If you can provide the following project data, we are able offer you with accurate quotation.1.Data For Design*Dead Load/Live Load*Wind speed(KM/H) *Snow load (KG/M2) *Rain load (KG/M2) *Earthquake load if have  *Demands for doors and windows  *Crane (if have) ,Crane span, crane lift height, max lift capacity, max wheel pressure and min wheel pressure!2.Material Quality*Windows and doors quantity,size and location*Roof and wall material ,sandwich panel or corrugated steel sheet (steel sheet can not heat insulation)3.Type*size--width,length,eave height and roof slope*single slope or double slope*single floor,double floor or multi floorsteel structure---specificationBrand NameEach MetalItem Name:Steel Structure BuildingMaterial:Grade Q235, equivalent to ASTM A36. Grade Q345, equivalent to ASTM A572.Section:Any product shape according to customer's requirementsCertification:ISO quality system, Chinese GB50221-2001Sand Blast:Sweden SA 2.5 Sand blastingWelding Technology:Single level butt welding, fillet welding by electric arc welding,  and Gas shielded welding.Surface treatment:Hot dip galvanized, Epoxy zinc rich primer Standard: ISO1461(1999),JIS H 8641-1999,ASTM A 123/A 123M-02Welding TestingUltrasonic Testing, X-ray TestingManufacturing TechnologyDrilling, Cutting, Assembling, Welding, Rectification, Testing etcMain ComponentsBaseCement and steel foundation boltsMain frameH beamPurlinC or z purlin: Size from C120~C320, Z100~Z20BracingX-type or other type bracing made from angle, round pipe, etcBoltPlain bolt and High-strength boltRoof &wallSandwich panel or color plateDoorSliding or rolling doorWindowAluminum alloy windowSheet0.5mm or 0.6mm galvanized sheetAccessoriesSemi-transparent skylight belts,Ventilators, down pipe, Galvanized gutter, etc The reason for choose each metalØ Workshop pre-install.Ø Professional on-site guidanceØ Ensure the product quality.Ø Timely service and progressØ Production according welding rules a = 0.7 x thickness of webØ Continuous welding on both sides of each piecesØ Mark every beam on the bottom plate for being saw after being galvanizedØ Send pictures to the buyer by mail during products being processedØ We have 17 years experience of designing and producing steel structure buildingØ Locating in the Shanghai, only need 1 hour by car, the land transport cost cheaperØ Our engineers with 20 years steel structure design experience and advanced design software and strictdesign design attitudeSurface TreatmentHot dip galvanizeØ Standard: JIS, DIN, ASTM B695-2000Ø Hot dip galvanizing hole cutting good looking on surface ofØ Galvanizing process:Steel structural components →Degreasing →Rinsing→ Pickling →Rinsing → Fluxing → Galvanizing →Quenching → (Passivation) → Inspecting →Finished ProductPaint1.Primer paint one coat 20-30 um2.Middle paint two coat 40-60 um3.Finish paint one coat 20-30 um Paint type: 1,red primer  2,zinc primer  3,Alkyd primer