Womic Stainless Steel Co., Ltd
Excellent Heat Transfer Efficiency:
Smooth internal and external surfaces with consistent wall thickness minimize thermal resistance and maximize heat transfer coefficients, improving overall system efficiency and reducing energy consumption.
Outstanding Corrosion Resistance:
Excellent resistance to pitting, crevice corrosion, and oxidation in a wide range of environments, including fresh water, seawater, chemical media, and high-temperature atmospheres.
High-Temperature Strength:
Maintains mechanical properties at elevated temperatures up to 870°C (1600°F), suitable for high-pressure and high-temperature heat exchanger service.
Weldability and Formability:
Austenitic stainless steel grades offer superior weldability for tube-to-tubesheet joining and excellent formability for tube expansion, rolling, and U-bending.
Precision Dimensional Accuracy:
Strict tolerances on outside diameter (OD), wall thickness, and concentricity ensure proper fitment in tube sheets and consistent heat transfer performance.
Smooth Internal Surface Finish:
Low surface roughness (Ra ≤ 0.4μm available) reduces fouling, improves cleanability, and enhances heat transfer efficiency, particularly for sanitary and high-purity applications.
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, NORSOK, and PED 2014/68/EU standards.
The Stainless Steel Heat Exchanger Tubes produced by Womic Steel conform to multiple international specifications used in heat transfer equipment, pressure vessels, and boiler applications:
|
Standard |
Description |
Equivalent Grade / Material Number |
|
ASTM A213 / ASME SA213 |
Seamless ferritic and austenitic alloy steel boiler, superheater, and heat exchanger tubes |
TP304/304L, TP316/316L, TP321/321H, TP347/347H, TP310S |
|
ASTM A269 / ASME SA269 |
Seamless and welded austenitic stainless steel tubes for general service |
TP304/304L, TP316/316L |
|
ASTM A249 / ASME SA249 |
Welded austenitic steel boiler, superheater, heat exchanger, and condenser tubes |
TP304/304L, TP316/316L, TP321, TP347 |
|
EN 10216-5 |
Seamless stainless steel tubes for pressure purposes |
1.4301/1.4307, 1.4401/1.4404, 1.4541, 1.4550 |
|
DIN 17458 |
Austenitic stainless seamless tubes for pressure purposes |
X5CrNi18-10, X2CrNi18-9, X5CrNiMo17-12-2, X2CrNiMo17-12-2 |
|
JIS G3463 |
Stainless steel boiler and heat exchanger tubes |
SUS304TB, SUS304LTB, SUS316TB, SUS316LTB, SUS321TB, SUS347TB |
|
GB/T 13296 |
Seamless stainless steel tubes for boiler and heat exchanger |
06Cr19Ni10, 022Cr19Ni10, 07Cr17Ni12Mo2, 022Cr17Ni12Mo2 |
|
ISO 9329-4 |
Seamless tubes for pressure purposes – austenitic stainless steel |
X2CrNi18-9, X2CrNiMo17-12-2 |
These standards ensure that Stainless Steel 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 A213, A269, A249, A312, A450, A1016 |
TP304/L, TP304H, TP316/L, TP316H, TP316Ti, TP321/H, TP347/H, TP310S, TP317L |
|
ASME (USA) |
SA213, SA249, SA268, SA789, SA790 |
TP304/L/H, TP316/L/H/Ti, TP321/H, TP347/H, S31803, S32205, S32750, S32760 |
|
EN / DIN (Europe) |
EN 10216-5, EN 10217-7, EN 10312 |
X2CrNi18-9 (1.4307), X5CrNi18-10 (1.4301), X2CrNiMo17-12-2 (1.4404), X5CrNiMo17-12-2 (1.4401), X6CrNiMoTi17-12-2 (1.4571) |
|
JIS (Japan) |
JIS G3463, JIS G3459 |
SUS304TB, SUS304LTB, SUS316TB, SUS316LTB, SUS321TB, SUS347TB, SUS310STB |
|
GB (China) |
GB/T 13296, GB/T 14976, GB5310 |
06Cr19Ni10, 022Cr19Ni10, 07Cr17Ni12Mo2, 022Cr17Ni12Mo2, 07Cr19Ni11Nb |
|
ISO (International) |
ISO 9329-4, ISO 1127 |
X2CrNi18-9, X2CrNiMo17-12-2, X2CrNiMoN22-5-3 |
|
Element |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
Ti |
Nb |
|
TP304 |
≤0.08 |
≤2.00 |
≤0.045 |
≤0.030 |
≤1.00 |
18.0–20.0 |
8.0–11.0 |
— |
— |
— |
|
TP304L |
≤0.03 |
≤2.00 |
≤0.045 |
≤0.030 |
≤1.00 |
18.0–20.0 |
8.0–12.0 |
— |
— |
— |
|
TP316 |
≤0.08 |
≤2.00 |
≤0.045 |
≤0.030 |
≤1.00 |
16.0–18.0 |
11.0–14.0 |
2.0–3.0 |
— |
— |
|
TP316L |
≤0.03 |
≤2.00 |
≤0.045 |
≤0.030 |
≤1.00 |
16.0–18.0 |
10.0–14.0 |
2.0–3.0 |
— |
— |
|
TP321 |
≤0.08 |
≤2.00 |
≤0.045 |
≤0.030 |
≤1.00 |
17.0–19.0 |
9.0–12.0 |
— |
≥5×C |
— |
|
TP347 |
≤0.08 |
≤2.00 |
≤0.045 |
≤0.030 |
≤1.00 |
17.0–19.0 |
9.0–13.0 |
— |
— |
≥10×C |
Note: The lower carbon content in TP304L and TP316L minimizes carbide precipitation during welding, providing enhanced resistance to intergranular corrosion compared to standard grades, especially in high-temperature or welded service environments. TP321 and TP347 are stabilized grades with titanium or niobium additions, offering superior resistance to intergranular corrosion in high-temperature service.
Stainless Steel Heat Exchanger Tubes offer balanced strength and ductility, making them suitable for forming, welding, expansion into tube sheets, and high-temperature service.
|
Property |
Unit |
TP304 |
TP304L |
TP316 |
TP316L |
TP321 |
TP347 |
|
Tensile Strength (min) |
MPa |
≥515 |
≥485 |
≥515 |
≥485 |
≥515 |
≥515 |
|
Yield Strength (min) |
MPa |
≥205 |
≥170 |
≥205 |
≥170 |
≥205 |
≥205 |
|
Elongation (min) |
% |
≥35 |
≥35 |
≥35 |
≥35 |
≥35 |
≥35 |
|
Hardness (Brinell, max) |
HBW |
≤201 |
≤201 |
≤201 |
≤192 |
≤201 |
≤201 |
|
Density |
g/cm³ |
7.93 |
7.93 |
7.93 |
7.93 |
7.93 |
7.93 |
|
Melting Range |
°C |
1400–1450 |
1400–1450 |
1375–1400 |
1375–1400 |
1400–1425 |
1400–1425 |
|
Thermal Conductivity (100°C) |
W/m·K |
16.2 |
16.2 |
16.3 |
16.3 |
16.1 |
16.1 |
Heat Treatment
Condition:
Stainless Steel Heat Exchanger Tubes are solution annealed at the following temperatures
followed by rapid cooling (water quenching or rapid air cooling):
|
Grade |
Solution Annealing Temperature |
|
TP304 / TP304L |
1010–1080°C |
|
TP316 / TP316L |
1040–1080°C |
|
TP321 / TP321H |
1050–1100°C |
|
TP347 / TP347H |
1050–1100°C |
This heat treatment:
1. Restores full corrosion resistance by dissolving chromium carbides.
2. Relieves internal stresses from cold drawing or cold pilgering.
3. Enhances ductility for tube expansion and rolling into tube sheets.
4. Prevents intergranular corrosion after welding and high-temperature service.
Delivery Condition:
Tubes are normally supplied in solution annealed and pickled condition, providing a
clean, smooth surface and excellent corrosion resistance. Upon request, bright annealed (BA) finish
can be provided for applications requiring ultra-clean internal surfaces. Polished finishes are
also available for enhanced cleanability and reduced fouling.
Womic Steel adopts advanced production technology to ensure each Stainless Steel Heat Exchanger Tube meets exact specifications with flawless surface quality and precise dimensional accuracy.
· Raw Material Selection: High-quality stainless steel billets from certified mills (Baosteel, TISCO, POSCO, Outokumpu) with certified chemical composition and traceability.
· Heating and Piercing: Billets heated to a controlled temperature and pierced using a rotary piercing mill to form hollow shells.
· Hot Rolling: Shells elongated and rolled to desired intermediate size.
· Cold Drawing / Cold Pilgering: Tubes refined to precise dimensions with improved surface finish. Multiple passes with intermediate annealing may be used for tight tolerance requirements.
· Solution Annealing: Heat treatment to restore corrosion resistance and ductility. Performed in controlled atmosphere furnaces for bright annealed finish.
· Pickling & Passivation: Removal of oxides and creation of passive film for enhanced corrosion protection. For BA finish, pickling is omitted.
· 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 corrosion resistance across all batches of Womic Steel’s Stainless Steel Heat Exchanger Tubes.
Womic Steel utilizes state-of-the-art manufacturing technology to ensure every Welded Stainless Steel Heat Exchanger Tube meets precise specifications and delivers excellent surface quality and performance.
1. Raw Material Selection: High-quality stainless steel strips/coils from certified suppliers (e.g., Baosteel, TISCO, POSCO, Outokumpu).
2. Slitting & Uncoiling: The steel coil is slit to the required width and uncoiled for feeding into the forming mill.
3. Forming & Welding: The strip is progressively formed into a cylindrical shape and the edges are welded together using advanced TIG or Plasma welding techniques to create a solid weld seam with full penetration.
4. Weld Seam Treatment: The external weld bead is removed to achieve a smooth surface flush with the base metal. The internal bead may be controlled or removed for applications requiring a smooth internal bore.
5. Solution Annealing: A full heat treatment process is applied to dissolve carbides, restore corrosion resistance, and relieve stresses from welding and forming. For welded heat exchanger tubes, this is critical for weld zone corrosion resistance.
6. Sizing & Calibration: The tube is passed through a sizing mill to achieve the final precise outer diameter and roundness. OD tolerance can be as tight as ±0.05mm.
7. Straightening: The tube is straightened to ensure optimal linearity for tube sheet insertion.
8. Non-Destructive Testing (NDT) : The weld seam is inspected using Eddy Current Testing (ECT) or Ultrasonic Testing (UT) to ensure integrity and quality. 100% of the tube length is tested.
9. Hydrostatic Testing: Each tube is pressure tested to verify leak-tight integrity.
10.Final Inspection & Marking: Each tube undergoes dimensional checks (OD, WT, length), visual inspection (internal and external surface), and is marked with grade, heat number, and relevant standards before packaging.
This controlled process guarantees a consistent weld seam with full penetration, excellent dimensional accuracy, smooth internal surface, and superior corrosion resistance for every batch of Womic Steel’s Welded Stainless Steel Heat Exchanger Tubes.
Outside Diameter (OD) : 6.0mm – 114.3mm (1/4″ – 4″)
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″)
Wall Thickness (WT) : 0.5mm – 5.0mm (BWG 8 – BWG 26)
Common BWG gauges: 10, 11, 12, 13, 14, 15, 16, 18, 20, 22
Length: Up to 30m (straight lengths); U-bent tubes available per customer drawing
OD Tolerances:
Standard: ±0.10mm
Precision: ±0.05mm (upon request)
Wall Thickness Tolerances:
Standard: ±10% of nominal
Precision: ±8% of nominal (upon request)
Straightness: 0.5mm per 1000mm length typical, tighter upon request
Surface Roughness (Internal) :
Standard: Ra ≤ 0.8μm
Polished / Bright Annealed: 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 industrial, sanitary, and high-purity applications.
|
Surface Type |
Description |
Typical Applications |
|
Annealed & Pickled (AP Finish) |
Bright silver appearance after acid treatment, oxide-free surface. |
General industrial heat exchangers, condensers, boilers. |
|
Bright Annealed (BA Finish) |
Mirror-like surface obtained through controlled atmosphere annealing (hydrogen or vacuum). No pickling required. |
Pharmaceutical, food processing, high-purity, and sanitary heat exchangers. |
|
Polished Finish (180#, 240#, 320#, 400#) |
Smooth mechanical finish, reduced surface roughness. |
Reduced fouling applications, food processing, dairy. |
|
Mirror Polished (8K) |
Ultra-reflective surface, extremely low roughness (Ra ≤ 0.2μm). |
High-purity pharmaceutical, semiconductor, biotechnology. |
|
Electropolished Finish |
Extremely clean, smooth, and hygienic finish with enhanced corrosion resistance. |
Pharmaceutical, biotech, ultra-pure water systems. |
|
Passivated Finish |
Surface chemically treated to enhance the protective passive film. |
Critical corrosion service, high-purity systems. |
Each Stainless Steel Heat Exchanger Tube surface is inspected for uniform gloss, absence of pits, scratches, and consistent finish quality. Internal surface roughness (Ra) can be certified upon request.
Every Stainless Steel Heat Exchanger Tube undergoes comprehensive inspection in accordance with ASTM, EN, and GB standards to guarantee reliability and performance:
|
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. Minimum test pressure per ASTM A213. |
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 in seamless and welded tubes. |
100% |
|
Ultrasonic Test (UT) |
Ensures internal integrity of the tube wall. |
Upon request |
|
Positive Material Identification (PMI) |
Confirms correct chemical grade (Cr, Ni, Mo content). |
100% (per heat) |
|
Intergranular Corrosion Test (IGC) |
Validates resistance to sensitization (ASTM A262 Practice E). |
Per heat / batch |
|
Flattening Test |
Evaluates ductility and deformation capability (per ASTM A450). |
Per heat / batch |
|
Flaring Test |
Evaluates ability to expand without cracking (per ASTM A450). |
Per heat / batch |
|
Reverse Flattening Test |
For welded tubes – evaluates weld seam ductility. |
Per heat / batch |
|
Hardness Testing |
Rockwell (HRB) or Brinell (HBW) – confirms mechanical compliance. |
Per heat / batch |
|
Tensile Testing |
Confirms tensile strength, yield strength, and elongation. |
Per heat / batch |
|
Surface Roughness Check (Ra) |
For sanitary, polished, or BA tubes – profilometer measurement. |
Upon request |
|
Cleanliness Test |
For pharmaceutical and food grade tubes – residue testing. |
Upon request |
|
Third-Party Inspection |
SGS / BV / TUV / DNV / LR – witnessed testing and certification. |
Upon customer request |
These extensive tests ensure that every Stainless Steel Heat Exchanger Tube from Womic Steel meets the highest international standards for reliability, longevity, and heat transfer performance
Stainless Steel Heat Exchanger Tubes are ideal for a wide variety of industries, offering long service life and corrosion resistance in demanding heat transfer conditions:
|
Industry |
Typical Applications |
|
Power Generation |
Condensers, feedwater heaters, moisture separator reheaters (MSR), cooling water systems, steam surface condensers. |
|
Chemical Processing |
Shell-and-tube heat exchangers, evaporators, crystallizers, reboilers, acid coolers, process heaters. |
|
Petrochemical & Refining |
Crude oil heaters, fractionator condensers, gas coolers, refinery heat exchangers, alkylation unit coolers. |
|
Marine Engineering |
Seawater-cooled condensers, ballast water heat exchangers, engine cooling systems, hydraulic oil coolers (ship classification certifications available from ABS, BV, DNV, LR, GL, RINA, CCS, KR, NK). |
|
HVAC & Refrigeration |
Chiller evaporators and condensers, air handling unit coils, cooling coils, heat recovery ventilators. |
|
Food & Beverage Industry |
Pasteurizers, sterilizers, milk cooling systems, brewing heat exchangers, CIP heating systems. |
|
Pharmaceutical Equipment |
Pure steam generators, water-for-injection (WFI) heat exchangers, sanitary process heaters, sterilizers. |
|
Desalination Plants |
Brine preheaters, brine heaters, multi-stage flash (MSF) evaporators, reverse osmosis preheaters. |
|
Pulp & Paper Industry |
Black liquor evaporators, digester heat exchangers, bleach plant heaters. |
|
Waste Heat Recovery |
Heat recovery steam generators (HRSG), economizers, waste heat boilers. |
Each Stainless Steel Heat Exchanger Tube is securely packed and clearly labeled to ensure safe and efficient transport worldwide. Special care is taken to protect tube ends, internal surfaces, and prevent bending during transit.
|
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, standard industrial tubes. |
|
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. |
High-value tubes, polished/BA finish, long-length tubes. |
|
Steel Crate Packing |
Reinforced steel crates with internal padding, suitable for heavy-wall and long tubes. |
Heavy tubes, multiple-bundle consolidation. |
|
Individual Tube Wrapping |
Each tube wrapped in VCI paper or plastic sleeve, with end caps, then bundled. |
High-purity, sanitary, and electropolished tubes. |
|
U-Bend Tube Packing |
U-bend tubes packed in 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 or moisture barrier wrapping for sea freight
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, inspection reports – minimizing customs delays.
Rapid delivery time – standard sizes (19.05mm x 1.65mm, 25.4mm x 2.11mm, etc.) kept in ready stock over 5,000 tons.
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.
Why Choose Womic Steel’s Stainless Steel Heat Exchanger Tube
Womic Steel is a trusted manufacturer and exporter specializing in stainless steel heat exchanger tubes, committed to delivering premium quality and professional service for the global heat transfer industry.
Strict quality control under ISO 9001, PED 2014/68/EU, and ASME Boiler & Pressure Vessel Code certification.
Modern production lines – cold pilger mills, TIG welded tube mills, bright annealing furnaces.
Experienced technicians – specialized in heat exchanger tube manufacturing with tight tolerances.
Complete testing, inspection, and documentation support – including 100% Eddy Current testing and hydrostatic testing.
Flexible customization – special OD, WT, length, surface finish (BA, polished, electropolished), U-bends.
Fast production cycle – seamless and welded tube manufacturing with competitive lead times.
Reliable global shipping – to all major ports (Houston, Rotterdam, Singapore, Shanghai, Dubai, etc.).
Direct mill pricing – no middlemen, ensuring competitive costs.
Wide material range – from TP304/304L and TP316/316L to TP321/321H, TP347/347H, Duplex 2205, Super Duplex 2507, and nickel alloys.
please contact us:
Website: www.womicstainless.com
E‑mail: info@womicstainless.com
Tel / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568
Womic Steel – Your reliable partner for high‑quality stainless steel seamless pipes, metallurgically bonded clad tubes, and custom solutions for corrosion‑resistant applications.
