Product Description:  

A. Material: plastic POM; Zinc alloy; cold-rolled steel Q235; PA66; spring 65Mn

B. Finish: plated (brass + nickel + sealing), polish, heat treatment

C. Different colors meet your requirements

Features: 

A. Upward opening to 35°, free stop at any position you want.

B. Adjustment according to the door weight is achieved to get a better function.

Product Advantages: 

A. Appearance Patent No.: (ZL 2003 3010 1764.2)

B. Using wheel gear inside to avoid skiding, free stop at any position you want.

C. Having a good stability, opening for a labor-saving, closing without noise.

D. YS311 passed 50,000 cycles durability test which is far beyond the CNS requirements of hinge 40,000 times.

Product Parameter: 

A. Door height:300-500 mm

B. Door weight:3-5KG

Others (Packing and Services):                                    

Package: 25pcs/inner box, 100pcs/box,

N.W/G.W: 22kgs/25.65kgs,

MEAS: 32cm * 27.5cm * 23cm,                            

Delivery Date: Normally in one month,        

Samples Preparation: samples can be sent in 3 working days (DHL 3-5days, UPS3-5days, Fedex/TNT 3-5days, EMS 7days reach destination)

Ps:

Difference between YS309, YS310, YS311 flay stay:

(1) different design

(2) Internal structure:

YS309 flap stay---friction clutch inside

YS310 flap stay---steel ball and cam construction inside

YS311 flap stay---wheel gear inside