The cost of sheet metal parts varies depending on the specific designs, and there is no set law that needs to be known about the type of processing method of sheet metal parts. In general Price of sheet metal products = materials costs + machining costs + (surface treatment cost) + miscellaneous taxes + profit. If the sheet needs mold, mold fee should be added.
- 1. Molds and surface treatment of different materials according to the use of the mold: processing equipment size, processing quantity, precision requirements, etc.;
- 2. Material (depending on the price of the brand, pay attention to whether it is special steel and whether it needs to be imported);
- 3. Shipping (transport costs for large sheets);
- 4. Taxes;
- 5. 15 – 20% of the cost of profit from the sale of tubes.
When processing common sheet metal parts, the total price is generally as follows: material cost + processing cost + standard fixed parts + surface decoration + profit + administration fee + tax fee.
For small quantities, mold processing is not used. We generally calculate it as follows: Net weight of the material * (1.2 – 1.3) = Gross weight. Based on this gross weight * unit price of the material, we calculate the material costs. Processing costs = (1 – 1.5) * Material costs. The cost of decorating a class of coating is determined by the overall net weight of the pieces, how much a kilogram of the pieces costs, and how much the coating costs per square meter. For example, for nickel-plated parts, the cost is 8-10 USD/kg (I'm in Nanjing, Jiangsu Province), material cost + processing cost + standard solid parts + surface decoration = cost. Profit can usually be chosen from costs* (15% – 20%). Tax Rate = (Cost + Profit, Overhead) * 0.17. This estimate contains a note: the cost of materials must be declared before taxes.
Mass production requires the use of molds, which are generally divided into molds and offered parts. With molds, the processing cost of parts can be relatively low, and the total profit that can be achieved by quantity covers the raw material costs of our factory. Generally, liquid material is charged in addition to the material usage fee. Because there is material in the corners in the sheet metal manufacturing process, it cannot be used. Some of them can be used now, others can only be sold as scrap.
Costs for Sheet Metal Parts
The cost components of sheet metal parts are generally divided into the following parts: 1. Material costs; 2. Cost of standard parts; 3. Processing costs; 4. Packaging costs; 5. Transport costs; 6. Administrative costs; 7. Profit.
1. Material costs
Material costs are the net material costs according to the drawings = material volume * material density * material unit price.
2. The cost of standard parts
Refers to the cost of standard parts required in the drawings.
3. The cost processing process
It refers to the processing costs required for each process required to be transformed into products. For details on the composition of each process, see “Cost Format” and “Cost Composition Table for Each Process”. The most important components of process cost are listed for explanation.
(1). CNC Drilling
Its cost composition = depreciation and amortization of equipment + labor costs + depreciation and amortization of auxiliary materials and equipment:
Equipment depreciation is calculated over 5 years, 12 months per year, 22 days per month and 8 hours per day.
Example: Equipment worth US$2 million, hourly equipment depreciation = 200 * 10,000/5/12/22/8 = 189.4 yuan/hour.
Labor costs: Three technicians are required to operate each CNC. The average monthly salary of each technician is 12,000 yuan and they work 22 days a month, 8 hours a day. That is, the cost per hour is 12,000 * 03/22/8 = 204 yuan/hour.
Additional costs: The equipment required to process lubricants, volatile liquids and other production auxiliary materials requires about 5,000 yuan per month, 22 days per month, 8 hours per day, the hourly cost = 5,000/22/8 = 28.4 yuan/hour.
(two). To bend
Its cost components = depreciation and amortization of equipment + labor costs + depreciation and amortization of auxiliary materials and equipment:
Equipment depreciation is calculated over a 5-year period by dividing each year into 12 months, 22 days per month and 8 hours per day to remember.
Example: If the equipment is valued at 500,000 yuan, the depreciation per minute will be 50 x 10,000/5/12/22/8/60 = 0.79 yuan/minute. It generally takes 10 to 100 seconds to fold one fold, so the equipment depreciation when folding each knife is 0.13 to 1.3 yuan/knife.
Labor costs: A technician is required to operate each device. The average monthly salary of each technician is 10,000 yuan. The workload is 22 days per month and 8 hours per day. Therefore, the cost per minute is 10,000/22/8/60 = 0.95 yuan/minute. An average of 1 to 2 turns can be made per minute. Therefore, the labor cost per curve is 0.48 to 0.95 yuan/knife.
Auxiliary material costs: The cost of a press brake is 6,000 yuan per auxiliary material per month. With 22 days per month and 8 hours per day, the cost per hour is 6,000/22/8/60 = 0.57 yuan/meter.
(3). Surface treatment
Painting costs incurred after the purchase price (e.g. electroplating, oxidation) are:
Spraying cost = Powder material cost + Labor cost + Accessories + Equipment depreciation
Powder material cost: The calculation method is generally calculated per square meter. The price per kilogram of powder is between 25 and 60 yuan (mainly depending on customer needs). Generally, 4 to 5 square meters can be sprayed per kilogram of powder. Powder material cost = 6 to 15 yuan/square.
Labor cost: Total 15 people per spray line, each person earns 12,000 yuan/month, 22 days a month, 8 hours a day, each hour can spray 30 square meters. Labor cost = 15 * 12,000/22/8/30 = 34 yuan/square.
Auxiliary materials cost: Mainly refers to the fuel cost of the pre-treatment fluid furnace used in the curing furnace, 50,000 yuan per month, per month, corresponding to 22 days, 8 hours per day, 30 square meters are sprayed every hour.
Cost of auxiliary materials = 9.47 yuan/square.
Equipment depreciation: Investment in a spraying system of 1 million, according to 5 years of depreciation, every December, 22 days a month, 8 hours a day, spraying 30 square meters per hour. Equipment depreciation cost = 100 * 10,000/5/12/22/8/30 = 3.16 yuan/square meter, total spraying cost = 22-32 yuan/square meter. If you want to use local protective spraying, the cost will be higher.
4. Packaging costs
Depending on the product, there are different packaging requirements, and prices also vary, generally around 20-30 yuan/cubic meter.
5. Transport administration fee
Transport costs are added to the product.
6. Administrative costs
Indirect costs consist of two parts: factory rent, water and electricity and financial costs factory rent, water and electricity:
The monthly operating cost of factory rental is 150,000, the monthly production value is 4 million; The operating costs of renting the factory must constitute the proportion of the production value = 15/400 = 3.75% Financing costs:
Due to the mismatch between accounts receivable and payment cycles (we buy materials in cash and the customer has 15 days a month to pay) we have to hold out for at least around 3 months, according to the bank interest rate of 1.25- 1.5%.
Therefore: Indirect costs should be around 5% of the total sales price.
7. Profit
Given the company's long-term development and best service to our customers, our profit margin is 3-5%.
To estimate costs more accurately, many sheet metal processing companies use special estimating software that can be used to quickly determine the costs of materials, labor, machinery, etc., and create a relatively accurate quote.
