STC Industrial Group
Our Engineering Services

Our Engineering Services

From turnkey fuel conversions to automated control systems and high-purity RO water treatment, we keep your plants operating at peak thermal efficiency.

Fuel Conversion Projects
Service Code: 01
Fuel Conversion Projects
01

Fuel Conversion Projects

With over 300 successful conversions across Pakistan, STC provides end-to-end fuel retrofit solutions. We engineer and install traveling chain grates, reciprocating step grates, external gasifiers, and fluidized combustion systems that enable your plant to break free from costly imported fossil fuels and gas load-shedding while slashing energy expenditures by up to 40%–60%.

Key Advantages & Performance ROI:

Up to 40%–60% reduction in monthly fuel expenditure
Payback period achieved in as little as 2 to 4 months
Engineered specifically for local Pakistani coal with up to 4% sulfur tolerance
Minimal plant downtime during turnkey retrofit execution
Turnkey Engineering Scope of Work:
• Site audit, baseline combustion analysis, and mechanical feasibility study
• Custom fabrication of combustion hearth, refractory arches, and grate systems
• Installation of forced draft (FD) and induced draft (ID) fans with VFDs
• Multi-cyclone dust collector and wet scrubber flue-gas cleaning integration
• Commissioning, burner calibration, and operator training
Boiler System Upgrades
Service Code: 02
Boiler System Upgrades
02

Boiler System Upgrades

Revitalize aging boiler infrastructure with STC’s advanced upgrade engineering. We retrofit high-efficiency cast-iron and finned-tube economizers, air pre-heaters (APH), automated blowdown controllers, and modern combustion geometry to increase efficiency by 8% to 15% and extend equipment lifespan.

Key Advantages & Performance ROI:

Increases overall boiler thermal efficiency by up to 15%
Cuts flue gas exit temperatures drastically, reclaiming wasted BTUs
Extends pressure vessel life and ensures strict compliance with boiler inspectorship
Minimizes thermal stresses and tube leakage incidents
Turnkey Engineering Scope of Work:
• Ultrasonic thickness testing (UT) and hydrostatic pressure testing
• Design and installation of spirally finned economizers and tubular APH systems
• Complete refractory overhaul and ceramic fiber insulation upgrading
• TDS-based continuous automatic blowdown control integration
• Feedwater de-aeration and heat scavenging optimization
Boiler Spares & Electromechanical Parts
Service Code: 03
Boiler Spares & Electromechanical Parts
03

Boiler Spares & Electromechanical Parts

Unplanned downtime is the enemy of industrial profitability. STC maintains a massive inventory of critical boiler spares, including high-grade seamless carbon steel tubes (ASTM A192/BS 3059), heat-resistant alloy grate bars, Mobrey magnetic water level controllers, safety valves, rotary airlocks, and feed pumps.

Key Advantages & Performance ROI:

24/7 rapid dispatch across Lahore, Karachi, Faisalabad, and nationwide
100% certified boiler quality materials with mill test certificates (MTC)
High thermal wear resistance and heat-treated cast alloy components
Direct compatibility with European, Japanese, and local boiler models
Turnkey Engineering Scope of Work:
• Seamless boiler tubes (OD 38.1mm, 50.8mm, 63.5mm, 76.2mm)
• Traveling chain grate links, drive sprockets, and reciprocating grate steps
• ASME Section I certified safety relief valves and blowdown valves
• High-pressure multi-stage boiler feed water pumps
• Refractory castables, ceramic blankets, firebricks, and high-temp seals
Industrial Machinery Design & Fabrication
Service Code: 04
Industrial Machinery Design & Fabrication
04

Industrial Machinery Design & Fabrication

Leveraging our state-of-the-art heavy engineering facility, STC designs and fabricates custom industrial process equipment tailored to exact production requirements. From 1.5 to 10 Ton/hr biomass pelleting plants, heavy-duty rotary dryers, high-RPM hammer mills to cyclone separators and belt conveyors, we build robust machinery made to last.

Key Advantages & Performance ROI:

Built with heavy-duty structural steel and wear-resistant liners
Precision dynamic balancing of rotating drums, shafts, and impellers
Custom engineered to match local raw materials (cow dung, bagasse, rice husk, stalks)
High operational reliability under continuous 24/7 industrial duty cycles
Turnkey Engineering Scope of Work:
• Rotary Drum Dryers with automated wood/biomass fired hot air furnaces
• High-efficiency Hammer Mills with specialized non-clogging screen designs
• Ring Die & Flat Die Biomass Pelleting Mills with heavy roller assemblies
• Heavy-duty industrial screw conveyors, bucket elevators, and belt conveyors
• Storage silos, surge bins, and automated packaging bagging units
Industrial Automation & Boiler Panels
Service Code: 05
Industrial Automation & Boiler Panels
05

Industrial Automation & Boiler Panels

Transform your mechanical boiler into an intelligent, autonomous energy asset. STC designs and builds custom electrical control consoles with Siemens/Schneider PLCs, color touchscreen HMIs, multi-loop PID controllers, and cloud telemetry for real-time monitoring of steam generation, fuel consumption, and emission parameters.

Key Advantages & Performance ROI:

Eliminates human operational error and ensures optimal air-to-fuel ratios
Fail-safe multi-stage safety interlocks for low water, high pressure, and flame failure
Variable Frequency Drives (VFD) cut fan and motor electrical consumption by 30%
Remote monitoring dashboard accessible via smartphone and control room
Turnkey Engineering Scope of Work:
• Custom IP55/IP65 steel enclosure fabrication with schematic documentation
• PLC & HMI programming (Siemens S7-1200, Delta, Schneider, Mitsubishi)
• Closed-loop three-element boiler feed water level control loops
• Oxygen (O2) trim automation and VFD draft fan synchronization
• IoT gateway integration for historical data logging and alarms
Water Treatment Solutions
Service Code: 06
Water Treatment Solutions
06

Water Treatment Solutions

Water quality is the single most critical factor in boiler longevity. Even 1mm of scale can reduce boiler heat transfer efficiency by 10% and cause catastrophic tube overheating. STC provides comprehensive water treatment regimens including industrial resin softeners, oxygen scavengers, scale inhibitors, and alkalizing amines.

Key Advantages & Performance ROI:

Prevents catastrophic tube blistering, rupture, and scale deposition
Maintains pristine heat transfer rates and saves thousands in fuel costs
Controls dissolved oxygen corrosion and pitting in economizer and steam drums
Includes complimentary monthly laboratory chemical analysis and site audits
Turnkey Engineering Scope of Work:
• Fully automatic twin-alternating ion-exchange water softening plants
• Chemical dosing systems with electronic metering pumps and tanks
• Supply of certified boiler chemicals (Antiscalants, Oxygen Scavengers, pH Boosters)
• Water testing kits, TDS meters, hardness testers, and conductivity monitors
• Thermal deaerator maintenance and spray nozzle replacement
RO & Demineralization (DM) Plants
Service Code: 07
RO & Demineralization (DM) Plants
07

RO & Demineralization (DM) Plants

For high-pressure boilers, pharmaceutical plants, and sensitive industrial processes, STC manufactures and installs heavy-duty Reverse Osmosis (RO) and Two-Bed/Mixed-Bed Demineralization (DM) plants. Our multi-stage filtration trains remove 99.5% of total dissolved solids, silica, and heavy metal ions.

Key Advantages & Performance ROI:

Delivers ultra-pure feed water with conductivity < 0.1 µS/cm for zero scaling
Protects expensive turbine blades from silica carryover and deposition
Equipped with automated CIP (Clean-In-Place) membrane washing systems
High water recovery rates up to 80% with low energy consumption
Turnkey Engineering Scope of Work:
• Pre-filtration trains: Multi-grade sand filters, activated carbon, and micron cartridges
• High-pressure multi-stage SS316 RO booster pumps and FRP membrane housings
• Dow / Hydranautics premium polyamide thin-film composite (TFC) membranes
• Cation, Anion, and Mixed Bed DM ion-exchange resin columns with acid/alkali regeneration
• Online conductivity, pH, and flow rate instrumentation
Industrial Equipment Supply
Service Code: 08
Industrial Equipment Supply
08

Industrial Equipment Supply

STC serves as a premier industrial supply partner for leading manufacturing conglomerates. We import and stock an extensive inventory of ASME/DIN certified gate valves, globe valves, thermodynamic steam traps, vortex steam flow meters, level gauges, pressure transmitters, and expansion joints from world-renowned manufacturers.

Key Advantages & Performance ROI:

Strict quality assurance with pressure hydro-test certificates for all valves
Huge local warehouse inventory for instant delivery and reduced lead times
Competitive direct-importer pricing with manufacturer warranties
Technical engineering guidance for accurate valve sizing and steam line design
Turnkey Engineering Scope of Work:
• Cast Steel & Forged Steel Class 150/300/600/800 Gate, Globe, Check, and Ball Valves
• Thermodynamic, Inverted Bucket, and Float-type high-pressure Steam Traps
• Vortex shedding digital steam flow meters with mass-flow temperature/pressure compensation
• Direct-acting and pilot-operated Pressure Reducing Valves (PRV)
• Stainless steel corrugated metallic expansion bellows and flexible joints
STC Brochure & Industrial Consultation
COMPREHENSIVE ENGINEERING LITERATURE

Ready to Modernize Your Industrial Boiler Systems?

Download our complete technical catalog, biomass pellet specification sheets, and local coal retrofit blueprints, or consult our senior engineering team directly.

ISO Quality Standards
ASME Section I Compliance
24/7 Hotline: +92 321 8283946