Manufacturer, stockist and supplier · Supplying GCC, Southeast Asia, Europe, United States, United Kingdom & India

ramesh@brighttubes.in · +91 98200 74585

56 grades 4 material families

Tubes

Tubes are hollow sections specified by exact outside diameter and wall thickness, with tighter tolerances than pipe. They're used for heat exchangers, boilers, instrumentation, hydraulics and mechanical parts, where precise dimensions and surface quality matter.

Request a quote →
Tubes OD 3 mm to about 127 mm (¼" to 5&qu
On this page 8 sections
  1. Types
  2. By material
  3. Manufacturing
  4. Sizes & testing
  5. Marking & packing
  6. Comparisons
  7. Calculators
  8. FAQs

Types of tubes

Seamless TubesSeamless tubes are hot-extruded or pierced and then cold-drawn or pilgered to precise OD and wall thickness.Welded TubesWelded tubes are formed from precision strip, welded (TIG/laser), bead-worked and annealed.Heat Exchanger TubesHeat-exchanger tubes transfer heat between two fluids in shell-and-tube exchangers, condensers, feedwater heaters and coolers.Boiler TubesBoiler tubes carry water and steam in boiler waterwalls, economisers, superheaters and reheaters.Instrumentation TubesInstrumentation tubes connect process lines to gauges, transmitters and analysers.Hydraulic TubesHydraulic tubes carry high-pressure oil in machinery, offshore hydraulic systems and mobile equipment.U-Bend TubesU-bend tubes are heat-exchanger tubes bent into a U-shape so the tube bundle can expand freely.Precision TubesPrecision tubes are cold-drawn tubes with very tight dimensional tolerances and a high-quality surface for mechanical, automotive, hydraulic-cylinder and instrument applications (for example EN 10305-1 carbon steel or stainless steel to ASTM A269 / A511)..

Tubes by material

Stainless Steel Tubes

Nickel Alloys Tubes

Alloy Steel Tubes

Non-Ferrous Metals Tubes

How they are made

Seamless tubes are hot-extruded or pierced and then cold-drawn or pilgered to size. Welded tubes are formed from strip, welded (TIG/laser/HF), bead-worked and drawn or sized. Heat-exchanger and boiler tubes are annealed after final forming, and U-tubes are bent and stress-relieved as required.

Tubes: how they are made, sized and tested

Tubes OD 3 mm to about 127 mm (¼" to 5&qu

How it's madeSeamless tubes are hot-extruded or pierced and then cold-drawn or pilgered to size. Welded tubes are formed from strip, welded (TIG/laser/HF), bead-worked and drawn or sized. Heat-exchanger and boiler tubes are annealed after final forming, and U-tubes are bent and stress-relieved as required.

Size range
OD 3 mm to about 127 mm (¼" to 5") typical, wall 0.5 mm to 12 mm; BWG or mm; straight lengths up to about 30 m, U-bent to drawing
Finish
Annealed & pickled, bright annealed (BA), polished (sanitary), cold-drawn
Ends
Plain square-cut, deburred; U-bends with stress-relieved bends on request

Testing & documents

  1. Eddy-current and/or ultrasonic testing on each tube
  2. Hydrostatic or pneumatic test
  3. Flattening, flaring and flange tests
  4. Grain size (H grades), IGC and hardness when specified
  5. Surface roughness (Ra) for sanitary and instrumentation tube
  6. EN 10204 3.1 certificate; 3.2 with third-party inspection

Marking and packing

Marking: Specification, grade, OD × WT, heat number and manufacturer, ink-jet printed along the length.

Packing: Wooden boxes with polythene lining and end caps. Straight-length tubes are packed in bundles with spacers to prevent damage.

Tubes: comparisons

Weight calculators

Estimate weights with our pipe & tube weight calculator.

Frequently asked questions

What is the difference between a pipe and a tube?

Pipes are ordered by nominal size and schedule for carrying fluids. Tubes are ordered by exact OD and wall thickness, with tighter tolerances, for heat transfer, instrumentation and structural uses.

What is BWG?

Birmingham Wire Gauge, a traditional system for tube wall thickness. Higher numbers are thinner walls (for example 16 BWG = 1.65 mm).

Which materials are tubes available in?

Stainless Steel, Nickel Alloys, Alloy Steel, Non-Ferrous Metals: 56 grades in total, from stock or mill-sourced.

What sizes of tubes do you supply?

OD 3 mm to about 127 mm (¼" to 5") typical, wall 0.5 mm to 12 mm; BWG or mm; straight lengths up to about 30 m, U-bent to drawing.

How are tubes tested?

Eddy-current and/or ultrasonic testing on each tube; Hydrostatic or pneumatic test; Flattening, flaring and flange tests.

Need tubes?

Send grade, specification, size and quantity. We reply with availability and documentation.

Send your requirement →Email ramesh@brighttubes.in
Request a Quote Call
WhatsApp