Womic Stainless Steel Co., Ltd
1.Corrosion and Oxidation Resistance:
Excellent resistance to oxidation and scaling at high temperatures, making it suitable for furnace and thermal processing equipment.
2.High Temperature Strength:
Superior mechanical stability and strength in elevated temperature environments.
3.Good Weldability and Fabrication:
309 stainless steel pipes can be welded and fabricated using conventional welding processes.
4.Surface Quality:
Smooth internal bore and uniform external surface suitable for industrial piping systems.
5.International Certification:
Pipes can be certified by ABS, BV, DNV, LR, GL, RINA, CCS, KR, and NK, and are also compliant with NORSOK standards for offshore projects when required.
The309 Stainless Steel Pipeproduced by Womic Steel conforms to multiple international specifications used in high-temperature industrial applications.
|
Standard |
Description |
Equivalent Grade / Material Number |
|
ASTM A312 / A213 / A269 |
Stainless Steel Pipes and tubes for pressure and high-temperature service |
TP309 |
|
EN 10216-5 |
Seamless stainless steel tubes for pressure purposes |
1.4828 (X15CrNiSi20-12) |
|
DIN 17456 / DIN 17458 |
Austenitic stainless seamless tubes |
X15CrNiSi20-12 |
|
JIS G3459 / G3463 |
Stainless steel pipes for heat-resisting service |
SUS309S |
|
GB/T 14976 |
Stainless steel seamless pipes for fluid transport |
0Cr23Ni13 |
These standards ensure that309 Stainless Steel Pipemeets global requirements for chemical composition, mechanical performance, dimensional tolerance, and inspection procedures.
Different specifications can be customized according to special requirements.
|
Execution Standard |
Main Standard |
Standard Grade |
|
GB (China) |
GB13296, GB/T14976, GB5310, GB/T21833 |
06Cr19Ni10, 022Cr19Ni10, 06Cr25Ni20, 07Cr17Ni12Mo2, 022Cr17Ni12Mo2, 07Cr19Ni11Nb, 022Cr22Ni5Mo3N |
|
NB (China Petrochemical Standard) |
NB/T 47019.1, NB/T 47019.5, NB/T 47019.6, NB/T 47019.7, NB/T 47019.9 |
06Cr19Ni10, 022Cr19Ni10, 06Cr25Ni20, 07Cr17Ni12Mo2, 06Cr19Ni13Mo3, 07Cr18Ni11Ti, 07Cr18Ni11Nb |
|
ASTM (USA) |
ASTM / ASME SA213,ASTM A249-24, ASTM A269,ASTM A312-24, ASTM A358-24, ASTM A376,ASTM A450,ASTM A511, ASTM B677, ASTM B622, ASTM B626, ASTM B464, ASTM B466,ASTM B677,ASTM A778-24, ASTM A813-24, ASTM A1016-23, ASTM A999-23, ASTM A789-24, ASTM A790-24 |
304 / 304L,304N,TP304H,TP309,TP310S,S 316 / 316L,TP316H,TP316N,TP316LN,TP316Ti, TP317L / 317,321 / 321H, 347 / 347H, S31254 (904L equivalent), S31803 (Duplex), S32205, S32750, S32760, S32404, S32550, S32520, S32900, S39274,UNS N08825, UNS N06625, UNS N10276,Alloy 20, Incoloy 800, Inconel 600, Inconel 690, Hastelloy B2, Alloy 200/201, Hastelloy C22 |
|
ASME (USA) |
SA/SB213, SA268, SA312, SA376, SA789, SA790, SB407, SB423, SB444, SB677 |
TP304/L/H, TP316/L/H/Ti, TP321/H, TP347/H, TP904L, S31254, S31803, S32205, S32750, S32760, N08810, N08825, N08020 |
|
EN / DIN (Europe) |
EN 10216-5, EN 10297-2, EN 10217-7 (2021),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), X2CrNiMoN22-5-3 (1.4462) |
|
JIS (Japan) |
JIS G3459, JIS G3463 |
SUS304/TP, SUS304LTP, SUS304HTB, SUS316/TP, SUS316LTP, SUS321TP, SUS347TP, SUS310STP |
|
GOST (Russia) |
GOST 9941, GOST 5632 |
08Х18Н10, 12Х18Н10Т, 10Х17Н13М2Т, 03Х17Н14М3, 08Х22Н6Т, 10Х17Н13М2Т, 03Х21Н21М4ГБ |
|
ISO (International) |
ISO 1127, ISO 9329-4 |
X2CrNi18-9, X2CrNiMo17-12-2, X2CrNiMoN22-5-3, X2CrNiMo17-13-3 |
|
Element |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
|
309 Stainless Steel Pipe |
≤0.20 |
≤2.00 |
≤0.045 |
≤0.03 |
≤1.00 |
22.0–24.0 |
12.0–15.0 |
The higher chromium and nickel content in309 Stainless Steel Pipeprovides superior oxidation resistance and improved performance in high-temperature service environments.
The309 Stainless Steel Pipeoffers stable strength and good ductility for industrial and thermal applications.
|
Property |
Unit |
309 |
|
Tensile Strength |
MPa |
≥515 |
|
Yield Strength |
MPa |
≥205 |
|
Elongation |
% |
≥40 |
|
Hardness (Brinell) |
HBW |
≤217 |
|
Density |
g/cm³ |
7.98 |
|
Melting Range |
°C |
1398–1454 |
309 stainless steel pipes are typicallysolution annealed at 1040–1100°C followed by rapid cooling.
This heat treatment restores corrosion resistance, improves ductility, and ensures stable microstructure for high-temperature service environments.
Pipes are normally supplied inannealed and pickled condition, providing a clean surface and excellent corrosion resistance. Bright annealed or polished finishes can be supplied upon request.
Womic Steel adopts advanced production technology to ensure each309 Seamless Stainless Steel Pipemeets exact specifications and flawless surface quality.
1.Raw Material Selection: High-quality309
Stainless Steel Pipe billetsfrom certified mills (Baosteel, TISCO,
POSCO).
2.Heating and Piercing: Billets heated to a controlled temperature and pierced
using a rotary piercing mill to form hollow shells.
3.Hot Rolling: Shells elongated and rolled to desired size.
4.Cold Drawing / Cold Pilgering: Pipes refined to precise dimensions and improved
surface finish.
5.Solution Annealing: Heat treatment to restore corrosion resistance and
ductility.
6.Pickling & Passivation: Removal of oxides and creation of passive film
for enhanced corrosion protection.
7.Straightening and Dimensional Calibration: Ensures consistent roundness and
wall uniformity.
8.Final Inspection & Marking: Each pipe tested, marked with grade, heat
number, and standard before packing.
This process guarantees a smooth internal bore, high structural integrity, and exceptional corrosion resistance across all batches ofWomic Steel’s 309 Seamless Steel Pipe.
Womic Steel utilizes state-of-the-art manufacturing technology to ensure every309 Welded Stainless Steel Pipemeets precise specifications and delivers excellent surface quality and performance.
1.Raw Material Selection: High-quality309 stainless steel strips/coilsfrom certified suppliers (e.g., Baosteel, TISCO, POSCO).10.Final Inspection & Marking: Each pipe undergoes dimensional checks and visual inspection before packaging.
• Wall Thickness:0.5mm –
50mm (SCH 5S – SCH XXS)
• Length:Up to 12m (fixed or random)
• Tolerances: According toASTM A999 / EN ISO
1127
Standard pipe dimensions followANSI B36.19 and ANSI B36.10.
|
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 wide range of surface finishes to meet various industrial, sanitary, and decorative applications.
|
309Stainless Steel Pipe Surface Type |
309Stainless Steel Pipe Description |
|
Annealed & Pickled (AP Finish) |
Bright silver appearance after acid treatment, suitable for industrial piping. |
|
Bright Annealed (BA Finish) |
Mirror-like surface obtained through controlled atmosphere annealing. |
|
Polished Finish (180#, 240#, 320#, 400#, 600#) |
Smooth mechanical finish suitable for decorative and architectural use. |
|
Mirror Polished (8K) |
Ultra-reflective surface ideal for sanitary and high-end design. |
|
Brushed / Hairline Finish |
Satin linear texture for furniture and interior design. |
|
Passivated Finish |
Surface chemically treated to enhance corrosion protection. |
|
Electropolished Finish |
Extremely clean, smooth, and hygienic finish ideal for food and pharmaceutical equipment. |
Each 316 and 316L Stainless Steel Pipe surface is inspected for uniform gloss, absence of pits, and consistent finish quality.
Every309 Stainless Steel Pipeundergoes comprehensive inspection in accordance with ASTM, EN, and GB standards to guarantee reliability and performance:
l Visual & Dimensional Inspection:Surface, roundness, and thickness checked.
l Hydrostatic Pressure Test:100% tested for leakage and pressure resistance.
l Eddy Current Test:Detects surface and sub-surface imperfections.
l Ultrasonic Test (UT):Ensures internal integrity of the seamless structure.
l Positive Material Identification (PMI):Confirms correct chemical grade of309Stainless Steel Pipe.
l Intergranular Corrosion Test (IGC):Validates resistance to sensitization.
l Flattening & Flaring Tests:Evaluate ductility and deformation capability.
l Hardness & Tensile Testing:Confirms mechanical compliance with ASTM standards.
l Surface Roughness and Cleanliness Check:For sanitary or polished tubes.
l Third-Party Inspection (SGS / BV / TUV):Available upon customer request.
These extensive tests ensure that every309Stainless Steel Pipe from Womic Steel meets the highest international standards for reliability and longevity.
309 Stainless Steel Pipe is widely used in industries requiring high temperature strength and oxidation resistance:
309 Stainless Steel Pipe for Furnace Equipment: High-temperature furnace tubes and heating systems.
309 Stainless Steel Pipe for Petrochemical Industry: High-temperature process piping and refinery equipment.
309 Stainless Steel Pipe for Heat Exchanger Systems: Boilers, heaters, condensers, and thermal processing equipment.
309 Stainless Steel Pipe for Power Plants: High-temperature steam pipelines and thermal power systems.
309 Stainless Steel Pipe for Industrial Heating Systems: Heat treatment furnaces and industrial kilns.
309 Stainless Steel Pipe for Chemical Processing Plants: Corrosion-resistant piping systems exposed to elevated temperatures.
309 Stainless Steel Pipe for Oil and Gas Industry: High-temperature refinery pipelines and processing units.
Each 309 Stainless Steel Pipe is securely packed and clearly labeled to ensure safe and efficient transport worldwide.
General packaging: Bundle packing with woven fabric, iron strip bundle, plastic cap on two ends for local truck transport.
Hexagonal packaging: Bundle packing with woven fabric, iron strip bundle, plastic cap on two ends for local truck transport.
Packaging of welded pipe in medium and large sizes: Wrapped with woven fabric by automatic packaging for export sea-worthy transport.
Packaging for medium and large size welded pipes to be exported: Wooden or steel crate packaging for export sea-worthy transport.
General packaging for products to be exported: Wooden box for export sea-worthy transport.
Packaging of condensation pipe and low-pressure heater tube: Wooden box for local truck and export sea-worthy transport.
1. Direct cooperation with global shipowners ensures the most competitive freight rates.
2. Professional loading and securing teams guarantee damage-free shipment.
3. Efficient document preparation, minimizing customs delays.
4. Rapid delivery time — standard sizes kept in ready stock more than 10,000 tons.
5. Continuous cargo tracking and after-sales follow-up to ensure smooth arrival at destination.
Womic Steel is a trusted manufacturer and exporter specializing in 309Stainless Steel Pipe,committed to delivering premium quality and professional service.
l Strict quality control under ISO and PED certification.
l Modern production lines and experienced technicians.
l Complete testing, inspection, and documentation support.
l Flexible customization and surface finishing options.
l Fast production cycle and reliable global shipping.
For inquiries, technical support, or to request a quotation for your specific clad pipe requirements, 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.
