MT 112-1993 Mining single-stage hydraulic post

MT 112-1985

MT/T 112.1-2006 Mining single-unit hydraulic pillar Part 1: General requirements

GB 1239.4 GB 1239.5 GB/T 197-2003 General purpose metric screw threads—Tolerances GB/T 197-2018 General purpose metric screw threads—Tolerances GB/T 321-1980 Preferred numbers and preferred number series GB/T 321-2005 Preferred numbers—Series of preferred numbers GB/T 1184-1996 Geometrical tolerancing—Geometrical tolerance for features without individual tolerance indications GB/T 1239.1-2009 Cold coiled helical springs technical specifications—Part 1:Extension spring GB/T 1239.2-2009 Cold coiled helical springs technical specifications—Part 2:Compressions spring GB/T 1239.3-2009 Cold coiled helical springs technical specifications—Part 3:Torsion spring GB/T 1804-2000 General tolerances for linear and angular dimensions without individual tolerance indications GB/T 2348-1993 Fluid power systems and components—Cylinder bores and piston rod diameters GB/T 2348-2018 Fluid power systems and components—Cylinder bores and piston rod diameters GB/T 2649-1989 Methods of sampling for mechanical properties tests of welded joint GB 3452.1-1992 Fluid systems—Sealing devices—O-rings—Inside diameters, cross-sections, tolerances and size identification code GB/T 3452.1-2005 Fluid power systems—O-rings—Part 1:Inside diameters, cross-sections, tolerances and size identification code GB/T 3683-1992 Rubber hoses and hose assemblies—Wire reinforced hydraulic type GB/T 3683.1-2006 Rubber hoses and hose assemblies—Wire-braid-reinforced hydraulic types—Specification—Part 1:Oil-based fluid applications GB/T 3683-2011 Rubber hoses and hose assemblies—Wire-braid-reinforced hydraulic types for oil-based or water-based fluids—Specification GB/T 3683-2023 Rubber hoses and hose assemblies—Wire-braid-reinforced hydraulic types for oil-based or water-based fluids—Specification GB/T 12361-2003 General specification of Steel die forgings GB/T 12361-2016 Steel die forgings—General specification GB/T 12362-2003 Tolerances and machining—Allowances of steel die forging GB/T 12362-2016 Steel die forgings—Tolerance and machining allowance MT/T 154.1-1992 The guidelines for the preparation of coal mine electromechanical product models and management measures MT/T 335-1995 Monolastic hydraulic post surface anti-corrosion treatment technical specification MT/T 98-2006 Testing specification for hydraulic support hoses and hose assemblies MT/T 154.1-2011 Coal mine electromechanical product model designation method Part 1: Guidelines MT 76-2002 Emulsifying oil, concentrates, and high water content hydraulic fluids for hydraulic supports (poles) MT/T 76-2011 Emulsifying oil,concentrate fluid and high-water content hydraulic fluid used for powered support