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Sanma Fastener (Zhejiang) Co., Ltd. (formerly known as Haiyan Sanma Standard Hardware Co., Ltd.) is the mainstay of SanmaGroup's fastener manufacturing industry. Sanma Fastener was founded in 2005 and covers an area of 50,000 square meters, with 35.000square meters dedicated to plant operations. Our current annual production capacity is approximately 24,000 tons. We specialize in producing high-strength nuts and 2H nuts, and our products are widely used in various fields such as construcion, automobiles, and electric power.We have a wide range of facilities, including a multi-stage nut machine, annealing furnace, heat treatment production line, and Belgium- imported automatic temperature calcined machine, as well as spheroidizing equipment. With large-scale mass production and quickdelivery, Sanma Fastener has won a high reputation as the largest green fastener company and provider of standard products in China'sfastener industry.Our products have been exported to many countries and regions, such as Europe. America. and Southeast Asia. Wealways strive to provide our customers with high-quality products and excellent services, welcome to visitour factory and cooperate with us.

DIN934/ISO4032/ASMEB18.2.2HEX NUTS；ASTM A194/A563(M),DIN6914,EN14399 HEAVY HEX NUTS；DIN6923,ANSI D-21 HEX FLANGE NUTS；DIN933/931,ISO4014/4017,
ASME B18.2.1,JIS1181 HEX BOLTS，DIN6914/ASTM A325(M) HEAVY HEX BOLTS，DIN6921,IFI111,JIS1189 HEX FLANGE BOLTS