High-Pressure Cementing Piping Assembly
Product Overview
The High-Pressure Cementing Piping Assembly transfers high-pressure slurry and fluids between cementing pumps, manifolds, and wellheads during oil and gas well operations. Rated for working pressures up to 15,000 PSI, the assembly integrates swivel joints, pup joints, and integral unions to provide flexibility and pressure containment under severe dynamic loads and abrasive media. Manufactured in-house using forged alloy steel and strict non-destructive examination (NDE) protocols, these assemblies match standard oilfield interchangeability requirements.
Key Features
Pressure Integrity: Forged from high-strength alloy steel with uniform grain structure, eliminating internal casting defects to withstand high-pressure spikes and fluid hammer.
Operational Flexibility: Swivel joints incorporate hardened raceways and dual-row ball bearings to ensure smooth 360-degree rotation under full rated load without binding.
Erosion Resistance: Critical flow areas maintain controlled wall thickness and uniform inner diameters to minimize turbulence and abrasive wear from cement and proppant slurries.
Maintenance Efficiency: Hammer union ends allow rapid make-up and break-out in the field using standard striking tools, reducing rig-up and rig-down time between operations.
Technical Specifications
|
Parameter |
Specification Range |
|
Rated Working Pressure (RWP) |
5,000 PSI to 15,000 PSI |
|
Nominal Pipe Size (NPS) |
2 inch, 3 inch |
|
End Connections |
Fig 602, Fig 1502 Hammer Unions (Standard / Sour Service) |
|
Material Grades |
AISI 4130 / 4140 Alloy Steel (Heat-treated) |
|
Service Environment |
Standard Service (-29°C to 121°C) / Sour Service (NACE MR0175 / ISO 15156) |
|
Manufacturing Standards |
API Spec 16C, API Spec 6A, QMS ISO 9001 |
Applications
Primary & Remedial Cementing
Slurry discharge lines connecting high-pressure triplex pumps to cement heads.
Frac & Well Service Manifolds
High-pressure fluid distribution lines on cementing skids and pumping trucks.
Equipment Integration
OEM replacement piping packages for truck-mounted and skid-mounted cementing units.
Materials & Configuration
Forged Bodies: Pup joints and swivel elbows originate from heavy-wall alloy steel seamless tubes or closed-die forgings, avoiding welded pressure-containing seams where possible.
Union Subassemblies: Integrally forged male and female hammer union ends machined on CNC lathes to guarantee thread profile accuracy and sealing surface integrity.
Sealing Elements: Lip-type rubber seals reinforced with anti-extrusion brass rings, resistant to oil, gas, and cement additives up to rated temperatures.
Configuration Options: Available as single pup joints, 90-degree/45-degree swivel assemblies, multi-joint circulating loops, and customized manifold skids.
Quality Control & Manufacturing
In-House Processing: Raw material billets undergo strict chemical composition analysis via spectrometer prior to CNC multi-axis machining to maintain dimensional tolerance.
Pressure Testing: Every completed piping assembly undergoes hydrostatic shell testing and seat testing at 1.5x rated working pressure using calibrated water-jacket test benches.
Non-Destructive Testing (NDT): 100% Magnetic Particle Inspection (MPI) or Ultrasonic Testing (UT) performed on critical weld zones and high-stress wall transitions per API requirements.
Traceability: Heat numbers, serial numbers, and pressure ratings are stamped directly onto each assembly body, backed by full Material Test Reports (MTRs) and test charts supplied with shipment.
Customization & OEM
Length Variations
Pup joints custom-cut and machined to specific end-to-end lengths (e.g., 1-meter, 2-meter, 3-meter or custom imperial dimensions).
Connection Matching
Integration of non-standard thread forms, API flange adapters, or specific proprietary hammer union profiles upon request.
Surface Protection
Heavy-duty zinc plating, phosphating, or marine-grade epoxy coating systems applied for offshore and corrosive onshore environments.
Packaging & Shipping
Protection: Thread protectors and rubber sealing plugs installed on all union ends; impact-resistant plastic caps seal internal bores against moisture and debris during transit.
Crate Construction: Heavy-duty steel frames or ISPM 15-compliant heat-treated wooden crates secure assemblies to prevent shifting or bending during international ocean and land freight.
Documentation Pack: Commercial invoice, packing list, Certificate of Conformance, API license copy, MTRs, and hydrostatic test certificates included in waterproof packaging.
Frequently Asked Questions
Q: Are your unions fully interchangeable with standard FMC Fig 1502 components?
A: Yes. All hammer union ends are machined strictly to standard API union profiles, ensuring full mechanical and pressure seal interchangeability with existing field inventory.
Q: What is the difference between Standard Service and Sour Service assemblies?
A: Standard service assemblies utilize high-strength alloy steel for non-corrosive oilfield environments. Sour service assemblies comply with NACE MR0175, utilizing specially heat-treated materials and hardness control to resist sulfide stress cracking (SSC) in H2S environments.
Q: How do you verify the wall thickness of swivel joints after machining?
A: We use ultrasonic digital thickness gauges at multiple grid points across the elbow radius to ensure minimum wall thickness exceeds API design requirements prior to pressure testing.
Q: What documentation is provided with each shipment?
A: Every order includes individual hydrostatic test charts, material test reports (MTRs) traceable to heat numbers, inspection sheets, and a certificate of compliance.
Q: Can you supply complete manifold packages instead of individual piping assemblies?
A: Yes. We engineer and fabricate complete skid-mounted cementing manifolds, combining pup joints, swivel joints, plug valves, and pressure gauges according to P&ID schematics.
Q: What is the standard lead time for custom-configured piping assemblies?
A: Standard configurations from stock ship within 5 to 7 days. Custom lengths or specialized connection packages typically require 2 to 4 weeks depending on raw material availability and testing schedules.
Request a Quote
To receive a prompt and accurate technical proposal, please provide the following parameters in your inquiry:
Working Pressure & Size: (e.g., 10,000 PSI RWP, 3-inch nominal size)
End Connections: (e.g., Fig 1502 male x female, line pipe thread, or flanged)
Service Type: (Standard Service or Sour Service / NACE MR0175)
Configuration & Length: (Single pup joint length, swivel joint configuration, or complete assembly drawing)
Quantity Required:
Target Delivery Port / Destination:
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