.50%, 0 to 1.00%, 0 to 0.50%, 0 to 0.30%, 0 to 0.10%, and 0 to 0.0030%, respectively. Remainder consisting of Fe and unavoidable impurities. In a case that a full thickness specimen is subjected to a pipe axis direction tensile test, a tensile strength is 780 MPa or more, 0.2% proof stress/tensile strength is 0.80 or more, and 2% flow stress/tensile strength is from 0.85 to 0.98.

Abstract: An electric resistance welded steel pipe which has sufficient strength and low-temperature toughness and a low yield ratio and which is suitable as a line pipe to be laid in depths of the sea, characterized in that: the composition of the base material contains, in mass %, 0.05 to 0.10% of C, 1.00 to 1.60% of Mn, and 0.005 to less than 0.035% of Nb, and has a Ceq value of 0.23 to 0.38; and the metal microstructure of the base material contains 3 to 13% of martensite in area fraction with the balance being ferrite.

Abstract: Provided is a construction machine which is capable of stably support an exhaust aftertreatment device comprising a first treatment section and a second treatment section arranged in one-above-the-other and side-by-side relation. A hydraulic excavator comprises: an exhaust aftertreatment device comprising a first treatment section and a second treatment section which are arranged in one-above-the-other and in side-by-side relation; a lower plate attached to a lower surface of the exhaust aftertreatment device, and provided above a slewing frame to support the exhaust aftertreatment device from therebeneath in such a manner that the exhaust aftertreatment device is disposed at a position overlapping the engine in side view; and a left vertical plate disposed to extend upwardly from a portion of the lower plate located between the exhaust aftertreatment device and the engine, and attached to a lateral surface of the exhaust aftertreatment device.

Abstract: The rear wall portion has a curved portion curved in an approximately arc shape in top plan view to serve as a right or left end thereof. An engine is provided on the upper frame at a position in front of the rear wall portion in such a manner that an interspace is formed between the engine and the curved portion. An exhaust aftertreatment device is provided in front of the rear wall portion while being superposed over the interspace. The exhaust aftertreatment device comprises a first treatment section and a second treatment section. The first treatment section and the second treatment section are supported over the upper frame in a posture where respective longitudinal directions of the first and second treatment sections are oriented parallel to each other in top plan view and along the curved portion in top plan view.

Abstract: An electric resistance welded steel pipe for an oil well includes in terms of mass %: 0.02 to 0.14% of C, 0.05 to 0.50% of Si, 1.0 to 2.1% of Mn, 0.020% or less of P, 0.010% or less of S, 0.010 to 0.100% of Nb, 0.010 to 0.050% of Ti, 0.010 to 0.100% of Al, and 0.0100% or less of N. Contents of Cu, Ni, Cr, Mo, V, and B are 0 to 0.50%, 0 to 1.00%, 0 to 0.50%, 0 to 0.30%, 0 to 0.10%, and 0 to 0.0030%, respectively. Remainder consisting of Fe and unavoidable impurities. In a case that a full thickness specimen is subjected to a pipe axis direction tensile test, a tensile strength is 780 MPa or more, 0.2% proof stress/tensile strength is 0.80 or more, and 2% flow stress/tensile strength is from 0.85 to 0.98.

Abstract: The present invention provides electric-resistance welded steel pipe optimal for applications such as production of shale gas which is comprised of steel having a chemical composition which contains, by mass %, respectively, C: 0.08 to 0.18%, Si: 0.01% to 0.50%, Mn: 1.30 to 2.1%, Al: 0.001 to 0.10%, Nb: 0.005 to 0.08%, and Ti: 0.005 to 0.03%, is limited to N 0.008% or less, P: 0.020% or less, and S: 0.010% or less, and has a balance of Fe and unavoidable impurities, wherein a structure at a center part of thickness is 40% to 70% by area of ferrite phase having a circle-equivalent diameter of 1.0 ?m to 10.0 ?m and a balance of a low temperature transformation phase comprising a bainite phase, and Ceq satisfies 0.32?Ceq?0.60.

Abstract: The rear wall portion has a curved portion curved in an approximately arc shape in top plan view to serve as a right or left end thereof. An engine is provided on the upper frame at a position in front of the rear wall portion in such a manner that an interspace is formed between the engine and the curved portion. An exhaust aftertreatment device is provided in front of the rear wall portion while being superposed over the interspace. The exhaust aftertreatment device comprises a first treatment section and a second treatment section. The first treatment section and the second treatment section are supported over the upper frame in a posture where respective longitudinal directions of the first and second treatment sections are oriented parallel to each other in top plan view and along the curved portion in top plan view.

Abstract: Provided is a construction machine which is capable of stably support an exhaust aftertreatment device comprising a first treatment section and a second treatment section arranged in one-above-the-other and side-by-side relation. A hydraulic excavator comprises: an exhaust aftertreatment device comprising a first treatment section and a second treatment section which are arranged in one-above-the-other and in side-by-side relation; a lower plate attached to a lower surface of the exhaust aftertreatment device, and provided above a slewing frame to support the exhaust aftertreatment device from therebeneath in such a manner that the exhaust aftertreatment device is disposed at a position overlapping the engine in side view; and a left vertical plate disposed to extend upwardly from a portion of the lower plate located between the exhaust aftertreatment device and the engine, and attached to a lateral surface of the exhaust aftertreatment device.

Abstract: Provided is a cab for construction machine, having an excellent operator protection effect against a lateral load. Provided is a cab disposed on an upper frame of a construction machine, including a pair of rear pillars and a rear panel disposed therebetween. The rear panel includes an outer panel and an inner panel including a plurality of panel portions vertically arranged and a bridge portion partly bridging the panel portions vertically adjacent to each other at a position offset from a lateral center position of the rear panel. The bridge portion forms a low-strength portion having lower strength than that of the panel portions so as to make the low-strength portion include a bending point at which the rear panel is bent when a lateral load acts thereon through an outer rear pillar.

Abstract: Provided is a construction machine having a sufficient space for tool accommodation and allowing reducing agent to be supplied into a reducing-agent tank easily. The construction machine includes an engine, a reducing-agent tank having a tank body and a supply portion, and a tool box. The tool box includes a box body defining an accommodation space having an opening which opens the accommodation space outwards and allows a tool to be put into and taken from the accommodation space through the opening, and an opening/closing cover which opens and closes the opening. The tank body is outside the box body. The supply portion includes a basal end connected to the tank body and a distal end located in the accommodation space at a position making the distal end visible from the outside of the box body through the opening which is opened.

Abstract: Provided is a cab for construction machine, having an excellent operator protection effect against a lateral load. Provided is a cab disposed on an upper frame of a construction machine, including a pair of rear pillars and a rear panel disposed therebetween. The rear panel includes an outer panel and an inner panel including a plurality of panel portions vertically arranged and a bridge portion partly bridging the panel portions vertically adjacent to each other at a position offset from a lateral center position of the rear panel. The bridge portion forms a low-strength portion having lower strength than that of the panel portions so as to make the low-strength portion include a bending point at which the rear panel is bent when a lateral load acts thereon through an outer rear pillar.

Abstract: A boom foot pin is attached to a pair of vertical plates so as to be able to be pulled out along an axial direction of the boom foot pin. A housing box has a box main body with a housing space inside and an opening/closing lid configured to allow an opening region of the box main body to be opened and closed. The box main body is disposed on the right of the right vertical plate in a state where the boom foot pin is placed opposite the housing space with reference to the opening region in a side view in which the upper slewing body is viewed along an axial direction and the box main body is shaped to open the boom foot pin in the axial direction. The opening/closing lid is rotated to a position where the opening region is closed to lie at a position where the opening/closing lid overlaps the boom foot pin in the side view, and is rotated to a position where the opening region is opened to lie at a position where the boom foot pin is opened in the axial direction.

Abstract: An electric resistance welded steel pipe which has sufficient strength and low-temperature toughness and a low yield ratio and which is suitable as a line pipe to be laid in depths of the sea, characterized in that: the composition of the base material contains, in mass %, 0.05 to 0.10% of C, 1.00 to 1.60% of Mn, and 0.005 to less than 0.035% of Nb, and has a Ceq value of 0.23 to 0.38; and the metal microstructure of the base material contains 3 to 13% of martensite in area fraction with the balance being ferrite.

Abstract: A boom foot pin is attached to a pair of vertical plates so as to be able to be pulled out along an axial direction of the boom foot pin. A housing box has a box main body with a housing space inside and an opening/closing lid configured to allow an opening region of the box main body to be opened and closed. The box main body is disposed on the right of the right vertical plate in a state where the boom foot pin is placed opposite the housing space with reference to the opening region in a side view in which the upper slewing body is viewed along an axial direction and the box main body is shaped to open the boom foot pin in the axial direction. The opening/closing lid is rotated to a position where the opening region is closed to lie at a position where the opening/closing lid overlaps the boom foot pin in the side view, and is rotated to a position where the opening region is opened to lie at a position where the boom foot pin is opened in the axial direction.

Abstract: Provided is a construction machine having a sufficient space for tool accommodation and allowing reducing agent to be supplied into a reducing-agent tank easily. The construction machine includes an engine, a reducing-agent tank having a tank body and a supply portion, and a tool box. The tool box includes a box body defining an accommodation space having an opening which opens the accommodation space outwards and allows a tool to be put into and taken from the accommodation space through the opening, and an opening/closing cover which opens and closes the opening. The tank body is outside the box body. The supply portion includes a basal end connected to the tank body and a distal end located in the accommodation space at a position making the distal end visible from the outside of the box body through the opening which is opened.

Abstract: In a construction machine such as a hydraulic excavator in which a boom of a working attachment is arranged to one of the left and right sides of a cab into which an operator gets on, a load transmission member for transmitting a lateral load imposed on the cab at the time of rollover of a machine main body to the boom serving as a load receiving member is attached to a side surface of the boom in a state that the load transmission member is elastically deformable taking a boom attachment point as a supporting point, further, a projection piece is provided for this load transmission member, and a clearance is formed between this projection piece and a left end surface of a top plate of the boom.