ss 316 pipe schedule chart.pdf

When sourcing materials for marine, chemical, or high-pressure applications, the SS 316 Pipe Schedule Chart is your most critical tool. Selecting the right wall thickness ensures the safety of your piping system while optimizing project costs.
In this guide, we break down the dimensions, pressure ratings, and procurement tips for 316 Stainless Steel pipes.

 

What schedule is 316 stainless steel pipe?

316/316L stainless steel pipe is most commonly available in Schedule 40S and Schedule 10S (often abbreviated as Sch 40 or Sch 10). These schedules define the wall thickness, with 40S being standard weight and 10S being a lighter wall thickness frequently used for corrosion resistance without high-pressure requirements.

Pressure Resistance

Schedule	Typical Use
SCH 10	Low pressure, corrosion-focused systems
SCH 40	General industrial use
SCH 80	High-pressure pipelines

 

What is the difference between Sch 40 and Sch 40S for SS 316L pipe?

For SS 316L pipe, the primary difference is that Sch 40S refers specifically to stainless steel pipe (ASTM A312) designed for corrosion resistance with slightly different, often lighter wall thicknesses in larger sizes, while Sch 40 (often carbon steel, per ASME B36.10) indicates a standardized, thicker wall. The "S" signifies it is a specialized stainless schedule.

 

SS 316 Pipe Schedule Chart (NPS 1/2" to 12")

As a buyer, you need to know the Outer Diameter (OD) and Wall Thickness to calculate weight and flow capacity. Below is a reference chart for common sizes:

Nominal Pipe Size (NPS)	Outside Diameter (OD) - mm	Sch 10S Wall (mm)	Sch 40S Wall (mm)	Sch 80S Wall (mm)
1/2"	21.34	2.11	2.77	3.73
3/4"	26.67	2.11	2.87	3.91
1"	33.40	2.77	3.38	4.55
1.5"	48.26	2.77	3.68	5.08
2"	60.33	2.77	3.91	5.54
3"	88.90	3.05	5.49	7.62
4"	114.30	3.05	6.02	8.56
6"	168.28	3.40	7.11	10.97
8"	219.08	3.76	8.18	12.70
12"	323.85	4.57	9.53	12.70

Note: For complete sizes up to NPS 48", please consult our technical team.

Download SS 316 Pipe Schedule Chart PDF

SS 316L Stainless Steel Pipe Dimensions and Weight Chart

NPS (Inches)	OD (Inches)	OD (mm)	Schedule	Wall Thickness (mm)	Weight (lb/ft)	Weight ( kg/m )
1/2"	0.840	21.34	Sch 10S	2.11	0.67	1.02
			Sch 40S	2.77	0.85	1.27
			Sch 80S	3.73	1.09	1.62
3/4"	1.050	26.67	Sch 10S	2.11	0.86	1.30
			Sch 40S	2.87	1.13	1.69
			Sch 80S	3.91	1.48	2.20
1"	1.315	33.40	Sch 10S	2.77	1.41	2.10
			Sch 40S	3.38	1.68	2.50
			Sch 80S	4.55	2.17	3.24
1-1/2"	1.900	48.26	Sch 10S	2.77	2.09	3.11
			Sch 40S	3.68	2.72	4.05
			Sch 80S	5.08	3.63	5.41
2"	2.375	60.33	Sch 10S	2.77	2.64	3.93
			Sch 40S	3.91	3.66	5.44
			Sch 80S	5.54	5.03	7.48
3"	3.500	88.90	Sch 10S	3.05	4.34	6.46
			Sch 40S	5.49	7.58	11.30
			Sch 80S	7.62	10.25	15.30
4"	4.500	114.30	Sch 10S	3.05	5.62	8.37
			Sch 40S	6.02	10.80	16.10
			Sch 80S	8.56	15.00	22.30
6"	6.625	168.28	Sch 10S	3.40	9.31	13.90
			Sch 40S	7.11	18.99	28.30
			Sch 80S	10.97	28.62	42.60
8"	8.625	219.08	Sch 10S	3.76	13.51	20.10
			Sch 40S	8.18	28.60	42.60
			Sch 80S	12.70	43.46	64.70
10"	10.750	273.05	Sch 10S	4.19	18.72	27.90
			Sch 40S	9.27	40.57	60.40
			Sch 80S	12.70	55.13	82.10

 

How do I calculate the weight of SS 316L pipe using the schedule chart?

 To calculate the weight of SS 316L piping, consult a standard chart to determine the Outer Diameter (OD) and wall thickness corresponding to your required nominal size and pipe schedule. Subsequently, multiply the obtained weight per unit length (in metric units-kg/m) by the total length of the pipe; alternatively, you may calculate it directly using the following formula: Weight (kg/m) = (OD - Wall Thickness) × Wall Thickness × 0.0248.

 

What is the maximum pressure rating for a Schedule 10S SS 316L pipe?

The maximum pressure rating for a Schedule 10S SS 316L pipe varies based on diameter and temperature, ranging from roughly 2,000+ psi for small sizes (1/2") to under 500 psi for larger sizes (e.g., 6"+) at room temperature. A 1-inch 10S 316L pipe typically holds around 1,710 psi, while a 2-inch pipe holds roughly 890 psi.

Click to view the 316 Stainless Steel Pipe Pressure Rating Chart

 

How does the internal diameter (ID) change with different schedules?

As pipe schedules increase, the internal diameter (ID) decreases because the wall thickness increases while the outside diameter (OD) remains constant. A higher schedule number (e.g., Sch 80 vs. Sch 40) means a thicker pipe, reducing the ID and flow area, which allows it to handle higher pressure.

 

ASTM Standards for SS 316 Pipes

When issuing an RFQ (Request for Quote), always specify the ASTM standard to ensure quality:
ASTM A312: The standard for seamless, welded, and heavily cold-worked austenitic stainless steel pipes (most common).
ASTM A358: For electric-fusion-welded (EFW) pipes.
ASTM A269: For general service tubing (often measured by OD rather than NPS).

 

316 Stainless Steel Pipe  Payment Terms & Shipping Methods

Item	Details
Product	316 / 316L Stainless Steel Pipe (Seamless & Welded)
Payment Terms	• T/T (30% advance payment, 70% balance before shipment) • T/T 100% before shipment (for small orders) • L/C at sight (acceptable for large-volume orders) • Other payment terms negotiable based on order value
Price Terms	FOB, CFR, CIF (as per Incoterms® 2020)
Loading Port	Shanghai / Tianjin / Qingdao / Ningbo or other main Chinese ports
Packaging	• Plastic caps on both ends • Bundled with steel strips • Wooden cases or pallets for export packing • Custom packaging available on request
Delivery Time	• Stock items: 7–10 days • Customized production: 20–35 days
Shipping Documents	Commercial Invoice, Packing List, Bill of Lading, Mill Test Certificate (EN 10204 3.1), Certificate of Origin