技術要求 | 1 | 螺栓應符合本标準的要求,并按經規定程序批準的圖樣及技術文件制造。 |
2 | 螺栓性能等級的标記制度按:3098.1的規定。 | |
3 | 螺栓材料:中碳鋼或低碳合金鋼。 化學成分和熱處理要求按:GB 3098.1的規定。 | |
4 | 螺紋基本尺寸按:GB 196的規定。 螺紋公差按:GB 197的規定,螺紋直徑公差為:8g。 螺紋表面粗糙度Ra的最大允許值為:12.5μm。 螺紋表面不允許有裂紋、毛刺、斷扣。 | |
5 | 螺杆表面不得有褶皺、裂紋、過燒等質量缺陷。 | |
6 | 螺栓應進行表面鈍化處理。 | |
7 | 螺栓公差按:GB 3103.1的規定。 產品等級為:A級(d≤M16),B級(d>M16) | |
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試驗方法 | 1 | 螺栓機械性能試驗包括:拉力試驗、硬度試驗、保證載荷、脫碳。 (為簡化程序,可采用最低硬度試驗代替拉力試驗,如有争議,拉力試驗作為仲裁方法;脫碳試驗隻在用戶有要求時做,一般不做。) |
2 | 螺栓的機械性能試驗方法按:GB 3098.1中的8.8級B類項目規定的試驗方法進行。 | |
驗收檢查及包裝 | 1 | 產品應由制造廠的技術檢查部門進行檢驗,制造廠應保證每批出廠產品符合本标準要求,并附有產品質量合格證。 |
2 | 產品驗收檢查、标志和包裝應符合:GB 90的規定。 |
Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures
Self-tappingscrew connections - Specification ofthepilotholediameterand tighteningtorque
Composite sealing gasket material
Corrosion of metals and alloys - Corrosivity of atmospheres - Part 1 : Classification, determination and estimation
Corrosion of metals and alloys - Corrosivity of atmospheres - Part 2: Guiding values for the corrosivity categories
Steel wire ropes for general purposes
Specifications for spring washers - Conical spring washers
Specifications for retaining rings-Circlips
Hot formed helical compression springs - Technical Requirement
High-strength structural bolting assemblies for preloading - Part 1: General requirements
Cold coiled helical springs technical specifications - Part 1: Extension spring
Cold coiled helical springs technical specifications - Part 2: Compressions spring
Specification For Wire Thread Inserts
General specifications for packing of mechanical and electrical product
Fasteners - General requirements for bolts,screws,studs and nuts
24° Cone Connectors - Specification
Flared couplings - Specification
Specification of metallic ring-joint gaskets for steel pipe flanges
Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures
Specification of gauges for general purpose screw threads
Fasteners - Marking and packaging
Plain Washers for Bolts, Screws and Nuts - General Plan
Fasteners - Surface discontinuities - Bolts, screws and studs for general requirements
Fasteners-Surface discontinuities - Nuts
Fasteners - Surface discontinuities - Bolts, screws and studs for special requirements
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Specifications For Drive Rivets
Technical requirement for sets of torshear type high strength bolt hexagon nut and plain washer for steel structures
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Oil level indicators technical specification
Counterbores for hexagon socket head and slotted cheese head screws
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Specification for tab washer
Specifications for pins
Spcifications for ring - Cutting rings
Technical requirements of malleable cast iron pipe fittings
Fasteners - Part 27: Steel screws, bolts and studs made of steel with pre-adhesive coating - Technical specifications
metal washers; technical delivery conditions
Steel flat products; Hot rolled plate 3 to 150 mm thick; Permissible deviations of dimension, weight and form
Flat products of steel; cold rolled steel strip; dimensions, tolerances on dimensions and form.
Commercial vehicles - Wheel-hub attachment dimensions
Corrosion of metals and alloys - Corrosivity of atmospheres - Guiding values for the corrosivity categories
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Hydraulic fluid power - Two-, three- and four-port screw-in cartridge valves - Cavities
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Specification of Stamping Die Components
Specifications for parts and units of jigs and fixtures
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High-strength structural bolting assemblies for preloading - Part 1: General requirements
Flanges and their joints - Bolting - Part 3: Classification of bolt materials for steel flanges, class designated
Metallic products - Types of inspection documents
Flanges and their joints - bolting - Part 2: Classification of bolt materials for steel flanges, PN designated
Flanges and their joints - bolting - Part 1: Selection of bolting
Aerospace series - Inserts, screw thread, helical coil, self locking - Technical specification
Aerospace series - Inserts, screw thread, helical coil, self-locking - Assembly procedure
Specification for Selection of Steel Pipe Flanges , Gaskets and Bolting (PN designated)
Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries
Standard Specification for Steel Transmission Tower Bolts, Zinc-Coated and Bare
Mechanical fixation component for waterproofing membrane roofing
Construction machinery and equipment Specification of high strength fasteners
Fastenersart - Standard - Cap Screws, Hex Bolts, and Hex Nuts
Steel Self-Drilling Tapping Screws
Technical conditions for threaded fasteners with adhesive coating-Part 1: Microencapsulated locking coating
Technical condions for threaded fasteners with adhesive coating-Part 2: Polyamlde locking coating
Technical Supply Conditions For Threaded Steel Fasteners - Part 1 General Requirements For Bolts, Screws And Studs
General data for machine screws and tapping screws
Plain nuts and slotted nuts - Part 1: General specification
Disc springs - Calculation