定价： 3367元 / 折扣价： 2862 元

Addenda to American National Standard Z21.12-1990 for Draft Hoods. Approved April 23, 1993 by American National Standards Institute, Inc. NOTE: Changes, other than editorial, are denoted by a vertical line in the margin.

定价： 728元 / 折扣价： 619 元

Purpose The purpose of this document is to provide a method of measuring the thermal efficiency of Convection and Other than Convection (forced circulation) swimming pool heaters. Scope This document applies to Gas-fired Swimming Pool Heaters at a

定价： 1138元 / 折扣价： 968 元

1.1 Scope 1.1.1 This standard applies to newly produced illuminating appliances constructed entirely of new, unused parts and materials: (a) For use with natural gas; (b) For use with manufactured gas; (c) For use with mixed gas; (d) For use with

定价： 3413元 / 折扣价： 2902 元

1.1 Scope 1.1.1 This standard applies to the construction and installation procedures for newly produced automatic intermittent pilot ignition systems (see Part II, Definitions), hereinafter referred to as "systems", constructed entirely of new, unus

定价： 3458元 / 折扣价： 2940 元

Scope This International Standard applies to bare, hard-drawn, round, aluminum-clad wires of different electrical and mechanical properties, in the diameter ranges shown in table 5, for electrical purposes, before stranding. It is intended to cover a

定价： 637元 / 折扣价： 542 元

1.1 Scope ISO 9918 is one of a series of International Standards based on IEC 601-1; in IEC 601-1 (the "General Standard"), this type of International Standard is referred to as a "Particular Standard". As stated in 1.3 of IEC 601-1:1988, the requirem

定价： 865元 / 折扣价： 736 元

1. Scope This part of International Standard IEC 71 applies to three- phase a.c. systems having a highest voltage for equipment above 1 kV. It specifies the procedures for the selection of the standard withstand voltages for the phase-to-earth, phase-t

定价： 865元 / 折扣价： 736 元

1. Scope This part of ISO 789 specifies a method of determining the turning and clearance diameters of wheeled agricultural tractors. It applies to wheeled agricultural tractors having at least two axles fitted with pneumatic tires.

定价： 410元 / 折扣价： 349 元

1. Scope and Object 1.1 This International Standard is applicable to thermal-links, intended for incorporation in electrical appliances, electronic equipment and component parts thereof, normally intended for use indoors, in order to protect them agai

定价： 819元 / 折扣价： 697 元

1 Scope This part of ISO 10993 specifies methodologies for the evaluation of the systemic toxicity potential of medical devices which release constituents into the body. In addition, it includes pyrogenicity testing. The test methods cited in this p

定价： 410元 / 折扣价： 349 元

Scope Details test and examination criteria for illuminating appliances for use with natural gas, manufactured gas, mixed gas, and liquefied petroleum gases for indoor or outdoor installations.

定价： 728元 / 折扣价： 619 元

Scope Details test and examination criteria for automatic intermittent pilot ignition systems designed to be adapted to existing continuous pilot burners on listed forced air heating appliances and boilers equipped with atmospheric burners. These syst

定价： 683元 / 折扣价： 581 元

1 Scope This clause of part 1 is replaced by: This standard deals with the safety of electric massage appliances for household and similar purposes, their rated voltage being not more than 250 V for single phase appliances and 480 V for other appli

定价： 455元 / 折扣价： 387 元

1. Scope This part of ISO 6405 establishes symbols uniquely for use on operator controls and other displays on earth-moving machinery as defined in ISO 6165. Symbols given in this part of ISO 6405 apply to controls and displays specific to backhoe l

定价： 865元 / 折扣价： 736 元