定价： 345元 / 折扣价： 294 元 加购物车

4.1 Automobile and truck radiators and heater cores are now predominantly made with aluminum alloys using various manufacturing processes including brazing with a flux (See Appendix X1 for additional information). The presence of residual internal brazing flux in heat exchangers along with the high ratio of internal aluminum surface area to coolant volume may affect certain physical and chemical properties and corrosion protection of the coolant. This test method provides a screening test to assess engine coolant physical and chemical properties and corrosion protection after aging it in a heat exchanger brazed with flux at elevated temperature under stagnant conditions. This method cannot stand alone as evidence of satisfactory coolant performance in flux-brazed aluminum heat exchangers. The actual service of an engine coolant formulation can be determined only by more comprehensive bench, dynamometer, and field tests.1.1 This test method covers a laboratory screening procedure for evaluating engine coolant compatibility and corrosion protection after aging two weeks at 90 °C in an aluminum heat exchanger brazed using flux.1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.3 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.1.4 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： 515元 / 折扣价： 438 元 加购物车

3.1 Expanded welded socket joints may be used with the following pipe and tube:3.1.1 Seamless Copper Tube—2.375-in. (60-mm) outside diameter through 6.625-in. (170-mm) outside diameter.3.1.2 Seamless Copper-Nickel Tube—2.375-in. (60-mm) outside diameter through 6.625-in. (170-mm) outside diameter.3.1.3 Seamless Copper Water Tube—2.125-in. (55-mm) outside diameter through 4.125-in. (105-mm) outside diameter.3.1.4 Seamless Stainless Steel Pipe—2 NPS through 6 NPS, Schedules 5 and 10.3.2 Expanded silver brazed socket joints may be used with the following tube:3.2.1 Seamless Copper Tube—2.375-in. (60-mm) outside diameter through 6.625-in. (170-mm) outside diameter.3.2.2 Seamless Copper-Nickel Tube—2.375-in. (60-mm) outside diameter through 6.625-in. (170-mm) outside diameter.3.2.3 Seamless Copper Water Tube—2.125-in. (55-mm) outside diameter through 4.125-in. (105-mm) outside diameter.3.3 Expanded welded and silver brazed socket joints may be used where experience or test has demonstrated that the joint is safe and suitable for design and operating conditions, and where adequate provision is made to prevent separation of the joint.1.1 This practice covers expanded welded and silver brazed socket joints for use on shipboard piping systems.1.2 Expanded welded and silver brazed socket joints are to be used to join two pipes or tubes having the same NPS (see Note 1) without using a fitting or butt weld.1.3 Brazed socket type joints are not intended for use on systems containing flammable or combustible fluids in areas where fire hazards exist or where the service temperature exceeds 425°F (205°C).1.4 Brazed joints depending solely upon a fillet weld rather than primarily upon brazing material between pipe/tube and socket are not covered by this practice.NOTE 1: The dimensionless designator nominal pipe size (NPS) has been substituted in this practice for such traditional terms as “nominal diameter,” “size,” “nominal size,” and “iron pipe size.”1.5 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.1.6 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.1.7 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

This guide is recommended to be used in preparing specifications for the non-destructive evaluation of brazed or welded electrical contact bonded area.6 The recommended procedures are meant to improve the reproducibility of test data among various laboratories. Specific differences among equipment models and technician skills do exist which will limit absolute correlation. This guide provides an indication of the degree of variability which has been observed as realistic among industry participants. Ultrasonic testing alone does not insure an understanding of bonded integrity. Other attributes (that is, strength) may require correlation with destructive test methods.1.1 This guide describes ultrasonic testing procedures that can be used for evaluating the bond quality of electrical contact assemblies manufactured by brazing or welding. 1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.

定价： 0元 / 折扣价： 0 元

This specification covers double-wall, copper brazed steel tubing suitable for general engineering uses, particularly in the automotive, refrigeration, and stove industries for fuel lines, brake lines, oil lines, heating and cooling units, and the like. The tubing shall be made by rolling steel strip into the form of tubing and subsequently copper brazing in a reducing atmosphere. The steel shall conform to the prescribed chemical composition and shall be subjected to heat analysis and product analysis. Tension, flattening, expansion, bending, and pressure proof tests shall be made in accordance with the specification.1.1 This specification covers double-wall, copper-brazed steel tubing suitable for general engineering uses, particularly in the automotive, refrigeration, and stove industries for fuel lines, brake lines, oil lines, heating and cooling units, and the like. The tubing is available in either of two types, single strip or double strip as shown in Fig. 1.FIG. 1 Brazed Tubing, Double-Wall, 360-deg Brazed Construction1.2 Units—This specification is expressed in both inch-pounds units and in SI units; however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply. The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. In this specification hard or rationalized conversions apply to diameters, lengths, and tensile properties. Soft conversion applies to other SI measurements.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 / 折扣价： 438 元 加购物车