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Qingdao Winton Industrial Glass Co., Ltd.

No.216,Changjiang Middle Road,Qingdao Development Area, Shandong Province,China,Qingdao,Shandong,China

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Winton High quality glass level gauge

China

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Product Specification

Material : Borosilicate glass Thickness : 17mm Winth : 30mm,34mm Length : 115-340mm Working pressure : 4-8MPa Working Temperature : 260â

Product Description

Product Description
Size
 1) Three tendons (four grooves)
340 x 34(30) x 17mm; 320 x 34(30) x 17mm; 280 x 34(30) x 17mm;
250 x 34(30) x 17mm; 218 x 34(30) x 17mm; 190 x 34(30) x 17mm;
165 x 34(30) x 17mm; 140 x 34(30) x 17mm; 115 x 34(30) x 17mm;
  The other size is optional or according to the requirements of customers.
  Working temperature: 260 °C, Working pressure: 4.0MPa.
  2) Two tendons (three grooves)
340 x 34 x 17mm; 320 x 34 x 17mm; 280 x 34 x 17mm;
250 x 34 x 17mm; 218 x 34 x 17mm; 190 x 34 x 17mm;
165 x 34 x 17mm; 140 x 34 x 17mm; 115 x 34 x 17mm;
  The other size is optional or according to the requirements of customers.
  Working temperature: 260°C, Working pressure: 4.4MPa.
 
Material 
Borosilicate glass
 
Main Composition 
SiO2     B2O3     Na2O+K2O     Al2O3 
  81          13               4                    2 
 
Chemical Property
Hydrolytic resistance at98°      CISO719-HGB 1 
Hydrolytic resistance at121°     CISO720-HGA 1 
Acid resistance ClassI           SO1776-First Class
 
Usage      
It is used in lever gauge in boiler for water position.
 
   
Physical Property     
Level Gauge Glass Physical Property
Testing Item Standard Rules
1. Appearance 1) Air bubble:
Diameter≤0.5mm,in the 10mm x 10mm area the quantity must be ≤3.
Diameter from 0.5mm to 1.5mm dispersive air bubble,there is less 2 on the sight plane and less 5 on the No-sight plane. Their distance must be 40mm.
The air bubble of Diameter from 1.5mm to 2mm ≤3  on the No-sight plane. Their distance must 40mm.
On the sight plane, The distance to the side in 7.5mm,the air bubble of the  diameter1mm mustnt be more 2.
2) The glass dont allow slag and scrap iron,etc. impurity.
3) Stripe : dont allow have palpable filaceous and pectinate stripe on the sight plane.
4) Cockle: In the side face,dont allow have the cockle of depth 1mm.
5) Crack: dont allow have crack.
6) Scrape: On the sight plane and in the 7.5mm to edge,the scrape of less than 10mm dont allow more 2 strips.
7) The sight plane must be polishing,and sealing side must be rubbing and polishing.
2. Colour and Lustre It should be no color and transparent,and with its self tine green is allowed.
3. Water-resistance Cooked in the water for 5 hours,then weigh up ,then titration with 25ml    0~31    ug/g
4. Alkali-resistance Cooked in the 0.5N NaoH for 3 hours,then Weigh up,weightlessness should be ≤75  mg/dm2
5. Temperature-resistance impacts capability Put it into electric cooker,keep for 7min under the temperature of 260±1,then,put into the water of 20±1,it should not crack
6. Bend-resistance ≥80 MPa
 
 

Contact Us

Contact Person : Ren

Company:Qingdao Winton Industrial Glass Co., Ltd.

Address:No.216,Changjiang Middle Road,Qingdao Development Area, Shandong Province,China, Qingdao, Shandong, China,266555

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