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Fluoropolymer Lined Metal Pipe and Fittings
The ChemTite® Ethylene™ brand was the first to employ PTFE isostatic molding processes and the first to process pure unmodified PTFE for its lined products. Today ChemTite® Ethylene™ processes fluoropolymers in more ways than any other competing brand. Processes include dry & wet isostatic molding, paste extrusion, ram extrusion, rotolining, injection molding, intrusion molding, melt extrusion, resin transfer molding, compression molding and vacuum forming.
Product Features & Benefits
- PURE PTFE – NO VOC’S ADDED: Ethylene utilizes only 100% pure virgin, high molecular weight PTFE resin in its manufacturing processes. NO pigments or solvent lubricants whatsoever are added to our PTFE liners.
- HEAVY-WALLED FLUOROPOLYMERS: Pipe sections are lined with a heavy-walled isostatically molded PTFEliners exceeding the requirements of ASTM F1545. Liner thickness ranges from .130” for 1” pipe to .425” for 12” diameter piping.
- THE CHEMTITE® DIFFERENCE: The ChemTite® Ethylene brand focuses on the complete lined pipe assembly: PTFE liner and the steel housing. Without question, steel piping is a critical component of the piping assembly, it is the pressure retaining vessel. The PTFE liners’ only purpose is to protect the steel piping from being attacked by the fluid media.
- “SEAMLESS” STEEL HOUSING: The ChemTite® Ethylene’s Lined Steel Pipe seamless tube is extruded and drawn from a billet while welded tubes are produced from a strip that is roll formed and welded to produce a tube. A welded tube is considerably less expensive than seamless, but it is severely compromised. ChemTite® line steel piping employs “seamless” Schedule 40 steel or stainless pipe in sizes 1” to 8”, Schedule 30 in 10”, and Schedule 20 in 12” conforming to ASTM A53 grade B or ASTM A312.
- FORGED STEEL FLANGES: Forged steel flanges offer better impact resistance and are less brittle than ductile iron flanges. All ChemTite® rotating flanges on pipe and fittings come standard as forged steel ASTM A105 which offer higher pressure ratings, better ultimate tensile and elongation compared to ductile iron.
- VARIOUS LINED PIPE FITTINGS: Dimensions and specs can be found on the ChemTite® Lined Piping Brochure.
- 90° Elbow
- Reducing Tee
- Short Stack Tee
- Eccentric Reducer
- 2" Branch Tee
- Straight Reducing Flange
- 45° Elbow
- Cross
- Short Stack Cross
- 1" Brand Tee
- Blind Flange
- Tapered Reducing Flange
- Tee
- Lateral
- Concentric Reducer
- 1.5" Branch Tee
- Spectacle Blind Flange
- LININGS AVAILABLE: PTFE, PFA, ETFE, PVDF, Nylon. Service conditions may limit the lining selection.
Technical Details
Liner Material Properties
Check the Chemtite® PTFE Lined Pipe Fitting Brochure for Complete Details
| Liner Properties | Test Method | PTFE |
| Service Temperature | - | (-)20 to 450 °F |
| Min. Tensile Strength at Break (psi) | ASTM D386 | 3000 |
| Min. Elongation at Break (%) | ASTM D638 | 250 |
| Izod Impact Strength @ - 40°F | ASTM D256 | 1.5 |
| Izod Impact Strength @ - 75°F | ASTM D256 | 3 |
| Hardness Durometer (Shore D) | ASTM D2240 | 55 |
| Thermal Conductivity (Btu-in/h-ft²-°F | ASTM E1530 | 1.7 |
| Dielectric Strength (V/mil) | ASTM D149 | 600 |
| Surface Resistivity (Ω-sq.) | ASTM D257 | >1018 |
| Water Absorption (%) | ASTM D570 | <0.01 |
| Specific Gravity | - | 2.14-2.19 |
| Static Coefficient of Friction | - | 0.05 |
| Liner Color | - | White |
| Liner Identification Band | - | Black with White Lettering |
*Optional Liners Available: PFA, PVDF, ETFE, Polypropylene or Polyethylene
Carbon / Stainless Steel
PIPE
- CARBON STEEL: ASTM A53 Gr. B Seamless or ASTM A106 STAINLESS STEEL: ASTM A312
- 1" - 8" : Schedule 40/40S
- 10" : Schedule 30
- 12" : Schedule 20
FITTINGS
- Fabricated Carbon Steel: ASTM A53, ASTM 513, ASTM A516 or ASTM A234 per ASME B16.9 Cast fittings: ASTM A395 Cast Ductile Iron or ASTM A216 Gr. WCB Cast Steel
- Fabricated Stainless Steel: ASTM A312, ASTM A240 or ASTM A403 Gr. WPS per ASME B16.9
FLANGES
- ROTATING LAP JOINT OR FIXED SLIP-ON:
- ASTM A105 Forged Carbon Steel per ASME B16.5,
- ASTM A182 Forged Stainless Steel per ASME B16.5
- FIXED THREADED
- ASTM A395 Cast Ductile Iron per ASME B16.42
- ASTM A182 Forged Stainless Steel per ASME B16.5
TESTING
- All qualifications per ASTM F1545 are conducted on representative samples including:
- Steam-cold water cycle product qualification testing
- High temperature product qualification testing
- Low temperature product qualification testing
- Vacuum product qualification testing
- All products are spark tested at 15 kV or hydrostatically tested at 1.5X design pressure prior to shipment
Size Range
Nominal Pipe Dimensions & PTFE Liner Thickness
| Nominal Pipe Size (in.) | Nominal Outside Dia. (in.) | Nominal Wall Thickness | Nominal PTFE Liner Thickness (in) | ||
| Sch. 40 | Sch. 30 | Sch. 20 | |||
| 1 | 1.315 | 0.133 | - | - | 0.13 |
| 1/1/02 | 1.9 | 0.145 | - | - | 0.15 |
| 2 | 2.375 | 0.154 | - | - | 0.16 |
| 3 | 3.5 | 0.216 | - | - | 0.16 |
| 4 | 4.5 | 0.237 | - | - | 0.18 |
| 6 | 6.625 | 0.28 | - | - | 0.28 |
| 8 | 8.625 | 0.322 | - | - | 0.31 |
| 10 | 10.75 | - | 0.307 | - | 0.35 |
| 12 | 12.75 | - | - | 0.25 | 0.425 |
*Consult Factory for Sizes 14”-42”
Nominal Flange Dimensions (in)
| CL150 | |||||
| Nominal Pipe Size | Flange OD | Min Flange Thickness | Bolt Circle | No Bolt | Bolt Hole Dia. |
| Dia. | Holes | ||||
| 1 | 4 1/4 | 1/2 | 3 1/8 | 4 | 5/8 |
| 1/1/02 | 5 | 5/8 | 3 7/8 | 4 | 5/8 |
| 2 | 6 | 11/16 | 4 3/4 | 4 | 3/4 |
| 3 | 7 1/2 | 7/8 | 6 | 4 | 3/4 |
| 4 | 9 | 7/8 | 7 1/2 | 8 | 3/4 |
| 6 | 11 | 15/16 | 9 1/2 | 8 | 7/8 |
| 8 | 13 1/2 | 1 1/16 | 11 3/4 | 8 | 7/8 |
| 10 | 16 | 1 1/8 | 14 1/4 | 12 | 1 |
| 12 | 19 | 1 3/16 | 17 | 12 | 1 |
Pressure Ratings
| Maximum Pressure & Vacuum Ratings | ||
| Temperature | CL150 | Vacuum |
| 100 °F | 285 psig | Full |
| 150 °F | 285 psig | Full |
| 200 °F | 260 psig | Full |
| 300 °F | 230 psig | Full |
| 400 °F | 200 psig | Full |
| 450 °F | 200 psig | Full |
Pressure and Vacuum Ratings: Pressure / temperature ratings of ChemTite® PTFE lined pipe and fittings are based on the industry standard published ratings for flanges by material grade. In general, ChemTite® PTFE lined pipe and fitting are fully vacuum rated up to 450°F. *CL300 option available. Consult Factory.
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