定价： 260元 / 折扣价： 221 元

定价： 605元 / 折扣价： 515 元 加购物车

定价： 345元 / 折扣价： 294 元 加购物车

定价： 481元 / 折扣价： 409 元

定价： 345元 / 折扣价： 294 元 加购物车

This specification covers the design and material requirements as well as the construction strainer boxes used in ships' bilges and other tank locations requiring trash protection for suction pipes and pumps. Materials covered by this specification are Types 1 and 2 strainer boxes, which shall be manufactured free of defects, burrs, and sharp edges, and with dimensions conforming to the requirements specified. The strainer boxes shall be hot galvanized after fabrication.1.1 This specification covers the design, materials, and construction of strainer boxes for use in ships’ bilges and other such tank locations that require trash protection for suction pipes and pumps.1.2 This specification covers pipe sizes from NPS 11/2 through NPS 16 (see Note 1).NOTE 1: The dimensionless designator NPS (nominal pipe size) has been substituted in this specification for such traditional terms as “nominal diameter,” “size,” and “nominal size.”1.3 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

1 Scope This part of ISO 10079 specifies minimum safety and performance requirements for medical and surgical suction equipment (see Figure 1) for health care facilities such as hospitals, for domiciliary care of patients and for field and transport us

定价： 1001元 / 折扣价： 851 元

1 Scope This part of ISO 10079 specifies safety and performance requirements for manually powered medical suction equipment intended for oro-pharyngeal suction. It covers equipment operated by foot or by hand or both (see Figure 1). Non-electrical suct

定价： 637元 / 折扣价： 542 元

1 Scope This part of ISO 10079 specifies safety and performance requirements for medical suction equipment powered from a vacuum or pressure source (see Figure 1). In particular it applies to connections for pipelines and Venturi attachments. Suction

定价： 819元 / 折扣价： 697 元

5.1 Soil suction is a measure of the free energy of the pore-water in a soil. Soil suction in practical terms is a measure of the affinity of soil to retain water and can provide information on soil parameters that are influenced by the soil water; for example, volume change, deformation, and strength characteristics of the soil.5.2 Soil suction is related with soil water content through water retention characteristic curves (see Test Methods D6836). Soil water content may be determined using Test Method D2216.5.3 Measurements of soil suction may be used with other soil and environmental parameters to evaluate hydrologic processes (1) and to evaluate the potential for heave or shrinkage, shear strength, modulus, in situ stress and hydraulic conductivity of unsaturated soils.5.4 The filter paper method of evaluating suction is straightforward with a range from 10 to 100,000 kPa (0.1 to 1000 bars).NOTE 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself ensure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.1.1 This test method covers laboratory filter papers as passive sensors to evaluate the soil matric and total potential (suction), a measure of the free energy of the pore-water or tension stress exerted on the pore-water by the soil matrix (1, 2).2 The term potential or suction is descriptive of the energy status of soil water.1.2 This test method controls the variables for measurement of the water content of filter paper that is in direct contact with soil or in equilibrium with the partial pressure of water vapor in the air of an airtight container enclosing a soil specimen. The filter paper is enclosed with a soil specimen in the airtight container until moisture equilibrium is established; that is, the partial pressure of water vapor in the air is in equilibrium with the vapor pressure of pore-water in the soil specimen.1.3 This test method provides a procedure for calibrating different types of filter paper for use in evaluating soil matric and total potential.1.4 Units—The values stated in SI units are to be regarded as standard. The inch-pound units given in parentheses are mathematical conversions, which are provided for information purposes only and are not considered standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

定价： 590元 / 折扣价： 502 元 加购物车

1.1 This safety performance specification provides requirements for safety in design and installation when using a suction-limiting vent system for suction entrapment prevention in swimming pools, spas, hot tubs, or wading pools.1.2 The purpose of the vent is to relieve the vacuum at the suction outlet(s) caused by any blockage of the suction outlet(s). The vent is intended to prevent body entrapment at the suction outlet(s) and may also mitigate limb entrapment. It is not intended to prevent other injuries caused by the suction outlet(s) such as hair entrapment, mechanical entrapment, or evisceration.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 / 折扣价： 438 元 加购物车

1 Scope This International Standard specifies requirements for suction catheters made of plastic materials and intended for use in suction of the respiratory tract. Specialized suction catheters, e.g. those with more than one lumen, are excluded fro

定价： 455元 / 折扣价： 387 元

CSA Preface This is the second edition of CAN/CSA-E60335-2-2, Household and similar electrical appliances - Safety - Part 2-2: Particular requirements for vacuum cleaners and water-suction cleaning appliances, which is an adoption, with Canadian deviat

定价： 1001元 / 折扣价： 851 元