Womic Stainless Steel Co., Ltd
Exceptional High-Temperature Strength: Maintains excellent mechanical properties up to 700°C (1292°F), with precipitation-hardening providing yield strengths exceeding 1000 MPa after proper heat treatment.
Outstanding Creep and Rupture Resistance: Superior long-term creep-rupture strength for prolonged service at elevated temperatures, ensuring decades of reliable performance in gas turbine and aerospace applications.
Excellent Fatigue and Fracture Toughness: Outstanding low-cycle and high-cycle fatigue resistance, with superior fracture toughness compared to other high-strength superalloys.
Good Oxidation and Corrosion Resistance: High chromium content (17-21%) provides excellent resistance to oxidation and corrosion in high-temperature environments up to 700°C.
Excellent Weldability: Unlike many precipitation-hardenable superalloys, Inconel 718 exhibits excellent weldability with minimal risk of strain-age cracking, making it suitable for welded structural components.
Surface Quality: Smooth internal and external surfaces available in annealed, aged, or polished conditions for critical aerospace applications.
Mechanical Strength: Ultra-high tensile and yield strength suitable for high-pressure downhole tools, turbine components, and critical structural applications.
Precipitation Hardenable: Unique niobium-based precipitation hardening (gamma double prime phase) provides exceptional strength without the weldability issues associated with aluminum-titanium hardened alloys.
Excellent Cryogenic Properties: Retains excellent strength and ductility down to -253°C (-423°F), making it suitable for cryogenic storage and handling equipment.
Radiation Resistance: Excellent resistance to neutron irradiation-induced embrittlement, suitable for nuclear reactor internals.
International Certification: Tubes can be certified by ABS, BV, DNV, LR, GL, RINA, CCS, KR, and NK, and comply with AMS (Aerospace Material Specifications) , NACE MR0175/ISO 15156, API 6A, NORSOK M-650, and ASME Boiler & Pressure Vessel Code standards.
The Inconel 718 Superalloy Steel Tubes produced by Womic Steel conform to multiple international specifications used in aerospace, oil & gas, and pressure applications:
|
Standard |
Description |
Equivalent Grade / Material Number |
|
AMS 5589 |
Aerospace Material Specification – Seamless tubing |
Inconel 718, solution heat treated + precipitation hardened |
|
AMS 5590 |
Aerospace Material Specification – Seamless tubing |
Inconel 718, solution heat treated |
|
ASTM B637 / ASME SB637 |
Seamless nickel alloy pipe and tube |
UNS N07718 (Inconel 718) |
|
ASTM B983 |
Seamless nickel alloy tube for sour service |
UNS N07718 |
|
API 6A |
Wellhead and Christmas tree equipment |
Inconel 718 |
|
NACE MR0175 / ISO 15156 |
Sour service compliance |
Inconel 718 (precipitation hardened) |
|
NORSOK M-650 |
Qualification of special materials |
Inconel 718 |
|
EN 10216-5 |
Seamless stainless steel tubes for pressure purposes |
2.4668 (NiCr19NbMo) |
|
DIN 17751 |
Nickel alloy tubes |
NiCr19NbMo |
|
ISO 6207 |
Nickel alloy seamless tubes |
NiCr19NbMo |
These standards ensure that Inconel 718 Superalloy Steel Tubes meet global requirements for chemical composition, mechanical performance, testing, and dimensional accuracy.
Different specifications can be customized according to special requirements.
|
Execution Standard |
Main Standard |
Standard Grade |
|
ASTM (USA) |
ASTM B637, B444, B704, B983 |
Inconel 718 (N07718), Inconel 625 (N06625), Inconel 600 (N06600), Inconel 825 (N08825), Hastelloy C276 (N10276) |
|
ASME (USA) |
SB637, SB444, SB704 |
Inconel 718, Inconel 625, Inconel 600, Inconel 825 |
|
AMS (Aerospace) |
AMS 5589, AMS 5590, AMS 5596 |
Inconel 718, Inconel 625, Waspaloy, Rene 41 |
|
API (International) |
API 6A |
Inconel 718, Inconel 625 |
|
ISO (International) |
ISO 13628-5, ISO 6207 |
NiCr19NbMo (2.4668), NiCr22Mo9Nb (2.4856) |
|
EN / DIN (Europe) |
EN 10216-5, EN 10217-7 |
2.4668 (Inconel 718), 2.4856 (Inconel 625), 2.4816 (Inconel 600), 2.4819 (Hastelloy C276) |
|
NACE (International) |
NACE MR0175 / ISO 15156 |
Inconel 718, Inconel 625, Inconel 825, Hastelloy C276 |
|
Element |
Ni |
Cr |
Fe |
Mo |
Nb+Ta |
Ti |
Al |
C |
Mn |
P |
S |
Si |
Co |
Cu |
|
Inconel 718 |
50.0–55.0 |
17.0–21.0 |
Balance |
2.8–3.3 |
4.75–5.50 |
0.65–1.15 |
0.20–0.80 |
≤0.08 |
≤0.35 |
≤0.015 |
≤0.015 |
≤0.35 |
≤1.0 |
≤0.30 |
Note: Inconel 718's unique precipitation hardening mechanism utilizes niobium to form gamma double prime (Ni₃Nb) precipitates, which provide exceptional high-temperature strength without the weldability problems associated with aluminum-titanium hardened alloys like Waspaloy or Rene 41. The alloy exhibits excellent high-temperature strength up to 700°C (1292°F) and retains outstanding toughness at cryogenic temperatures down to -253°C (-423°F).
Comparison with Other High-Strength Superalloys:
|
Property |
Inconel 718 |
Inconel 625 |
Waspaloy |
Rene 41 |
|
Nickel (%) |
50–55 |
≥58 |
Balance |
Balance |
|
Precipitation Phase |
Gamma double prime |
Solid solution |
Gamma prime |
Gamma prime |
|
Weldability |
Excellent |
Excellent |
Fair |
Poor |
|
Max Service Temp |
700°C |
980°C |
980°C |
980°C |
|
Yield Strength (Aged) |
≥1035 MPa |
≥415 MPa |
≥800 MPa |
≥1000 MPa |
|
Typical Application |
Turbine discs, fasteners |
Marine, chemical |
Turbine blades |
High-temp bolts |
The Inconel 718 Superalloy Steel Tube offers ultra-high strength and excellent ductility, making it suitable for critical rotating and structural applications.
|
Property |
Unit |
Solution Annealed |
Aged (Standard) |
Aged (High Strength) |
|
Tensile Strength (min) |
MPa |
≥965 |
≥1275 |
≥1380 |
|
Yield Strength (0.2% offset, min) |
MPa |
≥415 |
≥1035 |
≥1100 |
|
Elongation (min) |
% |
≥30 |
≥12 |
≥8 |
|
Hardness (typical) |
HRC |
≤25 |
35–40 |
40–45 |
|
Density |
g/cm³ |
8.19 |
8.19 |
8.19 |
|
Melting Range |
°C |
1260–1336 |
1260–1336 |
1260–1336 |
|
Thermal Conductivity (20°C) |
W/m·K |
11.4 |
11.4 |
11.4 |
|
Coefficient of Thermal Expansion (20–100°C) |
μm/m·K |
13.0 |
13.0 |
13.0 |
|
Modulus of Elasticity (20°C) |
GPa |
206 |
206 |
206 |
High-Temperature Tensile Properties (Aged Condition, Typical Values) :
|
Temperature (°C) |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
|
20 |
1350–1450 |
1100–1200 |
15–20 |
|
200 |
1300–1400 |
1050–1150 |
15–18 |
|
400 |
1250–1350 |
1000–1100 |
15–18 |
|
500 |
1200–1300 |
950–1050 |
15–18 |
|
600 |
1050–1150 |
900–1000 |
15–20 |
|
650 |
950–1050 |
850–950 |
18–22 |
|
700 |
800–900 |
700–800 |
20–25 |
Creep Rupture Strength (Aged Condition, Typical Values) :
|
Temperature (°C) |
1000 Hour Stress (MPa) |
10,000 Hour Stress (MPa) |
100,000 Hour Stress (MPa) |
|
500 |
950–1050 |
850–950 |
750–850 |
|
550 |
800–900 |
700–800 |
600–700 |
|
600 |
650–750 |
550–650 |
450–550 |
|
650 |
450–550 |
350–450 |
250–350 |
|
700 |
250–350 |
150–250 |
100–150 |
Low-Temperature Properties (Aged Condition) :
|
Temperature (°C) |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
|
-196 (-321°F) |
1500–1600 |
1300–1400 |
15–20 |
|
-253 (-423°F) |
1600–1700 |
1400–1500 |
12–18 |
Inconel 718 Superalloy Steel Tube – Heat Treatment Condition:
Inconel 718 tubes are supplied in one of the following conditions:
|
Condition |
Heat Treatment Sequence |
Cooling Method |
Typical Applications |
|
Solution Annealed |
950–1010°C hold 1 hour |
Air or faster |
Forming, welding, subsequent aging |
|
Standard Aged |
Solution anneal + 720°C (8h) + 620°C (8h) |
Air + Air |
General high-temperature structural, aerospace |
|
High Strength Aged |
Solution anneal + 760°C (10h) + 650°C (8h) |
Air + Air |
High-stress components, downhole tools |
|
Direct Aged |
730°C (8h) + 620°C (8h) |
Air + Air |
Machined components |
Critical Note: Inconel 718 is unique among precipitation-hardenable superalloys because it does not require rapid cooling (quenching) from the solution annealing temperature to retain hardenability. This property, combined with its resistance to strain-age cracking, makes Inconel 718 the most weldable high-strength superalloy available.
Inconel 718 Superalloy Steel Tube – Delivery Condition:
Tubes are normally supplied in solution annealed condition for further fabrication, or aged condition for finished components. Upon request, cold worked finishes can be provided to meet specific strength requirements.
Womic Steel adopts advanced production technology to ensure each Inconel 718 Superalloy Steel Tube meets exact specifications and flawless surface quality.
Raw Material Selection: High-quality Inconel 718 billets from certified premium mills (Special Metals, ATI, Carpenter) with certified chemical composition and traceability. Material is VIM-VAR (Vacuum Induction Melted – Vacuum Arc Remelted) for optimal cleanliness.
Heating and Piercing: Billets heated to a controlled temperature range (1050–1150°C) using specialized heating protocols to maintain workability and pierced using a rotary piercing mill to form hollow shells.
Hot Rolling: Shells elongated and rolled to desired intermediate size with strict temperature control and reduced reduction rates.
Cold Drawing / Cold Pilgering: Tubes refined to precise dimensions and improved surface finish. Multiple passes with intermediate solution annealing required due to work hardening.
Solution Annealing: Heat treatment at 950–1010°C to dissolve precipitated phases and restore ductility. Performed in controlled atmosphere or vacuum furnaces.
Aging Heat Treatment: For aged condition tubes, secondary and tertiary aging heat treatments at 720°C and 620°C to achieve maximum strength.
Pickling & Passivation: Removal of oxides using specialized pickling acids; thorough rinsing required.
Straightening and Dimensional Calibration: Ensures consistent roundness and wall uniformity.
Final Inspection & Marking: Each tube tested, marked with grade, heat number, heat treatment condition, standard, and tube dimensions before packing.
This process guarantees a smooth internal bore, high structural integrity, and exceptional high-temperature strength across all batches of Womic Steel’s Inconel 718 Superalloy Steel Tubes.
Womic Steel utilizes state-of-the-art cold drawing technology to ensure every Inconel 718 Superalloy Steel Tube meets precise specifications and delivers excellent surface quality and performance.
Raw Material Selection: High-quality Inconel 718 hollows from certified premium mills.
Annealing: Solution annealing at 950–1010°C to soften material for cold drawing.
Pickling & Lubrication: Removal of oxides and application of specialized lubricants for cold drawing.
Cold Drawing: Tube drawn through precision dies to achieve exact dimensions and improved surface finish.
Intermediate Annealing: Multiple passes with intermediate solution annealing required due to rapid work hardening.
Aging (if applicable) : For aged condition tubes, full aging heat treatment after final cold draw.
Straightening and Dimensional Calibration: Ensures consistent roundness and wall uniformity.
Cutting and End Finishing: Tubes cut to precise lengths with square ends, deburred.
Final Inspection & Marking: Each tube undergoes dimensional checks, visual inspection, and is marked with grade, heat number, and relevant standards before packaging.
This controlled process guarantees excellent dimensional accuracy, smooth internal surface, and superior mechanical properties for every batch of Womic Steel’s Inconel 718 Superalloy Steel Tubes.
Outside Diameter: 3.2mm – 152mm (1/8″ – 6″)
Wall Thickness: 0.5mm – 12.7mm (0.020″ – 0.500″)
Length: Up to 15m (straight lengths); shorter lengths for precision components
OD Tolerances:
Standard: ±0.08mm
Precision: ±0.03mm (upon request)
Wall Thickness Tolerances:
Standard: ±8% of nominal
Precision: ±5% of nominal (upon request)
Straightness: 0.3mm per 1000mm length typical, tighter upon request
Surface Finish:
Standard: As-drawn or ground
Polished: Ra ≤ 0.4μm (upon request)
|
ANSI B 36.19/ANSI B36.10 DIMENSIONS OF SEAMLESS &WELDED STAINLESS STEEL PIPE |
|||||||||||||||||||
|
Nominalsize |
mm |
ANSIB36.19 |
ANSIB36.10ANSIB36.10 |
||||||||||||||||
|
DN |
NPS |
mm |
5S |
10S |
40S |
80S |
10 |
20 |
30 |
STD |
40 |
60 |
XS |
80 |
100 |
120 |
140 |
160XXS |
|
|
6 |
1/8" |
10.29 |
|
1.24 |
1.73 |
2.41 |
|
|
|
1.73 |
1.73 |
|
2.41 |
2.41 |
|
|
|
|
|
|
8 |
1/4" |
13.72 |
|
1.65 |
2.24 |
3.02 |
|
|
|
2.24 |
2.24 |
|
3.02 |
3.02 |
|
|
|
|
|
|
10 |
3/8" |
17.15 |
|
1.65 |
2.31 |
3.20 |
|
|
|
2.31 |
2.31 |
|
3.20 |
3.20 |
|
|
|
|
|
|
15 |
1/2" |
21.34 |
1.65 |
2.11 |
2.77 |
3.73 |
|
|
|
2.77 |
2.77 |
|
3.73 |
3.73 |
|
|
|
4.78 |
7.47 |
|
20 |
3/4" |
26.67 |
1.65 |
2.11 |
2.87 |
3.91 |
|
|
|
2.87 |
2.87 |
|
3.91 |
3.91 |
|
|
|
5.56 |
7.82 |
|
25 |
1" |
33.4 |
1.65 |
2.77 |
3.38 |
4.55 |
|
|
|
3.38 |
3.38 |
|
4.55 |
4.55 |
|
|
|
6.35 |
9.09 |
|
32 |
1 1/4" |
42.16 |
1.65 |
2.77 |
3.56 |
4.85 |
|
|
|
3.56 |
3.56 |
|
4.85 |
4.85 |
|
|
|
6.35 |
9.70 |
|
40 |
1 1/2" |
48.26 |
1.65 |
2.77 |
3.68 |
5.08 |
|
|
|
3.68 |
3.68 |
|
5.08 |
5.08 |
|
|
|
7.14 |
10.16 |
|
50 |
2" |
60.33 |
1.65 |
2.77 |
3.91 |
5.54 |
|
|
|
3.91 |
3.91 |
|
5.54 |
5.54 |
|
|
|
8.74 |
11.07 |
|
65 |
2 1/2" |
73.03 |
2.11 |
3.05 |
5.16 |
7.01 |
|
|
|
5.16 |
5.16 |
|
7.01 |
7.01 |
|
|
|
9.52 |
14.02 |
|
80 |
3" |
88.9 |
2.11 |
3.05 |
5.49 |
7.62 |
|
|
|
5.49 |
5.49 |
|
7.62 |
7.62 |
|
|
|
11.13 |
15.24 |
|
90 |
3 1/2" |
101.6 |
2.11 |
3.05 |
5.74 |
8.08 |
|
|
|
5.74 |
5.74 |
|
8.08 |
8.08 |
|
|
|
|
|
|
100 |
4" |
114.3 |
2.11 |
3.05 |
6.02 |
8.56 |
|
|
|
6.02 |
6.02 |
|
8.56 |
8.56 |
|
11.13 |
|
13.50 |
17.12 |
|
125 |
5” |
141.3 |
2.77 |
3.40 |
6.55 |
9.52 |
|
|
|
6.55 |
6.55 |
|
9.52 |
9.52 |
|
12.70 |
|
15.90 |
19.05 |
|
150 |
6" |
168.28 |
2.77 |
3.40 |
7.11 |
10.97 |
|
|
|
7.11 |
7.11 |
|
10.97 |
10.97 |
|
14.30 |
|
18.20 |
21.95 |
|
200 |
8" |
219.08 |
2.77 |
3.76 |
8.18 |
12.70 |
|
6.35 |
7.04 |
8.18 |
8.18 |
10.30 |
12.70 |
12.70 |
15.10 |
18.20 |
20.60 |
23.00 |
22.22 |
|
250 |
10" |
273.05 |
3.40 |
4.19 |
9.27 |
12.70 |
|
6.35 |
7.80 |
9.27 |
9.27 |
12.70 |
12.70 |
15.09 |
18.26 |
21.44 |
25.40 |
28.58 |
|
|
300 |
12" |
323.85 |
3.96 |
4.57 |
9.52 |
12.70 |
|
6.35 |
8.38 |
9.52 |
10.31 |
14.27 |
12.70 |
17.48 |
21.44 |
25.40 |
28.58 |
33.32 |
|
|
350 |
14" |
355.6 |
3.98 |
4.78 |
|
|
6.35 |
7.92 |
9.52 |
9.52 |
11.13 |
15.09 |
12.70 |
19.05 |
23.83 |
27.79 |
31.75 |
35.71 |
|
|
400 |
16" |
406.4 |
4.19 |
4.78 |
|
|
6.35 |
7.92 |
9.52 |
9.52 |
12.70 |
16.66 |
12.70 |
21.44 |
26.19 |
30.96 |
36.53 |
40.49 |
|
|
450 |
18" |
459.2 |
4.19 |
4.78 |
|
|
6.35 |
7.92 |
11.13 |
9.52 |
14.27 |
19.05 |
12.70 |
23.83 |
29.36 |
34.92 |
39.67 |
45.24 |
|
|
500 |
20" |
508 |
4.77 |
5.53 |
|
|
6.35 |
9.52 |
12.70 |
9.52 |
15.09 |
20.62 |
12.70 |
26.19 |
32.54 |
38.10 |
44.45 |
50.01 |
|
|
550 |
22" |
558.8 |
4.77 |
5.53 |
|
|
6.35 |
9.52 |
12.70 |
9.52 |
15.87 |
22.22 |
12.70 |
28.57 |
34.92 |
41.27 |
47.62 |
53.97 |
|
|
600 |
24" |
609.6 |
5.54 |
6.35 |
|
|
6.35 |
9.52 |
14.70 |
9.52 |
17.48 |
24.61 |
12.70 |
30.96 |
38.89 |
46.02 |
52.37 |
59.94 |
|
|
650 |
26" |
660.4 |
|
|
|
|
7.92 |
12.70 |
|
9.52 |
|
|
12.70 |
|
|
|
|
|
|
|
700 |
28" |
711.2 |
|
|
|
|
7.92 |
12.70 |
15.88 |
9.52 |
|
|
12.70 |
|
|
|
|
|
|
|
750 |
30" |
762 |
6.35 |
7.92 |
|
|
7.92 |
12.70 |
15.88 |
9.52 |
|
|
12.70 |
|
|
|
|
|
|
|
800 |
32" |
812.8 |
|
|
|
|
7.92 |
12.70 |
15.88 |
9.52 |
|
|
12.70 |
|
|
|
|
|
|
Womic Steel offers a wide range of surface finishes to meet various aerospace, industrial, and critical service applications.
|
Surface Type |
Description |
|
Annealed & Pickled (AP Finish) |
Standard industrial finish – matte, oxide-free after acid treatment. Suitable for general fabrication. |
|
Cold Drawn Finish |
Smooth, bright finish from cold drawing process. Suitable for precision components. |
|
Ground Finish |
Precision ground outer diameter for critical fit applications. |
|
Polished Finish (180#, 240#, 320#, 400#) |
Smooth mechanical finish suitable for high-purity and instrumentation applications. |
|
Centerless Ground Finish |
Ultra-precise OD tolerance for rotating components. |
|
Passivated Finish |
Surface chemically treated to enhance corrosion protection. |
Each Inconel 718 Superalloy Steel Tube surface is inspected for uniform appearance, absence of pits, and consistent finish quality.
Every Inconel 718 Superalloy Steel Tube undergoes comprehensive inspection in accordance with ASTM, AMS, and API standards to guarantee reliability and performance:
|
Test / Inspection |
Description |
Applicability |
|
Visual & Dimensional Inspection |
Surface, roundness, and thickness checked. |
100% |
|
Hydrostatic Pressure Test |
100% tested for leakage and pressure resistance. |
100% |
|
Eddy Current Test (ECT) |
Detects surface and sub-surface imperfections. |
100% |
|
Ultrasonic Test (UT) |
Ensures internal integrity of the seamless structure. |
Upon request |
|
Positive Material Identification (PMI) |
Confirms correct chemical grade of the Inconel 718 tube. |
100% (per heat) |
|
Tensile Testing (RT) |
Confirms grade-specific UTS and YS requirements. |
Per heat / batch |
|
High-Temperature Tensile Testing |
Verifies strength at elevated temperatures. |
Upon request |
|
Stress Rupture Testing |
High-temperature stress resistance verification. |
Per heat (aerospace) |
|
Hardness Testing |
Rockwell C – confirms aged condition. |
Per heat / batch |
|
Grain Size Measurement |
ASTM E112 – ensures optimal grain size for creep. |
Per heat |
|
Microstructure Examination |
Gamma double prime morphology, delta phase verification. |
Per heat |
|
Flattening & Flaring Tests |
Evaluate ductility and deformation capability. |
Per heat / batch |
|
Surface Roughness and Cleanliness Check |
For polished or instrument tubes. |
Upon request |
|
Third-Party Inspection (SGS / BV / DNV / TUV) |
Available upon customer request. |
Upon request |
These extensive tests ensure that every Inconel 718 Superalloy Steel Tube from Womic Steel meets the highest international standards for reliability and longevity.
Inconel 718 Superalloy Steel Tube is ideal for a wide variety of high-strength, high-temperature industries, offering long service life and reliability in demanding conditions:
|
Industry |
Typical Applications |
|
Aerospace |
Aircraft engine high-pressure compressor (HPC) cases, turbine rear frames, thrust reverser components, engine mounts, bleed air ducts, hydraulic lines, fuel system components, actuation system tubing (ship classification certifications available for naval aerospace applications). |
|
Gas Turbines |
Industrial gas turbine compressor casings, turbine housings, bearing supports, fuel nozzles, instrumentation tubing, control system tubing. |
|
Oil & Gas (Downhole) |
High-strength downhole tool components, packer tubing, subsurface safety valve components, perforating gun housings, logging instrument housings, drill collars (NACE MR0175 compliant, API 6A certified). |
|
Rocket and Missile |
Rocket motor casings, thrust chambers, nozzle components, missile airframes, cryogenic propellant tubing, launch vehicle structural components. |
|
Nuclear Power |
Reactor internals, control rod drive mechanism components, fuel assembly components, instrument tubes, core support structures. |
|
High-Temperature Fasteners |
Bolts, nuts, studs, threaded rods for service up to 700°C, gas turbine bolting, engine casing fasteners. |
|
Springs |
High-temperature springs, valve springs, actuator springs, vibration dampers. |
|
Chemical Processing |
High-temperature corrosive service tubing, reactor components, high-pressure acid injection lines. |
|
Cryogenic Equipment |
Liquid hydrogen and liquid oxygen handling tubing, cryogenic storage transfer lines, rocket propellant lines, LNG service. |
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Medical Devices |
Surgical instruments, orthopedic implant tooling, dental instruments requiring high strength. |
Each Inconel 718 Superalloy Steel Tube is securely packed and clearly labeled to ensure safe and efficient transport worldwide.
General
packaging for local truck transport:
Bundle packing with woven fabric, iron strip bundle, plastic cap on two ends.
Hexagonal
packaging:
Bundle packing with woven fabric, iron strip bundle, plastic cap on two ends.
Packaging
for precision and aerospace tubes:
Wooden crate with foam padding, individual tube separation, plastic end caps for
export sea-worthy transport.
General
packaging for products to be exported:
Wooden box for export sea-worthy transport.
Packaging
for long-length tubing:
Steel or wooden crates with internal support to prevent bending.
Direct cooperation with global shipowners ensures the most competitive freight rates.
Professional loading and securing teams guarantee damage-free shipment.
Efficient document preparation (EN 10204 3.1/3.2 certificates, MTR, heat treatment certificates, AMS compliance documentation), minimizing customs delays.
Rapid delivery time — select sizes kept in ready stock.
Continuous cargo tracking and after-sales follow-up to ensure smooth arrival at destination.
Womic Steel is a trusted manufacturer and exporter specializing in Inconel 718 Superalloy Steel Tubes, committed to delivering premium quality and professional service.
Strict quality control under ISO 9001, ASME, and PED certification.
Aerospace-grade quality – meeting AMS 5589 and AMS 5590 specifications.
Oil & gas qualified – NACE MR0175, API 6A compliance.
Modern production lines and experienced technicians.
Complete testing, inspection, and documentation support
Flexible customization and surface finishing options (centerless grinding, polishing).
Fast production cycle and reliable global shipping.
Premium mill relationships – direct sourcing from Special Metals, ATI, Carpenter.
Full traceability – from melt to final tube, complete certification package.
Excellent weldability – the most weldable high-strength superalloy available.
