ASTM A193/A193M B16 All Threaded Rods All Threaded Bars
API Flange Valve Wellhead All Threaded Stud Bolts
Alloy steel bolting for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.
Standard: IFI-136, DIN975
Inch Size: 1/4”-4” with various lengths
Metric Size: M6-M100 with various lengths
Other Available Grade:
ASTM A193/A193M B7, B7M, B16 B8 Class 1 & 2, B8M Class 1 & 2,
ASTM A320/A320M L7, L7M, L43, B8 Class 1 & 2, B8M Class 1 & 2, and so on.
Finish: Plain, Black Oxide, Zinc Plated, Zinc Nickel Plated, Cadmium Plated, PTFE etc.
Packing: Bulk about 25 kgs each carton, 36 cartons each pallet
Advantage: High Quality and Strict Quality Control, Competitive Price,Timely Delivery; Technical Support, Supply Test Reports
Please feel free to contact us for more details.
ASTM A193
Scope
Originally approved in 1936, this specification is heavily utilized in petroleum and chemical construction applications. The ASTM standard covers alloy steel and stainless steel bolting materials for high temperature service. This specification includes fasteners intended for use in pressure vessels, valves, flanges, and fittings. Although, this material is often available in national coarse (UNC) thread pitches, if being used in traditional applications, threads are specified 8 threads per inch (tpi) for diameters above one inch.
Below is a basic summary of a few of the common grades. ASTM A193 covers a number of other standard specifications not covered in this description including B5, B6, and B16.
Grades
B7 | Alloy steel, AISI 4140/4142 quenched and tempered |
B8 | Class 1 Stainless steel, AISI 304, carbide solution treated. |
B8M | Class 1 Stainless steel, AISI 316, carbide solution treated. |
B8 | Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened |
B8M | Class 2 Stainless steel, AISI 316, carbide solution treated, strain hardened |
Mechanical Properties
Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
B7 | Up to 2-1/2 | 125 | 105 | 16 | 50 |
2-5/8 - 4 | 115 | 95 | 16 | 50 | |
4-1/8 - 7 | 100 | 75 | 18 | 50 | |
B8 Class 1 | All | 75 | 30 | 30 | 50 |
B8M Class 1 | All | 75 | 30 | 30 | 50 |
B8 Class 2 | Up to 3/4 | 125 | 100 | 12 | 35 |
7/8 - 1 | 115 | 80 | 15 | 35 | |
1-1/8 - 1-1/4 | 105 | 65 | 20 | 35 | |
1-3/8 - 1-1/2 | 100 | 50 | 28 | 45 | |
B8M Class 2 | Up to 3/4 | 110 | 95 | 15 | 45 |
7/8 - 1 | 100 | 80 | 20 | 45 | |
1-1/8 - 1-1/4 | 95 | 65 | 25 | 45 | |
1-3/8 - 1-1/2 | 90 | 50 | 30 | 45 |
Recommended Nuts and Washers
Bolt Grade | Nuts | Washers |
B7 | A194 Grade 2H | F436 |
B8 Class 1 | A194 Grade 8 | SS304 |
B8M Class 1 | A194 Grade 8M | SS316 |
B8 Class 2 | A194 Grade 8 | SS304 |
B8M Class 2 | A194 Grade 8M | SS316 |
Strain hardened nuts available as a supplementary requirement
DTIs Turna Sure | Presentación
DTIs Turna Sure | Instalación e inspección.
Tecnología de Apriete para Conseguir la Tensión Correcta en Uniones Atornilladas de alta resistencia:
Los DTIs de TurnaSure se fabrican actualmente conforme a los siguientes estándares:
ASTM F959 y F959M para su empleo con tornillos en sistema métrico o internacional conforme a los estándares ASTM A325 y A490.
Estandar CEN prEN 14399-9 (en sustitución del BS 7644) para su empleo con fijadores estructurales conforme a la Norma Europea CEN.
Estandar ASTM F2437-06 sobre Indicadores Directos de Tension de acero al carbono tipo arandela compresible, para su empleo con tornillos roscados, anclajes y espárragos.
Los DTIs de TurnaSure se fabrican para su empleo con tornillos estructurales conforme a la norma DIN 6914 10.9 y anorma japonesa JISB 1186-F10T para Tornillos Estructurales de Alta Tensión.
Ventajas de nuestro Indicador Directo de Tensión patentado
Garantiza que los tornillos, anclajes, o espárragos roscados tienen la tensión apropiada.
Mejora la rigidez estructural.
Revisa cada parte del conjunto de cada sujeción por razones de compatibilidad y conformidad.
Reduce las actividades y costes de inspección y es más segura para los inspectores de acero estructural.
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