In fact, "bb" means bearing , Normal doors only need 2bb hinges, while heavier doors can choose 4bb hinges. As one of the important hardware of the door, the quality of the hinge can determine the number of times of opening and closing of the door and the service life.

Qualified UL Listed Hinges, 2BB Stainless Steel Door Hinges Made by SOLIDER GROUP of China, Standard ANSI/BHMA A156.1, Grade 1 with UL R27486 Certificate for North America Markets. Made of Stainless Steel Grade 304, With Solid Axis Pin in Ø15mm. Optional Sizes in Height 4.0”, 4.5″, and 5.0″. OEM/ODM Services are Acceptable!

Description Yale Ball Bearing Hinge-2BB High quality stainless steel butt hinges. Specifications Butt hinge with 2 ball bearings Stainless steel AISI 304 Square corners Can be used on doors up to 120 kg Features CE marked Tested to EN1935:2002 class 13 Suitable for fire and smoke resistant doors, tested to EN1634-1:2014

2015年10月28日 · About this item Pack of 12 ball bearing steel hinges Corners: 1/4" Radius Size: 3-1/2" X 3-1/2" - Thickness: 2.2mm Pin: Removable - Knuckles: 5 For Interior Residential Use - Matching Screws are included

2BB Butt Hinges ANSI A8112 Hinges with UL R27486 Certificate for North America Markets. Made of Stainless Steel Grade 304, With Solid Axis Pin in Ø15mm. Height 4.5″, Optional Width 4.0'' abd 4.5'', Thickness 3.0mm, 3.4mm, and 4.6mm. OEM/ODM Services are Acceptable!

Brace your doors and windows with long-lasting stainless steel 2bb hinges. stainless steel 2bb hinges are flexible pivoted joints that support the doors and windows. They facilitate the proper swinging movement of the doors and windows. However, most hinges permit rotation in a single direction about the central axis.

2BB EN Hinge EN1935:2002 Grade 13 & EN1634.1:2003 For wooden or metal frames Hole shape: Template Pin Type: fixed pin, loose pin, loos non-rising pin, non remoable pin Material: SUS304, SUS316 Finish: Satin/Polish/PVD, etc. Swaging:standard W1= 2.5~3.0mm, Optional W1=1.6~2.0mm

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