EF Equal & Unequal Tee


  • 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[d]
L(mm)
L1(mm)
ISO[d] (mm)
ASTM[d]
L(mm)
L1(mm)
[d] (mm)
[D] (mm)
[d]
[D]
[d] (mm)
[D] (mm)
[d]
[D]
20
20
½ห IPS
½ห IPS
105
54
110
20
4ห IPS
½ห IPS
264
60
25
25
¾ห IPS
¾ห IPS
107
57
110
25
4ห IPS
¾ห IPS
264
60
32
20
1ห IPS
½ห IPS
126
60
110
32
4ห IPS
1ห IPS
264
60
32
25
1ห IPS
¾ห IPS
126
60
110
40
4ห IPS
1¼ห IPS
264
90
32
32
1ห IPS
1ห IPS
126
60
110
50
4ห IPS
1½ห IPS
264
90
40
20
1¼ห IPS
½ห IPS
141
56
110
63
4ห IPS
2ห IPS
264
91
40
25
1¼ห IPS
¾ห IPS
141
56
110
75
4ห IPS
2½ห IPS
264
95
40
32
1¼ห IPS
1ห IPS
141
59
110
90
4ห IPS
3ห IPS
264
97
40
40
1¼ห IPS
1¼ห IPS
141
62
110
110
4ห IPS
4ห IPS
264
99
50
20
1½ห IPS
½ห IPS
155
57
125
50
-
1½ห IPS
286
65
50
25
1½ห IPS
¾ห IPS
155
57
125
63
-
2ห IPS
286
70
50
32
1½ห IPS
1ห IPS
155
67
125
90
-
3ห IPS
286
85
50
40
1½ห IPS
1¼ห IPS
155
67
125
110
-
4ห IPS
286
105
50
50
1½ห IPS
1½ห IPS
155
75
125
125
-
-
286
105
63
20
2ห IPS
½ห IPS
177
57
140
50
5ห IPS
1½ห IPS
320
65
63
25
2ห IPS
¾ห IPS
177
57
140
63
5ห IPS
2ห IPS
320
70
63
32
2ห IPS
1ห IPS
177
69
140
90
5ห IPS
3ห IPS
320
85
63
40
2ห IPS
1¼ห IPS
177
72
140
110
5ห IPS
4ห IPS
320
105
63
50
2ห IPS
1½ห IPS
177
80
140
140
5ห IPS
5ห IPS
320
122
63
63
2ห IPS
2ห IPS
177
87
160
50
6ห IPS
1½ห IPS
385
83
75
32
2½ห IPS
1ห IPS
193
64
160
63
6ห IPS
2ห IPS
385
90
75
40
2½ห IPS
1¼ห IPS
193
68
160
75
6ห IPS
2½ห IPS
385
102
75
50
2½ห IPS
1½ห IPS
193
74
160
90
6ห IPS
3ห IPS
385
106
75
63
2½ห IPS
2ห IPS
193
82
160
110
6ห IPS
4ห IPS
385
110
75
75
2½ห IPS
2½ห IPS
193
92
160
160
6ห IPS
6ห IPS
385
128
90
32
3ห IPS
1ห IPS
212
66
225
63
8ห IPS
2ห IPS
433
91
90
40
3ห IPS
1¼ห IPS
212
71
225
75
8ห IPS
2½ห IPS
433
95
90
50
3ห IPS
1½ห IPS
212
79
225
90
8ห IPS
3ห IPS
433
106
90
63
3ห IPS
2ห IPS
212
86
225
110
8ห IPS
4ห IPS
433
110
90
75
3ห IPS
2½ห IPS
212
92
225
160
8ห IPS
6ห IPS
433
137
90
90
3ห IPS
3ห IPS
212
105
225
225
8ห IPS
8ห IPS
433
143

โ€ปPE 80, PE100, SDR 11
โ€ปASTM size is the nominal outer diameter corresponding to ISO
โ€ปFor ASTM size, please contact us.
โ€ปThe Above size can be changed in order to improve product quality.
โ€ปFor 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.