The company specialized lifting equipment design and manufacturing research, the US standard shackle Product Features unloading buttoned body made of high quality carbon structural steel or alloy steel forging and heat treatment, small size and high strength. Shackle test load is 2 times working load limit, breaking load is 4 times the working load limit. * Main purpose and scope of rigging shackle end fittings can be used directly in connection with the hanging objects lifting operations. American Standard shackle can be used between the end fittings and rigging heavy d-type shackle, only connecting role. When rigging and beams used in conjunction with American Standard rigging shackle can be used instead of rings and beam the lower tip of the ear-board connector for easy installation and removal. American Standard shackle lifting operation is the most widely used connection tool, lifting mainly used to connect parts of the regular installation and removal. Hebei Yongnian Yuan Long is a set up earlier, large-scale research, development, production as one of the industry manufacturers, production equipment, precision machining, quality assurance GB d-type shackle, management science galvanized d-type shackle, strong technical force, advanced technology and reasonable, well-equipped. Bow shackle on the domestic market commonly used classification bow shackle, according to the production standards are generally divided into national standard, American standard, Japanese standard three; can be divided according to type and mother bow shackle (omega-shaped) and bow shackle with mother . By the use of marine and land sites can be divided in two. Safety factor of 4 times, 5 times, 6 times. The material, a common carbon steel, alloy steel, stainless steel, high strength steel. Surface treatment is generally divided into galvanized (hot dip and plating). d-type shackle Size _ Yuan Long is optimal (certified) _ Pingxiang d type shackle from Yongnian County Yuan Long Fastener Manufacturing Limited. Yongnian County, Yuan Long Fastener Manufacturing Co. (www.hdyljgj.com) (www.hdyljgj.com) is Handan, fasteners leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness , and satisfy customer needs. Yuan Long fastener leadership with the staff warmly welcome all inquiries negotiations to create meta-long fasteners a better future. You can also access (www.hdyljgj.com/supply_details_43148530.html), for more information about the company.