Songjiang Group is supporting DN200 oil-resistant flexible joints and rubber joints for Beijing Vaughn** Co., Ltd. The products have good dielectric resistance. Songjiang Group provides various types of rubber flexible joints for customers all over the country. The following is the introduction of DN200 oil-resistant flexible joints purchased in Beijing.
拿一个,看它的材质是什么,还真难说出来。经过以下几种测试才可以得出结论,一般来说有燃烧法、热空气老化实验、测比重、低温法这几种来测试它的材质。