On July 14, 2025, we received a customer’s inquiry for ASTM A312 TP316 stainless steel pipe. Upon receiving the inquiry, we first conducted a thorough review and confirmed the following key information: product standard (ASTM A312 TP316), specific specifications (including outer diameter, wall thickness, and length), quantity, and expected delivery time. To ensure the accuracy of the quote, our sales representative immediately contacted the customer to confirm some details that may affect the final cost.
We also have other completed ASTM A312 TP316 stainless steel pipe order cases 👉 Click to learn more.
Dimensional Inspection of Stainless Steel Pipes
Dimensional inspection is the most fundamental quality control step before steel pipes leave the factory, ensuring they meet customer orders and relevant standards. We ensure that the dimensions of each steel pipe are within standard tolerances.
This prevents pipes with non-compliant dimensions from being welded or joined, leading to construction delays and additional costs.
Outside Diameter (OD): Measured using a vernier caliper, micrometer, or gage. For large-diameter steel pipes, a gage is typically used with a formula to calculate the OD, or a laser measuring instrument is used to ensure accuracy.
Wall Thickness (WT): Measured using an ultrasonic thickness gauge or micrometer. Ultrasonic thickness gauges allow for quick and accurate measurements without damaging the pipe, while micrometers are used for precise inspection of pipe ends.
Length: Measured using a tape measure or laser distance meter. For single pipes, the length must be within the tolerances specified by the standard.
Ends: Check the bevel angle and flatness of the end faces. A bevel angle gauge and square are typically used to ensure that the ends meet welding requirements.
ASTM A312 TP316 Stainless Steel Pipe Specification
| Processing Method | Seamless and Welded |
| Size Range | 1/8” – 30” / DN6 – 750 |
| Thickness Schedule | SCH 10S- SCH 160, XXS |
| Length | 6m or 12 m or Random |
| Standard | ASME B36.19 |
| Surface Treatment | Polish , Mirror , Epoxy Powder FBE, 2PE, 3PE Coating |
| Material Grade | ASTM A312 TP304/304L/304H, 316/316L, 310S, 317, 347, 904L, S32205, S31803, 32750, 32760, S32550 |
ASTM A312 TP316 Seamless Pipe Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | Mo |
| ASTM A312 TP316 | MIN | 11.00 | 16.00 | 2.00 | |||||
| MAX | 0.080 | 2.00 | 0.045 | 0.030 | 1.00 | 14.00 | 18.00 | 3.00 | |
| ASTM A312 TP316L | MIN | 10.00 | 16.00 | 2.00 | |||||
| MAX | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 14.00 | 18.00 | 3.00 |
ASTM A312 TP316 Seamless Pipe Mechanical Property
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
| ASTM A312 TP316 | 515min | 205min | 35 min |
| ASTM A312 TP316L | 485 min | 170 min | 35 min |
Features
Corrosion Resistance
TP316 stainless steel pipe offers excellent corrosion resistance in seawater, saltwater, and chemical media, and is particularly suitable for chloride environments.
High-Temperature Resistance
It exhibits excellent oxidation resistance up to 870°C and maintains strength and toughness at elevated temperatures.
Mechanical Properties
It possesses excellent ductility and strength, making it suitable for welding, bending, and various other fabrication processes.
Hygiene and Safety
It releases no harmful substances and is widely used in the pharmaceutical and food processing industries.
Stainless Steel Pipe Dimension
| Stainless Steel Pipe (ASME B 36.19M) | ||||||||||
| Nominal Size | OD | Sch5s | Sch10s | Sch40s | Sch80s | |||||
| DN | NPS | 0 | T | kg/m | T | kg/m | T | kg/m | T | kg/m |
| 6 | 1/8 | 10.3 | 1.24 | 0.28 | 1.73 | 0.37 | 2.41 | 0.47 | ||
| 8 | 1/4 | 13.7 | 1.65 | 0.49 | 2.24 | 0.63 | 3.02 | 0.8 | ||
| 10 | 3/8 | 17.1 | 1.65 | 0.63 | 2.31 | 0.84 | 3.2 | 1.1 | ||
| 15 | 1/2 | 21.3 | 1.65 | 0.82 | 2.11 | 1 | 2.77 | 1.27 | 3.73 | 1.62 |
| 20 | 3/4 | 26.7 | 1.65 | 1.04 | 2.11 | 1.28 | 2.87 | 1.69 | 3.91 | 2.2 |
| 25 | 1 | 33.4 | 1.65 | 1.33 | 2.77 | 2.09 | 3.38 | 2.5 | 4.55 | 3.24 |
| 32 | 1 1/4 | 42.2 | 1.65 | 1.68 | 2.77 | 2.7 | 3.56 | 3.39 | 4.85 | 4.47 |
| 40 | 1 1/2 | 48.3 | 1.65 | 1.95 | 2.77 | 3.11 | 3.68 | 4.05 | 5.08 | 5.41 |
| 50 | 2 | 60.3 | 1.65 | 2.44 | 2.77 | 3.93 | 3.91 | 5.44 | 5.54 | 7.48 |
| 65 | 2 1/2 | 73.0 | 2.11 | 3.77 | 3.05 | 5.26 | 5.16 | 8.63 | 7.01 | 11.41 |
| 80 | 3 | 88.9 | 2.11 | 4.6 | 3.05 | 6.45 | 5.49 | 11.29 | 7.62 | 15.27 |
| 90 | 31/2 | 101.6 | 2.11 | 5.29 | 3.05 | 7.4 | 5.74 | 13.57 | 8.08 | 18.63 |
| 100 | 4 | 114.3 | 2.11 | 5.96 | 3.05 | 8.36 | 6.02 | 16.07 | 8.56 | 22.32 |
| 125 | 5 | 141.3 | 2.77 | 9.67 | 3.4 | 11.57 | 6.55 | 21.77 | 9.53 | 30.97 |
| 150 | 6 | 168.3 | 2.77 | 11.55 | 3.4 | 13.48 | 7.11 | 28.26 | 10.97 | 42.56 |
| 200 | 8 | 219.1 | 2.77 | 15.09 | 3.76 | 19.96 | 8.18 | 42.55 | 12.7 | 64.64 |
| 250 | 10 | 273.1 | 3.4 | 23.08 | 4.19 | 27.78 | 9.27 | 60.31 | 12.7 | 96.01 |
| 300 | 12 | 323.9 | 3.96 | 31.89 | 4.57 | 36 | 9.53 | 73.88 | 12.7 | 132.08 |
| 350 | 14 | 355.6 | 3.96 | 35.06 | 4.78 | 41.3 | ||||
| 400 | 16 | 406.4 | 4.19 | 42.41 | 4.78 | 47.29 | ||||
| 450 | 18 | 457.2 | 4.19 | 47.77 | 4.78 | 53.26 | ||||
| 500 | 20 | 508 | 4.78 | 60.46 | 5.54 | 68.61 | ||||
| 550 | 22 | 558.8 | 4.78 | 66.57 | 5.54 | 75.53 | ||||
| 600 | 24 | 609.6 | 5.54 | 84.16 | 6.35 | 94.45 | ||||
| 750 | 30 | 762 | 6.35 | 120.72 | 7.92 | 147.36 | ||||
Manufacturing Process
ASTM A312 covers two primary manufacturing processes:
Seamless steel : Made from billets through piercing and cold drawing/cold rolling, the pipe body has no welds and is suitable for applications requiring high pressure, high temperature, or high strength.
Welded : Made from coiled steel plate or strip and then welded, it is relatively low-cost and suitable for applications with less stringent pressure requirements.
Applications
Chemical Industry: Heat exchangers, chemical storage tanks, and piping systems
Oil and Gas: Pipelines transporting chloride-containing or corrosive media
Marine Engineering: Desalination plants, offshore platforms
Food and Pharmaceuticals: Pharmaceutical equipment, food processing piping
Energy: High-temperature boiler tubes, heat exchangers