Key Performance Features
15,000 PSI High-Pressure Containment
Designed for high-pressure oil and gas operations, maintaining structural integrity up to 15,000 PSI for hydraulic fracturing and well stimulation applications.
Precision Forged Steel Construction
Manufactured from fully killed forged alloy steel with optimized grain structure, providing high strength, impact toughness, and fatigue resistance.
Advanced Sealing System
Equipped with metal-to-metal seals plus elastomeric O-rings/lip seals to ensure reliable leak prevention under pressure fluctuations and temperature changes.
Severe Environment Corrosion Resistance
Available with zinc phosphating, ENP plating, and thermal spray coatings for enhanced protection against corrosion, chemicals, and abrasive fluids.
API Compliant & Interchangeable
Manufactured according to API standards and international oilfield specifications, compatible with major flowline and manifold systems.
OEM / ODM Customization
Supports custom dimensions, pressure ratings, NACE MR0175 sour service requirements, thread types (LP/NPT/Hammer Union), and flange connections.
Technical Specifications
|
Parameter |
Specification / Capability |
|
Product Name |
High-Pressure Flowline Coupling / Pipe Connector |
|
Primary Applications |
Hydraulic Fracturing, Cementing, Well Intervention, Acidizing, Flowline Manifolds |
|
Working Pressure Ratings |
5,000 PSI, 10,000 PSI, 15,000 PSI (Up to 103 MPa) |
|
Material Availability |
AISI 4130 Forged Alloy Steel, 316/316L Stainless Steel, Super Duplex, Carbon Steel |
|
Manufacturing Process |
Closed-Die Precision Forging + Multi-Axis CNC Machining |
|
Connection Types |
Threaded (NPT, LP), Flanged (API 6A), Hammer Union Ends (Fig 1502/1002), Butt-Weld |
|
Size Range |
1" through 6" (Custom large-bore dimensions available upon request) |
|
Sealing Mechanism |
Metal-to-Metal Seal + Primary Elastomeric O-Ring / Buna-N / Viton |
|
Testing & Quality Control |
100% Hydrostatic Proof Testing, Magnetic Particle Inspection (MPI), Ultrasonic Testing (UT) |
|
Industry Standards |
API Spec 6A / 16C, NACE MR0175 / ISO 15156, ISO 9001:2015 |
Core Field Applications
Hydraulic Fracturing (Frac Stacks & Manifolds): Vital connectors for high-pressure iron, missile manifolds, cross-overs, and frac pumper connections.
Oil & Gas Well Servicing: Extensively used in high-pressure cementing lines, acidizing manifolds, well testing setups, and snubbing/coiled tubing intervention units.
High-Pressure Pipeline Systems: Secure line connections for long-distance, high-pressure liquid and gas transport in midstream networks and petrochemical facilities.
Chemical Injection & Industrial Systems: Heavy-duty performance in chemical processing plants, high-pressure industrial wash systems, and specialized offshore subsea/topside piping.
Rigorous 6-Step Manufacturing Process
To guarantee uncompromised quality and field safety, every single high-pressure coupling passes through our integrated manufacturing and inspection workflow:
Raw Material Verification
Mill test certificates (MTC) are verified; steel bars undergo chemical analysis and ultrasonic internal flaw detection before cutting.
Precision Closed-Die Forging
Forging optimizes grain flow patterns, significantly increasing the mechanical resistance to sudden impact and high-vibration stresses.
Advanced CNC Machining
High-precision multi-axis CNC machines guarantee tight tolerances, flawless thread pitch, and perfect sealing face geometry.
Controlled Heat Treatment
Computerized quenching and tempering processes achieve the exact hardness (HRC/HB) and tensile properties required by API and NACE standards.
Anti-Corrosion Surface Treatment:
Industrial phosphating or plating creates a durable barrier against corrosion and minimizes thread galling during makeup.
Hydrostatic & Non-Destructive Testing (NDT)
Units undergo mandatory NDT (MPI/UT) and are pressure-tested to ensure 100% structural integrity under maximum load.
Quality Assurance
Shandong Yukos Petroleum Equipment Co., Ltd. operates a fully integrated, transparent quality management ecosystem designed to satisfy stringent third-party oilfield audits:
ISO 9001:2015 Certified Manufacturing Facility
Traceable Manufacturing Data: Complete heat-number traceability from raw steel melt to final packed product.
Comprehensive Document Packages: Provided with EN 10204 3.1 Material Certificates, NDT Reports, Hydrostatic Pressure Test Certificates, and Certificate of Conformance (CoC).
Why Partner with Shandong Yukos?
Scalable Production Across 35,000㎡ Factory
Equipped with over 80 sets of high-precision CNC machining centers, automated forging lines, and heavy-duty testing bays to handle large-volume supply contracts efficiently.
Advanced OEM, ODM & White-Label Capabilities
Whether you require custom branding, specific thread geometries, or non-standard dimensions, our engineering team can produce parts directly from your blueprints or CAD files.
Frequently Asked Questions
Q: What is the maximum working pressure of your couplings?
A: Our couplings support up to 15,000 PSI (103.4 MPa) working pressure. Each batch is hydrostatically tested at 1.5 times the rated pressure to ensure safety and leak-free performance.
Q: Are your couplings suitable for sour service (H₂S)?
A: Yes. We offer NACE MR0175 / ISO 15156 compliant sour service couplings using controlled hardness alloy steel or stainless steel materials.
Q: Are your couplings compatible with international brands?
A: Yes. They are manufactured according to API, NPT, LP, and Hammer Union (Fig 1502/1002) standards for easy interchangeability.
Q: What materials are available?
A: Materials include AISI 4130/4140 alloy steel, 316L stainless steel, carbon steel, and duplex alloys, with full heat number traceability.
Q: Do you provide OEM/ODM and custom services?
A: Yes. We offer custom dimensions, laser marking, logo engraving, special threads, and customized packaging.
Q: What is your MOQ?
A: Standard products support flexible trial orders. Custom products depend on material, design, and production requirements.
Q: What is the delivery time for bulk orders?
A: Standard orders take 15–30 days. Customized OEM orders usually require 45–60 days.
Q: How are couplings packaged for shipping?
A: Products are coated with anti-rust oil, fitted with thread protectors, and packed in export-grade wooden crates or reinforced pallets.
Q: Do you support third-party inspection?
A: Yes. We accept inspections from SGS, TUV, BV, and DNV before shipment.
Q: How can I request a quotation?
A: Send your drawings, specifications, quantities, and application details. Our engineering team will provide technical feedback and quotation within 12 hours.
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