ASTM A312 TP316L SCH10S Stainless Steel EFW Pipe

GNEE Stainless Steel is one of China's leading manufacturers and suppliers of ASTM A312 TP316L EFW steel pipes, dedicated to providing high-quality and highly reliable austenitic stainless steel piping products for global customers. We support various non-standard customized orders, ensuring flexible solutions that meet the requirements of different engineering projects.

 

ASTM A312 TP316L EFW steel pipes are widely used in industrial environments with extremely high corrosion resistance requirements. The TP316L stainless steel welded pipe we supply is manufactured using the Electric Fusion Welding (EFW) process, which forms pipes by precision welding of rolled steel plates or steel strips. Compared with 316L seamless pipes, EFW pipes offer a more cost-effective solution, especially for large-diameter pipeline applications, significantly reducing overall procurement costs while maintaining stable performance.

 

The core advantage of TP316L steel pipe lies in its excellent corrosion resistance, which effectively withstands acids, alkalis, salts, and chloride environments. Its pitting corrosion resistance is significantly better than that of 304L stainless steel. In terms of weldability, the low-carbon structure prevents carbide precipitation during welding, thereby avoiding intergranular corrosion and ensuring long-term stability of welded joints. In addition, ASTM A312 TP316L welded pipes maintain good toughness and mechanical properties even in ultra-low temperature environments (down to -270°C), making them suitable for cryogenic engineering and other special operating conditions.

ASTM A312 TP316L steel pipes also feature excellent cold working performance, allowing bending, stamping, and complex forming processes. They are supplied in a solution-annealed condition, ensuring optimized mechanical strength and superior corrosion resistance for demanding industrial applications.

 

ASTM A312 TP316L specification

Standard	ASTM A312 ASME SA312 / ASTM A 358 ASME SA 358
Size	1/8″ NB TO 100″ NB
Schedule	SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Type	Seamless / ERW / Welded / Fabricated / LSAW Pipes
Form	Round, Square, Rectangular, Hydraulic Etc
Specialized in	Large Diameter Size
Length	Single Random, Double Random & Cut Length.
End	Plain End, Beveled End, Treaded
We Provide	ISO9001 Mill Test Certificate (MTC) EN 10204 – 3.1 Third-party inspection availability (SGS/TÜV)

 

Stainless steel 316L Pipe Chemical Composition

Grade	UNS	C≤	Mn	P≤	S≤	Si≤	Cr	Mo	Ni
TP316L	S31603	0.035	2	0.045	0.03	1	16.0-18.0	2.00-3.00	11.0-14.0

 

Stainless steel 316L Pipe Mechanical Properties

Mechanical properties	Tensile, min, ksi[MPa]	Yield, min, ksi[MPa]	Elongation, %(min)	Hardness, HB(max)
TP316L	70【485】	25【170】	35	192

 

ASTM A312 TP316L Pipe Dimensions​

Nominal Pipe Size		OD(mm) outside diameter	Sch5S (mm)	Sch10S (mm)	Sch40S (mm)	Sch80S (mm)	Sch160S (mm)
DN	NPS
6	1/8	10.3		1.24	1.73	2.41	3.15
8	1/4	13.7		1.65	2.24	3.02	3.68
10	3/8	17.1		1.65	2.31	3.2	4.01
15	1/2	21.3	1.65	2.11	2.77	3.73	4.78
20	3/4	26.7	1.65	2.11	2.87	3.91	5.56
25	1	33.4	1.65	2.77	3.38	4.55	6.35
32	1 1/4	42.2	1.65	2.77	3.56	4.85	6.35
40	1 1/2	48.3	1.65	2.77	3.68	5.08	7.14
50	2	60.3	1.65	2.77	3.91	5.54	8.74
65	2 1/2	73	2.11	3.05	5.16	7.01	9.52
80	3	88.9	2.11	3.05	5.49	7.62	11.13
90	3 1/2	101.6	2.11	3.05	5.74	8.08
100	4	114.3	2.11	3.05	6.02	8.56	13.49
125	5	141.3	2.77	3.40	6.55	9.53	15.88
150	6	168.3	2.77	3.40	7.11	10.97	18.26
200	8	219.1	2.77	3.76	8.18	12.7
250	10	273.1	3.40	4.19	9.27	12.7
300	12	323.9	3.96	4.57	9.53	12.7
350	14	355.6	3.96	4.78	9.53	12.7
400	16	406.4	4.19	4.78	9.53	12.7

If you have any project requirements for 316L stainless steel pipes, please feel free to place an order. GNEE has a large inventory of popular products for you to choose from; please contact our factory today. We offer competitive prices and excellent service.

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What is the difference between TP316 and TP316L?

The main difference between TP316 and TP316L (ASTM A312) lies in their carbon content; "L" indicates "low carbon" (0.03%), while standard TP316 has a carbon content of less than 0.08%. TP316L provides superior corrosion resistance in welded components by reducing carbide precipitation, while TP316 offers slightly higher mechanical strength.

 

What is the difference between ASTM A312 TP316L ERW and EFW pipe?

The main difference between ASTM A312 TP316L resistance welded (ERW) and electrofusion welded (EFW) pipes lies in the welding process. Resistance welding uses pressure and resistance to weld, making it suitable for medium-pressure applications, and it produces cleaner and less expensive welds. Electrofusion welding, on the other hand, uses filler material to create a stronger weld and is typically used for thick-walled, large-diameter, high-pressure pipes.

 

ASTM A312 TP316L EFW Pipe HS Code Reference 

Most A312 welded pipes fall under Heading 7306. If the pipe diameter is exceptionally large (over 406.4 mm / 16 inches), it falls under Heading 7305.

Pipe Type	HS Code	Description (Standard International)
Welded Pipe (OD ≤406.4mm)	7306.40.00	Other tubes, pipes and hollow profiles, welded, of circular cross-section, of stainless steel.
Welded Pipe (OD > 406.4mm)	7305.11.00	Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross-sections, the external diameter of which exceeds 406.4 mm, of iron or steel: Longitudinally submerged arc welded.

 

Our ASTM A312 316L EFW pipes can be 100% X-ray inspected upon request to ensure a weld coefficient of 1.0, meeting the highest safety standards in the chemical industry. As SCH 10S is a thin-walled pipe, we use reinforced hexagonal straps and end protectors to prevent out-of-roundness deformation during long-distance sea transport. Each shipment comes with a material certificate conforming to EN 10204 3.1, detailing chemical and thermal composition analysis and flattening test results.