NORSOK挪威石油标准化组织Y47r4Date shett

1、norsok挪威石油标准化组织y47r4date shett norsok standardmaterial data sheetmds - y47 rev. 42type of material: structural steelproductstandardgradeseamless tubulars(seamless hollow sections)en 10225s460q3s460g6+qscopethis mds specifies the selected options in the referred standard and modified requirements whi

2、ch shall supersede the corresponding requirements in the referred standard.qualificationsbase material information, shall be submitted with the bid/ be established prior to delivery.the documentation of base material shall include typical tensile test results and weldability tests according to annex

3、 e (option 18) for sections with thickness approximately 20 mm or the greatest thickness required in the purchase order. ctod testing shall be included for weldability testing for thickness above 40 mm and shall meet a requirement of min. 0,25 mm in as welded condition unless lower values have been

4、accepted by the purchaser. weldability tests in accordance with annex f shall be carried out for the largest tubular thickness of the delivery, within ?5 mm (ref. option 18).heat treatment/delivery conditionchemical compositionoption 6tensile testingmechanical properties shall be modified as follows

5、: yield strength (min.):460 mpa (all thicknesses)tensile strength:550-700 mpa (all thicknesses) impact testingextent of testingsurface conditionnon destructive testing (ndt)surface protectionall surfaces shall receive a preliminary protective primer coat. blast cleaning shall comply with iso 8501-1 sa 2? and the surface shall remain at sa 2? until application of the primer. the primer shall consist of 1 coat zinc ethyl silicate primer with 15 microns. measured on a plane polished stee