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SMLS Coil Tube

Seamless (SMLS) Coil Tubes
 

H.X. Tube
U Bending
Tube
Finned Tube
Instrument Tube

Pre-insulated
Tubing Bundle
Precise Tube
SMLS Coil
Tube
Pipe
 
Seamless SMLS coil tubing product

Application Field

OIL & GAS
SHIPBUILDING
AEROSPACE & DEFENSE
CHEMICAL PROCESS & INSTRMENTATION
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ALTERNATIVE ENERGY
CHROMATOGRAPHY

Seamless Coil Tube

ASEA METAL supplies seamless (SMLS) coil tubing for projects that require long continuous lengths, high surface quality (BA option) and reliable inspection documentation. Typical standards include ASTM A213 / A269 and EN 10216-5, with MTC (EN 10204 3.1) and NDT options by request. Share OD/WT, length per coil and standard/grade to get a fast quotation. We produce seamless (SMLS) coil tubing in Korea for long-length projects that reduce joints and leak points. Typical standards include ASTM A269 TP316L and ASTM A269 TP304L, with ASTM A213 TP316L reviewed where specified. Coil length per reel, surface finish (BA), and inspection scope are confirmed to match project requirements. We support ECT and MTC (EN 10204 3.1 / 3.2) for export deliveries. ASEA METAL operates as a Korean tube mill coordinating coil packing and handling protection.
Quick specs
ProductSMLS (seamless) coil tubing
Typical standardsASTM A213 / A269 / A632, EN 10216-5 (TC1/TC2)
Typical grades316/316L, 304/304L, 1.4404, 1.4435 (and project grades on request)
Supply formCoils on steel/wooden reels, UV-protected wrapping (as required)
Inspection / documentsMTR/MTC (EN 10204 3.1). NDT (ECT) and pressure tests on request
Request a quotation (RFQ)
Please include OD, WT, length per coil, total quantity, grade/standard, surface finish (BA if needed) and inspection requirements.
Contact / RFQ
How do I specify coil tubing in an RFQ?

Send OD, WT, required continuous length per coil, total quantity, grade, standard/spec, finish (BA/other), and any inspection (ECT, hydro/pneumatic) plus required documents (MTC 3.1).

Can you supply duplex or nickel alloys?

Yes. Depending on project requirements, we can offer duplex/super duplex and selected nickel alloys. Share your target environment (chloride / H2S / temperature) and the applicable spec.
 

General size for Coil tubes.

Inch mm Length
O.D W.T O.D W.T
1/4" 0.028 6.35 0.71 389M ~ 430M
/ Coil
0.035 0.89 320M ~ 354M
/ Coil
0.049 1.24 246M ~ 272M
/ Coil
3/8" 0.028 9.53 0.71 249M ~ 275M
/ Coil
0.035 0.89 202M ~ 224M
/ Coil
0.049 1.24 152M ~ 168M
/ Coil
1/2" 0.028 12.7 0.71 183M ~ 202M
/ Coil
0.035 0.89 148M ~ 164M
/ Coil
0.049 1.24 110M ~ 121M
/ Coil
Production range (kg) : 24kg ~ 42kg
 
* Not in the table above is possible to order other sizes please contact us
 

Chemical Requirements %

  C Si Mn P S Ni Cr Mo Ti N Cu
A213 0.035 1 2 0.0145 0.03 10.0-14.0 16.0-18.0 2.0-3.0 – – –
A269 0.035 1 2 0.045 0.03 10.0-15.0 16.0-18.0 2.0-3.0 – – –
A632 0.03 0.75 2 0.045 0.03 10.0-15.0 16.0-18.0 2.0-3.0 – – –
G3459 0.03 1 2 0.045 0.03 12.0-16.0 16.0-18.0 2.0-3.0 – – –
10216-5
(1.4404)		 0.03 1 2 0.04 0.015 10.0-13.0 16.5-18.5 2.0-2.5 – 0.11 –
10216-5
(1.4435)		 0.03 1 2 0.04 0.015 12.5-15.0 17.0-19.0 2.0-3.0 – 0.11 –

Tensile and Hardness Requirements

  TS(N/mm2) TS(N/mm2) E(%) HARDNESS
A213 485 170 35 90HRDB
A269 – – – 90HRDB
A632 485 170 35 –
G3459 480 175 35 –
10216-5(1.4404) 490-690 190 30 –
10216-5(1.4435) 490-690 190 30 –
Shipbuilding applications and SMLS coil tube products
Shipbuilding applications and SMLS coil tube products
Technical Advantages & Engineering Value

1. Dramatic Reduction in Installation Costs & Leak Risks
ASEA METAL's SMLS Coil Tubing reaches up to 2,000 meters. By eliminating 50-80% of welds, we reduce leak points in Subsea Umbilicals and Control Lines.

2. Superior Surface Quality via Bright Annealing (BA)
Specialized BA process results in a mirror-like finish, minimizing friction and maximizing corrosion resistance for Aerospace and Chromatography.

3. Strict Compliance with Global Standards (ASTM & EN)
Full compliance with ASTM A213, A269, and EN 10216-5. 100% Eddy Current and hydrostatic tested with full MTR traceability.

4. Versatile Material Range (Duplex & High-Nickel)
Beyond TP316L, we offer Duplex S31803, Super Duplex S32750, Monel 400, and Inconel 625 with Chemical Compatibility Analysis.
Technical Specifications & Engineering Value of ASEA METAL SMLS Coil Tubing

1. Seamless Integrity and Ultra-Long Length Advantage ASEA METAL's SMLS (Seamless) Coil Tubing is manufactured using a precision cold-drawing process, ensuring a completely seamless structure with no weld seams. This eliminates the risk of Weld Heat Affected Zone (HAZ) corrosion, a common failure point in welded alternatives. Our capability to produce continuous lengths up to 2,000 meters per coil significantly reduces the need for orbital welds and mechanical fittings by 50-80%. This "Seamless Integrity" is critical for high-stakes applications such as Subsea Umbilicals, Chemical Injection Lines, and Downhole Control Lines, where leak prevention is paramount and repair costs are astronomical.

2. High-Purity Surface via Bright Annealing (BA) Process To meet the stringent requirements of high-tech industries, all our coil tubes undergo a specialized Bright Annealing (BA) process in a controlled hydrogen atmosphere. This heat treatment prevents oxidation and results in a mirror-like internal and external surface finish. A superior surface roughness (Ra) minimizes friction for fluid flow, prevents micro-particle entrapment, and maximizes resistance to pitting corrosion. It is the gold standard for Analytical Chromatography, Aerospace fuel lines, and High-purity Semiconductor Gas systems.

3. Strict Compliance with International Standards and Quality Assurance We guarantee 100% compliance with global standards, including ASTM A213, A269, A632, and EN 10216-5 TC1/TC2. Every millimeter of our coil is subjected to Non-Destructive Testing (NDT), including 100% Eddy Current Testing (ECT). Upon request, we perform rigorous Hydrostatic or Pneumatic testing at pressures exceeding 1.5 times the design limit. Full Material Test Reports (MTR) provide 100% traceability for chemical composition, mechanical properties (Tensile, Yield, Elongation), and hardness, ensuring adherence to ASME Section III and PED (Pressure Equipment Directive) safety codes.

4. Specialized Alloys for Extreme Corrosive Environments Beyond standard TP316/316L, ASEA METAL specializes in high-performance alloys engineered for extreme offshore and refinery environments:
• Duplex & Super Duplex (S31803 / S32750): Exceptional resistance to Chloride Stress Corrosion Cracking (SCC).
• Nickel Alloys (Monel 400, Inconel 625, Alloy 825): Superior performance in Sour Service (H2S) and high-temperature petrochemical processing.

5. Precision Tolerances and Optimized Logistics Packaging We maintain ultra-tight tolerances on Outside Diameter (O.D.) and Wall Thickness (W.T.) to ensure perfect compatibility with instrumentation compression fittings. To ensure the tubing arrives in factory-perfect condition, we utilize specialized Steel or Wooden Reels with UV-resistant wrapping, preventing kinking or surface abrasions during global transit.