GB/T 4689. 21-1996.Leather - Determination of absorption of water.5试样用模刀切取试样,切时粒面向上，然后按GB4689.2进行空气调节。6试验条件所有操作都必...
GB/T 4689. 20-1996.Leather- Determination of adhesion of finish.1范围GB/T 4689. 20规定了皮革涂饰层与皮革之间(或涂饰层与涂饰层之间)的粘着牢度测定方法。...
GB 4689.18-1984.Leather一Calculation of degree of tannage, leather substance and bond organic substance.GB 4689.18规定了植物鞣革鞣透度、革质以及结合鞣质的计算方...
GB 4689.15-1984.Leather-Determination of chrome oxide.4.1 高氯酸法将1~ 5g皮革试样的灰分(见注①)装人300m!三角瓶或凯氏烧瓶。加入5 ml浓硫酸和10 m160~ 70...
GB 4687-1984.Paper，board， pulp terms ( I ).GB 4687解释了有关纸、纸板、纸浆及其性质和工艺过程的术语、词汇。GB 4687参照了国际标准ISO 4046- -1978...
GB/T 4393一 1995.Open- end wrenches ,box wrenches and combination wrenches- Tecbnical spectfications.3.6.1扳手开口两侧 面表面粗糙度的Ra值不低于12.5μm。扳手孔表...
GB/T 4392-1995.Sugging open-end wrenches and slugging box wenches.1主题内容与适用范围GB/T 4392规定了敲击呆扳手和敲击梅花扳手的型式、基本尺寸、技术要...
GB/T 4388-2008.Types of open-end wrenches ，box wrenches and combination wrenches.1范围GB/T 4388规定了扳拧螺栓和螺母或其他紧固件的呆扳手、梅花扳手.两用扳...
GB/T 3903.14-2005/ISO 20874:2001.Footwear-Test methods for outsoles-Needle tear strength.1范围GB/T3903的本部分规定了鞋类外底材料针撕破强度的测定方法。2规范...
