• COSMOIND’s quality system complies with ISO 9001, 14001.
  • COSMOIND’s EF fittings are manufactured in accordance with domestic standard(KS M 3408-3, KS M ISO 8085-3) and foreign standard(ISO 4437-3, EN 1555-3)
  • COSMOIND’s quality system complies with ISO 9001, 14001.
  • COSMOIND’s EF fittings are manufactured in accordance with domestic standard(KS M 3408-3, KS M ISO 8085-3) and foreign standard(ISO 4437-3, EN 1555-3)

Equal & Unequal Tee 

Unit : mm

ISO[d] (mm)
ASTM[inch]
L(mm)
L1(mm)
ISO[d] (mm)
ASTM[inch]
L(mm)
L1(mm)
[d] (mm)
[D] (mm)
[d]
[D]
[d] (mm)
[D] (mm)
[d]
[D]
20
20
1/2" IPS
1/2" IPS
137
52
90
63
3″ IPS 
2" IPS
218
82
25
25
3/4" IPS
3/4" IPS
137
52
90
50
3″ IPS 
1 1/2" IPS
218
72
25
20
3/4" IPS
1/2" IPS
137
52
90
40
3″ IPS 
1 1/4" IPS
218
72
32
32
1" IPS
1" IPS
137
52
90
32
3″ IPS 
1" IPS
218
67
32
25
1" IPS
3/4" IPS
137
52
90
25
3″ IPS 
3/4" IPS
218
59
32
20
1" IPS
1/2" IPS
137
52
90
20
3″ IPS 
1/2" IPS
218
56
40
40
1 1/4" IPS
1 1/4" IPS
141
55
110
110
4″ IPS 
4″ IPS 
264
98
40
32
1 1/4" IPS
1" IPS
141
55
110
90
4″ IPS 
3″ IPS 
264
98
40
25
1 1/4" IPS
3/4" IPS
141
55
110
75
4″ IPS 
2 1/2" IPS
264
96
40
20
1 1/4" IPS
1/2" IPS
141
55
110
63
4″ IPS 
2" IPS
264
91
50
50
1 1/2" IPS
1 1/2" IPS
153
70
110
50
4″ IPS 
1 1/2" IPS
264
90
50
40
1 1/2" IPS
1 1/4" IPS
153
70
110
40
4″ IPS 
1 1/4" IPS
264
90
50
32
1 1/2" IPS
1" IPS
153
70
110
32
4″ IPS 
1" IPS
264
60
50
25
1 1/2" IPS
3/4" IPS
153
67
110
25
4″ IPS 
3/4" IPS
264
60
50
20
1 1/2" IPS
1/2" IPS
153
67
110
20
4″ IPS 
1/2" IPS
264
60
63
63
2" IPS
2" IPS
168
80
160
160
6″ IPS 
6″ IPS 
380
136
63
50
2" IPS
1 1/2" IPS
168
72
160
110
6″ IPS 
4″ IPS 
380
105
63
40
2" IPS
1 1/4" IPS
168
75
160
90
6″ IPS 
3″ IPS 
380
100
63
32
2" IPS
1" IPS
168
70
160
75
6″ IPS 
2 1/2" IPS
380
92
63
25
2" IPS
3/4" IPS
168
63
160
63
6″ IPS 
2" IPS
380
87
63
20
2" IPS
1/2" IPS
168
62
160
50
6″ IPS 
1 1/2" IPS
380
83
75
75
2 1/2" IPS
2 1/2" IPS
193
82
160
40
6″ IPS 
1 1/4" IPS
 
 
75
63
2 1/2" IPS
2" IPS
193
78
225
225
8″ IPS 
8″ IPS 
427
136
75
50
2 1/2" IPS
1 1/2" IPS
193
76
225
160
8″ IPS 
6″ IPS 
427
129
75
40
2 1/2" IPS
1 1/4" IPS
193
73
225
110
8″ IPS 
4″ IPS 
427
106
75
32
2 1/2" IPS
1" IPS
193
70
225
90
8″ IPS 
3″ IPS 
427
103
90
90
3" IPS
3" IPS
218
98
225
75
8″ IPS 
2 1/2" IPS
427
92
90
75
3" IPS
2 1/2" IPS
218
86
225
63
8″ IPS
2" IPS
427
87

※PE 80, PE100, SDR 11
※ASTM size is the nominal outer diameter corresponding to ISO
※For ASTM size, please contact us.
※The Above size can be changed in order to improve product quality.
※For standards other than the above, please contact us.

Polyethylene
& advantages

Stability and Hygiene

As the PE material is widely used globally because of its proven stability and hygiene. Especially, PE water pipe has the optimum condition for drinking water. 

Joint characteristics 

PE pipes are easy to be arranged quickly and perfectly by using various fusion method according to field condition. 

Flexibility

By superior flexibility and resilience, it has less constraint by land conditions, easy to construct, relatively safe in internal or external factors, and restorable by itself. 

Easy installation 

A variety of fittings for PE PIPE can be easy to weld even unskilled workers by using simple welding equipment. 

Corrosion Resistance 

PE pipes do not cause erosion or corrosion. 

Light weight 

PE pipe that is lighter than iron pipe is easy to carry and quickly to construction. 

Cold-weather resistance

Since the Polyethylene has excellent elasticity between molecules, it can maintain inherent durability even with a temperature change of 40ºC 


Chemical resistance 

Polyethylene is not corrosive to additives, alkalis, salts, etc. and does not multiply seaweed or bacteria, so it is safe from various corrosive substance. 

Flow characteristics 

The smooth inner surface of PE water pipes allows more amounts of fluid transportation than other material’s pipes with the same diameter. 

Abrasion Resistance 

PE pipe is also suitable for transfer piping in slurry and dredging pipeline in the mine by the superior abrasion resistance of PE. 

Impact Resistance 

PE pipes has superior resistance from external shocks in order to prevent water leak by damage on a pipe from an earthquake or land subsidence. 

Economical Efficiency 

Polyethylene’s material cost is more cheaper and it has lower maintenance cost than other pipe material.