{"product_id":"650mm-hot-rolled-alloy-steel-bar","title":"650mm Hot Rolled Alloy Steel Bar","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eProduct Introduction\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003e650mm Hot Rolled Alloy Steel Bar is a large-diameter alloy steel product designed for \u003cstrong\u003eheavy-duty industrial applications\u003c\/strong\u003e requiring high strength, toughness, and reliable mechanical performance. Manufactured through a \u003cstrong\u003ehot rolling process\u003c\/strong\u003e, it is suitable for further machining, heat treatment, and fabrication according to the selected alloy grade. The bar can be supplied in different alloy steel grades, lengths, surface conditions, and heat treatment conditions to meet specific project requirements. It is commonly used for large shafts, heavy machinery components, gears, rollers, and other industrial parts. Customized dimensions, tolerances, heat treatment, and machining services are available according to customer specifications.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 26.6205%;\"\u003eItem\u003c\/th\u003e\n\u003cth style=\"width: 73.0217%;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003eHot Rolled Alloy Steel Bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eNominal Diameter\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003e650 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003eAlloy Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eCommon Grades\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003e4140 \/ 4145 \/ 4130 \/ 4340 \/ 8620 \/ Other grades available upon request\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eStandard\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003eASTM \/ AISI \/ SAE \/ DIN \/ EN \/ JIS \/ Other applicable standards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eManufacturing Process\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003eHot Rolled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eDiameter\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003e650 mm \/ Customized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eLength\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003eCustomized according to requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eSurface Finish\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003eHot Rolled \/ Black \/ Peeled \/ Turned \/ Ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eHeat Treatment\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003eAnnealed \/ Normalized \/ Quenched \u0026amp; Tempered \/ Customized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eTolerance\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003eAccording to applicable standards or customer requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eProcessing\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003eCutting \/ Turning \/ Grinding \/ Machining \/ Customized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eInspection\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003eChemical Analysis \/ Mechanical Testing \/ Dimensional Inspection \/ Surface Inspection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.6205%;\"\u003eCustomization\u003c\/td\u003e\n\u003ctd style=\"width: 73.0217%;\"\u003eGrade \/ Diameter \/ Length \/ Tolerance \/ Heat Treatment \/ Surface \/ Machining\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eNeed a Customized Solution?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIf you cannot find a 650mm hot rolled alloy steel bar for your project, please contact Queen Metal. We provide customized solutions based on your required \u003cstrong\u003egrade, dimensions, standard, surface finish, end treatment, and application\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eSend us your specifications, technical requirements, drawings, or parameter files, and our team will provide a suitable quotation and supply solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEmail:\u003c\/strong\u003e \u003ca href=\"mailto:ding@queenmetal.com\"\u003eding@queenmetal.com\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eApplications \u0026amp; Industries\u003c\/h2\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 29.6636%;\"\u003eIndustry\u003c\/th\u003e\n\u003cth style=\"width: 69.9786%;\"\u003eTypical Applications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.6636%;\"\u003eHeavy Machinery\u003c\/td\u003e\n\u003ctd style=\"width: 69.9786%;\"\u003eLarge shafts, rollers, machine components and structural parts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.6636%;\"\u003eEngineering Equipment\u003c\/td\u003e\n\u003ctd style=\"width: 69.9786%;\"\u003eHeavy-duty mechanical components and load-bearing parts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.6636%;\"\u003eMining Equipment\u003c\/td\u003e\n\u003ctd style=\"width: 69.9786%;\"\u003eShafts, gears, crusher components and heavy machinery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.6636%;\"\u003ePower Generation\u003c\/td\u003e\n\u003ctd style=\"width: 69.9786%;\"\u003eLarge shafts, turbine-related components and mechanical parts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.6636%;\"\u003eOil \u0026amp; Gas\u003c\/td\u003e\n\u003ctd style=\"width: 69.9786%;\"\u003eHigh-strength shafts, equipment components and mechanical parts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.6636%;\"\u003eConstruction Equipment\u003c\/td\u003e\n\u003ctd style=\"width: 69.9786%;\"\u003eHeavy-duty machinery and structural components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.6636%;\"\u003eIndustrial Manufacturing\u003c\/td\u003e\n\u003ctd style=\"width: 69.9786%;\"\u003eGears, axles, pins, shafts and fabricated components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.6636%;\"\u003eGeneral Engineering\u003c\/td\u003e\n\u003ctd style=\"width: 69.9786%;\"\u003eLarge mechanical components requiring high strength and toughness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eQuality Assurance \u0026amp; Testing\u003c\/h2\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 30.5694%;\"\u003eInspection \/ Testing\u003c\/th\u003e\n\u003cth style=\"width: 69.0728%;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.5694%;\"\u003eChemical Composition\u003c\/td\u003e\n\u003ctd style=\"width: 69.0728%;\"\u003eVerification of alloy steel grade and chemical composition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.5694%;\"\u003eMechanical Testing\u003c\/td\u003e\n\u003ctd style=\"width: 69.0728%;\"\u003eTensile Strength \/ Yield Strength \/ Elongation according to applicable standards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.5694%;\"\u003eHardness Testing\u003c\/td\u003e\n\u003ctd style=\"width: 69.0728%;\"\u003eAvailable according to material condition and order requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.5694%;\"\u003eDimensional Inspection\u003c\/td\u003e\n\u003ctd style=\"width: 69.0728%;\"\u003eDiameter \/ Length \/ Straightness \/ Tolerance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.5694%;\"\u003eSurface Inspection\u003c\/td\u003e\n\u003ctd style=\"width: 69.0728%;\"\u003eSurface condition and visible defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.5694%;\"\u003eUltrasonic Testing\u003c\/td\u003e\n\u003ctd style=\"width: 69.0728%;\"\u003eUT available according to product and project requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.5694%;\"\u003eHeat Treatment Inspection\u003c\/td\u003e\n\u003ctd style=\"width: 69.0728%;\"\u003eVerification of specified heat treatment condition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.5694%;\"\u003eMTC\u003c\/td\u003e\n\u003ctd style=\"width: 69.0728%;\"\u003eMaterial Test Certificate available according to order requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.5694%;\"\u003eThird-Party Inspection\u003c\/td\u003e\n\u003ctd style=\"width: 69.0728%;\"\u003eAvailable upon request\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003ePackaging \u0026amp; Logistics\u003c\/h2\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 30.2459%;\"\u003eItem\u003c\/th\u003e\n\u003cth style=\"width: 69.3964%;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.2459%;\"\u003ePackaging Standard\u003c\/td\u003e\n\u003ctd style=\"width: 69.3964%;\"\u003eExport-standard steel bar packaging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.2459%;\"\u003eSurface Protection\u003c\/td\u003e\n\u003ctd style=\"width: 69.3964%;\"\u003eWaterproof paper \/ Plastic protection where applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.2459%;\"\u003eBundling\u003c\/td\u003e\n\u003ctd style=\"width: 69.3964%;\"\u003eSteel strapping according to bar size and transportation requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.2459%;\"\u003eProtective Packaging\u003c\/td\u003e\n\u003ctd style=\"width: 69.3964%;\"\u003eSuitable protective materials according to product dimensions and shipping requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.2459%;\"\u003eWooden Packaging\u003c\/td\u003e\n\u003ctd style=\"width: 69.3964%;\"\u003eWooden cases available according to product size and shipping requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.2459%;\"\u003eShipping Method\u003c\/td\u003e\n\u003ctd style=\"width: 69.3964%;\"\u003eContainer \/ Bulk shipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.2459%;\"\u003eTransportation Protection\u003c\/td\u003e\n\u003ctd style=\"width: 69.3964%;\"\u003eSuitable protection for long-distance ocean transportation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.2459%;\"\u003eMOQ\u003c\/td\u003e\n\u003ctd style=\"width: 69.3964%;\"\u003eAccording to grade, diameter, length and order requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.2459%;\"\u003eLead Time\u003c\/td\u003e\n\u003ctd style=\"width: 69.3964%;\"\u003eConfirmed according to material availability, processing and order quantity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.2459%;\"\u003eCustomized Logistics\u003c\/td\u003e\n\u003ctd style=\"width: 69.3964%;\"\u003ePackaging and shipping arrangements available according to customer requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eFAQS\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003ch3 class=\"PDq2pG_selectionAnchorContainer\"\u003e1. What is a 650mm Hot Rolled Alloy Steel Bar?\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003eA 650mm Hot Rolled Alloy Steel Bar is a large-diameter alloy steel bar with a nominal diameter of 650 mm, manufactured through \u003cstrong\u003ea hot rolling process for heavy-duty industrial applications\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e2. What grades are available for 650mm alloy steel bars?\u003c\/h3\u003e\n\u003cp\u003eCommon alloy steel grades \u003cstrong\u003einclude 4140, 4145, 4130, 4340 and 862\u003c\/strong\u003e0. Other grades can also be supplied according to applicable standards and customer requirements.\u003c\/p\u003e\n\u003ch3\u003e3. What is 650mm alloy steel bar used for?\u003c\/h3\u003e\n\u003cp\u003eIt is commonly used for \u003cstrong\u003elarge shafts, rollers, gears, heavy machinery components, mining equipment, power-generation equipment\u003c\/strong\u003e and other high-load industrial components.\u003c\/p\u003e\n\u003ch3\u003e4. Can the 650mm alloy steel bar be customized?\u003c\/h3\u003e\n\u003cp\u003eYes. Queen Metal can provide customized grades, lengths, tolerances, heat treatment, surface conditions and machining according to \u003cstrong\u003ecustomer drawings or technical specifications\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e5. Is machining available for the 650mm alloy steel bar?\u003c\/h3\u003e\n\u003cp\u003eYes. \u003cstrong\u003eCutting, turning, grinding and other machining services\u003c\/strong\u003e can be arranged according to the selected alloy grade, material condition and final application requirements.\u003c\/p\u003e","brand":"QueenMetal","offers":[{"title":"Default Title","offer_id":49464176705691,"sku":null,"price":0.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/8850\/5499\/files\/650mm_Hot_Rolled_Alloy_Steel_Bar1.jpg?v=1788751415","url":"https:\/\/queenmetalgroup.com\/products\/650mm-hot-rolled-alloy-steel-bar","provider":"QueenMetal","version":"1.0","type":"link"}