Womic Stainless Steel Co., Ltd
Exceptional High-Temperature Oxidation Resistance:
High chromium (14–17%) content provides outstanding resistance to oxidation and scaling up to 1100°C (2012°F) in continuous service, significantly outperforming Alloy 625 and all stainless steel grades.
Outstanding Resistance to Carburization and Nitriding:
High nickel content (≥72%) provides excellent resistance to carbon absorption (carburization) and nitrogen absorption (nitriding) at elevated temperatures, making it ideal for furnace and heat treatment applications.
Excellent Chloride Stress Corrosion Cracking Resistance:
High nickel content (≥72%) provides outstanding resistance to chloride-induced SCC, significantly outperforming all stainless steel grades and comparable to Alloy 825 and Alloy 625.
Superior Resistance to Caustic and Alkaline Environments:
Excellent performance in sodium hydroxide (NaOH), potassium hydroxide (KOH), and other caustic environments at elevated temperatures, making it the preferred material for caustic evaporators and concentrators.
Good High-Temperature Mechanical Strength:
Maintains excellent mechanical properties up to 1000°C (1832°F), with good creep resistance and thermal stability.
Excellent Resistance to Hydrogen Attack:
High nickel content provides outstanding resistance to hydrogen attack and hydrogen embrittlement at elevated temperatures.
Good Heat Transfer Efficiency:
Thermal conductivity comparable to other nickel alloys, with reliable heat transfer performance in high-temperature applications.
Good Weldability:
Nickel-chromium alloy offers good weldability with matching filler metals (ERNiCr-3 or ERNiCrFe-5). No post-weld heat treatment required for most applications.
Excellent Resistance to Thermal Fatigue:
Outstanding thermal cycling resistance, making it suitable for intermittent high-temperature service.
Precision Dimensional Accuracy:
Strict tolerances on outside diameter (OD), wall thickness, and concentricity ensure proper fitment in tube sheets.
International Certification:
Tubes can be certified by ABS, BV, DNV, LR, GL, RINA, CCS, KR, and NK, and comply with ASME Boiler & Pressure Vessel Code Section VIII and NACE MR0175/ISO 15156 (limited sour service) standards.
The Alloy 600 Heat Exchanger Tubes produced by Womic Steel conform to multiple international specifications used in high-temperature heat transfer equipment, furnaces, and pressure vessels:
|
Standard |
Description |
Equivalent Grade / Material Number |
|
ASTM B163 / ASME SB163 |
Seamless nickel and nickel alloy condenser and heat exchanger tubes |
UNS N06600 (Alloy 600) |
|
ASTM B167 / ASME SB167 |
Seamless nickel-chromium-iron alloy pipe and tube |
UNS N06600 |
|
ASTM B516 |
Welded nickel-chromium-iron alloy tubes |
UNS N06600 |
|
EN 10216-5 |
Seamless stainless steel tubes for pressure purposes (nickel alloy section) |
2.4816 (NiCr15Fe) |
|
DIN 17751 |
Nickel alloy tubes |
NiCr15Fe (2.4816) |
|
ISO 6207 |
Nickel alloy seamless tubes |
NiCr15Fe |
|
ASME Section II |
Boiler and pressure vessel code |
SB163 N06600 |
|
NACE MR0175 / ISO 15156 |
Sour service compliance (limited conditions) |
Alloy 600 |
These standards ensure that Alloy 600 Heat Exchanger Tubes meet global requirements for chemical composition, mechanical performance, dimensional accuracy, hydrostatic testing, and non-destructive examination.
Different specifications can be customized according to special requirements.
|
Execution Standard |
Main Standard |
Standard Grade |
|
ASTM (USA) |
ASTM B163, B167, B423, B444, A213, A789 |
Alloy 600, Alloy 625, Alloy 825, Alloy 400, TP304/L, TP316/L, S31803, S32205, S32750 |
|
ASME (USA) |
SB163, SB167, SB423, SB444, SA213, SA789 |
Alloy 600, Alloy 625, Alloy 825, TP304/L/H, TP316/L/H, S31803, S32205, S32750 |
|
EN / DIN (Europe) |
EN 10216-5, EN 10217-7 |
2.4816 (Alloy 600), 2.4856 (Alloy 625), 2.4858 (Alloy 825), 1.4404, 1.4462 |
|
ISO (International) |
ISO 6207, ISO 9329-4 |
NiCr15Fe (Alloy 600), NiCr22Mo9Nb (Alloy 625), NiCr21Mo (Alloy 825) |
|
Element |
Ni |
Cr |
Fe |
C |
Mn |
P |
S |
Si |
Cu |
Co |
|
Alloy 600 |
≥72.0 |
14.0–17.0 |
6.0–10.0 |
≤0.15 |
≤1.0 |
≤0.015 |
≤0.015 |
≤0.50 |
≤0.50 |
— |
Note: Alloy 600 (UNS N06600) is a high-nickel (≥72%) chromium alloy with controlled iron content. Compared to other heat exchanger tube grades:
|
Property |
TP310S |
Alloy 825 |
Alloy 625 |
Alloy 600 |
|
Nickel (%) |
19–22 |
38–46 |
≥58 |
≥72 |
|
Chromium (%) |
24–26 |
19.5–23.5 |
20–23 |
14–17 |
|
Maximum Service Temp (°C) |
1050 |
540 |
980 |
1100 |
|
Oxidation Resistance |
Good |
Good |
Excellent |
Excellent |
|
Carburization Resistance |
Poor |
Fair |
Good |
Excellent |
|
Caustic/Alkaline Resistance |
Poor |
Good |
Good |
Excellent |
|
Cost |
Low |
Very High |
Premium |
High |
Comparison of Maximum Service Temperatures:
|
Grade |
Maximum Continuous Service (°C) |
Oxidation Resistance |
Carburization Resistance |
|
TP310S |
1050°C (1922°F) |
Good |
Poor |
|
Alloy 825 |
540°C (1000°F) |
Good |
Fair |
|
Alloy 625 |
980°C (1800°F) |
Excellent |
Good |
|
Alloy 600 |
1100°C (2012°F) |
Excellent |
Excellent |
The Alloy 600 Heat Exchanger Tube offers excellent mechanical properties and high-temperature strength for demanding heat transfer applications.
|
Property |
Unit |
Alloy 600 (Annealed) |
|
Tensile Strength (min) |
MPa |
≥550 |
|
Yield Strength (0.2% offset, min) |
MPa |
≥205 |
|
Elongation (min) |
% |
≥30 |
|
Hardness (typical) |
HBW |
≤180 |
|
Density |
g/cm³ |
8.42 |
|
Melting Range |
°C |
1350–1410 |
|
Thermal Conductivity (20°C) |
W/m·K |
14.9 |
|
Thermal Conductivity (100°C) |
W/m·K |
15.9 |
|
Thermal Conductivity (500°C) |
W/m·K |
20.5 |
|
Thermal Conductivity (1000°C) |
W/m·K |
29.0 |
|
Coefficient of Thermal Expansion (20–100°C) |
μm/m·K |
13.3 |
|
Coefficient of Thermal Expansion (20–500°C) |
μm/m·K |
14.5 |
|
Coefficient of Thermal Expansion (20–1000°C) |
μm/m·K |
16.0 |
|
Specific Heat Capacity (20°C) |
J/kg·K |
460 |
|
Electrical Resistivity (20°C) |
μΩ·m |
1.03 |
|
Modulus of Elasticity (20°C) |
GPa |
207 |
High-Temperature Tensile Properties (Typical Values) :
|
Temperature (°C) |
Tensile Strength (MPa) |
Yield Strength (MPa) |
|
20 |
650–750 |
250–350 |
|
200 |
620–700 |
220–300 |
|
400 |
580–660 |
200–280 |
|
500 |
560–640 |
190–270 |
|
600 |
520–600 |
180–260 |
|
700 |
450–520 |
150–220 |
|
800 |
350–420 |
100–160 |
|
900 |
250–320 |
70–120 |
|
1000 |
160–220 |
50–80 |
|
1100 |
100–150 |
30–50 |
Creep Rupture Strength (Typical Values) :
|
Temperature (°C) |
10,000 Hour Stress (MPa) |
100,000 Hour Stress (MPa) |
|
600 |
120–150 |
90–110 |
|
700 |
60–80 |
40–50 |
|
800 |
30–40 |
15–25 |
|
900 |
15–20 |
8–12 |
Maximum Recommended Service Temperatures:
|
Service Type |
Maximum Temperature |
|
Continuous Service (Oxidizing Atmosphere) |
1100°C (2012°F) |
|
Continuous Service (Reducing Atmosphere) |
1000°C (1832°F) |
|
Caustic/Alkaline Service |
540°C (1000°F) |
|
Sour Service (NACE MR0175) |
232°C (450°F) – limited |
|
Minimum Service Temperature |
-196°C (-321°F) |
Critical Note: Alloy 600 has the highest maximum continuous service temperature (1100°C) among all heat exchanger tube materials offered by Womic Steel. It significantly outperforms Alloy 625 (980°C max) and TP310S (1050°C max) in high-temperature oxidation, carburization, and nitriding resistance.
Heat Treatment
Condition:
Alloy 600 Heat Exchanger Tubes are normally supplied in the annealed condition (solution
annealed at 980–1040°C) followed by rapid cooling (water quenching or rapid air
cooling). This heat treatment:
l Dissolves precipitated carbides and intermetallic phases.
l Relieves internal stresses from cold drawing or cold pilgering.
l Restores optimum corrosion resistance and ductility.
l Optimizes the microstructure for high-temperature service.
Critical Note: Alloy 600 is not precipitation-hardenable; its high-temperature strength is derived from solid solution strengthening. Unlike Alloy 625, Alloy 600 does not rely on niobium for stabilization. This makes it particularly suitable for extremely high-temperature applications where long-term microstructural stability is required.
Delivery Condition:
Tubes are normally supplied in annealed and pickled condition, providing a clean,
smooth surface and good corrosion resistance. Upon request, bright annealed (BA) finish
can be provided for applications requiring ultra-clean internal surfaces.
Womic Steel adopts advanced production technology to ensure each Alloy 600 Heat Exchanger Tube meets exact specifications with flawless surface quality and precise dimensional accuracy.
· Raw Material Selection: High-quality Alloy 600 (UNS N06600) nickel alloy billets from certified premium mills (Special Metals, VDM Metals, Haynes International) with certified chemical composition (Ni ≥72%, Cr 14–17% verification) and traceability.
· Heating and Piercing: Billets heated to a controlled high temperature (due to high nickel content) and pierced using a rotary piercing mill to form hollow shells. Temperature control is critical.
· Hot Rolling: Shells elongated and rolled to desired intermediate size with strict temperature control. High-nickel alloys require careful reduction rates.
· Cold Drawing / Cold Pilgering: Tubes refined to precise dimensions with improved surface finish. Multiple passes with intermediate annealing required due to work hardening.
· Solution Annealing: Heat treatment at 980–1040°C to dissolve carbides and restore properties. Performed in controlled atmosphere furnaces for bright annealed finish.
· Pickling & Passivation: Removal of oxides using specialized pickling acids optimized for high-nickel alloys; thorough rinsing required.
· Straightening and Dimensional Calibration: Ensures consistent roundness, straightness, and wall uniformity. Special attention to OD tolerance for tube sheet fitment.
· Cutting and End Finishing: Tubes cut to precise lengths with square ends, deburred, and prepared for tube sheet insertion.
· Final Inspection & Marking: Each tube tested, marked with grade, heat number, standard, and tube dimensions before packing.
This process guarantees a smooth internal bore, high structural integrity, precise dimensional accuracy, and exceptional high-temperature performance across all batches of Womic Steel’s Alloy 600 Heat Exchanger Tubes.
Womic Steel utilizes state-of-the-art manufacturing technology to ensure every Welded Alloy 600 Heat Exchanger Tube meets precise specifications and delivers excellent surface quality and performance.
1. Raw Material Selection: High-quality Alloy 600 (UNS N06600) nickel alloy strips/coils from certified premium mills with full traceability.
2. Slitting & Uncoiling: Precision slitting to required width; edge preparation to ensure clean, burr-free edges for welding.
3. Forming & Welding: The strip is progressively formed into a cylindrical shape. The edges are welded using advanced TIG or Plasma welding with:
l Strict heat input control
l Shielding gas: Argon + Helium blend for optimal penetration
l Matching filler metal: ERNiCr-3 (Alloy 600 filler) or ERNiCrFe-5 for optimal weld properties
l Back purge with argon to protect weld root
4. Weld Seam Treatment: External weld bead removal to achieve smooth surface flush with base metal. Internal bead may be controlled or removed.
5. Solution Annealing: Full heat treatment of the entire welded tube at 980–1040°C followed by rapid cooling – essential for restoring corrosion resistance and relieving weld stresses.
6. Sizing & Calibration: The tube is passed through a sizing mill to achieve final precise OD and roundness.
7. Straightening: The tube is straightened to ensure optimal linearity for tube sheet insertion.
8. Non-Destructive Testing (NDT) : Weld seam inspected using Eddy Current Testing (ECT) or Ultrasonic Testing (UT). 100% of tube length tested.
9. Hydrostatic Testing: Each tube pressure tested to verify leak-tight integrity.
10.Final Inspection & Marking: Complete dimensional check, visual inspection, and traceable marking.
This controlled process guarantees a sound weld seam, excellent dimensional accuracy, smooth internal surface, and superior high-temperature performance for every batch of Womic Steel’s Welded Alloy 600 Heat Exchanger Tubes.
1. Outside Diameter (OD) : 6.0mm – 114.3mm (1/4″ – 4″)
l Common sizes: 9.53mm (3/8″), 12.70mm (1/2″), 15.88mm (5/8″), 19.05mm (3/4″), 25.40mm (1″), 31.80mm (1-1/4″), 38.10mm (1-1/2″), 44.50mm (1-3/4″), 50.80mm (2″)
2. Wall Thickness (WT) : 0.5mm – 5.0mm (BWG 10 – BWG 22)
l Common BWG gauges: 10, 11, 12, 13, 14, 15, 16, 18
3. Length: Up to 30m (straight lengths); U-bent tubes available per customer drawing
4. OD Tolerances:
l Standard: ±0.10mm
l Precision: ±0.05mm (upon request)
5. Wall Thickness Tolerances:
l Standard: ±10% of nominal
l Precision: ±8% of nominal (upon request)
6. Straightness: 0.5mm per 1000mm length typical, tighter upon request
7. Surface Roughness (Internal) :
l Standard: Ra ≤ 0.8μm
l Bright Annealed: Ra ≤ 0.4μm (upon request)
|
ANSI B 36.19/ANSI B36.10 DIMENSIONS OF SEAMLESS &WELDED STAINLESS STEEL PIPE |
|||||||||||||||||||
|
公称尺寸 |
外径 |
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 range of surface finishes for Alloy 600 heat exchanger tubes, each suited to specific high-temperature and industrial applications.
|
Surface Type |
Description |
Typical Applications |
|
Annealed & Pickled (AP Finish) |
Standard industrial finish – matte, oxide-free after acid treatment. |
High-temperature heat exchangers, furnace tubes, superheaters. |
|
Bright Annealed (BA Finish) |
Mirror-like surface obtained through controlled atmosphere annealing. |
High-purity applications requiring ultra-clean surfaces. |
|
Polished Finish (180#, 240#, 320#) |
Smooth mechanical finish, reduced surface roughness. |
Reduced fouling applications, specialized service. |
|
Passivated Finish |
Surface chemically treated to enhance the protective passive film. |
Critical high-temperature service. |
Each Alloy 600 Heat Exchanger Tube surface is inspected for uniform appearance, absence of pits, scratches, and consistent finish quality. Internal surface roughness (Ra) can be certified upon request.
Every Alloy 600 Heat Exchanger Tube undergoes comprehensive inspection in accordance with ASTM B163, EN 10216-5, and ASME standards:
|
Test / Inspection |
Description |
Applicability |
|
Visual & Dimensional Inspection |
Surface finish, OD, WT, length, roundness, straightness checked. |
100% |
|
Hydrostatic Pressure Test |
100% tested for leakage and pressure resistance. |
100% |
|
Pneumatic Pressure Test |
Air pressure test under water for leak detection (optional). |
Upon request |
|
Eddy Current Test (ECT) |
Detects surface and sub-surface imperfections. |
100% |
|
Ultrasonic Test (UT) |
Ensures internal integrity of tube wall. |
Upon request |
|
Positive Material Identification (PMI) |
Confirms correct chemical grade (Ni ≥72%, Cr 14–17% verification). |
100% (per heat) |
|
Intergranular Corrosion Test (IGC) |
ASTM G28 – validates resistance to intergranular corrosion. |
Per heat / batch |
|
Flattening Test |
Evaluates ductility and deformation capability. |
Per heat / batch |
|
Flaring Test |
Evaluates ability to expand without cracking. |
Per heat / batch |
|
Hardness Testing |
Brinell (HBW) – confirms mechanical compliance. |
Per heat / batch |
|
Tensile Testing |
Confirms ≥550 MPa UTS and ≥205 MPa yield strength. |
Per heat / batch |
|
High-Temperature Tensile Testing |
Optional – verifies high-temperature strength. |
Upon request |
|
Creep Rupture Testing |
Long-term creep strength verification. |
Upon request |
|
Surface Roughness Check (Ra) |
For polished or BA tubes – profilometer measurement. |
Upon request |
|
Third-Party Inspection |
SGS / BV / DNV / TUV / LR – witnessed testing. |
Upon customer request |
These extensive tests ensure that every Alloy 600 Heat Exchanger Tube from Womic Steel meets the highest international standards for reliability, high-temperature performance, and longevity.
Alloy 600 Heat Exchanger Tubes are specified for the most demanding high-temperature applications where oxidation, carburization, and nitriding resistance are critical:
|
Industry |
Typical Applications |
|
Petrochemical & Refining |
Furnace tubes, radiant tubes, convection section tubes, ethylene cracking furnace tubes, reformer tubes, high-temperature heat exchangers, transfer line exchangers. |
|
Heat Treatment Furnaces |
Radiant tubes, muffles, retorts, furnace rollers, annealing furnace tubes, carburizing furnace components, nitriding furnace components, brazing furnace components. |
|
Chemical Processing |
Caustic evaporators and concentrators (sodium hydroxide, potassium hydroxide), alkaline heat exchangers, chlorine production heat exchangers, vinyl chloride monomer (VCM) heat exchangers. |
|
Power Generation |
Superheater tubes, reheater tubes, boiler tubes for high-temperature sections, nuclear steam generator tubes (PWR), heat recovery steam generators (HRSG) – high-temperature zones. |
|
Nuclear Power |
Steam generator tubes (Alloy 600 has extensive history in PWR nuclear plants), reactor coolant system heat exchangers. |
|
Steel Industry |
Heat exchanger tubes for annealing furnaces, pickling line heat recovery, continuous galvanizing line furnaces, hydrogen annealing furnaces. |
|
Cement Industry |
Clinker cooler heat exchangers, preheater cyclones, kiln components. |
|
Ceramic Industry |
Kiln furniture, kiln heat exchangers, high-temperature drying systems. |
|
Waste Incineration |
Heat recovery boiler tubes, superheater tubes in waste-to-energy plants, flue gas heat exchangers. |
|
Marine Engineering |
High-temperature exhaust gas heat exchangers, boiler superheaters (ship classification certifications available from ABS, BV, DNV, LR, GL, RINA, CCS, KR, NK). |
|
Hydrogen Production |
Steam methane reformer (SMR) tubes, reformer heat exchangers, high-temperature hydrogen coolers, hydrogen attack resistance applications. |
|
Glass Industry |
Glass melting furnace heat exchangers, recuperators, forehearth tubes. |
|
Aerospace |
Engine heat exchangers, high-temperature hydraulic systems, exhaust gas heat recovery. |
Each Alloy 600 Heat Exchanger Tube is packed with the highest level of care due to the high value and critical nature of these premium products.
|
Packaging Type |
Description |
Suitable For |
|
Bundle Packing (Hexagonal) |
Hexagonal bundle with woven fabric wrapping, iron strip bundle, plastic cap on both ends. |
Local truck transport. |
|
Bundle Packing (Square) |
Square bundle with steel straps, plastic end caps, moisture barrier paper. |
Export sea-worthy transport. |
|
Wooden Crate Packing |
Wooden crates with foam padding, individual tube separation, plastic end caps. Mandatory for Alloy 600. |
High-value tubes, BA finish, long-length tubes. |
|
Steel Crate Packing |
Reinforced steel crates with internal padding. |
Heavy-wall tubes, multiple-bundle consolidation. |
|
U-Bend Tube Packing |
Custom wooden crates with support saddles to maintain bend radius. |
U-bent heat exchanger tubes. |
· End Protection: Plastic caps on both ends for all tubes
· Moisture Protection: VCI paper and moisture barrier wrapping for sea freight
· Padding: Foam padding between tube layers in crates
· Labeling: Grade, heat number, standard, dimensions, PO number
· Documentation: Packing list, material test reports (MTR), inspection certificates
Direct cooperation with global shipowners ensures the most competitive freight rates.
Professional loading and securing teams – special care for tube bundles to prevent bending, scratching, and end damage.
Efficient document preparation – EN 10204 3.1/3.2 certificates, MTR, PMI reports – minimizing customs delays.
Rapid delivery time – select sizes of Alloy 600 maintained in ready stock.
Continuous cargo tracking and after-sales follow-up to ensure smooth arrival at destination.
Custom length cutting available upon request – up to 30m straight lengths.
U-bend tube fabrication – custom bending per customer drawing with full heat treatment after bending.
Womic Steel is a trusted manufacturer and exporter specializing in high-nickel alloy heat exchanger tubes, committed to delivering premium quality and professional service for the world’s most demanding high-temperature heat transfer applications.
1. Strict quality control under ISO 9001, PED 2014/68/EU, and ASME Boiler & Pressure Vessel Code certification.
2. High-nickel alloy expertise – specialized knowledge in ≥72% nickel alloy heat treatment and high-temperature performance optimization.
3. Modern production lines – cold pilger mills, TIG welded tube mills, bright annealing furnaces.
4. Complete in-house testing – including PMI, mechanical testing, IGC testing, and optional high-temperature testing.
5. Highest service temperature – continuous service up to 1100°C (2012°F), the highest among all Womic Steel heat exchanger tube materials.
6. Superior carburization and nitriding resistance – ideal for furnace and heat treatment applications.
7. Excellent caustic/alkaline resistance – preferred material for sodium hydroxide and potassium hydroxide service.
8. Outstanding oxidation resistance – outperforms all stainless steel grades at elevated temperatures.
9. No post-weld heat treatment required – simplifies fabrication and field installation.
10.Flexible customization – special OD, WT, length, surface finish (BA, polished), U-bends.
11.Fast production cycle – seamless and welded tube manufacturing with competitive lead times.
12.Reliable global shipping – to all major ports (Houston, Rotterdam, Singapore, Shanghai, Dubai, etc.).
13.Direct mill relationships – competitive pricing for premium nickel alloy products.
14.Wide material range – from stainless steel to Duplex, Super Duplex, Alloy 825, Alloy 625, Alloy 600, Alloy C276, and more.
