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China's leading Manufactures and International suppliers of nuts, bolts and screws
We manufacture the highest quality nuts bolts and fasteners. Just contact us for quantity and pricing.
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If for any reason you are not completely satisfied with your purchase, simply return it for exchange, replacement, or refund including the original shipping for full returns.

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Tri-Steel respects the privacy of its users. It is our promise that:
No personal information is collected unless you specifically give it to us.
We never engage in the selling of our customer list.
We only send information to customers who specifically request it.

Without Certified Quality Management System you do not have a continuous improving product quality system to consistently and continuously meet or exceed customer requirements. TRI-STEEL is certified to ISO 9001: 2008. TRI-STEEL  has been registered by STR-Registrar, LLC, The documented TRI-STEEL  Quality Management System includes product inspection verification throughout its product realization process from receiving, in-process, and final inspection as well as any customer required first article inspection. Positive Material Identification (PMI) monitoring of raw materials and final product is performed on all products manufactured.

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Tri-steel are manufacturers of stainless steel and nickel alloy special fasteners. Established in 1998, Tri-steel has grown into one of the most respected hot forgers and producers of high integrity fasteners in the China.
Our facilities combine the latest in induction hot forging machinery with CNC precision, and automatic and manual lathes.

Our employees are skilled and have experience at the highest levels.  Many of our accomplished machinists have joined our company from other fastener companies and have brought with them years of experience.
Products that can be manufactured in-house include Hexagon Head Bolts, Socket Head Cap screws, Studs, Hexagon Nuts, Socket Countersunk Screws, Cup Square Bolts, Socket Setscrews & other specialized fasteners.
Tri-steel Quality Management System is approved to ISO 9001:2008 and TUV NORD.
We are able to offer in many materials including Hastelloy ®, Titanium, Inconel ® Alloy 600 , 601, 625 , 718 , Incoloy ® Alloy 800 HT, 825 , Monel ® Alloy 400 , K500 , Duplex UNS S31803, Super Duplex S32760 SA & FLT, Zeron 100 ®, S32550, S32750, Aluminium Bronze , Stainless Steels Astm A193 B8M, B8 , B8C, Class 1 or Class 2, A4, A4-80, A2, 316L, 304L, 904L, 310.

hardness testing
 metallographic analysis
100% Customer Satisfaction Guarantee
Tri-steel Co.,LTD
TEL: +86 515 85511160 FAX: +86 515 85511160
Skype: tristeel304