Applications
- Pipeline route changes and crossings
- Compressor, metering and terminal piping
- Offshore, subsea and high-pressure flowline systems

PIPELINE COMPONENTS
Project-specific bends coordinated with base-pipe grade, geometry, heat treatment, testing and coating requirements.
TECHNICAL PROCUREMENT
Availability and final supply scope are confirmed after technical review. OAK PIPE coordinates the product configuration, manufacturing route, inspection requirements and delivery package against the enquiry.
PROCUREMENT BASIS
This summary supports preliminary comparison. Final dimensions, tolerances, availability and acceptance requirements are confirmed against the enquiry and governing purchase documents.
| Reference basis | ISO 15590-1, ASME B16.49 and the applicable project line-pipe, bending and coating specifications |
|---|---|
| Product configuration | Seamless, HFW or SAW mother-pipe routes · Specified bend angle, radius, tangents and end preparation · Bare, field-joint-compatible or fully coated bends |
| Verification basis | Mother-pipe and bend traceability · Heat-treatment, dimensional and ovality verification · Mechanical testing, NDT, hydrostatic and coating inspection as specified |
| Commercial confirmation | Size or drawing · Material / grade · Quantity · Service conditions · Inspection scope · Destination and schedule |
The purchase order, approved drawings and agreed specification take precedence over this website summary.
RFQ CHECKLIST
A clear starting specification allows faster technical review and a more accurate commercial response.
Prepare Your RFQPRODUCT OVERVIEW
Induction bends provide controlled changes in pipeline direction while retaining a continuous pipe section through the bend. The complete order definition includes mother-pipe route, diameter, wall, grade, bend angle, centerline radius, tangent lengths, end preparation and heat-treatment condition.
ISO 15590-1:2024 defines technical delivery conditions for induction bends for pipeline transportation systems and recognizes two product specification levels aligned with ISO 3183 pipe. ASME B16.49-2023 covers factory-made wrought-steel induction bends for transportation and distribution systems. The applicable standard and edition must be fixed by the purchase specification.
Manufacturing qualification, forming-temperature control, dimensional survey, mechanical testing, NDT, hydrostatic testing and coating restoration are coordinated according to the approved project route.

TECHNICAL SCOPE
Use this overview to prepare an enquiry. The final size, grade, connection and inspection combination is confirmed against the governing specification.
| Technical field | Available or review basis |
|---|---|
| Standards | ISO 15590-1 · ASME B16.49 · API 5L / ISO 3183 mother-pipe basis · Project bending and coating specification |
| Size & supply range | Dimensions coordinated with qualified bending equipment and mother pipe · Bend angle, centerline radius and tangent lengths by drawing · Wall-thickness and ovality allowances defined by project |
| Grades & materials | Carbon and low-alloy line-pipe grades · Sour-service, low-temperature and offshore grades subject to qualification |
| Connections & options | Butt-weld ends · Specified bevel geometry · Coating cutback and field-joint interface |
PRODUCT PARAMETERS
The values below come from the maintained OAK product record. Contract dimensions, tolerances and acceptance criteria remain subject to final order review.
| Parameter | Specification / value |
|---|---|
| Reference standards | ISO 15590-1:2024, ASME B16.49-2023 or purchaser specification |
| Geometry | OD, wall, bend angle, centerline radius, tangents and end preparation by order |
| Mother pipe | Seamless, HFW or SAW line pipe subject to project qualification |
APPLICATIONS
SERVICE & SELECTION
MANUFACTURING
Key operations are coordinated against the product specification and order requirements.
INSPECTION & TESTING
QUALITY DOCUMENTS
PACKING & DELIVERY
Marking, protection and shipment details are confirmed during order review.
RFQ CHECKLIST
Share the available technical and commercial requirements. Missing details can be reviewed with our team.
Request a QuotePRODUCT & PROCESS VIEWS
Representative product, production and inventory views support preliminary identification. Final supply details are confirmed against the quotation.



START A CONVERSATION
Send it to OAK PIPE for technical and commercial review.