Storage shelves selection criteria:
Shelf bearing of steel structure, should be based on its importance, load characteristics, connecting method and using environment specific situation to choose the steel grade and raw materials.
Working temperature is equal to or less than 20 ℃ shelf bearing structure is unfavorable choose Q235A, class B exult.
Bearing structure of steel should have tensile strength, elongation, yield point or yield strength and qualified guarantee of sulphur, phosphorus content, the welding structure is the carbon content should be qualified to ensure that the cold bending section steel is should have qualified to ensure that cold bending experiment.
Shelf structure cohesion shall comply with the following request:
1.Craft welding electrode, selection of electrode model should be adapted to the main metal strength.
2,Active welding and semi-active welding with welding wire, selection of welding wire and flux should be adapted to the main metal strength.
3,Gas shielded welding should choose containing manganese, silicon contour of deoxidizing elements alloy welding wire.
4,Anchor bolt can choose Q235 steel and 16 manganese steel manufacturing.