Pneumatic Internal Pipe Clamp
Internal Alignment for Mainline Welding (10\" - 60\")
For high-production mainline pipeline construction, Technical Pipeline's Pneumatic Internal Pipe Clamp delivers rapid, repeatable internal alignment without slowing down the welding spread. Powered entirely by compressed air, the clamp expands against the internal pipe wall to bring both sections into true concentric alignment before the root pass.
Umbrella Radial Actuation
Synchronized shoe expansion delivers uniform internal circular pressure
Out-of-Round Correction
Forces pipe ends back into true concentric roundness prior to tacking
High-Speed Spread Cycle
Pneumatic fast expand & retract keeps pace with mechanized welding







Pneumatic Internal Pipe Clamp (10" - 60")
Compressed-air powered internal clamp with umbrella-opener expanding shoes for rapid, concentric mainline joint line-up.
INTERNAL ALIGNMENT FOR HIGH-PRODUCTION SPREADS
ENGINEERED FOR MAINLINE SPREADS
Delivering uniform internal expansion, zero root obstruction, and high spread production speed.
UMBRELLA-OPENER ACTUATION
Umbrella-opener mechanism expands clamping shoes evenly around the internal circumference.
SCALED SHOE ARCHITECTURE
Shoe count scales with model size (6 to 30) for uniform internal pressure at every diameter.
10" TO 60" STANDARD RANGE
Standard models form a continuous size ladder from 10" up to 60" (273–1524 mm).
SCALED WALL THICKNESS
Recommended wall thickness scales with model size, from 5-12.7 mm up to 9.5-19 mm.
OUT-OF-ROUND RE-ROUNDING
Corrects out-of-round pipe ends while achieving perfect coaxial and concentric alignment.
100% EXTERNAL CLEARANCE
Leaves external pipe seam totally open for high-speed mechanized orbital welding bugs.
| Model Type | Pipe size mm. | Pipe size inch | Force type | Actuation Type | Force shape | Recommended Wall Thickness Schedule 40 | Kg | Request Quote |
|---|---|---|---|---|---|---|---|---|
| THCP 0301 10 | Ø 273 | 10" | Pneumatic Umbrella (6 Shoes) | Trapezoidal Screw | 5 | 5 - 12.7 mm | - | |
| THCP 0301 12 | Ø 323.9 | 12" | Pneumatic Umbrella (6 Shoes) | Trapezoidal Screw | 5 | 6 - 19 mm | - | |
| THCP 0301 1214 | Ø 323.9 - Ø 355.6 | 12" - 14" | Pneumatic Umbrella (6 Shoes) | Trapezoidal Screw | 5 | 6 - 19 mm | - | |
| THCP 0301 14 | Ø 355.7 | 14" | Pneumatic Umbrella (6 Shoes) | Trapezoidal Screw | 5 | 6 - 19 mm | - | |
| THCP 0301 16 | Ø 406.5 | 16" | Pneumatic Umbrella (8 Shoes) | Trapezoidal Screw | 5 | 6 - 19 mm | - | |
| THCP 0301 1618 | Ø 406.4 - Ø 457.2 | 16" - 18" | Pneumatic Umbrella (8 Shoes) | Trapezoidal Screw | 5 | 6 - 19 mm | - | |
| THCP 0301 18 | Ø 457.2 | 18" | Pneumatic Umbrella (8 Shoes) | Trapezoidal Screw | 5 | 6 - 19 mm | - | |
| THCP 0301 20 | Ø 508 | 20" | Pneumatic Umbrella (10 Shoes) | Trapezoidal Screw | 5 | 6 - 19 mm | - | |
| THCP 0301 2022 | Ø 508 - Ø 558.8 | 20" - 22" | Pneumatic Umbrella (10 Shoes) | Trapezoidal Screw | 5 | 8 - 19 mm | - | |
| THCP 0301 22 | Ø 558.8 | 22" | Pneumatic Umbrella (10 Shoes) | Trapezoidal Screw | 5 | 8 - 19 mm | - | |
| THCP 0301 24 | Ø 609.6 | 24" | Pneumatic Umbrella (12 Shoes) | Trapezoidal Screw | 5 | 8 - 19 mm | - | |
| THCP 0301 2426 | Ø 609.6 - Ø 660.4 | 24" - 26" | Pneumatic Umbrella (12 Shoes) | Trapezoidal Screw | 5 | 8 - 19 mm | - | |
| THCP 0301 26 | Ø 660.4 | 26" | Pneumatic Umbrella (12 Shoes) | Trapezoidal Screw | 5 | 8 - 19 mm | - | |
| THCP 0301 2830 | Ø 711.6 - Ø 762 | 28" - 30" | Pneumatic Umbrella (16 Shoes) | Trapezoidal Screw | 5 | 8 - 19 mm | - | |
| THCP 0301 30 | Ø 762 | 30" | Pneumatic Umbrella (16 Shoes) | Trapezoidal Screw | 5 | 8 - 19 mm | - | |
| THCP 0301 3032 | Ø 762 - Ø 812.8 | 30" - 32" | Pneumatic Umbrella (16 Shoes) | Trapezoidal Screw | 5 | 8 - 19 mm | - | |
| THCP 0301 32 | Ø 812.8 | 32" | Pneumatic Umbrella (16 Shoes) | Trapezoidal Screw | 5 | 8 - 19 mm | - | |
| THCP 0301 34 | Ø 863.6 | 34" | Pneumatic Umbrella (18 Shoes) | Trapezoidal Screw | 5 | 8 - 19 mm | - | |
| THCP 0301 3436 | Ø 863.6 - Ø 914.4 | 34" - 36" | Pneumatic Umbrella (18 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 36 | Ø 914.4 | 36" | Pneumatic Umbrella (18 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 40 | Ø 1016 | 40" | Pneumatic Umbrella (24 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 4042 | Ø 1016 - Ø 1067 | 40" - 42" | Pneumatic Umbrella (24 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 42 | Ø 1067 | 42" | Pneumatic Umbrella (24 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 4244 | Ø 1067 - Ø 1118 | 42" - 44" | Pneumatic Umbrella (24 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 44 | Ø 1118 | 44" | Pneumatic Umbrella (24 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 4446 | Ø 1118 - Ø 1168 | 44" - 46" | Pneumatic Umbrella (24 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 46 | Ø 1168 | 46" | Pneumatic Umbrella (24 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 4648 | Ø 1168 - Ø 1219 | 46" - 48" | Pneumatic Umbrella (24 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 48 | Ø 1219 | 48" | Pneumatic Umbrella (24 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 50 | Ø 1270 | 50" | Pneumatic Umbrella (26 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 52 | Ø 1321 | 52" | Pneumatic Umbrella (26 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 5254 | Ø 1321 - Ø 1372 | 52" - 54" | Pneumatic Umbrella (26 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 54 | Ø 1372 | 54" | Pneumatic Umbrella (26 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 56 | Ø 1422 | 56" | Pneumatic Umbrella (26 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 5660 | Ø 1422 - Ø 1524 | 56" - 60" | Pneumatic Umbrella (26 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - | |
| THCP 0301 60 | Ø 1524 | 60" | Pneumatic Umbrella (30 Shoes) | Trapezoidal Screw | 5 | 9.5 - 19 mm | - |
MAINLINE PRODUCTION SPREADS
Engineered for high-volume cross-country pipeline construction and mechanized orbital welding.
Cross-Country Mainline Pipeline Construction
High-speed line-up of consecutive pipe joints along extensive transmission pipeline corridors.
High-Volume, Repetitive Joint Welding on Pipeline Spreads
Fast cycle pneumatic expansion and retraction keeps pipeline firing lines advancing continuously.
Mechanized and Automatic Root Pass Welding Systems
Provides essential internal radial contact and copper backing support for automated GMAW weld heads.
Zero-Obstruction Pipe Tie-Ins
Completely eliminates external weld-zone interference, giving welding bugs 360° unobstructed track access.
OTHER INTERNAL LINE-UP CLAMPS PRODUCTS

Hydraulic Manual Internal Pipe Clamp
Compact Internal Alignment for Smaller Diameters (6" - 24")
VIEW RANGE →
Hydraulic Internal Pipe Clamp
Hydraulic Internal Pipe Clamp (26" - 60")
VIEW RANGE →
Internal Spider Clamp
Präzisions-Rohrausrichtung am Grabenrand für Fernleitungen (36" bis 240")
VIEW RANGE →
Internal Mechanical Alignment Clamps
Manual Internal Line-Up Clamps with Non-Marking Bronze Shoes for Small-Bore Tubing (15 – 64 mm)
VIEW RANGE →Accelerate Mainline Spread Alignment
Contact Technical Pipeline engineers to select the exact THCP 0301 Pneumatic Internal Clamp model and copper backing options for your pipeline spread.
