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GQD系列高强石墨垫片
材质结构及特点：
GQD型系列垫片是将不锈钢板（或其它金属板材）与高碳石墨（含碳量99%以上）经特殊加工后，利用物理和化学两种方法将它们有机的结合在一起，制成的一种具有钢材强度的新型密封材料。该种材料具有良好的可塑性和填充性，对密封面的精度要求不高，安装预紧力小，耐高低温，耐腐蚀，耐辐照，是石油、化工、化肥、化纤、热电等工业管道、阀门、压力容器法兰连接处首选的理想密封材料。
流体介质：
水、饱和蒸汽、过热蒸汽、油品、油气、酸、碱、有机溶剂、化合物、混合物、催化剂等。
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GQD HIGH STRENGTH GRAPHITE PECKING PIECE WITH INSIDE AND OUTSIDE EDGE WRAPPED
Composition and characteristics:
GQD high strength graphite pecking piece is a new steel strength steeling which is specially made of stainless steel plate(or other metals plate)and High-carbon graphite(carbon content above 99%)in physicaol and chemical way.By the good characters of well plasticity,requiring low precision of sealing face,small pre-tightening force,high or low temperature resistance,corrosion resistance,
irradiation proof,this materials
are used to seal flange connection
of pipe,valve and pressure vessel in
petroleum,chemical industry,chemical fibre,chemical fertilizer,heat power industry etc.
FLUID MEDIUM
Water,saturated steam,overheated steam,oil,oil gas,acid,alkali,organic solvent,mixture,compound,catalyst,etc. |
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适用范围：Service Range |
型号 NO |
增强复
合材料
Reinforced
Inserted
Material
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结构图示
Construc
tion
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耐压
(N/mm2)
Stability under
Compress
ive Stress
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温度
Temperature(
℃) |
压缩率%
ASTMF
36A-66
Compress
ibility
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回弹率%
ASTMF
36A-66
Recovery |
气体渗透率
cm3/min
DN3535
Gas
Permeability
(Thickness
1.5mm)
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密封性能
(F-37B)
Sealability
(厚度Thickness 1.5mm) |
密封性
ASTM
Sealing
Constants
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氧化性
介质下
In oxidizin
g Media
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非氧化性
介质下
In Non
oxidizing
Media
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氮气
ml/hrN2 |
燃料油
Aml/hr
Buming
oil A
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垫片系数
"m"factor |
预紧
比压
"y"stre
sspsi
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GQD-I |
镀锡冲刺
钢板
Tanged
Carbon
steel Sheet
(厚度 Thickness 0.20~0.25mm)
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≥ 48 |
-10-450 |
-10-500 |
30-35 |
15-20 |
≤0.8 |
30 |
<0.5 |
3.0 |
9000 |
GQD-II |
SS304,316
等冲刺
不锈钢板
AISI304,316,
etc.
T1anged
stainless steel
sheet (厚度Thickness 0.1mm) |
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≥ 48 |
-240-450 |
-200~
560
(ss304)
-200-
870
(ss316)
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30-40 |
15-30 |
≤0.8 |
60 |
<0.5 |
2.5 |
4000 |
GQD-III |
SS304,316
等不锈钢板
AISI304,316,
etc.
T1anged stainless
steel sheet
(厚度
Thickness 0.05,0.1mm) |
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≥45 |
-240-450 |
-200~
560
(ss304)
-200-
870
(ss316)
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40-50 |
10-15 |
≤0.4 |
35 |
<0.5 |
2.0 |
900 |
GQD-IV |
SS304,316
等
不锈钢丝
网，AISI304,316,
etc,
stainless
steel mesh |
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≥40 |
-240-450 |
-200~
560
(ss304)
-200-
870
(ss316) |
30-35 |
15-20 |
≤1.0 |
7000 |
58 |
3.0 |
5000 |
GQD-v |
高强塑料
薄膜等
Mylar Reinforced
(厚度 Thickness 0.05mm) |
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≥ 40 |
-240-450 |
-200-
1650
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40-50 |
10-15 |
≤0.4 |
65 |
<0.2 |
2.0 |
900 |
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