Patents
Sitemap › B21 - Mechanical metal-working without essentially removing material; Punching metal › B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing material; Punching › B21D 3 - Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
Patents for B21D 3 - Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts (4,094)
11/2012
11/21/2012CN102019308B Calibration device for semi-automatic T-shaped guide rail distortion straightener
11/15/2012WO2012153129A1 A pipe straightening apparatus and a method of straightening a pipe
11/14/2012CN202535235U Motor shell inner hole shaping device
11/14/2012CN202527536U Circularity calibration machine for opening of steel heating bent pipe
11/14/2012CN102773314A Shape-correcting method for cone-shaped cylinder after deformation of heat treatment for steam generator of nuclear power equipment
11/14/2012CN102114503B Rotating mechanism for tubes and bars on horizontal straightening machine
11/07/2012CN202516963U Manipulator for gripping pipe fitting
11/07/2012CN202516888U Guiding cam recovery device
11/07/2012CN202516887U Slender shaft straightening measurement machine
11/07/2012CN202516882U Direct-drive type straightening machine
11/07/2012CN102764800A Online high-temperature straightening machine for large round steel
11/07/2012CN102764799A Steel correction device
11/07/2012CN102248368B KB section rolling forming method
11/07/2012CN101927278B Method for realizing precision straightening of thin-wall seamless steel tubes by adopting six-roller straightener
11/06/2012US8302442 Method of incrementally forming a workpiece
10/2012
10/31/2012CN202506765U Workpiece clamping device of tension force straightener
10/31/2012CN102756019A Device for roundness adjustment and supporting of penstock
10/31/2012CN102756018A Single-fin heat exchange tube sidewise bending calibrating device
10/31/2012CN102756017A Three-point bending straightening intelligent control strategy for large-sized pipe fitting
10/31/2012CN102756016A Flat steel finishing device
10/31/2012CN102756012A Precision casting pneumatic shaping device
10/30/2012US8297097 Closing method and closing machine
10/24/2012CN202498106U Straightening device
10/24/2012CN202498105U Rotation straightening device
10/24/2012CN102744560A Finishing method for straightening small and medium-sized angle steel double-line long ruler
10/24/2012CN102744297A Electrical heating tension straightening machine for small-dimension profiled bars
10/24/2012CN102744295A Pressing device with elevation control function
10/24/2012CN102744290A Shaping and leveling clamp
10/17/2012CN202490854U Horizontal-drawing straightening machine
10/17/2012CN202490853U Three-point straightening device for producing aluminum heat radiating pipe
10/17/2012CN202490852U Surfacing compound straightener roll
10/17/2012CN102729028A Multifunctional full-automatic aluminum lantern ring machine
10/17/2012CN102729013A C-type steel hot extrusion production process
10/17/2012CN102728724A Correction mould of ovality of pipe end of welding steel pipe
10/17/2012CN102728716A Tube blank shaping die
10/17/2012CN102728665A Device for partially flattening surfaces of magnesium-aluminum alloy profiles
10/17/2012CN102728664A Hydraulic stretching machine
10/17/2012CN102728663A Automatic distorting machine
10/17/2012CN102728662A Apparatus for correcting orifices of steel pipes
10/17/2012CN101927280B Method for straightening flatness at end part of steel rail
10/11/2012WO2012137924A1 Pipe material correction apparatus and pipe material correction method
10/10/2012CN202479350U Leveling mould for diffuser of automobile exhaust recirculation cooling system
10/10/2012CN202479339U Two-roller straightener roller-changing device
10/10/2012CN202479338U Secondary molding unit for converting circular tube into square tube
10/10/2012CN202479278U Lifting rolling platform for straightener
10/10/2012CN202479277U Device for straightening linear guide rail
10/10/2012CN202479276U Steel billet quenching straightening machine
10/10/2012CN202479275U Automatic oil bearing shaping device
10/10/2012CN202479274U Automatic shaper
10/10/2012CN102716991A Hoisting device for straightening mould of welded steel pipe
10/10/2012CN102716943A Roundness correction and maintaining device of cylindrical pile legs of self-elevating type wind power installation ship
10/10/2012CN102096393B Method for dynamically limiting amplitude during non-automatic control of straightening machine and system thereof
10/10/2012CN101956888B Solid ramjet shell bonding, pressing and assembling method and rounding device
10/04/2012US20120247606 Low-Molybdenum, High-Strength Low-Alloy 80 ksi Steel Plates Formed by Temperature-Controlled Rolling Without Accelerated Cooling
10/03/2012CN202461337U Workpiece centering device of tension straightening machine
10/03/2012CN202461333U Hole shrinkage roll-rounding device for port of stainless steel pipe
10/03/2012CN202461286U Die for steel pipe finishing machine
10/03/2012CN202461211U Device for trimming diameter of pipe fitting
10/03/2012CN202461210U Twisting mechanism of tension straightening machine
10/03/2012CN202461209U Straightener suitable for steel pipes with different lengths
10/03/2012CN202461208U One-piece roll-forging steel fork shaper
10/03/2012CN202461207U Welding member cold shaping device
10/03/2012CN202461206U Automatic extrusion straightener system
10/03/2012CN202461205U Full-automatic pipe aligning device
10/03/2012CN202461204U Clamp body of tension straightener
10/03/2012CN202461203U Liner core device for tension straightening machine
10/03/2012CN202461202U Tension straightening machine
10/03/2012CN202461201U Fixing head locking device of tension straightening machine
10/03/2012CN202461200U Bearing main framework of tension leveler
10/03/2012CN102699205A Fixed outer diameter combined die for welded steel tubes
10/03/2012CN102699154A Crankshaft straightening method
10/03/2012CN102699153A Tub end rounding device and process for seamless steel tube
10/03/2012CN102699152A Metal pipe blank shaping machine
10/03/2012CN102699151A Hard block shaping clamp for copper weaving wire after spot welding
10/03/2012CN102699150A Bending straightener for drill pipe
10/03/2012CN102699149A Method for straightening shaft piece deformed after heat treatment
10/03/2012CN102699148A Lateral shaping mechanism for removing lateral springback of stamping part
09/2012
09/27/2012US20120240654 Current collector shape adjusting device
09/26/2012CN202447435U Straightening mechanism
09/26/2012CN202447434U Bent tower material corrector
09/26/2012CN202447433U Pipe straightening machine
09/26/2012CN202447432U Device for straightening eccentricity through pressure wheel by H-shaped steel straightening machine
09/26/2012CN202447431U H-shaped steel straightening machine
09/26/2012CN202447430U Rear wall longitudinal beam reshaping profiler
09/26/2012CN202447429U Dressing mechanism for chain pipe coiling machine
09/26/2012CN102688949A On-line straightener for steel tube expanding
09/26/2012CN102688914A Pressure roller device on mechanical straightening machine
09/26/2012CN102688913A Automatic fine straightening device of elevator guide rails
09/26/2012CN102114504B Semi-automatic torsion straightening machine for T-shaped guide rail
09/19/2012CN202438576U Steel pipe straightening machine
09/19/2012CN202438575U Short-stress-line multi-roll straightening machine
09/19/2012CN102674189A Automatic counting alignment winch for offshore oil well high pressure oil pipe
09/19/2012CN102672066A Feeding device and feeding method for straightener
09/19/2012CN102672009A Bar overturning mechanism and conveying trolley for bar straightening machine
09/19/2012CN102672008A Section steel straightening machine
09/19/2012CN102672007A Internal heating and pressurizing pipe distortion rectification device and method
09/12/2012CN202427773U Half round steel contour machining device
09/12/2012CN202427766U Rapid broach straightening device
09/12/2012CN202427765U Full-automatic triaxial synchronous straightener for section bars
09/12/2012CN202427764U H-shaped steel flange plate straightening machine
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