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Ningbo Yinzhou Donghai High Strength Fasteners Factory

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Ningbo Yinzhou Donghai high strength fastener factory is located in Hengxi Town of Ningbo Zhejiang china, specializing in the production of non-standard high strength fasteners has a history of 20 years, have all kinds of processing equipment and experienced technicians. Products include non-standard high strength fasteners, bolts, stud, screw, and valve stem of ball valve including ASTM A182 304, 316, 321, 410 and 420 material.

Valve stem: specifications from D15~DN300, valve stem is suitable for different specifications, products are exported to USA, Europe, South Korea and other countries, such as American Flow-TEK.INC .Valve stem, valve rod machining precision, surface roughness of the mirror polishing, stem surface roughness 0.8.

Fastener : ISO 4762, DIN912 Hexagon socket head cap screws; ISO 4014, ISO 4017, DIN931, DIN 331,DIN933 hexagon head bolts; ISO 7412,DIN 6914 high strength bolts with large hexagon head , DIN 6914 steel structure, with six hexagon fit bolts GB27 reaming, shear type high strength bolt torsion with GB3632 steel structure; non standards bolts, specializing in the production of 8.8 grade, 10.9 grade, 12.9 grade high strength fasteners, specifications from M20~M100, unlimited length, material including 35#, 40Cr, 35CrMoA, 42CrMoA, 25Cr2MoVA, 20MinTiB, ASTM A193 B7, B7M, A194 2H and other various grades of material.

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