M3 * 12 Jiaxiang stainless steel screws, M4 * 10 Yanggu stainless steel screws, M4 * 8, M5 * 10, M6 * 12 and so on are available from stock. But if not in stock, then there is a certain amount, you can also arrange production. Production cycle for 3-5 days. Some emergency goods, of course, can improve production efficiency Chiping stainless steel screws, you do not need that long. Flange Usage Note: Use piped liquid, gas, coupled mostly flange connection. In order to reduce the (anti-corrosion, high-altitude, underground passage, etc.) special conditions replacement frequency, use a good anti-corrosion stainless steel flanges or PVC plastic and other materials, then we should use stainless steel fasteners (screws, screw cap) to join and fixed. The main characteristics of the flange connection: 1.1 screws, nuts firmly locked in the pre-process time can cause cause uneven flange faces are not parallel (Figure 1). Namely: flange with screw locking direction is not perpendicular to the surface lead screw and nut threads role is not in full contact. 1.2 In order to ensure a good seal, will increase the rubber gasket between the two flanges, stainless steel screws when the locking torque force reaches safety security, but there is still a gap between the flange and rubber gasket, the operator will often continue to force lock, causing the locking force exceeds the safe torque. 1.3 During installation, there is often a hole is not on the top and bottom flanges or some eccentric (screw mounting holes can not be passed), forced threaded mounting screws can cause the appearance of injuries, plastics, iron and other debris can fall into the screw and screw cap screw them. Yanzhou stainless steel screws, Jinan Road ground (certified), stainless steel screws provided by Jinan Daoqin Trading Company. Jinan Daoqin Trading Company (www.daoqinshangmao.com) (www.daoqinshangmao.com) Shandong Jinan, hardware accessories leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Jinan Road ground in leadership with the staff warmly welcome all inquiries negotiations to create Jinan Daoqin a better future.