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Description
Product Overview
GPE manufactures High-Pressure Integral Fittings for hydraulic fracturing, cementing, acidizing, well testing, circulation, pressure-pumping and abrasive flowback systems.
An Integral Fitting combines the pressure body, flow passage and connection ends into one forged or fully integrated pressure-containing component. Unlike a fabricated assembly made from multiple pipe pieces and welded branch connections, the integral construction minimizes joint count, reduces leak paths and provides a compact high-pressure routing solution.
GPE manufactures integral elbows, tees, crosses, laterals, wyes, Y-blocks, reducers, crossovers and customized multi-port fittings. The manufacturing range covers nominal sizes from 2 to 4 in and rated working pressures from 3,000 to 20,000 psi.
Available configurations include:
- 45° and 90° elbows
- Long-Sweep elbows
- Short-Radius and Block elbows
- Flow tees
- Reducing tees
- Cross fittings
- 45° and 60° laterals
- Wye and Y-block fittings
- Reducers and crossovers
- Multi-port manifold blocks
- Male and female Hammer Union ends
- Threaded and butt-weld ends
- Standard Service
- Low-Temperature Service
- H₂S and Sour Service
- Material classes AA through EE for applicable project requirements
- Replacement-compatible dimensions
- Customer-specific port orientation and centerline dimensions
GPE Integral Fittings are installed with High-Pressure Hammer Unions, High-Pressure Plug Valves, High-Pressure Check Valves, High-Pressure Swivel Joints and Emergency Relief Valves in complete Flowline & Frac Manifold systems.
Need an Integral Fitting for a Frac or Flow Iron Manifold?
Send GPE the fitting type, size, working pressure, connection figure, male and female port orientation, centerline dimensions, service condition and quantity.
Our engineering team will prepare the correct port arrangement, dimensional drawing and factory quotation.
Request an Integral Fitting Quote:
https://gpepump.com/contact/
Send Your Manifold Drawing:
info@gpepump.com
Product Short Description
GPE High-Pressure Integral Fittings provide compact and reliable flow routing for Frac Manifolds, pump discharge lines and temporary Flow Iron.
The pressure-containing body is manufactured from high-strength alloy steel through controlled forging, heat treatment and CNC machining. The continuous pressure body reduces the number of welded branch joints and supports high-pressure service under pulsation, vibration, mechanical loading and repeated wellsite rig-up.
Long-Sweep configurations reduce abrupt directional changes and localized erosion in high-rate abrasive service. Compact block fittings reduce installation space where manifold layout controls the overall equipment envelope.
Every fitting is manufactured according to an approved drawing that defines the bore, pressure class, branch angle, centerline dimensions, port orientation, end connections, service class and inspection requirements.
Product Highlights
- Nominal sizes from 2 to 4 in
- Working pressures from 3,000 to 20,000 psi
- Metric pressure range from 21 to 140 MPa
- Integral forged or fully integrated pressure body
- Reduced joint count and leak paths
- Compact manifold routing
- 45° and 90° elbows
- Long-Sweep and block elbows
- Flow tees and reducing tees
- Cross fittings
- 45° and 60° laterals
- Wye and Y-block fittings
- Reducers and crossovers
- Customized multi-port fittings
- Male and female Hammer Union combinations
- Threaded and butt-weld connections
- Fig 602, Fig 1002, Fig 1502 and engineered 20K ends
- Standard Service
- Low-Temperature Service
- H₂S and Sour Service
- PU temperature class from -29°C to 121°C
- PL temperature class from -46°C to 121°C
- Material classes AA through EE for applicable projects
- Forged alloy-steel construction
- Controlled quenching and tempering
- CNC-machined flow bores
- Smooth internal transitions
- Long-Sweep erosion control
- Heat-number and serial-number traceability
- Forging ultrasonic inspection
- Magnetic-particle inspection
- Hardness inspection
- Dimensional inspection
- Hydrostatic pressure testing
- Custom dimensions from approved drawings
- Replacement-compatible manufacturing
Main Technical Specifications
| Parameter | GPE Manufacturing Range |
|---|---|
| Product | High-Pressure Integral Fitting |
| Alternative names | Integral Joint / Flow Iron Fitting / Manifold Fitting |
| Product category | High-Pressure Flow Iron and Frac Manifold Component |
| Nominal sizes | 2, 3 and 4 in |
| Working pressure | 3,000–20,000 psi |
| Metric pressure range | 21–140 MPa |
| Standard pressure series | 3K, 5K, 6K, 10K, 15K and 20K |
| Standard temperature range | -29°C to 121°C |
| Low-temperature range | -46°C to 121°C |
| Temperature classes | PU and PL |
| Material classes | AA–EE for applicable project requirements |
| Service environment | Standard, Low Temperature or H₂S Service |
| Available structures | Elbow, Tee, Cross, Lateral, Wye, Y-Block, Reducer and Crossover |
| Body construction | Forged and heat-treated alloy steel |
| Flow path | Full-flow or drawing-controlled bore |
| End connections | Hammer union, thread or butt weld |
| Union options | Fig 602, Fig 1002, Fig 1502 and engineered high-pressure ends |
| Port orientation | Male and female combinations according to drawing |
| Main applications | Fracturing, cementing, acidizing, testing, circulation and flowback |
| H₂S material selection | NACE MR0175 / ISO 15156 |
| Inspection | UT, MPI, hardness, dimensional and wall-thickness inspection |
| Pressure testing | Hydrostatic body and connection-integrity testing |
| Supply scope | Complete fitting, seal rings, union components and documentation |
Confirm the Correct Port Orientation and Dimensions
The fitting type alone does not define the final product. The correct configuration also depends on pressure class, bore, male and female port arrangement, branch angle, centerline dimensions, service fluid and manifold layout.
Send GPE the GA drawing, port schedule or existing fitting dimensions. We will confirm the correct integral body, union-end orientation, flow bore, material class and pressure rating.
Confirm the Correct Integral Fitting:
https://gpepump.com/contact/
Send Port and Centerline Dimensions:
info@gpepump.com
Product Range
Integral 90° Elbow
The Integral 90° Elbow changes the flow direction between horizontal, vertical or offset Flow Iron sections.
Available configurations include Male × Female, Female × Male, Male × Male, Female × Female, Long-Sweep, Short-Radius, Block and Cushion-style designs.
Integral 45° Elbow
The Integral 45° Elbow provides a more gradual directional change than a 90° fitting and is used for pump discharge routing, manifold branch alignment, Frac Tree connections, test lines and flowback routing.
Long-Sweep Elbow
The Long-Sweep design uses a larger centerline radius and a gradual internal transition to reduce local turbulence, pressure loss and direct proppant impact on the outer bend.
Block and Short-Radius Elbow
The compact block design reduces installation dimensions and is used where equipment spacing controls the manifold layout. It receives closer erosion monitoring in abrasive service because of the sharper directional change.
Integral Tee
An Integral Tee divides one flow path into two branches or combines two branches into one main line.
Common port arrangements include M × M × F, M × F × F, F × M × F, M × F × M and F × F × F.
Reducing Tee
A Reducing Tee connects a smaller branch to a larger main flowline. The approved design controls the main bore, branch bore, transition radius, wall thickness and connection orientation.
Integral Cross
An Integral Cross creates four connected flow ports in one pressure body and is used for pump-branch distribution, Frac Missile connections, test manifolds, flowback distribution and compact pressure-control packages.
Integral Lateral
Integral Laterals use an angled branch, commonly 45° or 60°, to reduce direct flow impingement and create a more gradual branch transition.
Integral Wye and Y-Block
The Wye or Y-Block divides or combines flow through two angled branches. The branch angles, bore transitions and end orientations are controlled by the approved hydraulic and dimensional drawing.
Integral Reducer and Crossover
Reducers and crossovers connect different sizes, connection figures, end orientations, thread types, pipe schedules and equipment interfaces. The assembly rating equals the lowest-rated connected pressure class.
Customized Multi-Port Fitting
GPE manufactures customized multi-port integral bodies for Frac Manifolds, pump skids, pressure-test systems and special equipment packages.
Standard Pressure Configurations
| Working Pressure | Metric Class | Typical Connection and Application |
| 3,000 psi | 21 MPa | Medium-pressure manifold and circulation service |
| 5,000 psi | 35 MPa | Well-service manifolds and test systems |
| 6,000 psi | 42 MPa | Fig 602 cementing and circulation systems |
| 10,000 psi | 70 MPa | Fig 1002 cementing, acidizing and testing |
| 15,000 psi | 105 MPa | Fig 1502 hydraulic fracturing and Flow Iron |
| 20,000 psi | 140 MPa | Engineered ultra-high-pressure pumping and test systems |
The complete fitting rating is controlled by the lowest-rated pressure body, end connection, seal system, connected pipe and service condition.
Standard Size and Pressure Matrix
| Nominal Size | 3K / 5K | 6K | 10K | 15K | 20K |
| 2 in | ● | ● | ● | ● | ● |
| 3 in | ● | ● | ● | ● | ● |
| 4 in | ● | ● | ● | ● | Engineered configuration |
The final availability of a fitting type, size, figure, end combination and pressure class is controlled by the approved manufacturing drawing.
Integral Forged vs Fabricated Welded Fittings
| Integral Forged Fitting | Fabricated Welded Fitting |
| Pressure body formed as one integrated component | Multiple pipe components joined by welds |
| Reduced number of branch welds | Additional weld intersections |
| Compact dimensions | Larger fabrication envelope |
| Controlled grain flow and wall thickness | Properties depend on pipe, weld and heat-affected zone |
| Lower number of potential leak paths | More joints require inspection |
| Ideal for compact high-pressure manifolds | Suitable for larger or lower-pressure custom assemblies |
GPE selects integral or fabricated construction according to pressure class, size, geometry, quantity, lead time and project specification.
Smooth-Bore Flow Path and Erosion Control
GPE machines the internal bore to provide a controlled transition through the body and connection ends.
A smooth flow path reduces abrupt area changes, local velocity peaks, pressure loss, solids accumulation and erosion concentration.
The highest erosion exposure occurs at outer elbow radii, opposite tee branches, cross intersections, reducers and abrupt bore transitions.
GPE controls these areas through Long-Sweep geometry, gradual bore transitions, controlled wall thickness, forged alloy-steel bodies, defined UT locations and post-service monitoring.
Male and Female Port Orientation
The approved drawing identifies every port by number, size, figure, male or female orientation, bore, pressure class and centerline dimension.
The fitting is not ordered solely by a general product name such as “tee” or “cross.”
Hammer Union, Threaded and Butt-Weld Ends
Hammer Union ends provide rapid assembly with High-Pressure Hammer Unions, valves, straight pipes and manifold components.
Threaded ends are manufactured according to the specified thread form, size, pin or box orientation and gauge requirement.
Butt-weld ends are controlled by pipe OD, bore, wall thickness, schedule, bevel, root face, material grade, welding procedure and NDE requirements.
The completed assembly pressure rating is limited by its lowest-rated component.
Standard, Low-Temperature and H₂S Service
Standard-Service fittings handle compatible non-sour fracturing fluid, cement slurry, drilling fluid, completion brine, water, compatible oil-based fluids, test fluids and flowback fluids.
PL-class low-temperature fittings use qualified pressure materials, impact testing and compatible seals for service down to -46°C.
H₂S Service fittings use controlled-hardness alloy steels, qualified heat treatment, sour-service seals, hardness inspection, full traceability and NACE MR0175 / ISO 15156 material selection.
Material Classes AA–EE
Material classes AA through EE are supplied for applicable project requirements.
The selected class controls pressure-body material, corrosion resistance, trim materials, seal compatibility and documented service environment.
API Spec 6A requirements are applied only when the fitting is ordered within its applicable wellhead, tree, flanged or hub equipment scope. Hammer Union Flow Iron fittings are manufactured to approved GPE drawings, pressure class, service condition and purchase specification.
Applications
Hydraulic Fracturing
Integral Fittings connect Frac Pumps, pump discharge manifolds, Plug Valves, Check Valves, Swivel Joints, straight pipes, Frac Missiles, Zipper Manifolds and Frac Trees.
Cementing
Integral tees, crosses and elbows connect cementing pumps, manifolds, cement heads, circulating heads and wellhead equipment.
Acidizing
Acidizing fittings use pressure materials and seals matched to acid type, concentration, corrosion inhibitor, temperature, H₂S, CO₂ and chloride content.
Well Testing and Flowback
Well-test and flowback fittings route temporary high-pressure fluid between wellhead equipment, test packages, separators, chokes and collection systems.
Manifold Integration
GPE designs Integral Fittings around the complete manifold layout, including port centerlines, equipment spacing, valve orientation, operator access, actuator clearance, gauge positions, support points, drain locations and service space.
The fitting can be supplied as part of a complete GPE Flowline & Frac Manifold system.
Replacement-Compatible Manufacturing
GPE manufactures replacement Integral Fittings from existing part numbers, approved drawings, connection schedules, measured dimensions, physical samples and manifold GA drawings.
Replacement verification includes fitting type, size, pressure class, bore, figure, port orientation, centerline dimensions, branch angle, service class and seal interface.
Manufacturing Process
- Drawing and pressure-boundary review
- Alloy-steel forging material verification
- Heat-number identification
- Forging
- Forging ultrasonic inspection
- Rough pressure-body machining
- Controlled quenching and tempering
- Mechanical-property and hardness testing
- Internal bore and branch machining
- Union, thread or weld-end machining
- Seal-groove machining
- Magnetic-particle inspection
- Dimensional and wall-thickness inspection
- Port-orientation inspection
- Connection-gauge inspection
- Hydrostatic pressure testing
- Permanent marking
- Documentation review
- End protection and export packaging
Quality Control and Pressure Testing
GPE quality control includes material verification, chemical-composition checks, heat-treatment records, mechanical-property testing, hardness testing, UT, MPI, bore inspection, wall-thickness inspection, branch-transition inspection, connection inspection and hydrostatic pressure testing.
The pressure-test record identifies the fitting model, serial number, working pressure, test pressure, medium, hold time, acceptance result and test date.
Product Marking and Documentation
Each fitting is marked with product type, nominal size, working pressure, connection figure, port orientation, service class, temperature class, material class where applicable, serial number, heat number and manufacturing date.
The documentation package includes the Certificate of Conformity, product datasheet, GA drawing, dimensional drawing, port schedule, material certificate, heat-treatment record, NDE reports, wall-thickness report and hydrostatic-test report.
Installation and Inspection
Before installation, verify the fitting type, pressure class, every port size and figure, male and female orientation, service class and sealing surfaces.
Support the fitting and connected piping so that external bending and torsional loads are not transferred into the pressure body.
Routine inspection focuses on connection leakage, union-thread wear, seal damage, internal erosion, branch-intersection washout, corrosion, cracking, deformation and unreadable markings.
Common Failure Modes
Connection Leakage
Main causes include an incorrect seal, damaged union end, insufficient makeup, mismatched figure, corrosion, erosion and external pipe loading.
Rapid Elbow Erosion
Main causes include high velocity, high proppant concentration, compact bend radius and extended pumping duration.
Branch-Intersection Washout
Main causes include direct flow impingement, abrupt tee geometry, high solids loading and bore mismatch.
Cracking or Permanent Deformation
Main causes include pressure above rating, unsupported piping, excessive external load, mechanical impact and material damage.
Affected fittings are isolated, depressurized, removed from service, inspected and replaced before the manifold returns to operation.
How to Select the Correct Integral Fitting
- Select the fitting type.
- Confirm nominal size.
- Confirm rated working pressure.
- Confirm internal bore.
- Confirm connection figure.
- Define male and female port orientation.
- Define branch angle and centerline dimensions.
- Select Long-Sweep or compact geometry.
- Select Hammer Union, threaded or butt-weld ends.
- Define Standard, Low-Temperature or H₂S Service.
- State the operating-temperature range.
- State the service fluid and solids content.
- Confirm material-class requirements.
- Confirm NDE, testing and documentation requirements.
Frequently Asked Questions
What sizes does GPE manufacture?
GPE manufactures 2, 3 and 4 in High-Pressure Integral Fittings.
What pressure range is available?
The manufacturing range covers 3,000 to 20,000 psi / 21 to 140 MPa.
What types are available?
GPE manufactures elbows, tees, crosses, laterals, wyes, Y-blocks, reducers, crossovers and customized multi-port fittings.
What is the difference between an Integral Fitting and a welded fitting?
An Integral Fitting uses one integrated pressure body and reduces branch welds and leak paths. A fabricated fitting joins multiple pipe sections by welding.
What is the difference between Long-Sweep and block elbows?
Long-Sweep elbows reduce turbulence, pressure loss and localized erosion. Block elbows reduce installation dimensions where space is limited.
Which fitting is used to divide flow?
A tee, lateral, Wye or Y-block divides flow depending on the required branch angle and hydraulic layout.
Which fitting reduces direct erosion at a branch?
An angled lateral or Wye produces a more gradual flow transition than a square 90° tee.
Which connection is used for 15K Frac Manifolds?
Fig 1502 Hammer Union connections are widely used in 15,000 psi Frac and Flow Iron systems.
Are 20K fittings available?
Yes. GPE manufactures engineered 20,000 psi configurations with approved pressure bodies, bores, wall thicknesses and connections.
Are H₂S and low-temperature fittings available?
Yes. GPE supplies controlled-hardness H₂S configurations and PL-class low-temperature designs.
Does API Spec 6A apply to every Integral Fitting?
No. API Spec 6A applies only when the fitting is supplied within its applicable equipment scope. Hammer Union Flow Iron fittings follow approved drawings, pressure class, service condition and project specifications.
Can GPE manufacture custom port arrangements?
Yes. GPE manufactures customized male and female port combinations, branch angles and centerline dimensions from approved drawings.
Can GPE manufacture replacement-compatible fittings?
Yes. GPE manufactures replacement fittings from existing drawings, dimensions, part numbers and physical samples.
What inspections are completed?
GPE completes material verification, UT, MPI, hardness, dimensional, wall-thickness, connection and hydrostatic pressure inspection.
Request a High-Pressure Integral Fitting Proposal
GPE manufactures complete Integral Fittings for Frac Manifolds, pump discharge lines, cementing units, well-test packages and high-pressure Flow Iron.
Our manufacturing range includes:
- 2–4 in nominal sizes
- 3,000–20,000 psi working pressures
- Elbows, tees, crosses, laterals and Wyes
- Reducers, crossovers and multi-port fittings
- Long-Sweep and compact block geometries
- Male and female Hammer Union combinations
- Threaded and butt-weld ends
- Standard, Low-Temperature and H₂S Service
- Material classes AA–EE for applicable projects
- Custom centerline dimensions and port layouts
- Complete material, NDE and pressure-test documentation
GPE also supplies complete pressure-control assemblies with Hammer Unions, Plug Valves, Check Valves, Swivel Joints and Emergency Relief Valves.
Request a Technical Quote:
https://gpepump.com/contact/
Email:
info@gpepump.com
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