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STAINLESS STEEL SEAMLESS TUBES

Seamless Coil Form Tubes

Continuous lengths of seamless tubing wound into compact coils, ideal where space saving and high pressure resistance are both required.

OD 6 – 19.05 MM WALL 0.6 – 2.11 MM COIL UP TO 250 M 304 / 304L / 316 / 316L CUSTOM ANNEALED
OVERVIEW

One continuous length, no joints in the run

Coil form tubes are produced seamlessly without welds for uniform strength, then wound into coils that ship and install in far less space than straight lengths. Removing intermediate joints from a long run removes the leak points with them.

Coil lengths run up to 250 metres depending on size, with custom annealing so the coil remains flexible during uncoiling. Polished finishes are available where cleanliness matters.

Depending on size, coil form tubing can handle pressures up to thousands of PSI, which is what makes it the default choice for instrument and hydraulic runs in congested plant.

Coiled seamless stainless steel tubing on a reel
SPECIFICATION
OD RANGE
6.00 – 19.05 mm
WALL THICKNESS
0.6 – 2.11 mm
COIL LENGTH
Up to 250 m (depending on size)
GRADES
304, 304L, 316, 316L for superior corrosion resistance
STANDARDS
ASTM A213, A269 or A249
CONSTRUCTION
Seamless and welded, uniform wall for consistent strength
PRESSURE
Up to thousands of PSI depending on OD and wall
FINISH
Polished finishes available; custom annealing for uncoiling flexibility
DOCUMENTATION
Mill test certificates EN 10204 3.1 / 3.2, heat-code marking
PACKING
Coiled, wrapped and end-capped for transit protection
KEY ADVANTAGES

Why coil form

01

Space saving

Long continuous runs ship and store in a fraction of the space of straight lengths.

02

Fewer joints

Continuous tubing removes intermediate connections and the leak risk they introduce.

03

Pressure capability

Seamless wall supports high working pressures in compact installations.

04

Uncoiling flexibility

Custom annealing keeps the coil workable during installation.

APPLICATIONS

Where coil form is used

Instrumentation and control lines in congested plant
Hydraulic systems requiring long uninterrupted runs
Chemical processing transfer lines
Oil and gas installations where space and pressure both constrain the design
ORDERING

What to send us for a firm quote

The more of this we have up front, the faster the quotation and the fewer clarifications later. Partial enquiries are welcome — we will tell you what else the specification needs.

Send an enquiry
Grade
e.g. 304L, 316L, 321, 904L, duplex 2205
OD and wall
Outside diameter x wall thickness in mm or inch
Length or form
Straight length, U-bend leg and radius, or coil length
Standard
ASTM / ASME, EN or DIN specification to be certified against
Finish
Mill, pickled, BA, mechanically polished or electropolished with target Ra
Testing
Hydrostatic or pneumatic, eddy current, ultrasonic, boroscope
Documentation
EN 10204 3.1 or 3.2, surface analysis, heat-code marking
Quantity and packing
Tonnage or metres, plus packing and marking requirements
FREQUENTLY ASKED

Seamless Coil Form Tubes — common questions

How long can a single coil be?

Coil lengths run up to 250 metres depending on size, wall and handling constraints.

Will the coil stay flexible during installation?

Yes. Coils are custom annealed so they remain workable while uncoiling, without loss of mechanical properties.

What pressures can coil form tubing handle?

Depending on size and wall, coil form tubing can handle pressures up to thousands of PSI, because the wall is seamless throughout.

Why use coil instead of straight lengths?

A continuous coil removes intermediate joints from a long run, which removes the leak points with them, and it ships and installs in far less space.

Enquire about Seamless Coil Form Tubes

Send grade, OD, wall, length, standard and finish for a firm quotation.

Request a Quote