NB/T 10522.1-2021 Automatic waterproof door for mining—Part 1:Mechanical devices

NB/T 10522.2-2021 Automatic waterproof door for mining—Part 2:Electro-hydraulic control system NB/T 10522.3-2021 Automatic waterproof door for mining—Part 3:Code for engineering design,construction and acceptance NB/T 10522.4-2021 Automatic waterproof door for mining—Part 4:Technical regulation for operation and maintenance

GB/T 713-2014 Steel plates for boilers and pressure vessels GB/T 985.1-2008 Recommended joint preparation for gas welding,manual metal arc welding,gas-shield arc welding and beam welding GB/T 8923.1-2011 Preparation of steel substrates before application of paints and related products—Visual assessment of surface cleanliness—Part 1:Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings GB/T 3098.1-2000 Mechanical properties of fasteners—Bolts, screws and studs GB/T 3098.1-2010 Mechanical properties of fasteners—Bolts,screws and studs GB 6514-1995 Safety code for painting—Safety、 ventilation and air clean-up for painting process GB 6514-2008 Safety code for painting—Safety、ventilation and air clean-up for painting process GB 6514-2023 Safety code of practice for coating—Safety and ventilation for coating process GB/T 11345-1989 Method for manual ultrasonic testing and classification of testing results for ferritic steel welds GB/T 11345-2013 Non-destructive testing of welds—Ultrasonic testing—Techniques,testing levels,and assessment GB/T 11345-2023 Non-destructive testing of welds—Ultrasonic testing—Techniques, testing levels and assessment GB/T 11375-1999 Metallic and other inorganic coatings—Thermal spraying—Safe practices GB 12608-1990 Designation for the materials for thermal spraying coatings GB/T 12608-2003 Thermal spraying—Wires,rods and cords for flame and arc spraying—Classification and technical supply condition MT/T 5017-2011 Coal mine shaft equipment anti-corrosion technical specification