Encapsulation Line Tubes

Encapsulated Line Tubes for chemical injection

Control lines and chemical injection lines in austenitic stainless steel and duplex stainless steel. Baosheng’s range includes control lines and chemical injection lines in seamless or welded condition.

Baosheng’s service center is located in Changzhou, China(about 60 minutes from Shanghai by bullet train) holds extensive seamless coiled tube and laser welded tube stocks for control lines and chemical injection lines to ensure just-in-time deliveries. Baosheng also operates a complete package of additional services:

  • Cut to length
  • Hydrotesting
  • Paint striping
  • Encapsulation
  • Flush and fill (acc. to Nas Class 8)
  • Level wound on reels
  • Customer specified packaging
  • Direct delivery to site

Packing standards

  • Coils wound on wooden spools
  • Coils wound on customer-specific metal reels
  • Full package marking service, customer specific

  • Description
  • Detailed Information
  • Encapsulation materials
  • Inquiry

Seamless control lines and chemical injection lines

The tables show materials, sizes and approvals for control lines and chemical injection lines in seamless condition.

Grade UNS C max. Cr Ni Mo N Others
Materials* (including nominal chemical composition)
TP 316L S31600/S31603 0.030 17.5 13 2.1
Alloy 825 N08825 0.030 20 38.5 2.6 Cu=1.7, Ti=0.7
28 N08028 0.020 27 31 3.5 Cu=1.0
2205 S31803/S32205 0.030 22 5 3.2 0.18
2507 S32750 0.030 25 7 4 0.3

* All materials are supplied in the solution annealed condition. Other grades can be offered on request.

Grade Yield strength,
psi (MPa)
Tensile strength,
psi (MPa)
Elongation
%
Mechanical properties1)
TP 316L ≥32,000 (220) ≥75,000 (515) ≥35
Alloy 825 ≥35,000 (240) ≥80,000 (550) ≥30
28 ≥32,000 (220) ≥100,000 (690) ≥40
2205 ≥70,000 (485) ≥99,000 (680) ≥25
2507 ≥80,000 (550) ≥116,000 (800) ≥25

1) All materials in the solution annealed condition

Grade UNS PRE1) CPT2) o
F (
oC)
Max. H2S3 psi CO24)
Corrosion properties
TP 316L S31600/S31603 ≥24 95 (35) No Limit +
Alloy 825 N08825 ≥29 140 (60) No Limit ++
28 N08028 ≥39 150 (65) No Limit ++
2205 S31803/S32205 ≥35 150 (65) 1.5 +
2507 S32750 ≥42.5 195 (90) 3 ++

1) PRE = (%Cr) + 3.3 (%Mo) +16 (%N)
2) Critical Pitting Temperature in neutral solution with approximately 3% chlorides
3) Per NACE MR0175 / ISO 15156 for downhole control lines in the solution annealed condition
4) General resistance to CO2 corrosion. ‘++’ indicates better resistance than ‘+’

Outside diameter Wall thickness Max single coil length (TP 316L) Max single
coil length (A825)
Max LLBW1) 2)
in. in. m ft m ft m ft
Sizes and single coil lengths
1/4 0.035 252 827 640 2,100 29,000 95,149
1/4 0.049 192 630 488 1,601 22,000 72,182
1/4 0.065 158 518 401 1,316 18,000 59,058
3/8 0.035 159 522 404 1,326 18,000 59,058
3/8 0.049 118 387 300 984 14,000 45,934
3/8 0.065 94 308 239 784 11,000 36,091
3/8 0.083 78 256 199 653 9,000 29,529
1/2 0.035 116 381 296 971 13,000 24,653
1/2 0.049 85 279 217 712 10,000 32,810
1/2 0.065 67 220 171 561 7,500 24,608
1/2 0.083 55 180 139 456 6,000 19,686
5/8 0.035 92 302 234 767 10,750 35,271
5/8 0.049 67 220 171 561 7,500 24,608
5/8 0.065 52 171 131 430 6,100 20,014
5/8 0.083 25 82 25 82 5,000 16,405
3/4 0.035 25 82 25 82
3/4 0.049 25 82 25 82
3/4 0.065 25 82 25 82
3/4 0.083 25 82 25 82

1) Long length can be manufactured but with welded joint.

Category Classification Material  Size
Structure  Cable Conductor 铜 Copper φ0.040in
Insulation FEP φ0.103in*0.031in
Filler PP φ0.178in*0.037in
 Tubing 2507 3*φ1/4in*0.036in
825 1*φ1/4in*0.036in
 Encapsulation TPV 1.299in*0.433in
Property

 

1.The tube material is 825,yield strength of the tube is 40,000psi, tensile strength is 70,000psi. The tube material is 2507,yield strength of the tube is 80,000psi, tensile strength is 116,000psi.
2.Insulation material FEP temperature range: -110℃-200℃,the density 2.15g/cm3.
3.The filler material PP temperature range:-30℃-120℃,the density 0.92g/cm3
4.Encapsulation material TPV temperature range: - 30 ℃ -- 150 ℃, the density 1.77 g/cm3.

Encapsulation materials

Baosheng offers a wide range of encapsulation materials. The most frequent ones can be found in the table below. Other encapsulation materials can be offered upon request.

Material rating on a scale of 1 to 5 (1=not good, 5=excellent)

Materials Max temp.
oF (Co)
Abrasion resistance Resistance to inhibited brine well fluids Resistance to
oil/diesel well fluids
Polypropylene 150 (65) 2 5 3
Nylon 11 200 (93) 4 3 3
PVC 174 (79) 3 2 3
TPV 275 (135) 3 5 3
Halar 300 (149) 4 4 5
PVDF 310 (154) 4 3 5
MPH340G 340 /171) 4 4 5

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