Hydraulic Test rubber joints: nominal inner diameter of 300mm or less product sampling once every quarter, retractable rubber joints, nominal diameter 350mm-1000mm product sampling once every six months, pump rubber joints, nominal diameter 1200mm more product sampling once a year. Choose one of each sampling specification, one type of product two. One failed test result is then extracted from the product two retest. If you still have a substandard batch of the kinds of products it should be considered as unqualified. Acid, Shanghai rubber joints, Viton (FPM) copolymer formed by the fluorine-containing monomer organic elastomer. It features high temperature resistance up to 300 ℃. Oil-resistant rubber joints are oil and rubber in the best anti-radiation, good resistance to high vacuum performance; electrical insulation, mechanical properties, chemical resistance, ozone resistance, resistance to atmospheric aging resistance are excellent. The disadvantage is poor workability, the price difference noble cold, less elastic breathable. Operating temperature range: 20 ℃ ~ + 200 ℃. Shanghai rubber joint, Serco supply materials, flexible rubber joints provided by Gongyi City Water Supply Materials Co. Serco. Shanghai rubber joint, Serco supply materials, flexible rubber joints Gongyi City Water Supply Materials Co. Serco (www.gyxjbcq.com/) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, Contact: Zhang.