Control lines and chemical injection lines Skip to content

Alleima'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.

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

¹⁾ All materials in the solution annealed condition

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 '+'

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
• API Q1

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

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

¹⁾ All materials in the solution annealed condition

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 = Outside diameter, WT = Wall thickness

Approvals

• ISO 9001:2000
• Intertek
• MGMT. SYS. RvA 050
• ANAB

Alleima 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)

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.

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.

¹⁾ Adjustment factors based on allowable stress in ASME.
Example: The maximum factors allowable working pressure for seamless 1/2 x 0.049 in. Alleima 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 Alleima SAF 2507, seamless at 100°F (38°C)
12,362 psi – Working pressure rating for Alleima 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.

¹⁾ Adjustment factors based on ultimate strength in ASME.
Example: The maximum factors burst pressure for seamless 3/8 x 0.049 in. Alleima 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 Alleima SAF 2507, seamless at 200°F (93°C)
37,627 psi – burst pressure rating for Alleima 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.

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