The weight of stainless steel pipes is a very important parameter in the import and export business. In import and export business, freight is usually calculated based on the weight or volume of the goods, and accurately calculating the weight facilitates the determination of transportation costs. Therefore, accurately estimating the weight helps to accurately calculatetransportation costs.
The weight of goods can also affect packaging and transportation methods. According to the weight and size of the goods, customers can decide to choose the shipping way depending on the weights, like LCL, 20GP, 40GP, Air or Express.
The weight of stainless steel pipes with different specifications and materials may vary. Therefore, in import and export business, the weight should be accurately estimated based on the actual situation. Next, we will discuss the method of calculating the weight.
Types of Stainless Steel Pipe
Stainless steel pipe is a type of hollow, elongated steel with a cross-section as the prototype, made of stainless steel, which has excellent corrosion resistance and good mechanical properties.
According to material, stainless steel pipes mainly include martensitic stainless steel, austenitic stainless steel, and duplex stainless steel. Martensitic stainless steel is mainly made of high carbon steel or low carbon steel with a chromium content between 12% and 18%. It has high strength, good wear resistance, and corrosion resistance, and is commonly used in the production of parts, bolts, etc. in engineering. Austenitic stainless steel contains 17% -25% chromium and 8% -29% nickel, and its corrosion resistance is higher than that of martensite. It is mainly used in situations where strong corrosion resistance is required. Duplex stainless steel combines the advantages of ferritic stainless steel and austenitic stainless steel.
What are the Methods for Stainless Steel Pipe Weight?
1.Weigh the pipe one by one.
2.Calculate the weight by formula.
3.Stainless Steel Pipes Wall Thickness & Weight Chart.
| Stainless Steel Pipe (ASME B 36.19M) | ||||||||||
| Nominal Size | OD | Sch5s | Sch10s | Sch40s | Sch80s | |||||
| DN | NPS | 00 | T | kg/m | T | kg/m | T | kg/m | T | kg/m |
| 6 8 10 | 1/8 1/4 3/8 | 10.3 13.7 17.1 | 1.24 1.65 1.65 | 0.28 0.49 0.63 | 1.73 2.24 2.31 | 0.37 0.63 0.84 | 2.41 3.02 3.20 | 0.47 0.80 1.10 | ||
| 15 20 25 | 1/2 3/4 1 | 21.3 26.7 33.4 | 1.65 1.65 1.65 | 0.82 1.04 1.33 | 2.11 2.11 2.77 | 1.00 1.28 2.09 | 2.77 2.87 3.38 | 1.27 1.69 2.50 | 3.73 3.91 4.55 | 1.62 2.20 3.24 |
| 32 40 50 | 11/4 11/2 2 | 42.2 48.3 60.3 | 1.65 1.65 1.65 | 1.68 1.95 2.44 | 2.77 2.77 2.77 | 2.70 3.11 3.93 | 3.56 3.68 3.91 | 3.39 4.05 5.44 | 4.85 5.08 5.54 | 4.47 5.41 7.48 |
| 65 80 90 | 21/2 3 31/2 | 73.0 88.9 101.6 | 2.11 2.11 2.11 | 3.77 4.60 5.29 | 3.05 3.05 3.05 | 5.26 6.45 7.40 | 5.16 5.49 5.74 | 8.63 11.29 13.57 | 7.01 7.62 8.08 | 11.41 15.27 18.63 |
| 100 125 150 | 4 5 6 | 114.3 141.3 168.3 | 2.11 2.77 2.77 | 5.96 9.67 11.55 | 3.05 3.40 3.40 | 8.36 11.57 13.48 | 6.02 6.55 7.11 | 16.07 21.77 28.26 | 8.56 9.53 10.97 | 22.32 30.97 42.56 |
| 200 250 300 | 8 10 12 | 219.1 273.1 323.9 | 2.77 3.40 3.96 | 15.09 23.08 31.89 | 3.76 4.19 4.57 | 19.96 27.78 36.00 | 8.18 9.27 9.53 | 42.55 60.31 73.88 | 12.70 12.70 12.70 | 64.64 96.01 132.08 |
| 350 400 450 | 14 16 18 | 355.6 406.4 457.2 | 3.96 4.19 4.19 | 35.06 42.41 47.77 | 4.78 4.78 4.78 | 41.30 47.29 53.26 | ||||
| 500 550 | 20 22 | 508 558.8 | 4.78 4.78 | 60.46 66.57 | 5.54 5.54 | 68.61 75.53 | ||||
| 600 750 | 24 30 | 609.6 762 | 5.54 6.35 | 84.16 120.72 | 6.35 7.92 | 94.45 147.36 | ||||
Formula for Calculating Stainless Steel Pipes Weight
The weight of stainless steel pipes mainly depends on their outer diameter, wall thickness, length, and the density of stainless steel. Although the density of stainless steel varies depending on the material, it is usually between 7.70-8.00 grams per cubic centimeter.
The following is the basic formula for calculating the weight of stainless steel pipes:
Weight=(OD – T) x T x 0.02491 x L
OD=Outer Diameter(mm)
T=Wall Thickness(mm)
L=Length(m)
In this formula, the unit of outer diameter and wall thickness is usually millimeters, while the unit of length is usually meters . 0.02491 is a constant used to convert the calculation result into weight per meter (kg/m).
When calculating weight, ensure that all dimensions are converted to the same unit and the correct stainless steel density is selected. In this way, the weight can be calculated using the above formula.
For example, the weight of SS304 stainless steel pipe with an outer diameter of 8 inches, wall thickness of SCH40, and a length of 6 meters can be calculated using this formula.
Firstly, convert inches to millimeter sizes, 8 inches=219.1mm; SCH40=8.18mm. Then, using the formula, it can be calculated that:
Weight=(219.1mm-8.18mm) x 8.18mm x 0.02491 x 6m=257.88KG.