Womic Stainless Steel Co., Ltd
1. Enhanced Mechanical Strength
Nitrogen alloying significantly increases the yield strength of316N
Stainless Steel Pipe, making it suitable for high-pressure industrial
piping systems.
2. Excellent Corrosion Resistance
316N Stainless Steel Pipe maintains excellent resistance to pitting, crevice
corrosion, and chloride environments, similar to 316 stainless steel.
3. Improved Structural Stability
Nitrogen stabilizes the austenitic structure, improving durability and
resistance to deformation under high stress.
4. Superior Weldability and Fabrication
316N Stainless Steel Pipe offers good weldability and formability, suitable for
complex piping fabrication and industrial installation.
5. International Certification
Pipes can be certified byABS, BV, DNV, LR, GL, RINA, CCS, KR, and NK,
and are compliant withNORSOK standards for offshore projects.
The316N Stainless Steel Pipeproduced by Womic Steel conforms to multiple international specifications used in industrial and pressure applications.
|
Standard |
Description |
Equivalent Grade / Material Number |
|
ASTM A312 / A213 / A269 |
Stainless Steel Pipes and Tubes for pressure and general service |
TP316N |
|
EN 10216-5 |
Seamless stainless steel tubes for pressure purposes |
1.4406 (X5CrNiMoN17-12-2) |
|
DIN 17456 / DIN 17458 |
Austenitic stainless seamless tubes |
X5CrNiMoN17-12-2 |
|
JIS G3459 |
Stainless steel pipes for general service |
SUS316N |
|
GB/T 14976 / GB/T 13296 |
Seamless stainless pipes for fluid transport |
06Cr17Ni12Mo2N |
These standards ensure that316N Stainless Steel Pipemeets global requirements forchemical composition, mechanical performance, testing procedures, and dimensional tolerances.
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 |
Mo |
N |
|
316N Stainless Steel Pipe |
≤0.08 |
≤2.00 |
≤0.045 |
≤0.03 |
≤1.00 |
16.0–18.0 |
10.0–14.0 |
2.0–3.0 |
0.10–0.16 |
The addition of nitrogen significantly increases theyield strength and structural stability of 316N Stainless Steel Pipe, while maintaining excellent corrosion resistance similar to standard 316 stainless steel.
|
Property |
Unit |
316N |
|
Tensile Strength |
MPa |
≥620 |
|
Yield Strength |
MPa |
≥310 |
|
Elongation |
% |
≥35 |
|
Hardness (Brinell) |
HBW |
≤217 |
|
Density |
g/cm³ |
7.93 |
|
Melting Range |
°C |
1375–1400 |
316N Seamless & Welded Stainless Steel Pipe – Heat Treatment Condition
316N Stainless Steel Pipes are solution annealed at1040–1080°C
followed by rapid cooling.
This process restores corrosion resistance, improves ductility, and eliminates
internal stresses caused during forming or welding.
316N Stainless Steel Pipe is normally supplied inannealed and pickled conditionto ensure a clean surface and optimal corrosion resistance.
Upon request, the following finishes are available:
l Bright Annealed
l Polished
l Electropolished
l Passivated
Womic Steel adopts advanced production technology to ensure each316N Seamless Stainless Steel Pipemeets exact specifications and flawless surface quality.
1. Raw Material Selection:High-quality316NStainless Steel Pipe billets from 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 of Womic Steel’s316NSeamless Steel Pipe.
Womic Steel utilizes state-of-the-art manufacturing technology to ensure every316NWelded Stainless Steel Pipe meets precise specifications and delivers excellent surface quality and performance.
1. Raw Material Selection:High-quality316Nstainless steel strips/coils from certified suppliers (e.g., Baosteel, TISCO, POSCO).
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.
4. Weld Seam Treatment:The external weld bead is removed to achieve a smooth surface, and the internal bead may be controlled or treated for bore cleanliness.
5. Solution Annealing:A full heat treatment process is applied to dissolve carbides, restore corrosion resistance, and relieve stresses from welding and forming.
6. Sizing & Calibration:The pipe is passed through a sizing mill to achieve the final precise outer diameter and roundness.
7. Straightening:The pipe is straightened to ensure optimal linearity.
8. Pickling & Passivation:Chemical treatment removes scale and impurities, while promoting the formation of a protective passive oxide layer on the surface, including the weld zone.
9. Non-Destructive Testing (NDT):The weld seam is inspected using methods like Eddy Current or Ultrasonic Testing to ensure integrity and quality.
10. Final Inspection & Marking:Each pipe undergoes dimensional checks, visual inspection, and is marked with grade, heat number, and relevant standards before packaging.
This controlled process guarantees a consistent weld seam, excellent dimensional accuracy, and superior corrosion resistance for every batch of Womic Steel's316NWelded Steel Pipes.
Outside Diameter:6mm – 1219mm (1/4" – 48")
Wall Thickness:0.5mm – 50mm (SCH 5S – SCH XXS)
Length:Up to 12m(fixed or random)
Tolerances:According to ASTM A999 / EN ISO 1127
|
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.
|
316N Stainless Steel Pipe Surface Type |
316N Stainless 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 316N Stainless Steel Pipe surface is inspected for uniform gloss, absence of pits, and consistent finish quality.
Every316N 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 of the316NStainless 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 every 316N Stainless Steel Pipe from Womic Steel meets the highest international standards for reliability and longevity.
316N Stainless Steel Pipe is widely used in industries requiringhigh strength and corrosion resistance:
316N Stainless Steel Pipe for Chemical Industry:process pipelines and corrosion-resistant systems
316N Stainless Steel Pipe for Marine Engineering:seawater pipelines and offshore platforms
316N Stainless Steel Pipe for Power Plants:high-pressure heat exchanger tubing
316N Stainless Steel Pipe for Oil & Gas Industry:offshore drilling and transportation pipelines
316N Stainless Steel Pipe for Pressure Equipment:reactors, boilers, and pressure vessels
316N Stainless Steel Pipe for Structural Applications:high-load stainless steel structures
Each316NStainless 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 10,000tons.
5. Continuous cargo tracking and after-sales follow-up to ensure smooth arrival at destination.
Womic Steel is a trusted manufacturer and exporter specializing in316N Stainless 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.
