5 баров трения петли (WJ-A04)

1.Patent No.ZL200420013445.5 2.Raw material: excellent 304(or 201)stainless steel 3.10,000 open-close test to make sure durability 4.Quality up to QB/T 3888 standard Technical diagram1.Material: stainless steel. 2.Specification:22", 24"3.Thinkness:3.0mmThe features of adjustable positioning friction stay products:1.High bearing capacity:the main two bearing points are centralized and fixed with bottom screws closely clung to multiply the bearing capacity of hinges to safe bearing levels.2.Low abrasion consumption:the bearing points are changed from traditional sliding type to fixing type to decrease the abrasion consumption of plates and the abrasion of bottom screws (rivets) is greatly decreased.3.Labor-saving: The opening of windows is in the sane direstion of sliding to keep smooth opening.This series of products are suitable for ultra-wide,ultra-high,ultra-heavy or hollow glass aluminum ally,plastic steel casement windows and hung windows.)