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1. Scope This standard applies to package furnaces. For the purpose of this standard, a package furnace is a gas-fired, warm-air furnace wi th an input rate exceeding 400,000 Btu per hour (117.2 kW) for installation in commercial or industrial structur

定价: 1365元 / 折扣价: 1161

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1. SCOPE 1.1 This Standard applies to tubular rigid metallic support members and associated fittings intended for the support and connection of supply service wires for installations operating at potentials of 750 volts or less in accord?ance with the ru

定价: 501元 / 折扣价: 426

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定价: 2048元 / 折扣价: 1741

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1. Scope 1.1 This Standard describes a procedure for the measurement of A-weighted sound levels in and around industrial, institutional, or commercial sites. 1.2 This Standard applies to the measurement of sounds that are essentially non-impulsive

定价: 319元 / 折扣价: 272

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定价: 975元 / 折扣价: 829

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定价: 1229元 / 折扣价: 1045

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1. Scope 1.1 This Standard covers the performance, construction, testing, marking, installation, operation, and servicing of complete commercial/industrial pressure washers and steam cleaners that are either gas-fired or oil-fired. 1.2 The Standard

定价: 455元 / 折扣价: 387

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