Transmission Pipe
Project-controlled pipe body and weld seam for suitable oil and gas transmission duties.
PIPELINE & PROCESS
ERW/HFW Line Pipe
Efficient welded line pipe supply for transmission, gathering and process-piping applications.
StandardAPI 5L / ISO 3183 · Applicable pipeline design code
Size / supply rangeOutside diameter, wall thickness and length confirmed for the selected mill route · Plain or beveled ends
Grades / materialsGrade B and L245 · X42 / L290 through X70 / L485 typical project range
Connections / optionsLongitudinal ERW/HFW seam · Beveled weld ends
HIGH-FREQUENCY WELDED LINE PIPE
ERW/HFW Line Pipe configured around the complete order.
ERW/HFW line pipe is continuously formed from strip or coil and joined through a longitudinal high-frequency welding process. Weld-seam control and full-pipe verification are central to the supply route.
SUPPLY OVERVIEW
Typical erw/hfw line pipe specification fields.
Use this table to prepare an initial enquiry. Final combinations, tolerances and acceptance criteria are confirmed during technical review.
| Manufacturing route | Continuous forming with ERW / HFW longitudinal seam |
|---|---|
| Product level | PSL1 or PSL2 where API 5L applies |
| Grade | Grade B and higher-strength options, subject to diameter–wall–grade review |
| Dimensions | Outside diameter, wall thickness and length confirmed against mill route |
| Ends | Plain or beveled ends; other preparation by agreement |
| Coating | Bare or coordinated with FBE, 3LPE, 3LPP or selected internal coating |
PRODUCT CONFIGURATION
Options organized around the application.
The listed configurations are procurement pathways, not automatic statements of availability.
Gathering Pipe
Efficient supply route for field gathering and distribution requirements.
Bare Pipe
End preparation, surface condition, marking and protection defined by the order.
Coated Pipe
Base-pipe and coating requirements coordinated as one inspection and delivery package.
TYPICAL APPLICATIONS
Where the product fits.
Selection remains subject to the design authority, operating conditions and governing specification.
Oil & Gas Gathering
Gathering lines and field networks designed around applicable service conditions.
Transmission & Distribution
Suitable pipeline systems within confirmed dimensional and performance capability.
Process & Utility
Selected process, utility or structural applications where specified.
QUALITY & DOCUMENTATION
Verification aligned with the agreed order.
The applicable tests, inspection points and document package are fixed before manufacturing release.
01Coil / strip and heat traceability
02Welding-process and seam-heat-treatment control
03Online and final weld-seam NDT
04Hydrostatic and dimensional testing
05End, surface, marking and coating-interface checks
06MTC and agreed inspection dossier
ERW/HFW LINE PIPE RFQ CHECKLIST
Send the complete product and service requirement.
These inputs allow OAK PIPE to organize a technically meaningful and commercially comparable response.
Request a Technical Quote- 01Standard, edition, grade and PSL
- 02Diameter, wall, length and quantity
- 03Operating medium, pressure and temperature
- 04Toughness and supplementary test requirements
- 05Bare or coated supply and end preparation
- 06Inspection, documents, destination and schedule
PRODUCT & PROCESS VIEWS
Product views and manufacturing context.
Representative product, production and inventory views support preliminary identification. Final supply details are confirmed against the quotation.
START A CONVERSATION
Have a specification or product list?
Send it to OAK PIPE for technical and commercial review.