The application of non-quenched tempered (NQ T) steel in the high-grade hot-rolling seamless steel oil-well tubes is [Read more]
The application of non-quenched tempered (NQ T) steel in the high-grade hot-rolling seamless steel oil-well tubes is [Read more]
1.The meaning of all kinds of symbols and numbers (1)The meaning of various symbols, the meaning of various s [Read more]
After the Second World War, a wall in Berlin, Germany will be divided into East and west two national standards [Read more]
UNS brand series, basically is a slight change in the United States based organization standard series of origina [Read more]
ASTM Introduction of standard steel grades1.Method for the representation of structural steel gradesMost brands sai [Read more]
The United States has a number of academic society, the association engaged in the standardization of steel work, [Read more]
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