Piping Systems Services

Marine Piping Systems and Solutions - TMT Group

Complete Piping Fabrication, Installation, and Testing Services

TMT Group’s piping division provides comprehensive end-to-end solutions for all marine piping systems, from initial fabrication through installation, testing, and commissioning. With extensive experience across 1,395+ vessel projects including oil tankers, LNG carriers, FPSO, jack-up rigs, and various specialized vessels, we deliver reliable piping systems that meet international maritime standards and ensure safe, efficient vessel operations.

Comprehensive Piping Services

Our piping capabilities cover the complete spectrum of marine piping requirements, encompassing diverse fluid systems essential for vessel operation, cargo handling, safety systems, and crew comfort.

Process Piping Systems

Critical systems for industrial and operational processes:

Cargo Transfer Systems

Crude oil and refined product piping for tankers
LNG and LPG cargo systems with cryogenic requirements
Chemical cargo piping with specialized materials
Ballast water system piping
Tank cleaning and gas freeing systems
Cargo heating coil installations
Vapor recovery systems
Loading and discharge manifold connections

Fuel Oil Systems

Heavy fuel oil (HFO) service systems
Marine diesel oil (MDO) and marine gas oil (MGO) systems
Fuel transfer and bunker systems
Fuel settling and service tank connections
Fuel heating and temperature control
Fuel filtration and purification systems
Overflow and vent piping
Fuel oil quick closing valves

Lubricating Oil Systems

Main engine lubricating oil systems
Auxiliary engine lube oil piping
Stern tube lubrication systems
Lubricating oil storage and transfer
Lube oil purifier connections
Oil mist detector piping
Used oil collection and drainage
Oil analysis sampling points

Ballast and Bilge Systems

Essential systems for vessel stability and drainage

Ballast Water Systems

Ballast tank filling and discharge piping
Ballast water treatment system (BWTS) integration
Ballast pump suction and discharge lines
Air release and overflow piping
Remote operated valve installations
Tank level and pressure monitoring connections
Cross-flooding systems for emergency
Stripping and drainage systems

Bilge Systems

Bilge collection piping from all compartments
Bilge pump suction manifolds
Oily water separator connections
Emergency bilge ejector systems
Bilge level alarm sensor piping
Overboard discharge piping with valves
Non-return and scum box installations

Ballast Water Management

UV treatment system piping
Electrolysis system installations
Filtration unit connections
Chemical dosing systems
Sampling and monitoring points
Control valve actuator piping
Backwash and cleaning systems

Fresh Water and Sanitary Systems

Systems providing potable water and waste management

Potable Water Systems

Fresh water storage tank connections
Pressure and hydrophore systems
Drinking water distribution throughout vessel
Galley and pantry water supply
Laundry water connections
Deck wash and hose stations
Emergency fresh water connections
Water maker and desalination plant piping

Sanitary Systems

Black water (sewage) collection systems
Grey water drainage from showers and laundries
Sewage treatment plant connections
Vacuum toilet systems
Holding tank piping
Sewage discharge pumps and piping
Overboard discharge with monitoring
Sampling points for compliance

Hot Water Systems

Calorifier and water heater connections
Hot water circulation loops
Temperature and pressure control
Expansion tank piping
Heat exchanger connections
Thermostatic mixing valves
Insulation and heat tracing where required

Fire Fighting Systems

Critical safety systems protecting vessel and crew

Main Fire Fighting System

Fire main distribution throughout vessel
Fire pump suction and discharge piping
Hydrant and hose station connections
International shore connection
Fire main sectional valves
Emergency fire pump systems
Pressure relief and drain valves
Remote emergency shutdown connections

Sprinkler Systems

Automatic sprinkler head installations
Sprinkler section valve manifolds
Pressure switches and alarm connections
Test and drain valve installations
Antifreeze systems for weather deck areas
Sprinkler control panels piping
Fusible plug installations

Specialized Fire Systems

CO2 fire suppression distribution piping
Foam system piping to tank decks
Water mist system installations
Halon replacement system piping
Dry powder system distribution
Emergency fire pumps and eductors
Portable extinguisher refill stations

Deluge and Water Spray Systems

Accommodation boundary protection
Hazardous area deluge systems
Helicopter deck fire protection
Engine room water spray systems
Manifold and valve packages
Fusible link and detection integration
Test and drain provisions

Hydraulic and Pneumatic Piping

Power transmission and control systems (also see dedicated page)

Hydraulic Systems

Steering gear hydraulic piping
Deck machinery hydraulic systems
Crane and winch hydraulic lines
Hatch cover hydraulic systems
Ramp and door hydraulic piping
Hydraulic power unit connections
High-pressure hose installations
Return and tank lines

Pneumatic Systems

Compressed air distribution
Control air systems
Starting air for engines
Instrument air piping
Service air outlets throughout vessel
Air compressor discharge lines
Air dryer and filter connections
Pressure reducing stations

Cooling Water Systems

Temperature control systems for machinery and equipment

Sea Water Cooling Systems

Main engine sea water cooling
Central cooling sea water systems
Emergency fire pump cooling
Air conditioning condenser cooling
Ballast pump seal water
Sea chest and inlet strainer piping
Overboard discharge piping
Marine growth prevention systems

Fresh Water Cooling Systems

Main engine jacket water cooling
Auxiliary engine cooling systems
Central cooling fresh water circuits
Radiator and heat exchanger connections
Expansion tank piping
Temperature control valve installations
Venting and filling connections

HVAC Cooling Systems

Chilled water piping for air conditioning
Air handling unit connections
Cooling coil piping
Expansion and buffer tanks
Air separators and purge points
Air compressor discharge lines
Circulating pump connections
Temperature and pressure control

Steam Systems

Heat and power distribution systems

Main Steam Systems

Boiler steam distribution
Steam turbine supply lines
Steam receivers and accumulators
Steam pressure reducing stations
Safety relief valve discharge piping
Steam tracing for fuel and cargo systems
Drain pot installations
Blow-down piping

Auxiliary Steam Systems

Galley steam supply
Laundry equipment steam
Heating coil steam supply
Steam-operated pumps and eductors
Steam cleaning stations
Whistle and horn steam supply
Condensate return systems

Compressed Gas Systems

Specialized gas distribution systems

Inert Gas Systems

Inert gas main distribution
Tank inerting and purging piping
Pressure and vacuum control
Non-return and deck seal installations
Gas sampling connections
Scrubber system piping
Pressure and oxygen monitoring points

Fuel Gas Systems (LNG Vessels)

Boil-off gas (BOG) handling
Fuel gas supply to engines
Gas valve unit connections
Pressure and temperature control
Emergency shutdown valve piping
Vent mast piping
Nitrogen purging systems

Piping Fabrication Capabilities

Prefabrication Services

Pipe Spool Fabrication

Cutting and beveling to specifications
Fitting assembly and tack welding
Spool welding in controlled environment
Radiographic or ultrasonic testing
Hydrostatic testing of spools
Surface preparation and painting
Identification marking and labeling
Packaging for transportation

Shop Fabrication Advantages

Controlled environment for quality
Optimal welding positions
Better access for testing
Reduced onboard hot work
Faster installation
Better quality control
Cost efficiency
Worker safety

Welding and Joining Methods

Welding Processes

GTAW (TIG) welding for root passes and exotic materials
SMAW (stick) welding for general applications
GMAW (MIG) welding for productivity
Orbital welding for consistent quality
Automated welding systems where applicable
Qualified welding procedures for all materials
Certified welders for each process

Mechanical Joining

Flanged connections per ASME/ANSI standards
Threaded connections where appropriate
Grooved mechanical couplings
Compression fittings for small bore
Quick-connect couplings
Expansion joints and flexible connectors
Specialized connections for specific systems

Material Selection and Supply

Piping Materials

Carbon steel (various grades and schedules)
Stainless steel (304, 316, duplex, super duplex)
Copper nickel (90/10, 70/30) for sea water service
Copper and brass for fresh water systems
HDPE and plastic piping for corrosive services
Special alloys for cryogenic and high-temperature
Material certificates and traceability

Fittings and Components

Butt-weld fittings (elbows, tees, reducers)
Socket-weld and threaded fittings
Flanges (weld neck, slip-on, blind, lap joint)
Valves (gate, globe, check, butterfly, ball)
Specialty valves (safety relief, pressure reducing)
Pipe supports, hangers, and guides
Insulation materials and cladding

Installation Services

Onboard Installation

Installation Process

Route survey and verification
Temporary support installation
Spool positioning and alignment
Field welding of connections
Valve and component installation
Pipe support installation
Penetration sealing (fire-rated, watertight)
Identification marking and labeling

Quality Control During Installation

Fit-up inspection before welding
Welding procedure adherence
Visual inspection of completed welds
Non-destructive testing as required
Dimensional verification
Cleanliness inspection
Documentation of all work

Pipe Support Systems

Support Types

Rigid supports for fixed points
Sliding supports for thermal expansion
Spring hangers for vertical movement
Constant effort hangers
Vibration isolation supports
Guide supports for controlled movement
Shock absorbers for dynamic loads
Anchor points for thrust restraint

Support Design Considerations

Load calculations including pipe, fluid, insulation
Thermal expansion and contraction
Vibration and shock loads
Accessibility for maintenance
Clearance requirements
Corrosion protection
Certification and approval requirements

Testing and Commissioning

Pressure Testing

Hydrostatic Testing

Test pressure per classification society rules
Test medium (fresh water, sea water, oil)
Test duration and observation
Pressure recording and documentation
Leak detection and rectification
Final drain and dry
Test certification

Pneumatic Testing

Compressed air testing where hydrostatic not feasible
Safety procedures for air testing
Gradual pressurization
Leak detection using soap solution or detector
Pressure holding test
Safe depressurization
Documentation

System Flushing and Cleaning

Pre-Commissioning Cleaning

Chemical cleaning for corrosion removal
Mechanical pigging for debris removal
Oil flushing for hydraulic systems
Pickling and passivation of stainless steel
Neutralization and disposal of cleaning agents
Cleanliness verification
System protection after cleaning

Commissioning Activities

System filling and venting
Pump alignment and commissioning
Valve operation verification
Control system testing
Flow and pressure verification
Performance testing
Documentation and handover

Inspection and Documentation

Quality Documentation

Material certificates and traceability
Welding procedure specifications (WPS)
Welder performance qualifications (WPQ)
Non-destructive testing reports
Pressure test certificates
Isometric drawings (as-built)
Valve and component data sheets

Classification Society Inspections

Witness of critical welding
NDT witnessing and approval
Pressure test witnessing
System completion inspections
Documentation review and approval
Certification issuance

Specialized Piping Capabilities

Cryogenic Piping (LNG/LPG)

Special RequirementsS

Low-temperature materials (stainless steel, aluminum)
Special impact testing of materials
Controlled welding procedures
Thermal insulation systems
Cold shrinkage calculations
Special supports and guides
Leak detection systems
Emergency shutdown provisions

High-Pressure Piping

Offshore Drilling and Production

High-pressure well control piping
Hydraulic power unit piping (10,000+ psi)
BOP control systems
Mud circulation systems
Special flanges and connections
Hydrostatic testing to extreme pressures
Special NDE requirements

Exotic Material Piping

Special Alloys

Titanium for corrosive environments
Monel for specific chemical applications
Inconel for high-temperature applications
Hastelloy for extreme corrosion resistance
Specialized welding procedures and qualifications
Material handling precautions
Special NDT techniques

Submarine Piping Systems

Naval and Subsea Applications

High-pressure air systems
Deep submergence piping
Penetration hull fittings
Special testing requirements
Classified work capabilities
Security clearances
Military specifications compliance

Safety and Quality Assurance

Safety Procedures

Hot Work Management

Welding and cutting permits
Fire watch requirements
Gas-free certificates
Ventilation requirements
Fire extinguisher placement
Emergency procedures
Post-work inspection

Confined Space Work

Entry permits and procedures
Atmospheric testing
Ventilation systems
Rescue equipment standby
Communication systems
Time limits and rotation
Emergency extraction procedures

Quality Management

ISO 9001 Compliance

Quality management system
Document control
Process control
Inspection and testing
Non-conformance management
Corrective and preventive actions
Management review

Classification Society Approval

Lloyd's Register approval
DNV-GL approval
American Bureau of Shipping (ABS)
Bureau Veritas (BV)
Other classification societies as required
Type approval of components
Survey and certification

Project Management

Planning and Scheduling

Work breakdown structure development
Resource planning and allocation
Material procurement planning
Critical path analysis
Progress tracking and reporting
Change management
Closeout and handover procedures

Client Communication

Regular progress meetings
Technical query management
Shop drawing submittals
Inspection and test plans
Photographic progress documentation
Problem escalation and resolution
Final documentation package delivery

Industries and Applications

Our piping services support all vessel types

Oil & Gas Tankers:
LNG/LPG Carriers:
Offshore Platforms:
Drilling Ship:
Container & Cargo Ships
Passenger Ships:
Naval Vessels:
Specialized Vessels:

Crude, product, chemical tankers
Cryogenic cargo systems, fuel gas systems
FPSO, FSO, jack-up rigs, semi-submersibles
High-pressure systems, process piping
Ballast, fuel, fresh water systems
HVAC, sanitary, potable water systems
Specialized systems, classified work
Dredgers, cable layers, pipe layers, research vessels

Why Choose TMT Group for Piping Systems?

Extensive Experience:
Skilled Pipefitters:
Comprehensive Services:
Quality Fabrication:
Material Expertise
Testing Capabilities:
Classification Society Approved:
Global Operations:

1,395+ vessels including complex piping systems
Certified craftsmen from TMSTI training facility
Fabrication, installation, testing, commissioning
Modern shop facilities with controlled conditions
Experience with all piping materials and special alloys
Complete pressure testing and commissioning
All major class societies
Projects across Asia, Europe, Middle East

Get Started with Your Piping Project

Our experienced piping team is ready to deliver reliable, high-quality piping systems for your vessel or offshore installation. Contact us today to discuss your requirements.