Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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DL 429.5-1991 Volatile water-soluble acid measurement method via email in 1~3 business day
DL 429.6-1991 Moving oil open-beaker aging test method via email in 1~3 business day
DL 429.7-1991 Fatlute precipitation test method via email in 1~3 business day
DL 429.8-1991 Corrosion assays via email in 1~3 business day
DL 429.9-1991 Dielectric oil dielectric strength test method via email in 1~3 business day
DL 433-1992 Test method for chlorinity in fire resistant oil (bomb method) $60.00 via email in 1~3 business day superseded
DL 434-1991 Regulations for implementing the legal units of measure in power water chemistry $60.00 via email in 1~3 business day valid
DL 436-1991 Technical Guide for HVDC Overhead Transmission Lines $210.00 via email in 1~3 business day superseded
DL 437-1991 Technical guide of HVDC earth electrode system $135.00 via email in 1~3 business day abolished
DL 438-1991 Technical Supervision Codes for Metal in Thermal Power Plants $160.00 via email in 1~3 business day valid
DL 438-2000 Technical supervision codes for metal in thermal power plants $300.00 immediately superseded
DL 439-1991 The Technical Guide for High-Temperature Bolt of Fossil-Fired Power Plant $450.00 via email in 1~5 business day abolished
DL 440-1991 The Code of Inspection, Evaluation and Process for Existing Boiler Drum in Fossil-Fuel Power Plants $264.00 via email in 1~3 business day superseded
DL 441-1991 Supervision Code for Creep Strain of Steam Pipe in High Temperature and High Pressure in Fossil Fuel Power Plant $120.00 via email in 1~3 business day superseded
DL 442-1991 Technical conditions for ordering fuses used for protecting individual high-voltage parallel capacitor $210.00 via email in 1~3 business day valid
DL 443-1991 General Requirements for Delivery Inspection of Hydro-generator Units $160.00 immediately valid
DL 444-1991 Reaction turbine gas etching damage evaluation standard via email in 1~3 business day
DL 445-1991 Basic Specification for Hydraulic Turbine $255.00 via email in 1~3 business day superseded
DL 447-1991 via email in 1~3 business day valid
DL 448-1991 Administrative Code of Electric Energy Metering $310.00 via email in 1~5 business day superseded
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