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We have been processed High carbon chrome steel ball and High-carbon chromium stainless steel ball for 52 years. We were the first ball factory of China and made a significant contribution to the new China.We are all successful for supporting them. For example, Bundled rocket Long March II, Intercontinental missile developed by China itself,2008 Beijing Olympic Games rotary reactor shield plug, Navy self-propelled artillery headquarters 76MM, One temple in 2014 manned moon rocket warehouse. They were registered in the Ministry of national defense. At the same time, we have achieved the certification of quality system of ISO9001:2000. More importantly, we are the only manufacturer to produce more than 150MM of high carbon chrome steel ball. Our products covered 19.05MM-203.2MM. Our products of accuracy covered G10-G1000.The only one specialized producer in China for the production of steel ball (3/4”-8”) and stainless ball (3/4”-5”) .We can also provide non-standard balls at customer’s request, such as different balls made of copper and copper alloys ,etc.Particularly , the extraordinary large - size steel balls are unique in China. Valve seats and valve balls ,made of new materials 440C and 440A , High wear-resistance ,high corrosion - resistance and long service life. Especially applicable for petroleum and chemicial industries. The accurate , up-to - date and complete examination system, and the strict quality control system ensure reliable qualities for TRIANGLE products. We can provide the good quality of services, fast delivery and competitive prices. We are willing to accept the special requirements of customers and do well every steel ball for the customer. The world is our market. Believe us, Please choose the Triangle brand!