定价： 190元 / 折扣价： 162 元 加购物车

定价： 188元 / 折扣价： 160 元 加购物车

定价： 190元 / 折扣价： 162 元 加购物车

定价： 345元 / 折扣价： 294 元

定价： 0元 / 折扣价： 0 元 加购物车

定价： 481元 / 折扣价： 409 元

定价： 605元 / 折扣价： 515 元 加购物车

定价： 605元 / 折扣价： 515 元 加购物车

定价： 605元 / 折扣价： 515 元 加购物车

定价： 0元 / 折扣价： 0 元 加购物车

定价： 0元 / 折扣价： 0 元 加购物车

定价： 605元 / 折扣价： 515 元 加购物车

This specification covers the material requirements for preformed elastomeric strip seals and the corresponding steel locking edge rail used in expansion joint sealing. The scope of this specification is limited to preformed non-reinforced strip seals that mechanically lock into structural steel locking lugs. The sealing element can consist of a single layer strip or have multiple webs depending on individual project requirements. When used on highway bridges, limits on maximum joint opening and minimum steel thicknesses need to be addressed. The adhesive-lubricant used to install the preformed seal into the steel locking edge rail shall be a one part moisture curing polyurethane compound. The elastomeric seals shall conform to the physical properties prescribed for (1) tensile strength, (2) elongation at break, (3) hardness, (4) oven aging, (5) oil swell, (6) ozone resistance, (7) low temperature stiffening, and (8) compression set. Requirements for preformed elastomeric seal dimensions, sampling, and test methods to determine compliance with the specified physical properties are given.1.1 This specification covers the material requirements for preformed elastomeric strip seals and the corresponding steel locking edge rail used in expansion joint sealing. The scope of this specification is limited to preformed non-reinforced strip seals that mechanically lock into structural steel locking lugs. The sealing element can consist of a single layer strip or have multiple webs depending on individual project requirements. The structural steel locking edge rail shall be anchored into the structure in accordance with the purchaser's specific details. While the scope of this specification is limited to the materials used in fabrication of strip sealing systems, it is recommended that a practical means of testing the watertightness aspects of the individual systems either in the field or at a testing laboratory be developed. When used on highway bridges, limits on maximum joint opening and minimum steel thicknesses need to be addressed.1.2 The values stated in the inch-pound system shall be considered as standard.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

This specification covers the physical property requirements of elastomeric seals (gaskets) used to seal the joints of precast concrete structures used in gravity and low head pressure applications. The seals shall be classified as: Class A; Class B; Class C; Class D; and Class E. All gaskets shall be extruded or molded in such a manner that any cross-section will be dense, homogeneous, and free of porosity, blisters, pitting, or other imperfections. The gaskets shall be fabricated from an elastomeric material meeting the appropriate classification physical property requirements. The following test methods shall be performed to conform to the specified requirements: tensile strength and elongation; hardness; compression set; accelerated aging; water absorption; ozone resistance; oil immersion testing; and splice strength classification.1.1 This specification covers the physical property requirements of elastomeric seals (gaskets) used to seal the joints of precast concrete structures conforming to Specifications C14, C14M, C118, C118M, C361, C361M, C443, C443M, C505, C505M, or C1628 used in gravity and low head pressure applications.1.2 Requirements are given for natural or synthetic rubber gaskets, or a combination of both.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 The following precautionary caveat pertains only to the test method portion, Section 8, of this specification. 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

4.1 This test method covers procedures for conducting tension and vacuum tests on metal-ceramic seals.4.2 This test method is not to be considered as an absolute tension test for the ceramic.4.3 This test method is suitable for quality control and research and development use.AbstractThis test method establishes the standard procedures for conducting tension and vacuum tests on metal-ceramic seals to determine the bond strength of brazed, metalized ceramics. This test method is, however, not to be considered as an absolute tension test for the ceramic. This method requires the use of appropriate testing machines and various types of gripping devices.1.1 This test method covers procedures for conducting tension and vacuum tests on metal-ceramic seals to determine the bond strength of brazed, metallized ceramics.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： 0元 / 折扣价： 0 元