Welding & Structural Steel Fabrication Contractor in Karachi
Advanced Engineering & Construction delivers structural steel fabrication, on-site welding, and MS metalworks in Karachi under PEC Licence No. 17347, Category C4/E, with mechanical specialization codes ME01, ME02, ME04, ME05, ME06, and ME07(v) General Mechanical Works Only. AEC executes fabrication and welding as a licensed construction contractor — not as a welding shop or on-demand repair service. The scope covers structural MS frame fabrication, steel shed erection, staircase and railing fabrication, on-site structural welding, and miscellaneous metalworks delivered as part of commercial, institutional, and industrial building contracts across Karachi. Clients include institutional bodies under NED University of Engineering & Technology, the Education & Works Department, SITE, and Pakistan Works & Development (PWD) — organizations that require documented contractor credentials before awarding any fabrication or metalworks scope.
AEC’s fabrication scope sits within the construction contractor model: each project begins with a defined scope and structural drawing, proceeds through fabrication and quality inspection, and concludes with on-site erection and documented handover. This is not a workshop-to-delivery operation. AEC mobilizes on site, coordinates with civil and finishing trades, and integrates steel fabrication works into the overall construction programme. For developers, project managers, and procurement officers who need a PEC-licensed fabrication contractor in Karachi, this is the correct capability profile.
Structural Steel Fabrication in Karachi
Structural steel fabrication covers the cutting, welding, and assembly of mild steel sections that form the primary or secondary load-bearing framework of a building. AEC fabricates structural steelwork for commercial office buildings, industrial and warehouse sheds, institutional facilities, and mixed-use developments across Karachi. Fabrication is carried out using MS hollow section, MS I-beam, MS channel, MS angle, and MS flat bar sourced from verified steel suppliers in Korangi Industrial Area and Sindh Industrial Trading Estate (SITE) — Karachi’s two principal structural steel supply zones. Material is procured to confirmed structural specifications, not substituted based on availability.
The fabrication sequence AEC follows on every structural project is fixed and non-abbreviated. Structural drawings or sketches are reviewed and all dimensions are verified against confirmed site measurements before any cutting begins. Material is cut to size using disc cutters or oxy-fuel cutting for heavier sections. Members are tack-welded into position, checked for squareness and dimensional accuracy, and then fully welded using MIG or SMAW arc welding depending on section thickness and joint type. Completed members are visually inspected for weld quality — full penetration on load-bearing connections, correct weld profile, absence of porosity or undercut — before primer coat is applied. Members are then transported to site and erected in sequence with the construction programme.
The most common failure point in structural steel work on Karachi construction sites is incomplete weld penetration at base plate connections and beam-to-column joints — a defect that is invisible on the surface but compromises structural capacity under load. AEC’s inspection protocol addresses this at each joint before any member is released for erection. This level of quality control is a standard requirement on institutional project sites; it is not standard practice at unlicensed welding workshops.
Structural Fabrication Scope — What AEC Delivers
| Scope Item | Application |
|---|---|
| MS portal frame and mono-pitch frames | Industrial sheds, warehouse structures, factory buildings |
| MS roof trusses and purlins | Shed roofing, commercial canopy structures |
| Structural columns and base plates | Multi-storey steel frame buildings, mezzanine levels |
| Staircase stringers, treads, and landings | Commercial and institutional buildings, multi-storey residential |
| MS and SS handrails and balustrades | Stairs, mezzanine edges, balconies, open-well stairwells |
| Pergola and car shade structures | Commercial and institutional parking, outdoor covered areas |
| Steel lintel bars above openings | Brick masonry construction — standard AEC construction scope |
| Miscellaneous site metalworks | MS frames, brackets, supports, pipe sleeves, anchor bolts |
Steel Shed Fabrication & Erection in Karachi
Steel shed fabrication is one of the most common structural steel scopes on commercial and industrial construction projects in Karachi. A portal frame or mono-pitch shed provides large clear spans without intermediate columns — a structural requirement for warehouses, factories, car workshops, equipment storage facilities, and institutional maintenance yards. AEC designs shed frame geometry based on span, height, and roof pitch, then fabricates the primary frame from MS hollow section or built-up I-section depending on span and loading. Secondary members — purlins, girts, knee braces — are fabricated from MS C-channel or Z-section and fixed to the primary frame on site.
Roofing on AEC-fabricated sheds is typically profiled steel sheet — 0.50mm or 0.70mm galvanized corrugated or trapezoidal profile — fixed with self-drilling screws to the purlin line. Fibre cement or polycarbonate translucent panels are incorporated at ridge or sidewall positions where daylighting is required. AEC coordinates roofing installation directly with the shed frame erection so penetrations, ridge flashings, and end-wall cladding are completed in a single mobilization rather than as separate return visits. This sequencing reduces weather exposure of the structural frame and eliminates the coordination gap between fabrication and roofing trades that causes most shed construction delays on Karachi industrial sites.
On-Site Structural Welding for Construction Projects
On-site structural welding on a building project requires skills and site management protocols that are entirely different from workshop fabrication. Welders work in fixed and positional joints — overhead, vertical, and horizontal — at height, within an active construction site, and alongside other trades. AEC provides on-site welding as part of construction contracts, supplying certified welders, welding equipment, consumables, and site safety compliance including hot work area control and spatter protection for adjacent civil finishes.
On-site welding scope on a typical AEC construction project covers: column base plate welding after structural section erection, beam-to-column connection welding on multi-storey frames, staircase installation and railing welding at each floor level, MS lintel placement and welding above window and door openings, and miscellaneous structural connections specified on the working drawing. AEC holds PEC mechanical specialization codes ME01, ME02, ME04, ME05, ME06, and ME07(v) — the credentials required to carry out mechanical fabrication and installation works on construction contracts regulated by the Pakistan Engineering Council. For government departments, universities, and regulated institutional clients, these codes are a procurement requirement before any fabrication contractor can be engaged.
Steel Fabrication Cost in Karachi
Structural steel fabrication in Karachi is priced on three bases depending on scope type: per kilogram of fabricated steel for structural frame work, per running foot for staircase and railing fabrication, or as a lump-sum package for defined structures such as a complete shed frame or pergola. The table below reflects Karachi market rate context for 2025 to 2026. These are indicative ranges; final cost requires structural drawings or a confirmed scope description and site inspection.
| Scope | Pricing Basis | Indicative Rate Range |
|---|---|---|
| Structural MS fabrication — general | Per kilogram fabricated and erected | Rs. 200–380 per kg |
| MS portal frame shed — primary frame only | Per sq ft of covered plan area | Rs. 130–280 per sq ft |
| MS staircase — per flight | Lump sum per flight (stringer + treads + landing) | Rs. 65,000–180,000 per flight |
| MS handrail and balustrade | Per running foot installed | Rs. 350–900 per running foot |
| MS pergola or car shade frame | Per sq ft of covered area | Rs. 160–320 per sq ft |
| Structural section — hot-dip galvanized finish | Additional per kg vs bare primed | Rs. 70–130 per kg |
| Structural section — powder-coated finish | Additional per sq ft of surface area | Rs. 60–110 per sq ft |
Four variables move fabrication cost above the base rate. Section weight and complexity: heavier built-up sections require more cutting time, more weld volume, and more material per linear metre than standard hollow sections, raising both material and labour costs. Site access and erection height: crane hire or mobile elevated work platform cost applies for erection above five metres and is priced separately from fabrication. Finish specification: bare primed steel is the base rate; hot-dip galvanized, powder-coated, or epoxy-painted finishes add cost per the table above. Drawing availability: fabrication from confirmed structural drawings is priced lower than fabrication from site sketches, which requires AEC to produce shop drawings before cutting begins. Contact AEC at +92-332-2066882 or Advancedengineeringc@gmail.com to discuss your scope and arrange a site visit for written quotation.
Why AEC for Steel Fabrication & Welding in Karachi
AEC holds PEC Licence No. 17347, Category C4/E with mechanical specialization codes ME01, ME02, ME04, ME05, ME06, and ME07(v) General Mechanical Works Only — issued under the Construction and Operation of Engineering Works Bye-laws 1987. These codes authorize AEC to carry out mechanical fabrication and installation works on construction projects regulated by the Pakistan Engineering Council. No welding workshop, fabrication yard, or unlicensed metalwork contractor operating in Karachi holds or can hold PEC specialization codes. For any fabrication scope on a government department project, a university building, a regulated institutional facility, or a commercial development where the developer requires a licensed contractor, AEC is the only correctly credentialed option in Karachi at its project scale.
AEC has delivered fabrication and structural works within construction contracts for NED University of Engineering & Technology, SITE, Education & Works Department, and Pakistan Works & Development (PWD). These clients conduct formal contractor verification before engagement. Their project documentation requirements — scope confirmation, material certificates, weld inspection records, and handover certificates — are met as standard on every AEC project. A fabrication shop cannot meet these requirements. A PEC-licensed construction contractor can.
AEC carries 26 PEC specialization codes under a single licence spanning civil, electrical, and mechanical works. This means structural steel fabrication can be contracted alongside grey structure civil works, electrical installation, and interior finishing as a single contract package. For a commercial developer building a warehouse with an office block, site boundary wall, electrical supply, and internal fit-out, AEC holds the credentials and project management capacity to deliver all scopes under PEC Licence No. 17347 up to Rs. 200 million in total construction cost. This single-contractor capability eliminates the coordination overhead that multi-subcontractor arrangements create on Karachi construction sites.
Call to Action
To discuss structural steel fabrication, MS frame works, on-site welding, or shed erection requirements in Karachi, contact AEC directly:
Advanced Engineering & Construction
Office 34, Decent Towers, Block 15, Gulistan-e-Johar, Karachi
+92-332-2066882
Advancedengineeringc@gmail.com
Call or WhatsApp during business hours with your project scope or structural drawings. AEC will confirm the correct fabrication specification, arrange a site visit where required, and issue a written quotation with scope, material specification, and programme.
Frequently Asked Questions
What PEC codes does AEC hold for welding and fabrication works?
AEC holds PEC Licence No. 17347, Category C4/E with mechanical specialization codes ME01, ME02, ME04, ME05, ME06, and ME07(v) General Mechanical Works Only. These codes cover mechanical fabrication, installation, and erection works on construction projects regulated by the Pakistan Engineering Council. They are a mandatory requirement for fabrication scope on government, university, and regulated institutional building contracts in Pakistan. No welding shop or fabrication workshop in Karachi holds equivalent credentials.
What is the difference between a welding shop and a PEC-licensed fabrication contractor?
A welding shop fabricates and installs metalwork without formal project management, documented inspection, or regulatory credentials. A PEC-licensed fabrication contractor operates under a registered licence, follows a structured project delivery process — scope confirmation, fabrication, inspection, erection, handover — and can legally execute works on government and institutional construction contracts. For any project where the client requires a licensed contractor, a welding shop cannot be engaged regardless of price or availability.
How much does structural steel fabrication cost per kilogram in Karachi?
Structural MS fabrication in Karachi costs between Rs. 200 and Rs. 380 per kilogram of fabricated and erected steel as a general market range for 2025 to 2026. This range covers cutting, welding, priming, transport to site, and erection. Sections requiring hot-dip galvanizing, powder coating, or epoxy paint finish are priced higher. Final cost per kilogram depends on section complexity, weld volume per member, finish specification, and site erection conditions. A written quotation requires confirmed structural drawings or a detailed scope description.
Can AEC fabricate and erect a complete steel shed in Karachi?
AEC fabricates and erects complete steel shed structures in Karachi for commercial, industrial, and institutional clients. Scope covers primary frame fabrication — portal or mono-pitch — secondary members, roofing, and end-wall cladding. AEC coordinates all trades within the shed construction package including civil foundation works, which fall under AEC’s civil specialization codes BC01, BC02, CE08, and CE09. A single-contractor arrangement for shed foundation and structural erection reduces programme risk and eliminates the foundation-to-frame interface disputes that commonly delay shed projects when civil and steel contractors are separate.
Does AEC carry out staircase fabrication for multi-storey buildings in Karachi?
AEC fabricates and installs MS staircases for commercial, institutional, and residential buildings across Karachi. Scope includes stringer fabrication, tread and riser installation, mid-flight landing plates, and handrail and balustrade systems in MS or stainless steel. Staircases are fabricated to structural drawings with site-measured dimensions verified before cutting begins. Installation is sequenced with the construction programme — AEC coordinates with the civil contractor on the position and level of structural staircase support brackets cast into concrete slabs before slab pour to avoid remedial cutting on site.
Does AEC supply structural steel material or does the client procure it?
On fixed-price fabrication contracts, AEC procures structural steel material directly from verified suppliers in Korangi Industrial Area and SITE, Karachi. Material specification is confirmed against the structural drawing before procurement. For cost-plus contracts where the client has an existing material supply arrangement, AEC can fabricate from client-supplied material with all other terms confirmed in the pre-contract stage. AEC does not accept liability for dimensional or quality defects in client-supplied steel that affect fabrication output or structural performance.