Durboro offers a comprehensive range of carbon steel pipes for structural, mechanical, and pressure applications. Our carbon steel pipes are manufactured according to ASTM A53, ASTM A106, API 5L, EN 10219, and EN 10210 standards. Available in both seamless and welded (ERW/SAW) configurations, our pipes cover sizes from DN 15 to DN 600 (1/2" to 24") with wall thicknesses ranging from Schedule 10 to Schedule XXS.
We supply grades S235JRH, S275JOH, S355J2H, P235GH, P265GH, A106 Grade B, API 5L Grade B through X65. All pipes come with EN 10204 3.1 certificates, hydrostatic test reports, and full chemical/mechanical traceability. Available in standard lengths of 6m and 12m, with custom cutting services. Surface finishes include black, varnished, galvanized, and coated options.
Welded and seamless carbon steel pipes for general and high-temperature service. Standards: ASTM A-53 (black and galvanized, Grades A & B), ASTM A-106 (seamless, Grades A, B & C), ASTM A-333 (low-temperature service, Grades 1, 3, 6, 7 & 8), DIN 2440/2441 (threaded/unthreaded, black/galvanized), DIN 2448 (seamless), DIN 2458 (welded), and ISO 65. ERW carbon steel pipes also available. Wall thicknesses from Sch.5S to XXS, sizes 1/4" to 40".
Austenitic stainless steel pipes per ASTM A-312 (welded and seamless, all grades) and ASTM A-358 (welded, for high-temperature service). Ferritic alloy steel pipes per ASTM A-200 (Grades T4, T5, T7, T9, T91, T11, T21, T22) and ASTM A-335 (Grades P1, P2, P5, P7, P9, P11, P22) for refinery and high-temperature applications. Ideal for chemical plants, power generation, oil refineries, and corrosion-resistant environments.
Hot-rolled seamless tubes manufactured from continuously cast billets. Applications include: boiler tubes (EN 10216-2, DIN 2448) for power plants operating at elevated temperatures; heat exchanger tubes (DIN 28180, ASTM A/SA 179) for energy and chemical industries; oil & gas pipeline tubes (EN ISO 3183, API 5L) for high-pressure transport; mechanical engineering tubes (EN 10297-1, ASTM A 519) for machine parts and pressure vessels; structural tubes (EN 10210-2) as circular hollow sections for steel constructions; and tubes for threading and welding (EN 10255, ASTM A 53) for water, liquid, air, and gas distribution. Dimensions: OD 10.2-139.7mm, wall thickness 0.5-16.0mm.
Cold-drawn precision seamless tubes per EN 10305-1 and DIN 2391 for automotive, mechanical engineering, and hydraulic applications. Includes: precision tubes (OD 4.0-125.0mm, wall 0.5-12.5mm) for steering systems, cardan shafts, shock absorbers, and chassis; hydraulic cylinder tubes (HPZ, HP, HPK types, ID 40.0-115.0mm) with honed or peeled inner surfaces; hydraulic circuit tubes HPL (OD 6.0-80.0mm) for pressure distribution in hydraulic and pneumatic systems; galvanized precision tubes (OD 4.0-42.0mm) for automotive and commercial vehicles; and bearing manufacturing tubes (OD 22.0-70.0mm) in 100Cr6 steel grade.
Structural steel tube profiles in S355 quality with 3.1 certificates and full traceability. Rectangular hollow sections from 100x50 to 600x400mm. Square hollow sections from 60x60 to 500x500mm. Circular hollow sections from 101.6 to 609.6mm outer diameter. Wall thicknesses: 4, 5, 6, 8, 10, 12.5, 16, and 20mm. Available lengths: 6 to 20 meters, with optimization cutting to minimize waste. Applications: steel construction, infrastructure, industrial buildings, bridges, and heavy-duty structural frameworks.
Butt-Weld Fittings: Elbows (45°, 90°, 180°), equal and reducing tees, concentric and eccentric reducers, and caps per ANSI B16.9. Materials: carbon steel (A234), low-temp (A420), alloy (A860), and stainless (A403). Sizes 1/2" to 48". Forged Fittings: Couplings, elbows, tees, unions, caps, sockolets, weldolets, and nipples. NPT and Socket Weld connections, 3000/6000/9000 LBS, sizes 1/4" to 4". Flanges: Welding Neck, Socket Weld, Slip-On, and Blind per ANSI B16.5 (150-3000 LBS) and DIN 2573-2642 (PN-6 to PN-160). Valves: Gate, Globe, Check (API 600/602/603), Ball (floating and trunnion, 150-2500 LBS), and Butterfly valves. Sizes 1/2" to 60".
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