GB/T 3639-2009 Translated English of Chinese Standard. (GBT 3639-2009, GB/T3639-2009, GBT3639-2009): Seamless cold-drawn or cold-rolled steel tubes for precision applications
https://www.chinesestandard.net, 02.08.2015 - 20 Seiten
This Standard specifies classification, code, dimension, shape, weight, permissible deviations, technical requirements, test methods, inspection rules, packaging, marking, and quality certificate of cold-drawn or cold-rolled precision seamless steel tubes.
analysis of iron annealing Annex article numbers chapter and article chemical composition Chinese standard classification and code classification codes cold-drawn or cold-rolled cold-rolled precision seamless Comparison of chapter content GB/T contract controlled atmosphere Curvature of steel-tube DELETE delivered according Delivery conditions Dimension drift expanding test eddy current final cold-finished process indicated inner and outer Inspection item Iron steel leak tightness inspection magnetic flux leakage Manufacturing method mechanical properties method of steel-tubes Methods for chemical multiple length mutual negotiation order content original standards outer diameters outer surfaces permissible deviations precision seamless steel quality certificate requirements of China seamless steel tubes situation of China specifications in GB/T specifications in Table spectrophotometric method GB/T standard preparation requirements steel and alloy Steel grade steel-tube at heat steel-tubes delivered steel-tubes shall comply suit the standard Surface roughness surfaces of steel-tubes Table B.1 TAKE one specimen Technical differences tensile strength test methods