CNIS GB/T 8377-87 Technical requirements for fittings of solid web steel frame CNIS GB/T 8378-87 Test methods for fittings of solid web steel frame CNIS GB/T 8362-87 Retained austenite in steel--Quantitative determination--Method of X-ray diffra... CNIS GB/T 8361-87 The ultrasonic inspection method for the surface of bearing steel(cold drawn ro... CNIS GB/T 224-87 Determination of depth of decarburization of steel CNIS GB/T 8359-87 Carbides in high speed steel--Quantitative phase analysis--Method of X-ray diff... CNIS GB/T 8358-87 Method of breaking tensile test for steel wire rope CNIS GB/T 8163-87 Seamless steel pipes for liquid service CNIS GB/T 8165-87 Stainless steel clad plate CNIS GB/T 8162-87 Seamless Steel pipes for structural purposes CNIS GB/T 3323-87 Methods for radiographic inspection and classification of radiographs for fusio... CNIS GB/T 7920.17-87 Steel reinforcement(bar) processing machinery--Terminology CNIS GB/T 223.57-87 Methods for chemical analysis of iron,steel and alloy--The extraction-absorptio... CNIS GB/T 223.51-87 Methods for chemical analysis of iron,steel and alloy--The 2-(5-Bromo-2-pyridyl... CNIS GB/T 223.52-87 Methods for chemical analysis of iron,steel and alloy--The hydroxylamine hydroc... CNIS GB/T 7736-87 Ultrasonic inspecting method for macro-structure and imperfection of steel CNIS GB/T 223.56-87 Methods for chemical analysis of iron,steel and alloy--The sulfhydryl cotton fi... CNIS GB/T 223.53-87 Methods for chemical analysis of iron,steel and alloy--The flame atomic absorpt... CNIS GB/T 7734-87 Method for ultrasonic testing of clad steel plates CNIS GB/T 223.59-87 Methods for chemical analysis of iron,steel and alloy--The reduced molybdoantim... CNIS GB/T 223.58-87 Methods for chemical analysis of iron,steel and alloy--The sodium arsenite-sodi... CNIS GB/T 223.55-87 Methods for chemical analysis of iron,steel and alloy--The direct oscillopolaro... CNIS GB/T 223.54-87 Methods for chemical analysis of iron,steel and alloy--The flame atomic absorpt... CNIS GB/T 7659-87 Carbon steel castings suitable for welded structure