Rubber joints divided by the price of generic performance, special, heat-resistant rubber joints three categories, generic categories: suitable for conveying temperature of -15 ℃ ~ 80 ℃ water, acid or alkali solution concentration of 10% or less. Special categories: suitable for special performance requirements, such as oil resistance, plugs, ozone resistance, abrasion or chemical corrosion. Heat categories: suitable for conveying water temperature is above 80 ℃. Water quality testing rubber joints when "inspected once a year, but when there is a change rubber formula under normal production conditions single ball rubber joints, rubber samples should be tested at any time to send each time extracting a plastic material, according to GB / T5749 and GB / Project Inspection T17219 prescribed. If the test results fail, they should retest the rubber compound from the batch Another two samples. If you still have an unqualified then the product is defective. rubber joints manufacturers, rubber joints, Serco strong supply materials technology provided by Serco Gongyi City Water Supply Materials Co., Serco Gongyi City Water Supply Materials Co., Ltd. (www.gyxjbcq.com/) strong, credible, in Zhengzhou, Henan gate valve industry has accumulated a a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Serco water into the brilliant material and you work for a better future!