friction stay(heavy duty)

タイトルまたは説明

Stainless steel window hinges series 1)Meterial:SS**4 with 8% nickel.SS**1 with 5% nickel, SS**2 , SS**1. 2) Be suitalbe for top- hung, side -hung and bottom-hung windows and ventilators. 3)Operates normally after ****0 times strict opened/closed. 4)It provides adepuate friction at all opening angles. 5)Available for left and right hands. 6)All friction stays are tested to rigorous salt-pray test for protection against corrosive atmospheres. 7)Fine workmanship .Easy to install. 8)Durable, secure and operates smoothly. 9) The products are conformed to national technical standard QB/T********9 for .