5.1 This guide is not intended to measure the precise temperature range for dispensing and curing product under all the possible substrate and environmental factors but to provide a basis for benchmarking a foam sealant product under specific laboratory conditions.5.2 The product user is encouraged to evaluate each application and determine suitability for actual use.1.1 This guide covers the general effects of temperature from the aerosol foam sealant (either polyurethane or latex types) under the use temperatures.1.2 The guide is intended to estimate the observed product dispensing characteristics and foam quality of aerosol foam dispensed or cured, or both, at specific temperatures and standard conditions.1.3 Such foam sealants are primarily intended to reduce air movement in and out of building enclosures.1.4 Currently two main foam sealant types are applicable to this standard: single component polyurethane and latex.1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.6 There are no other known test methods specific for measuring the product temperature range for aerosol foam sealant.1.7 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.1.8 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 加购物车
This specification deals with safeguarding against warpage and distortion during hot-dip galvanizing of steel assemblies. Common distorted and warped members of assemblies are sheets or plates assembled by welding or riveting. The following can cause warpage and distortion: use of nonsymmetrical sections such as channels; use of checkered plate; not properly vented overlapping joint for two pieces of steel; and too large assembly for a particular galvanizing kettle. Suggested corrections for panel fabrication are detailed.1.1 Steel assemblies and subassemblies fabricated by welding, such as composite structural members, sash, weldments, etc., that are to be hot-dip galvanized after fabrication, are subject to warpage and distortion of the material due to the heating and cooling integral to the galvanizing operation, particularly when it is necessary for the assembly to be dipped more than once to coat the entire surface.1.2 This specification is applicable in either inch pounds or SI units. Inch pounds and SI units are not necessarily exact equivalents. Within the text of this specification and where appropriate, SI units are shown in parentheses.1.3 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 加购物车