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Lined Pipe Products
Lined Pipe Product Manufacturer.
Lined Pipe
Lined Elbow
Lined Tee
Lined Equal Cross
Lined Reducer
Lined Y Type Strainer
Lined Reducing Flange

Lined Pipe and Fittings

UNPPolyvalves, specializes in the production of robust and corrosion-resistant lined pipe and fittings. Crafted with precision, UNP’s lined pipes boast a resilient PTFE liner, with the option to upgrade to Dyneon TFM for enhanced performance. Fabricated from premium carbon or stainless steel, each pipe is meticulously constructed with diameter ranges from 1/2 inch up to 20 inches.  UNP’s product line includes a variety of ANSI class 150, 300, and DIN flange dimensions, offering flexibility to suit diverse industrial needs. Additionally, explore our range of optional features such as specialized coatings and extended vent holes for tailored solutions. 

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Key Features

Heat Resistant

Corrosion Resistant

Carbon or Stainless Steel

ASTM Certified

Pipe Fittings

View the UNP Pipe and Fittings Product Brochure for more specifications, material compositions, and testing data. 

Product Brochure

Available Lining Material

  • PTFE
  • PVDF
  • PPH
  • HDPE
  • TFM

Pipe Material of Construction

  • Stainless Steel
  • Carbon Steel

Pipe Spool

90 Degree Elbow

45 Degree Elbow

Equal Tee

Material Specs
  1. Pipe: Seamless Carbon Steel – As per ASTM A 106 GR.B, SCH 20 (up to 6″ and Above 6″)
  2. Flange: A105 -150#
  3. Lining: PTFE Conforming ASTM D4895
Material Specs
  1. 90°: Seamless Carbon Steel – ASTM A 234 GR. WPB, SCH 40 (up to 6″) / SCH 20 (Above 6″)
  2. Flange: ASTM A 105 – As per ASME B 16.5, 150#
  3. Lining: PTFE Conforming ASTM D4895
Material Specs
  1. 45° Bend: Seamless Carbon Steel – ASTM A 234 GR. WPB, SCH 40 (up to 6″) / SCH 20 (Above 6″)
  2. Flange: ASTM A 105 – As per ASME B 16.5, 150#
  3. Lining: PTFE Conforming ASTM D4895
Material Specs
  1. Eq. Tee: Seamless Carbon Steel – As per ASTM A 106 GR. B, SCH 40 (up to 6″) / SCH 20 (Above 6″)
  2. Flange: ASTM A 105 – As per ASME B 16.5, 150#
  3. Lining: PTFE Conforming ASTM D3307

Equal Cross

Reducer Fitting

Unequal Tee

Reducing Flanges

Material Specs
  1. Pipe: Seamless Carbon Steel – As per ASTM A 106 GR.B, SCH 20 (up to 6″ and Above 6″)
  2. Flange: A105 -150#
  3. Lining: PTFE Conforming ASTM D4895
Material Specs
  1. Reducer: Seamless Carbon Steel – ASTM A 216 GR.WCB
  2. Flange: As per ASME B 16.5, 150#
  3. Lining: PTFE Conforming ASTM D3307
Material Specs
  1. Un. Eq. Tee: Seamless Carbon Steel – ASTM A 106 GR.B, SCH 40 (up to 6″) / SCH 20 (Above 6″)
  2. Flange: ASTM A 105 – As per ASME B 16.5, 150#
  3. Lining: PTFE Conforming ASTM D3307
Material Specs
  1. Reducing Flange: IS 2062
  2. Flange: As per ASME B 16.5, 150#
  3. Lining: PFA Conforming ASTM D3307

Pipe Specifications

Use the chart below to find UNP pipe specifications and dimensions. 

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Size
L – ID (Ød)
ØR / F (ØB)
F. OD (ØD)
F. THK (G)
Stub End (T)
P.C.D. (K)
H – DIA (Øe)
NH (n)
Lining THK (S)
C. S. Pipe (SCH)
INCH
MM
INCH
MM
INCH
MM
INCH
MM
INCH
MM
INCH
MM
INCH
MM
INCH
MM
0.079
±2
0.079
±2
0.06
±1.6
1/2″
0.39
10
1.37
34.9
3.50
88.9
0.44
11.1
0.35
8.9
2.37
60.3
0.63
15.9
04
0.126
3.2
40
3/4″
0.59
15
1.68
42.7
3.87
98.4
0.50
12.7
0.40
10.2
2.75
69.8
0.63
15.9
04
0.126
3.2
40
1″
0.79
20
2.01
51
4.25
108
0.56
14.2
0.45
11.4
3.13
79.4
0.63
15.9
04
0.126
3.2
40
1.5″
1.34
34
2.87
73
5.00
127
0.69
17.5
0.55
14
3.87
98.4
0.63
15.9
04
0.126
3.2
40
2″
1.73
44
3.62
92
6.00
152.4
0.75
19
0.60
15.2
4.75
120.6
0.75
19
04
0.138
3.5
40
3″
2.76
70
5.00
127
7.50
190.5
0.94
23.8
0.75
19.0
6.00
152.4
0.75
19
04
0.157
4
40
4″
3.70
94
6.18
157
9.00
228.6
0.94
23.8
0.75
19.0
7.50
190.5
0.75
19
08
0.177
4.5
40
6″
5.67
144
8.50
216
11.00
279.4
1.00
25.4
0.80
20.3
9.50
241.3
0.87
22.2
08
0.217
5.5
40
8″
7.64
194
10.63
270
13.50
342.9
1.13
28.6
0.90
22.9
11.75
298.4
0.87
22.2
08
0.217
5.5
20
10″
9.72
247
12.76
324
16.00
406.4
1.19
30.2
0.95
24.2
14.25
362
1.00
25.4
12
0.256
6.5
20
12″
11.73
298
15.00
381
19.00
482.6
1.25
31.8
1.00
25.4
17.00
431.8
1.00
25.4
12
0.256
6.5
20
14″
12.83
326
13.26
413
21.00
533.4
1.37
34.9
1.10
27.9
18.75
476.3
1.13
28.6
12
0.256
6.5
20
16″
14.84
377
18.50
470
23.50
596.9
1.44
36.5
1.15
29.2
21.25
539.8
1.13
28.6
16
0.256
6.5
20
18″
16.85
428
21.00
533.4
25.00
635
1.56
39.7
1.25
31.8
22.75
577.9
1.25
31.8
16
0.256
6.5
20
20″
18.70
475
23.00
584.2
27.50
698.5
1.69
42.9
1.35
34.3
25.00
635
1.26
32
20
0.256
6.5
20

TFM Dyneon Liner Features

*Upgradeable Option

  • Lower Deformation Under Load – Compared to conventional PTFE, Dyneon TFM maintains its shape and integrity when subjected to substantially higher pressures.
  • Denser Polymer Structure –  Dyneon TFM has fewer voids resulting in lower permeability compared to PTFE. This makes it more resistant to the passage of gasses or liquids through its surface.
  • Improved Stress Recovery – Dyneon TFM recovers from stress more efficiently, especially at elevated temperatures, therefore it maintains its sealing properties for longer resulting in longer lasting pipe and less maintenance.

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