We offer a wide range of seamless and seam-welded chemical injection lines designed to meet the toughest requirements of the oil and gas industry. Having served the industry for more than 50 years, we understand your needs to enhance production, boost safety and protect infrastructure.
Our chemical injection lines, available in a diverse range of materials and formats, are aimed to ensure safe and efficient operations. Common challenges and needs include:
Corrosion prevention and control
Scale and deposit inhibition
Hydrate and wax management
Emulsion breaking
Biocide treatment
Sour gas treatment
Enhanced oil recovery (EOR)
Pipeline integrity management
Environmental compliance: Chemical injection systems may include components for injecting chemicals to meet environmental regulations, such as reducing emissions or treating produced water before disposal.
Chemical injection lines are vital in oil and gas operations for asset integrity, production optimization, environmental protection, and regulatory compliance. Effective design, operation, and maintenance are crucial for their reliability.
Ask our experts in Houston for support
For specific challenges, our Houston-based experts, located at a global competence center for chemical injection tubing, are ready to assist. We prioritize fast service and delivery, supported by our mills in Europe, Asia and Scranton, Pennsylvania. In Houston, we continue to build out capacity for welding and radiographic inspection to boost speed and quality. Contact us using the form below.
Corrosion in these lines poses significant challenges and requires careful management.
Types of corrosion: Common variants range from general corrosion and localized corrosion (such as pitting or crevice corrosion) to stress corrosion cracking (SCC). Each type of corrosion requires specific prevention and mitigation strategies.
Corrosive environments: Chemical injection lines are often exposed to corrosive environments due to the presence of various chemicals, high temperatures, and high pressures. These factors can accelerate corrosion rates and increase the risk of pipeline degradation.
Material selection: Selecting corrosion-resistant materials is essential for long-term integrity of chemical injection lines. Commonly used materials include stainless steel, corrosion-resistant alloys, and polymer-lined pipes to mitigate corrosion risks.
Regular maintenance: Implementing a comprehensive maintenance program that includes cleaning, flushing, and periodic integrity assessments is essential for preserving the condition of chemical injection lines and extending their service life.
Flexible range of materials and formats
We offer control lines and chemical injection lines in austenitic stainless steel and duplex stainless steel. These can be provided in cut-to-length lines or groups, encapsulated, flushed and filled, and supplied on customers’ own reels, with direct delivery to your site. Don’t hesitate to contact us to discuss your needs.
Sandvik's service center in Houston (TX), US holds extensive seamless coiled tube and laser welded tube stocks for control lines and chemical injection lines to ensure just-in-time deliveries. It also operates a complete package of additional services:
Cut to length
Hydrotesting
Paint striping
Encapsulation
Flush and fill (acc. to Nas Class 6)
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
The tables show materials, sizes and approvals for control lines and chemical injection lines in seamless condition.
Materials* (including nominal chemical composition)
Grade
UNS
C max.
Cr
Ni
Mo
N
Others
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
Sanicro® 28
N08028
0.020
27
31
3.5
-
Cu=1.0
Sandvik SAF 2205™
S31803/S32205
0.030
22
5
3.2
0.18
-
Sandvik SAF 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.
Mechanical properties1)
Grade
Yield strength, psi (MPa)
Tensile strength, psi (MPa)
Elongation %
TP 316L
32,000 (220)
75,000 (515)
35
Alloy 825
35,000 (240)
80,000 (550)
30
Sanicro® 28
32,000 (220)
100,000 (690)
40
Sandvik SAF 2205™
70,000 (485)
99,000 (680)
25
Sandvik SAF 2507®
80,000 (550)
116,000 (800)
25
1) All materials in the solution annealed condition
Corrosion properties
Grade
UNS
PRE1)
CPT2) o F (oC)
Max. H2S3psi
CO24)
TP 316L
S31600/S31603
24
95 (35)
No Limit
+
Alloy 825
N08825
29
140 (60)
No Limit
++
Sanicro® 28
N08028
39
150 (65)
No Limit
++
Sandvik SAF 2205™
S31803/S32205
>35
150 (65)
1.5
+
Sandvik SAF 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 '+'
Sizes and single coil lengths
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
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 butt welded 2) For 3/4 in. OD single coils can be made. Contact us for complete details.
Approvals
ISO 9001:2000
ISO 14001:2004
OHSAS 18001
PED 97/23/EC
ANSI NACE MR 0175 / ISO 15156
The tables show materials, sizes and approvals for control lines and chemical injection lines in welded condition.
Materials* (including nominal chemical composition)
Grade
UNS
C
max.
Cr
Ni
Mo
Others
TP 316L
S31600/S31603
0.030
17.5
13
2.1
0.1
Alloy 825
N08825
0.030
20
38.5
2.6
Cu=1.7, Ti=0.7
Alloy 625
N6625
0.10
21.5
>=58
9
Nb=3.5
*All materials are supplied in the solution annealed condition. Other grades can be offered on request.
Mechanical properties1)
Grade
Yield strength,
psi (MPa)
Tensile strength,
psi (MPa)
Elongation
%
TP 316L
32,000 (220)
75,000 (515)
35
Alloy 825
35,000 (240)
80,000 (550)
30
Alloy 625
60,000 (415)
110,000 (760)
30
1) All materials in the solution annealed condition
Corrosion properties
Grade
UNS
PRE1)
CPT2)F (oC)
Max H2S3)psi
CO24)
TP 316L
S31600/S31603
24
95 (35)
No limit
+
Alloy 825
N08825
29
140 (60)
No limit
++
Alloy 625
N06625
52
195 (90)
No limit
++
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 '+'
Size range (in.)
The table shows stock standard sizes. Other sizes can be offered on request.
OD
WT
OD
WT
OD
WT
OD
WT
OD
WT
1/4
0.035
3/8
0.035
1/2
0.035
5/8
0.035
3/4
0.035
1/4
0.049
3/8
0.049
1/2
0.049
5/8
0.049
3/4
0.049
1/4
0.065
3/8
0.065
1/2
0.065
5/8
0.065
3/4
0.065
-
-
3/8
0.083
1/2
0.083
5/8
0.083
3/4
0.083
OD = Outside diameter, WT = Wall thickness
Approvals
ISO 9001:2000
Intertek
MGMT. SYS. RvA 050
ANAB
Sandvik 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
Selection of the appropriate material for any given control or chemical injection line is subject to the prevailing operational and site conditions. In order to assist in the selection, the following tables provide internal pressure ratings and the adjustments factors for a range of common grades and sizes of seamless and laser welded stainless tubing.
Maximum pressure (P) for TP 316L at 100°F (38°C)1)
Please refer to grade and product form adjustment factors below.
Outside diameter, in.
Wall thickness, in.
Working pressure2) psi (MPa)
Burst pressure2) psi (MPa)
Collapse pressure4) psi (MPa)
1/4
0.035
6,600 (46)
22,470 (155)
6,600 (46)
1/4
0.049
9,260 (64)
27,400 (189)
8,710 (60)
1/4
0.065
12,280 (85)
34,640 (239)
10,750 (74)
3/8
0.035
4,410 (30)
19,160 (132)
4,610 (32)
3/8
0.049
6,170 (43)
21,750 (150)
6,220 (43)
3/8
0.065
8,190 (56)
25,260 (174)
7,900 (54)
3/8
0.083
10,450 (72)
30,050 (207)
9,570 (66)
1/2
0.049
4,630 (32)
19,460 (134)
4,820 (33)
1/2
0.065
6,140 (42)
21,700 (150)
6,200 (43)
1/2
0.083
7,840 (54)
24,600 (170)
7,620 (53)
5/8
0.049
3,700 (26)
18,230 (126)
3,930 (27)
5/8
0.065
4,900 (34)
19,860 (137)
5,090 (35)
5/8
0.083
6,270 (43)
26,910 (151)
6,310 (44)
3/4
0.049
3,080 (21)
17,470 (120)
3,320 (23)
3/4
0.065
4,090 (28)
18,740 (129)
4,310 (30)
3/4
0.083
5,220 (36)
20,310 (140)
5,380 (37)
1) Estimates only. Actual pressures should be calculated considering all stress factors in the system. 2) Based on calculations from API 5C3, using a wall tolerance of +/-10% 3) Based on ultimate strength burst calculations from API 5C3 4) Based on yield strength collapse calculations from API 5C3
Adjustment factors for working pressure limits1)
Pw = reference working pressure rating for TP 316L at 100°F (38°C). To determine working pressure for grade/temperature combination, multiply Pw by adjustment factor.
Grade
100°F (38°C)
200°F (93°C)
300°F (149°C)
400°F (204°C)
TP 316L, seamless
1.00
0.87
0.70
0.63
TP 316L, welded
0.85
0.74
0.60
0.54
Sandvik SAF 2205™, seamless
2.17
2.00
1.77
1.60
Sandvik SAF 2205™, welded
1.84
1.70
1.50
1.36
Alloy 825, seamless
1.33
1.17
1.10
1.03
Alloy 825, welded
1.13
0.99
0.94
0.88
Sandvik SAF 2507® , seamless
2.67
2.33
2.17
1.70
Sandvik SAF 2507® , welded
2.27
1.98
1.84
1.45
1) Adjustment factors based on allowable stress in ASME. Example: The maximum factors allowable working pressure for seamless 1/2 x 0.049 in. Sandvik SAF 2507® tubing at 100°F (38°C) can be calculated as: 4,630 psi – Pressure rating for TP 316L at 100°F (38°C) x 2.67 – Adjustment factor for Sandvik SAF 2507, seamless at 100°F (38°C) 12,362 psi – Working pressure rating for Sandvik SAF 2507® tubing
Adjustment factors for burst pressure limits1)
Pb = reference burst pressure for TP 316L at 100°F. To determine burst pressure for grade/temperature combination, multiply Pb by adjustment factor.
Grade
100°F (38°C)
200°F (93°C)
300°F (149°C)
400°F (204°C)
TP 316L, seamless
1.00
0.93
0.87
0.80
TP 316L, welded
0.85
0.79
0.74
0.68
Sandvik SAF 2205™, seamless
1.71
1.33
1.20
1.07
Sandvik SAF 2205™, welded
1.45
1.13
1.02
0.91
Alloy 825, seamless
1.13
1.07
1.00
0.87
Alloy 825, welded
0.96
0.91
0.85
0.74
Sandvik SAF 2507® , seamless
1.97
1.75
1.57
1.35
Sandvik SAF 2507® , welded
1.64
1.47
1.31
1.13
1) Adjustment factors based on ultimate strength in ASME. Example: The maximum factors burst pressure for seamless 3/8 x 0.049 in. Sandvik SAF 2507® tubing at 200°F (93°C) can be calculated as: 21,750 psi – burst pressure rating for TP 316L at 100°F (38°C) x 1.73 – Adjustment factor for Sandvik SAF 2507, seamless at 200°F (93°C) 37,627 psi – burst pressure rating for Sandvik SAF 2507® tubing
Adjustment factors for collapse pressure limits1)
Pc = reference collapse pressure rating for TP 316L at 100°F (38°C). To determine collapse pressure for grade/temperature combination, multiply Pc by adjustment factor.
Grade
100°F (38°C)
200°F (93°C)
300°F (149°C)
400°F (204°C)
TP 316L, seamless
1.00
0.87
0.70
0.63
TP 316L, welded
0.85
0.74
0.60
0.54
Sandvik SAF 2205™, seamless
2.17
2.00
1.77
1.60
Sandvik SAF 2205™, welded
1.84
1.70
1.50
1.36
Alloy 825, seamless
1.33
1.17
1.10
1.03
Alloy 825, welded
1.13
0.99
0.94
0.88
Sandvik SAF 2507® , seamless
2.67
2.33
2.17
1.70
Sandvik SAF 2507® , welded
2.27
1.98
1.84
1.45
1) Adjustment factors based on yield strength in ASME. Example: The maximum factors collapse pressure for seamless 1/4 x 0.035 in. Alloy 825 tubing at 200°F (93°C) can be calculated as: 6,600 psi – Collapse pressure rating for ASTM 316L at 100°F (38°C) x 1.17 – Adjustment factor for Alloy 825 seamless at 200°F (93°C) 7,722 psi – Collapse pressure rating for Alloy 825 tubing
