Pipes Manufacturer & Exporter in India: SS, Nickel, CS & Alloy

Types of pipes

Seamless PipesSeamless pipe has no longitudinal weld.Welded PipesWelded pipe is formed from strip or plate and joined along a longitudinal (or spiral) seam.ERW PipesERW (electric resistance welded) pipe is made by forming strip into a tube and welding the edges with high-frequency current, without filler metal.EFW PipesEFW (electric fusion welded) pipe is rolled from plate and fusion welded (TIG/plasma/SAW), with or without filler.

Pipes by material

How they are made

Seamless pipe is pierced from a solid billet and hot-finished or cold-drawn. Welded pipe is formed from strip or plate and welded longitudinally (ERW/HFW, TIG/plasma, EFW, LSAW) or spirally (SAWH). Stainless and nickel-alloy pipe is then solution annealed and pickled. Carbon and alloy steel pipe is supplied as-rolled, normalised, or normalised and tempered according to the specification.

Pipes: how they are made, sized and tested

How it's madeSeamless pipe is pierced from a solid billet and hot-finished or cold-drawn. Welded pipe is formed from strip or plate and welded longitudinally (ERW/HFW, TIG/plasma, EFW, LSAW) or spirally (SAWH). Stainless and nickel-alloy pipe is then solution annealed and pickled. Carbon and alloy steel pipe is supplied as-rolled, normalised, or normalised and tempered according to the specification.

Size range: NPS ⅛" to 48" and larger (DN 6 – DN 1200+), schedules 5S to XXS, single random, double random and cut lengths
Finish: Annealed & pickled, bright annealed, mill finish, black, varnished, galvanised or 3LPE / FBE coated (by material)
Ends: Plain end (PE), bevelled end (BE, ASME B16.25), threaded (NPT / BSP), grooved

Testing & documents

Chemical and mechanical (tension, flattening, flare/bend) tests
Hydrostatic test or non-destructive electric test (UT/ET) on each length
Dimensional and visual inspection
Intergranular corrosion (stainless), impact (low-temperature), hardness (sour service) when specified
PMI and third-party inspection on request
EN 10204 3.1 certificate; 3.2 with third-party inspection

Marking and packing

Marking: Manufacturer, specification, grade, NPS × schedule (or OD × WT), seamless/welded, heat number and test pressure or NDE, stencilled or ink-jet along each length.

Packing: Bundled with steel strapping or in wooden boxes and crates for stainless and nickel alloys, with plastic end caps, and sea-worthy marking per length and bundle.

Pipes: comparisons

Weight calculators

Estimate weights with our pipe & tube weight calculator.

Frequently asked questions

What is the difference between NPS and OD?

NPS (nominal pipe size) is a designation, not a measurement. Up to NPS 12 the actual OD is larger than the nominal number (for example NPS 2 = 60.33 mm OD). From NPS 14 upward, the OD equals the NPS in inches.

What is a pipe schedule?

Schedule defines wall thickness for a given NPS. Higher schedules have thicker walls. Stainless schedules carry an "S" suffix (40S, 80S) under ASME B36.19M.

Which materials are pipes available in?

Stainless Steel, Nickel Alloys, Carbon Steel, Alloy Steel, Non-Ferrous Metals: 70 grades in total, from stock or mill-sourced.

What sizes of pipes do you supply?

NPS ⅛" to 48" and larger (DN 6 – DN 1200+), schedules 5S to XXS, single random, double random and cut lengths.

How are pipes tested?

Chemical and mechanical (tension, flattening, flare/bend) tests; Hydrostatic test or non-destructive electric test (UT/ET) on each length; Dimensional and visual inspection.

Pipes

Types of pipes

Pipes by material

Stainless Steel Pipes

Nickel Alloys Pipes

Carbon Steel Pipes

Alloy Steel Pipes

Non-Ferrous Metals Pipes