MT/T 417-1995 The quality of hydraulic support products is classified into different levels

GB/T 1732-1993 Determination of impact resistance of film GB/T 1732-2020 Determination of impact resistance of coating films GB/T 3323-1987 Methods for radiographic inspection and classification of radiographs for fusion welded butt joints in steel GB/T 3323-2005 Radiographic examination of fusion welded joints in metallic materials GB/T 3323.1-2019 Non-destructive testing of welds—Radiographic testing—Part 1:X-and gamma-ray techniques with film GB/T 3323.2-2019 Non-destructive testing of welds—Radiographic testing—Part 2:X-and gamma-ray techniques with digital detectors GB/T 9799-1997 Metallic coatings—Electroplated coatings of zinc on iron or steel GB/T 9799-2011 Metallic and other inorganic coatings—Electroplated coatings of zinc with supplementary treatments on iron or steel GB/T 9799-2024 Metallic and other inorganic coatings—Electroplated coatings of zinc with supplementary treatments on iron or steel GB/T 11352-1989 Carbon steel castings for general engineering purposes GB/T 11352-2009 Carbon steel castings for general engineering purpose GB/T 12361-2003 General specification of Steel die forgings GB/T 12361-2016 Steel die forgings—General specification GB/T 13264-1991 Sampling procedures and tables for inspection of small lots or batches by attributes for percent nonconforming GB/T 13264-2008 Sampling procedures and tables for small lot inspection by attributes for percent nonconforming items MT 97-1992 Hydraulic support jack technical specification MT 312-1992 Hydraulic support general technical specification MT 313-1992 Hydraulic support column technical specification JB/T 4385.2-1999 Hammer-free forgings complexity classification and conversion coefficient MT 312-2000 JB/T 4385.1-1999 Hammer-freestone forgings general technical specification