GB/T 1804 General tolerances Tolerances for linear and angular dimensions without individual tolerance indications
GB/T 8923 Rust grades and preparation grades of steel surfaces before application of paints and related products
SY/T 0448-2008 history
2018SY/T 0448-2018 Technical Specifications for Installation and Construction of Steel Containers for Ground Construction in Oil and Gas Fields
2008SY/T 0448-2008 Construction and technological specification of steel vessel for oil and gas treatment in oil and gas field
1997SY/T 0448-1997 Specification of construction and acceptance for steel pressure vessel used in oil field oil and gas treatment
SY/T 0448-2008 Construction and technological specification of steel vessel for oil and gas treatment in oil and gas field has been changed from SY/T 0449-1997 Specification of construction and acceptance for steel normal pressure vessel used in oil and gas field.