Prime Steel Pipes &
Structural Tubes
(API 5L, ASTM A106, ASTM A53 & EN 10219)
Direct mill allocations of prime seamless carbon steel line pipes, high-frequency ERW welded casing pipes, and cold-formed structural hollow sections (SHS & RHS). Engineered for cross-country energy pipelines, industrial refinery circuits, water transmission networks, and heavy architectural frameworks. Delivered on chartered breakbulk vessels (CIF/CFR) with 100% independent SGS inspection. Available subject to current specification, origin, and allocation.
Engineered Line Pipe, Welded Casing &
Structural Hollow Sections for Critical Infrastructure.
In high-pressure energy transportation, refinery fluid handling, and monumental steel construction, tubular products demand rigorous metallurgical integrity. Whether managing sour service hydrocarbons under API 5L PSL2 criteria, high-temperature steam lines under ASTM A106, or dynamic torsional loads in structural spatial trusses under EN 10219, dimensional precision and certified weld strength are non-negotiable.
Asia & Africa General Trading delivers continuous allocations of prime seamless carbon steel pipes, high-frequency electric resistance welded (ERW) and submerged arc welded (LSAW/SSAW) pipes, alongside cold-formed square (SHS) and rectangular (RHS) hollow structural sections. Sourced from vetted integrated tube mills, every heat is accompanied by full ladle chemical analysis, mechanical elongation testing, and 100% hydrostatic and non-destructive ultrasonic verification.
Operating through our Dubai headquarters, our commercial team coordinates specialized end-finishing (beveled, plain, threaded & coupled), anti-corrosive coating (3LPE, FBE, black varnish, hot-dip galvanizing), and chartered maritime delivery across key ports in the Middle East, Africa, and Asia.
Benchmark Standards & Manufacturing Codes
Our steel pipes and hollow sections are manufactured under international petroleum, pressure equipment, and structural construction codes, accompanied by EN 10204 Type 3.1 inspection documentation.
| Parameter | API 5L Line Pipe (PSL1 / PSL2) | ASTM A106 Gr B / A53 Gr B | EN 10219 (SHS / RHS / CHS) |
|---|---|---|---|
| Governing Standards | API Spec 5L / ISO 3183 | ASTM A106 / A53 / ASME SA106 | BS EN 10219-1/2 • EN 10210 |
| Manufacturing Process | Seamless (SMLS) • ERW • LSAW | Seamless (Hot finished / Cold drawn) | Cold-formed high-frequency welded |
| Size Range (OD) | 1/2" to 28" (SMLS) • up to 80" (LSAW) | 1/2" NB to 24" NB (21.3 – 610 mm) | SHS: 20x20 – 400x400 • RHS: 40x20 – 500x300 |
| Wall Thickness | SCH 20, 30, 40, STD, 80, XS, 160, XXS | SCH 40 to SCH XXS (2.77 – 59.5 mm) | 1.5 mm to 16.0 mm wall thickness |
| Yield Strength (Min) | 245 MPa (Gr B) up to 485 MPa (X70) | 240 MPa (35,000 psi) | 275 MPa (S275J2H) • 355 MPa (S355J2H) |
| Tensile Strength (Min) | 415 MPa (Gr B) up to 570 MPa (X70) | 415 MPa (60,000 psi) | 430 – 580 MPa (S275) • 470 – 630 MPa (S355) |
| Impact Toughness | Charpy V-Notch (0°C / -20°C per PSL2) | Sub-zero tested upon customer request | Charpy V-Notch ≥ 27J at -20°C (J2H grade) |
| Surface Protection | 3LPE, 3LPP, FBE, Black Varnish, Bare | Black lacquer, Light oiling, Mill varnish | Self-colour, Lightly oiled, HDG Galvanized |
| End Finish | Beveled (30°±5°), Plain square cut | Beveled ends with plastic protective caps | Square cut, deburred ends |
| Standard Lengths | SRL (5.8m–6.5m) • DRL (11.8m–12.2m) | 6.00m • 12.00m • Custom mill lengths | 6.00m • 12.00m • Bundle packaged |
Looking for Sour Service PSL2, Heavy Wall Casing, or Hot-Dip Galvanized GI Pipes?
We arrange customized mill allocations for sour service requirements (NACE MR0175 / ISO 15156 HIC & SSCC tested), hot-dip galvanized (GI) utility pipes conforming to BS 1387 / ASTM A53, seamless alloy boiler tubes (ASTM A335 P11 / P22 / P91), and custom large-diameter LSAW/SSAW piling pipes up to 2,032 mm OD.
Common Applications & Industry Use Cases
Our steel pipes and hollow sections provide hydraulic pressure containment, structural rigidity, and corrosion-resistant transport across major infrastructure and energy sectors.
01
Petrochemical Refineries & Pressure Piping
High-temperature seamless ASTM A106 Grade B line pipes deliver dependable thermal resistance and leak-proof reliability across chemical processing loops, steam headers, and hydrocarbon refineries.
02
Cross-Country Pipelines & Offshore Jackets
API 5L PSL2 line pipes (Grades X52 to X70) provide high yield-to-tensile ratios, fracture toughness, and low carbon equivalent for cross-country crude oil and natural gas pipelines and offshore platform jacket legs.
03
Architectural Frames & Hollow Section Columns
Structural SHS and RHS (S355J2H) hollow sections provide superior multi-axial bending resistance and high strength-to-weight ratios for airport terminals, sports stadium space frames, and skyscraper composite columns.
04
Water Desalination & Utility Transmission
Galvanized iron (GI) pipes and cement-lined ERW/LSAW carbon steel pipes ensure long-term corrosion resistance for municipal potable water networks, wastewater treatment lines, and agricultural irrigation grids.
05
Mechanical Tubing & Hydraulic Cylinders
Heavy-wall seamless mechanical tubes with tight concentricity and smooth inner bore finishes are deployed in hydraulic cylinder barrels, automotive drive axles, drilling collars, and industrial rollers.
06
Deep Foundation Piling & Marine Casing
High-strength welded steel pipe piles (ASTM A252 Grade 3) and spiral SSAW tubular casings provide dynamic driving resistance for port berths, jetty foundations, and bridge deep piling combi-walls.
Rigorous Testing Protocol & Third-Party Inspection
Every tubular parcel and hollow section order is subjected to comprehensive non-destructive testing, hydrostatic proof loading, and independent third-party survey before ocean vessel departure.
100% Hydrostatic Pressure Testing
Every line pipe length is subjected to hydrostatic proof testing per ASTM A53, A106, and API 5L parameters, sustaining specified fiber stress for at least 5 to 10 seconds with automated digital pressure logging.
Ultrasonic (UT) & Eddy Current NDT
Full-body ultrasonic flaw testing inspects wall thickness uniformity and detects internal laminations, while longitudinal weld seam eddy-current arrays verify complete fusion integrity.
EN 10204 3.1 Certified MTCs
Comprehensive manufacturer test certificates document exact ladle chemistry (C, Mn, P, S, Si, Ceq), yield and tensile values, elongation, flattening, and Charpy V-notch impact toughness values.
Independent SGS / BV Load-Port Survey
Independent surveyors independently verify dimensional tolerances (OD, wall thickness, ovality, straightness), visual surface condition, end bevel protectors, and seaworthy breakbulk hold lashing.
Where We Deliver — Major Seaports & Markets
Direct breakbulk parcel charters and containerized tubular logistics connecting premier pipe mills to primary infrastructure and energy hubs across the GCC, Africa, and South Asia.
GCC & Middle East
Energy & InfrastructureHigh-frequency shipments of API 5L line pipes, fire-fighting tubes, and structural hollow sections supporting energy expansion, district cooling utilities, and regional structural fabrication yards.
East & Southern Africa
Water & MiningContinuous bulk supply of water transmission line pipes, structural casing for foundation piling, and square hollow sections for industrial warehousing and bridge infrastructure projects.
West Africa & South Asia
Commercial EPCBreakbulk charter parcels of ERW, SSAW, and seamless pipes supporting petrochemical refining, port expansion works, and heavy equipment fabrication across primary Atlantic and Indian Ocean ports.
Packaging & Dunnage Standard
Marine ProtectionBundled with high-tensile steel strapping, beveled ends fitted with heavy plastic recessed caps or metal rings, and external anti-rust black varnish or light mill oil protection for maritime ocean voyages.
Frequently Asked Questions
About Steel Pipes & Tubes.
Answers to common questions regarding line pipe schedules, hollow section dimensions, hydrostatic testing certifications, and international marine transport terms.
We supply seamless carbon steel pipes from 1/2 inch (21.3 mm OD) up to 28 inches (711 mm OD). Wall thicknesses span standard Schedule 20, Schedule 40, Schedule 80, Schedule 160, and Schedule XXS, conforming to ASTM A106 Grade B and API 5L PSL1 / PSL2 (Gr B through X70). Available subject to current mill specification, origin, and allocation.
We supply square hollow sections (SHS) from 20x20 mm to 400x400 mm, and rectangular hollow sections (RHS) from 40x20 mm to 500x300 mm, conforming to EN 10219 and EN 10210 in steel grades S275J2H and S355J2H. Standard lengths are 6.0m and 12.0m, with custom mill rollings available on project inquiries.
Yes. Every seamless line pipe and ERW parcel undergoes 100% hydrostatic pressure testing at the mill, supplemented by non-destructive ultrasonic flaw detection (UT) and eddy-current inspection. Full EN 10204 Type 3.1 mill test certificates accompany every shipment, with third-party SGS or Bureau Veritas survey at load-port.
Small to medium diameter pipes (up to 6 inches) are packed in tight hexagonal bundles secured with heavy high-tensile steel strapping. Large diameter pipes are shipped loose with beveled end protectors, plastic thread caps, and anti-rust varnish or light protective oil for breakbulk vessel holds.
International transactions are typically structured via 100% Irrevocable Letter of Credit (LC at Sight) issued by a Tier-1 commercial bank under ICC UCP 600 rules, or telegraphic transfer (T/T) against shipping documents. Delivery is executed under Incoterms 2020 (CIF or CFR to discharge port, or FOB load-port).
Direct Mill Supply Desk