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JB 9972-1999 Noise limits for thread rolling machines, spring coiling machines and nail making machines
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This standard specifies the noise limits for sound power levels and sound pressure levels of thread rolling machines, spring coili
1970-01-01 category：Machinery Industry Standard (JB)+ View
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JB 9971-1999 Noise limits for pipe bending machines and three-roller plate rolling machines
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JB 9971-1999 This standard is a revision of ZB J62 006.5-87 "Noise limits for forging machinery - Noise limits for pipe bending ma
2024-09-23 category：Machinery Industry Standard (JB)+ View
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JB 9970-1999 Noise limits for punching and shearing machines and combined punching and shearing machines
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This standard specifies the noise limits of sound power level and sound pressure level of punching and shearing machines and combi
2024-09-23 category：Machinery Industry Standard (JB)+ View
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JB 9969-1999 Noise limits for bar shears, crocodile shears and plate shears
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JB 9969-1999 This standard is a revision of ZB J62 006.3-87 "Noise limits for forging machinery - Noise limits for bar shears, cro
2024-09-23 category：Machinery Industry Standard (JB)+ View
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JB 9968-1999 Noise Limits for Open Type Presses
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JB 9968-1999 This standard is a revision of ZB J62 006.2-87 "Noise Limits for Forging Machinery - Noise Limits for Open Hydraulic
2024-09-23 category：Machinery Industry Standard (JB)+ View
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JB/T 5880-1991 Safety requirements for centrifugal stove blowers
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This standard specifies the safety requirements and test methods for centrifugal hair dryers. This standard applies to single-phas
1970-01-01 category：Machinery Industry Standard (JB)+ View
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JB 5869-1991 Technical Specifications for YBZS Series Flameproof Two-speed Three-phase Asynchronous Motors for Hoisting
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Replaced by JB/T 5869-2005 JB 5869-1991 Technical Specifications for YBZS Series Flameproof Two-speed Three-phase Asynchronous Mot
2024-09-20 category：Machinery Industry Standard (JB)+ View
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JB 5796-1991 Marine low voltage air circuit breaker
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This standard specifies the classification, technical requirements, test methods and inspection rules of marine low-voltage air ci
2024-09-20 category：Machinery Industry Standard (JB)+ View
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