products
Piping Skids
Piping Skids
Piping Skids
Piping Skids
Piping Skids
Piping Skids
Piping Skids
Piping Skids
Piping Skids
Piping Skids
Piping Skids
Piping Skids
Keywords: Modular Process Skid / Piping Skid
Standards: ASME B31.3 (Piping), AISC & AWS D1.1 (Structure)
Integration Scope: Piping, Valves, Instruments, Pumps & E&I
Testing & Inspection: 100% NDT, Hydrostatic Test & Full FAT
Base Frame Material: Carbon Steel (ASTM A36 / Q235B) with Heavy-duty Coating
Shipping & Dimensions: Customized to fit 40ft OT/FR Containers

Bestar Steel provides fully integrated Pipe Skids and modular process units for the oil, gas, petrochemical, and power industries. Unlike bare pipe spools, our skids are mounted on structural steel frames and integrate piping, valves, instruments, pumps, and electrical systems. Backed by our advanced prefabricated piping capabilities, we ensure precise fit-up and zero-leakage performance. Engineered for high-pressure and corrosive environments, they guarantee "plug-and-play" installation, significantly reducing on-site welding and commissioning time.


Technical Specification of Piping Skids

Parameter

Specification Details

Design Code

ASME B31.3 (Process Piping), ASME B31.1 (Power Piping)

Structural Code

AISC (Steel Construction), AWS D1.1 (Structural Welding)

Design Pressure

Up to 10,000 psi (Customized per project)

Design Temperature

-46°C to 450°C (-50°F to 842°F)

Piping Material

Carbon Steel (A106 Gr.B), Alloy Steel (A335 P11/P22), Stainless Steel (A312 TP304/316)

Structural Frame

Carbon Steel (ASTM A36 / Q235B)

Surface Preparation

Sandblasting to Sa 2.5

Painting System

Epoxy / Polyurethane (240 - 320 microns DFT)

Flange Standards

ASME B16.5 (up to 24"), ASME B16.47 (26" - 60")

Electrical & Instrumentation

IEC, NEC, ATEX (Explosion-proof for hazardous areas)

Testing & Inspection

100% NDT (RT/UT/PT/MT), Hydrostatic Test, Full FAT

Shipping Dimensions

Optimized to fit 40ft OT (Open Top) / FR (Flat Rack) containers


Material Grade of Pipe Skids

1. Piping Materials

Carbon Steel: ASTM A106 Gr.B, A53 Gr.B, A333 Gr.6 (For low-temperature service).

Alloy Steel: ASTM A335 P11, P22, P91 (For high-temperature/high-pressure).

Stainless Steel: ASTM A312 TP304/304L, TP316/316L.

Duplex Stainless: S31803 (2205), S32750 (2507) for highly corrosive media (H2S/CO2).

Fittings & Flanges: ASTM A234 WPB, A182 F11/F22/F304/F316, A105.

2. Structural Steel (Skid Base Frame)

Standard Frame: ASTM A36, Q235B, Q355B.

Heavy-Duty/Offshore Frame: ASTM A572 Gr.50 (High-strength low-alloy).

Lifting Padeyes: A516 Gr.70 or A36 (Stress-relieved for heavy lifting).

3. Valves & Instrumentation

Valve Bodies: ASTM A216 WCB (Carbon), A351 CF8M (Stainless).

Instrument Tubing: ASTM A269 TP316 (Stainless steel).


Core Skid Types 

1. Metering Skids 

Function: Designed for precise measurement and custody transfer of crude oil, natural gas, or liquids.

Key Components: Coriolis/Orifice flow meters, flow computers, sampling systems, and control valves.

Application: Upstream wellheads, pipeline transmission, and refinery terminals.


2. Pressure Regulating Skids 

Function: Reduces and regulates high-pressure gas to a stable, safe downstream pressure.

Key Components: Pressure regulators, safety shut-off valves (SSV), relief valves, and filters.

Application: City gate stations, natural gas distribution networks, and industrial gas supply.


3. Chemical Injection Skids 

Function: Accurately doses and injects chemical additives (corrosion inhibitors, methanol, biocides) into the process stream.

Key Components: Metering pumps, chemical storage tanks, flow control valves, and pressure gauges.

Application: Oil & gas pipelines (preventing hydrate formation), water treatment, and refining.


4. Manifold Skids 

Function: Centralizes the gathering, distribution, and routing of fluids from multiple sources into a single flow.

Key Components: Heavy-duty valves, headers, choke manifolds, and pressure transmitters.

Application: Oil & gas wellhead gathering, production testing, and waterflood distribution.


5. Pump Skids 

Function: Provides a pre-packaged, skid-mounted fluid transfer solution for high-pressure or high-volume pumping.

Key Components: Centrifugal/Positive Displacement (PD) pumps, electric motors/diesel engines, control panels, and base frames.

Application: Crude oil transfer, boiler feedwater, firewater systems, and pipeline boosting.


6. Filtration & Separation Skids 

Function: Removes solid particles, water, or impurities from liquid or gas streams to protect downstream equipment.

Key Components: Filter separators, coalescers, mesh pads, and differential pressure gauges.

Application: Natural gas processing, produced water treatment, and fuel gas conditioning.


Quality Control & Testing

NDT: 100% RT/UT for pipe butt welds; PT/MT for structural welds.

Pressure Testing: Hydrostatic and pneumatic testing per ASME B31.3.

Lifting Test: Structural load testing of the skid frame to ensure safe crane lifting.

E&I Testing: Loop testing, continuity testing, and instrument calibration.

FAT (Factory Acceptance Test): Complete FAT procedure and report with client witness (SGS/BV/TUV available).


Why Choose Bestar Steel?

1) Full Integration: From bare pipes to fully functional "plug-and-play" modules.
2) Strict Compliance: ASME, AISC, and ATEX certified processes.
3) Zero-Leakage Guarantee: Backed by 100% NDT and rigorous FAT.
4) Global Export Experience: Optimized packaging designed for international sea freight.
5) Fast Delivery: Streamlined fabrication to meet tight project schedules.


Standards & Compliance of Piping Skids

1. Piping & Process Design 

ASME B31.3: Process Piping (for petrochemical & oil/gas).

ASME B31.1: Power Piping (for power generation plants).

ASME Section VIII Div. 1: For pressure vessels or pressurized components within the skid.


2. Structural & Welding 

AISC (American Institute of Steel Construction): For structural steel frame design.

AWS D1.1: Structural Welding Code (for skid base frames and supports).

ASME Section IX: Welding, Brazing, and Fusing Qualifications (WPS/PQR/WPQ for all pipe and structural welds).


3. Electrical & Instrumentation (E&I)

IEC / NEC: For electrical wiring, control panels, and junction boxes.

ATEX / IECEx: For explosion-proof equipment in hazardous areas (Zone 1 / Zone 2).


4. Testing & Inspection 

API 598: Valve Inspection and Testing.

ASME B31.3 Chapter VI: Inspection, Examination, and Testing (Hydrostatic & Pneumatic).

NDT Standards: ASTM E709 (Magnetic Particle), ASTM E94 (Radiographic), ASTM E165 (Liquid Penetrant).


5. Surface Protection 

SSPC-SP10 / NACE No. 2: Near-White Blast Cleaning (Sa 2.5).

ASTM A123: Standard Specification for Zinc (Hot-Dip Galvanized) Coatings.

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Our Fabrication Process of Pipe Skids


1.Engineering & 3D Modeling: Detailed design, pipe stress analysis, and 3D modeling to avoid clashes.

2.Material Procurement: Sourcing certified materials with full traceability (EN 10204 3.1/3.2).

3.Fabrication & Welding: Precision cutting, fit-up, and welding by ASME IX certified welders.

4.Assembly & Integration: Mounting piping, valves, pumps, and instruments onto the structural frame.

5.Testing & FAT: Comprehensive inspection, pressure testing, and factory acceptance testing.

6.Packing & Delivery: Sea-worthy packing and optimized loading plans.


Surface Treatment & Packing of Pipe Skids

Surface Preparation 

Sandblasting: SSPC-SP10 / NACE No. 2 / Sa 2.5 (Near-White Blast Cleaning) to ensure maximum coating adhesion.

Edge Treatment: All sharp edges rounded to prevent coating failure.

Painting & Coating System 

Standard System: High-build Epoxy Primer + Intermediate Epoxy + Polyurethane Topcoat.

Dry Film Thickness (DFT): 240 - 320 microns (Customizable per project specs).

Special Coatings: Hot-Dip Galvanized (ASTM A123) for structural frames, or Fireproofing (Intumescent paint).

Color: RAL color codes customized according to client requirements.


Packing & Protection 

Flange Protection: All pipe flanges protected with heavy-duty plastic caps to prevent mechanical damage.

Instrument Safety: All gauges, transmitters, and control panels securely boxed or wrapped in shock-absorbing materials.

Moisture Control: Desiccant (Silica gel) added to enclosed boxes and panels to prevent condensation during sea transit.

Tagging: Stainless steel tags or weather-resistant labels with detailed item IDs and drawing numbers.


Shipping & Loading 

Packing Type: Sea-worthy packing suitable for long-distance ocean freight and multi-modal transport.

Marking: Lifting points clearly marked; nameplate with skid ID, gross weight, and center of gravity.

Container Optimization: Skid dimensions strictly controlled to fit 40ft OT (Open Top) or FR (Flat Rack) containers, maximizing shipping efficiency.



1. What is a Pipe Skid, and how does it differ from a Pipe Spool?

A Pipe Spool is an assembly of pipes, fittings, and flanges welded together. A Pipe Skid is a fully integrated modular unit where the prefabricated piping is mounted on a structural steel frame, complete with valves, pumps, and instrumentation. Skids are designed for "plug-and-play" installation, drastically reducing on-site work.


2. Can you customize the skid design according to our specific project requirements?

Yes. We provide 100% customized solutions. Our engineering team can work from your P&ID, 3D models, or technical specifications to design and fabricate the skid to meet your exact pressure, temperature, and dimensional requirements.


3. What testing and certification do you provide before shipment?

Every skid undergoes strict quality control. We provide 100% NDT (RT/UT/PT) for welds, Hydrostatic/Pneumatic testing, and a comprehensive FAT (Factory Acceptance Test). Third-party inspection (SGS, BV, TUV) and EN 10204 3.1/3.2 material certificates are available upon request.


4. How do you ensure the skids fit into shipping containers?

We optimize the skid dimensions during the design phase to ensure they fit standard 40ft Open Top (OT) or Flat Rack (FR) containers, minimizing ocean freight costs and ensuring safe transport.


5. What is the typical lead time for fabrication and delivery?

Lead time depends on the complexity and quantity of the skids. Typically, it takes 30 to 60 days for engineering, material procurement, fabrication, and FAT testing. We offer streamlined processes to meet urgent project schedules.


6. Can you integrate Electrical & Instrumentation (E&I) and control systems?

Absolutely. We offer full integration of E&I systems, including junction boxes, control panels, and explosion-proof (ATEX/IECEx) instruments, ensuring the entire skid is ready to operate once connected to your main facility.


7. What materials can be used for the piping and the structural frame?

For piping, we use Carbon Steel (A106 Gr.B), Alloy Steel (A335 P11/P22), and Stainless Steel (304/316, Duplex). For the structural base frame, we typically use ASTM A36 or Q235B carbon steel with heavy-duty anti-corrosion coatings.


8. Do you provide complete documentation for EPC project handover?

Yes. We provide a full MRB (Manufacturing Record Book) including material certificates, WPS/PQR, NDT reports, FAT procedures, as-built drawings, and O&M manuals.


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