Carbon Steel Pipes in Pakistan

Carbon steel pipe is the workhorse of industrial piping — strong, weldable, pressure-rated and economical. A. Karimjee & Sons supplies seamless and welded carbon steel pipes to ASTM A106 Grade B, ASTM A53 Grade B and API 5L Grade B, in sizes from 1/4″ up to 42″ and wall thicknesses from SCH 10 through XXS.

We supply both to mechanical and structural applications and to line-pipe service, with API 5L grades X42, X52, X60, X65 and X70 available for higher-strength transmission requirements.

Carbon Steel Pipe Specifications

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Carbon steel pipe specifications
Material	Carbon Steel
Standards	ASTM A106 Grade B, ASTM A53 Grade B, API 5L Grade B
High-strength grades	API 5L X42, X52, X60, X65, X70
Manufacturing types	Seamless, ERW, SAW, Spiral Welded
Size range	1/4″ to 42″ NB
Wall thickness	SCH 10, 20, 30, 40, 80, 100, 120, 160, STD, XS, XXS
Length	6 m (20 ft) and 12 m — subject to availability
Finish	Black painted, bare, varnished
End types	Plain end, bevelled end, threaded

Types of Carbon Steel Pipe We Supply

Seamless Pipe

Formed without a weld seam, giving uniform strength around the full circumference. Preferred for high-pressure and high-temperature lines where seam integrity is critical.

ERW Pipe

Electric resistance welded — cost-effective and dimensionally consistent, widely used for water, structural and lower-pressure service.

SAW & Spiral Welded Pipe

Submerged arc welded, longitudinal or spiral. The practical choice for large-diameter lines in water transmission, piling and pipeline work.

Key Features

High tensile strength for demanding structural and pressure duty
Excellent durability and long service life
Seamless construction available for critical service
Suitable for high-pressure and elevated-temperature applications
Readily fabricated, welded and machined on site
Cost-effective compared with alloy alternatives

Need this size in stock? Tell us the grade, schedule and quantity — we'll confirm availability.

Request a quote +92-21-32422431

Karachi · Supplying Pakistan

Why buy your pipes from A. Karimjee & Sons

Ready stock in Karachi: Reduced lead times on common sizes and grades, held at our warehouse.
Documented quality: Mill test certificates to EN 10204 3.1 supplied on request, with full heat traceability.
Full standards coverage: ASTM, API, ASME and BS EN specifications across carbon steel, stainless and GI.
One-stop supply: Pipes plus matching valves, flanges, fittings and gaskets from one supplier.
Technical support: Help selecting grade, schedule and end preparation for your service conditions.
Nationwide delivery: Karachi, Lahore, Islamabad, Faisalabad, Multan, Hyderabad, Quetta and project sites.