API 5L Line Pipe
Specify the line-pipe grade, PSL, manufacturing route and wall for the transmission or distribution schedule.
Select the pipe and connected components
ERW Steel Pipe
Use the specified ERW product grade for distribution lines, plant utility runs and dimension-based pipe orders.
LSAW Steel Pipe
Price longitudinal submerged-arc-welded pipe by the line specification, outside diameter, wall and end preparation.
SSAW Steel Pipe
Order spiral-welded pipe with the specified seam route, inspection and coating requirements on the line list.
Seamless Carbon Steel Pipe
Identify the carbon-steel material specification and wall in each process or steam piping class.
OCTG Casing & Tubing
Keep well casing and tubing in their own API 5CT order with grade, size and connection requirements.
Stainless Steel Pipe
Specify stainless grade, dimensional series and weld route for the process fluid and corrosion exposure.
Boiler Tubes
Order boiler and heat-transfer tubes by OD, wall, grade and heat-treatment requirement rather than a pipe schedule alone.
Coated Steel Pipe
Put the steel pipe and external or internal protection on the same line, including cutbacks and inspection.
Butt Weld Pipe Fittings
Match elbows, tees and reducers to the pipe OD, wall and butt-weld end details.
Pipe Flanges
Specify flange standard, class, facing and bore with the mating pipe and equipment connection.
Industrial Pipe Valves
Include valve duty, material, pressure class and end connection in the connected-system schedule.
Alloy Steel Pipe
Alloy pipe for specified temperature and process duties, with grade and heat-treatment requirements kept together.
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Transmission and Plant-Piping Requirements
Oil and gas transmission
Transmission schedules center on line-pipe grade, PSL and the accepted welded or seamless route. Pipe ends, coating and delivery lots follow the line design and construction sections.
- OD and nominal wall
- PSL, grade and required edition
- Coating and field-joint requirements
Plant process and steam piping
Process and steam lines use their specified carbon, alloy or stainless materials. The service temperature, medium and piping class determine the material and connection schedule.
- Design pressure and temperature
- Fluid service and material specification
- Pipe and fitting dimensional series
Water, air and utility networks
Utility packages combine the selected water or air pipe with matching fittings and valves. Fire-water pumps are a separate equipment item selected by flow and head.
- Fluid and internal lining
- Welded, flanged, threaded or grooved ends
- Buried or exposed installation
| NPS (in.) | Schedule | OD (in.) | Nominal wall (in.) | Nominal bare-steel bore (in.) |
|---|---|---|---|---|
| 2 | 40 | 2.375 | 0.154 | 2.067 |
| 2 | 80 | 2.375 | 0.218 | 1.939 |
| 4 | 40 | 4.500 | 0.237 | 4.026 |
| 4 | 80 | 4.500 | 0.337 | 3.826 |
| 6 | 40 | 6.625 | 0.280 | 6.065 |
| 6 | 80 | 6.625 | 0.432 | 5.761 |
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Pipe Specifications and Piping Design
API 5LLine pipeUse the requested edition, grade and PSL for a line-pipe order. Casing and tubing belong to API 5CT orders and retain their own well-string connection details.
ASME B31.3Process pipingThe process piping specification governs the system design and acceptance. The purchase list identifies the material standard, wall and components selected for that piping class.
ASME B36.10 / B36.19DimensionsCarbon-steel and stainless dimensional series identify OD and nominal wall. An S-schedule or other dimensional designation stays on the order rather than being shortened to size alone.
Prepared Ends and Mating Connections
Ends and weld preparation
Plain, beveled, threaded or grooved ends follow the selected joining method. Include the weld end or thread specification with cut lengths and fittings.
Coating and cutbacks
External protection is priced with the pipe, surface preparation and end cutback. The field-joint system belongs in the corrosion scope for the installed pipeline.
Connected-item schedules
Elbows, reducers, flanges and valves keep their own sizes, materials and counts. Matching nominal size is only one part of the connection.
Packing by line and size
We separate pipe sizes and protect prepared ends for handling. Bundle identification connects the dimensions and quantity to the material schedule and packing list.
Acceptance records for the actual pipe order
Checks linked to the line list
Grade and heat identityMaterial records identify the steel grade and traceable heat or batch for the supplied pipe.
Wall, diameter and endsDimensions and prepared ends follow the purchased pipe series, manufacturing route and tolerances.
Required testingThe order inspection plan identifies hydrostatic, NDE, mechanical and any supplementary tests applicable to each pipe item.
Coating and liningThe protection specification sets preparation, thickness, cutback and coating acceptance, including the records required at release.
Documents grouped by pipe and component
- Line list and piping-class references
- Requested specification editions and PSL
- Pipe material test records
- Specified weld, NDE and hydrostatic records
- Coating or lining inspection reports
- Size, length, heat/batch and bundle packing list
Read the dimensions and connection guides
Pipe sizes and schedules
Check the distinction between nominal size, outside diameter and wall before completing the takeoff.
Ends, connections and coatings
Put weld preparation, thread or groove details and corrosion protection beside the pipe item.
Pipe purchasing and inspection
Identify the records and inspections needed to receive the selected pipe order.
Oil, gas and industrial piping orders
Can a thicker wall replace the pipe wall on my schedule?
A thicker wall reduces the bore at the same OD and changes weight, fitting bores and weld details. Submit the proposed change for the project design review before replacing the specified wall on the order.
What happens when one line item changes after the schedule is released?
Identify the affected line number, item and drawing or piping-class revision. We separate its changed grade, dimensions, preparation and quantity from the unchanged order lines before the revised supply scope is accepted.
Can API 5L and ASTM process-pipe items share one shipment?
They can be quoted as separate material lines with their own grade, wall, ends and acceptance requirements. A combined shipment does not merge their standards or inspection records.
Get a quote for your piping schedule
Send the line list or piping class with pipe dimensions, quantities and delivery destination. Our quotation separates pipe manufacture, preparation, protection and connected items.
- Service, specification, grade and PSL
- OD or NPS, wall, lengths and ends
- Coating, fittings and inspection requirements