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ASTM A269/270/213 TP316L Stainless Steel Seamless Tubes from China Suppliers | ZONSUN Factory

ZONSUN STEEL is a leading supplier and factory based in China, specializing in the export of high-quality ASTM A269/270/213 TP316L stainless steel seamless tubes. We adhere to international standards, ensuring our products meet the highest quality requirements. Our extensive stock is readily available for immediate shipment, and we guarantee fast delivery to meet your needs. Choose ZONSUN STEEL for reliable stainless steel solutions sourced directly from reputable suppliers in China

Product Detail

Introduction

ASTM A269 TP316L is the low-carbon variant of TP316, designed to eliminate intergranular corrosion (IGC) risks in welded components and sensitized structures. With a carbon content ≤0.035%, it avoids chromium carbide precipitation at grain boundaries, making it ideal for applications where post-weld heat treatment is impractical or corrosive conditions are extremely severe. The inclusion of 2.0–3.0% molybdenum (Mo) ensures superior resistance to pitting, crevice corrosion, and chemical attack, similar to TP316 but with enhanced weldability for critical environments.

Key Features

Low-Carbon Immunity to Intergranular Corrosion (IGC)

Carbon ≤0.035% means no chromium carbide (Cr23C6) precipitates at grain boundaries, even after welding or long-term exposure to sensitization temperatures. No post-weld heat treatment is required for most applications, reducing fabrication costs.

Molybdenum-Enhanced Localized Corrosion Resistance

Equivalent to TP316 in resistance to pitting/crevice corrosion in chloride environments (e.g., seawater, brine, or bleach solutions), making it suitable for harsh chemical processing.

Superior Weldability

Ideal for welded structures (e.g., pipelines, storage tanks) where heat-affected zones (HAZ) would otherwise become IGC-prone in higher-carbon grades. Commonly used in industries where non-destructive testing (NDT) of welds is critical but post-weld annealing is not feasible.

Wide Temperature Range Performance

Maintains ductility and toughness from cryogenic (−196°C, e.g., liquid nitrogen systems) to high-temperature service (up to ~650°C continuously, ~870°C short-term).

Austenitic Microstructure Purity

Fully austenitic matrix (no harmful phases like σ-phase) after solution annealing, ensuring uniform corrosion resistance and formability.

Material Specification

Standard ASTM A269 & A270 & A213

O.D 1/8" NB TO 32" NB, (10.29MM-812.80MM), (Customization Available)

W.T SCH 10S, SCH 40S, SCH 80S, SCH160, SCH XXS (Customization Available)

Application

Sanitary & Hygienic Systems
Food and Beverage Processing
Semiconductor & Electronics
Food & Dairy Plants
Pharmaceutical Plant
Maritime & Offshore Applications
Medical & Laboratory Equipment

End Plain End, Beveled End, Threaded

Processing Cut-to-length; Polishing.

Inspection

100% PMI TESTED
EN10204.3.1B MILL TEST CERTIFICATE
THIRD PARTY INSPECTION ACCEPTED

Delivery Condition Cold Drawn, Annealed and Pickled / Polished / Bright Annealed / Sand blasting / Shot Blasting.

Marking All SS SMLS Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or as per the customer’s request)

Packing Packed in Wooden Boxes, plywood cases, Steel Strips Bundled, or as per Customers Requests

Specials Sizes and Specifications other than above can be customized on request.

Specification Parameters

CHEMICAL COMPOSITION - TP316L (ASTM A269/A269M)

HEAT NO.		CHEMICAL COMPOSITION (%)
HEAT NO.		C	Mn	P	S	Si	Ni	Cr	Mo
STAND.	MIN.						10.00	16.00	2.0
STAND.	MAX.	0.035^B	2.00	0.045	0.030	1.00	15.00	18.00	3.0

CHEMICAL COMPOSITION - TP316L (ASTM A213 & A270)

HEAT NO.		CHEMICAL COMPOSITION (%)
HEAT NO.		C	Mn	P	S	Si	Ni	Cr	Mo
STAND.	MIN.						10.00	16.00	2.0
STAND.	MAX.	0.035^D	2.00	0.045	0.030	1.00	14.00	18.00	3.0

Mechanical Properties

Mechanical Properties
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness MAX
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Rockwell (HRB)	Brinell (HBW)
ASTM A269 TP316L				90	192
ASTM A213 TP316L	485	170	35	90	192
ASTM A270 TP316L	485	170	35	B90

Equivalent Grades - (ASTM A269 & A270 & A213 TP316L Equivalent Grades)

ASTM A269 & A270 & A213 TP316L Equivalent Grades
USA (ASTM / AISI)	Germany (DIN, WNr)	Japan (JIS)	France (AFNOR)	England (BS)	Euronorms (EN)	China (GB)	International (ISO)
TP316L 316L S31603	1.4404	SUS316L	Z2CND17-12	316S11	X2CrNiMo17-12-2	022Cr17Ni12Mo2	X2CrNiMo17-12-2 S31603

ASTM A269/A269M Standard Cold Machining Size Deviation Permitted

ASTM A269/A269M Standard cold machining size deviation permitted
Group	Size, Outside Diameter, in. [mm]	Permissible Variations in Outside Diameter, in. [mm]	Permissible Variations in Wall Thickness, A %	Permissible Variations in Cut Length, in. [mm] B		Thin Walled Tubes C
Group	Size, Outside Diameter, in. [mm]	Permissible Variations in Outside Diameter, in. [mm]	Permissible Variations in Wall Thickness, A %	Over	Under	Thin Walled Tubes C
1	Up to 1/2 [13]	±0.005 [0.13]	±15	1/8 [3.2]	0	...
2	1/2 to 1 1/2 [13 to 38], excl	±0.005 [0.13]	±10	1/8 [3.2]	0	less than 0.065 in. [1.65 mm] nominal
3	1 1/2 to 3 1/2 [38 to 89], excl	±0.010 [0.25]	±10	3/16 [4.8]	0	less than 0.095 in. [2.41 mm] nominal
4	3 1/2 to 5 1/2 [89 to 140], excl	±0.015 [0.38]	±10	3/16 [4.8]	0	less than 0.150 in. [3.81 mm] nominal
5	5 1/2 to 8 [140 to 203], excl	±0.030 [0.76]	±10	3/16 [4.8]	0	less than 0.150 in. [3.81 mm] nominal
6	8 to 12 [203 to 305], excl	±0.040 [1.01]	±10	3/16 [4.8]	0	less than 0.200 in. [5.08 mm] nominal
7	12 to 14 [305 to 356], excl	±0.050 [1.26]	±10	3/16 [4.8]	0	less than 0.220 in. [5.59 mm] nominal

ASTM A270/A270M Standard Cold Machining Size Deviation Permitted

ASTM A270/A270M Standard cold machining size deviation permitted
Size, Outside Diameter, in. [mm]	Permissible Variations in Outside Diameter, in. [mm]		Permissible Variations in Cut Length, in. [mm] A
Size, Outside Diameter, in. [mm]	Over	Under	Over	Under
1.000 [25] and under	0.005 [0.13]	0.005 [0.13]	1/8 [3]	0
Over 1 [25] to 2 [50]	0.008 [0.20]	0.008 [0.20]	1/8 [3]	0
Over 2 [50] to 3 [75]	0.010 [0.25]	0.010 [0.25]	1/8 [3]	0
Over 3 [75] to 4 [100]	0.015 [0.38]	0.015 [0.38]	1/8 [3]	0
Over 4 [100] to 5 1/2 [140], excl	0.015 [0.38]	0.015 [0.38]	3/16 [5]	0
5 1/2 [140] to 8 [200], excl	0.030 [0.75]	0.030 [0.75]	3/16 [5]	0
8 [200] to 12 [300]	0.050 [1.25]	0.050 [1.25]	3/16 [5]	0

Frequently Asked Questions (FAQ)

What makes ASTM A269 TP316L highly resistant to intergranular corrosion?

ASTM A269 TP316L features a low carbon content (≤0.035%), which prevents the precipitation of chromium carbides at grain boundaries during welding or exposure to high temperatures. This eliminates the risk of intergranular corrosion (IGC) without needing post-weld heat treatment.

Why is Molybdenum added to TP316L?

TP316L contains 2.0% to 3.0% molybdenum (Mo), which significantly enhances its resistance to localized corrosion, such as pitting and crevice corrosion, particularly in harsh chloride-rich environments like seawater or chemical processing plants.

What are the primary applications of ASTM A269 TP316L tubes?

Due to its high purity and corrosion resistance, it is widely used in sanitary and hygienic systems, food and dairy plants, beverage processing, pharmaceuticals, semiconductor manufacturing, marine and offshore applications, and medical laboratory equipment.

What specifications and testing procedures are applied to these tubes?

The tubes are manufactured in accordance with ASTM A269, A270, and A213 standards. They undergo 100% PMI testing, are certified with the EN10204.3.1B Mill Test Certificate, and are open to accepted third-party inspections.

What are the equivalent grades of ASTM A269 TP316L internationally?

Equivalent grades include 1.4404 in Germany (DIN, WNr), SUS316L in Japan (JIS), Z2CND17-12 in France (AFNOR), 316S11 in England (BS), X2CrNiMo17-12-2 under Euronorms (EN) and ISO, and 022Cr17Ni12Mo2 in China (GB).