The Surface treatments are available for: Black Oxide, Gray Phosphate, Black Phosphate, Zinc Plated, Yellow Zinc Plated, Black Zinc Plated, Nickel Plated, Chrome Plated, Zinc-Nickel Plated, Hot DIP Galvanized, Mechanical Galvnized, Wax, Dacromet Coating and brass plated, etc. The mechanical performance class/grade of carbon steel are 4.8(4.6, 5.8), 8.8, 10.9, 12.9 according to DIN standard, and GR2, GR5, GR8, B7 according to ANSI standard; Stainless steel 201, 304, 316. Which are applied to connectors of shield tunnel segment (concrete), wind-power screws series, nuclear-power assembling fasteners, steel structure bolts series and other non-standard components for solar power, etc, both of which enjoy great popularity among customers at home and abroad.
Focusing on products quality, our company has enjoyed high reputation in both domestic and overseas markets over the past years. As a forward thinking company, we are striving to improve our knowledge and expertise to enable us to offer the good quality and value-added service to our customer. We are looking forward to cooperating with you and establish long-term business relationship with our partner in future.