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一、 抗疲勞系數(shù)(軸向往復1000次｝;>0.85注:長度縮短20%

二、 拉伸強度(MPa)內(nèi)外膠平均A2.5

三、 熱空氣老化拉変率，內(nèi)外±25% (100Cx48h)扯變率內(nèi)外±15%

四、 耐酸系數(shù)10%H2SO4X168h室溫20.7

五、 耐堿系數(shù)10%NaOHx168h室溫>0.7

六、 扯斷伸長率(％) >450

1. Anti-fatigue coefficient (1000 axial reciprocating times); > 0.85 Note: Length shortened by 20%.

2. Tensile Strength (MPa) Average of Inside and Outside Adhesives (> 12.5)

3. Tensile strain rate of hot air aging, internal and external (+25%) (100Cx48h) and internal and external (+15%).

4. Acid resistance coefficient 10% H2SO4X168h room temperature (> 0.7)

5. Alkali Resistance Coefficient 10% NaOHx168h Room Temperature (> 0.7)

6. elongation at break (%) greater than 450

請選擇正確的法蘭

Please choose the right flange

A. 采用正確的配套法蘭防止損壞橡膠密封封面

B. 正確采用的焊頸法蘭防止損壞橡膠密封面

C. 釆用大口內(nèi)徑平焊法蘭時應(yīng)安裝一個小口徑金屬墊片可以防止損壞橡膠

D. 法蘭不能與橡膠密封面完全密封，沖洗橡膠

E. 不平衡端管對橡膠密封面造成損壞

F. 法蘭內(nèi)邊緣損壞橡膠密封面

A. Uses the correct supporting flange to prevent damage to the rubber seal cover

B. Correctly use welding neck flange to prevent damage to rubber seal surface

C. Big diameter flange should be installed on a small caliber metal gasket to prevent damage of rubber

D. Flange can not be completely sealed with rubber seal surface, rinse rubber

E. Uneven pipe end damage to rubber sealing surface

F. Damage of rubber sealing surface at the inner edge of flange