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Wholesale ilmadur gauge glass in Qingdao
Time:2017-10-23 Hits:6122

Wholesale ilmadur gauge glass in Qingdao

Place of Origin:Shandong, China (Mainland)

Brand Name:winton

Model Number:A1-9,B1-9

Material:Borosilicate glass

Thickness:17mm

Length:115-340mm

Winth:30mm,34mm

Working Temperature:260

Working pressure:4-8MPa

Tempered or not:Tempered

Category:Transparent

Packaging:Carton

Usage:It is used in lever gauge in boiler

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.

3)Transparent plane

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: 8.0MPa.

Material 

Borosilicate glass

Main Composition 

1.SiO2: 80±0.5%

2.B2O2: 13±0.2%

3.Al2O3: 2.4±0.2%

4.Na2O (+K2O): 4.3±0.2% 

 

Chemical Property

1.Hydrolytic resistance       ISO719-HGB 1 Class

2.Alkali resistance              ISO695-HGB 2 Class

3.Acid resistance               ISO195-HGB 1 Class

 

Usage      

It is used in lever gauge in boiler for water position.

 

Product Category

1.Gauge glass mostly divide into these series:

Clear gauge glass 

Reflext gauge glass

  1) Three tendons (four grooves)
  2) Two tendons (three grooves)

2.It is also named:  

   Reflex Gauge Glass,   Sight glass,   Reflex Glasses

   Reflex sight glass,     Spares For level Gauge.

   

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

 

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