How is the cost of sandblasting inside and outside the pipeline determined?

The degree of rusting has little impact on the cost of sandblasting for rust removal. Of course, in cases where phosphoric fertilizer is produced on-site, the rust may need to be removed with a chisel, which makes the process more expensive due to the need to continuously sieve the sand. I’m not sure what the required standard is after rust removal; if the cleanliness level needs to reach SA3 and the roughness level should be grade 3, the cost would be around forty yuan. This price includes labor, materials, machine wear and tear, and electricity costs. The cost of working inside pipes increases slightly depending on the pipe diameter; I’m not sure what type of pipe the owner has or what its diameter is.

LZ had better be more specific. What was said on the second floor is great! You might as well take a look at those from various provinces. /M2。

There is a fixed amount, independent of the severity of corrosion

Let’s take a look at the fixed amount first; I remember that the price for rust removal is related to the degree of corrosion. I hope someone with more experience can give me some advice.

1: Rust removal by manual methods or using a grinder is classified into four levels: slight rust, moderate rust, severe rust, and extreme rust. The criteria for classification are as follows: 1. Slight rust: A steel surface that is completely covered with oxide scale with almost no rust present； 2. Light rust: The surface of the steel where rust has formed and some of the oxide scale has peeled off ； 3. Moderate rusting: The oxide scale has peeled off or can be scraped off due to rusting, with minor pitting on the surface of the steel ； 4. Severe rusting: The oxide scale has completely peeled off due to rusting, and pitting has occurred extensively on the surface of the steel ； II: Sandblasting and shot blasting for rust removal are to be carried out in accordance with the Sa2.5 standard; if the standard is changed to Sa3, the cost is calculated by multiplying the base rate by a factor of 1.10 ； For Sa1 or Sa2 grades, the fixed base price is multiplied by a coefficient of 0.90. Three: As you said, sandblasting for rust removal has nothing to do with the degree of rust; I’m not sure whether you used quartz sand or river sand for sandblasting. Also, the object you are sandblasting is either equipment or a pipeline. Taking pipes as an example: 1. Spraying quartz sand – inner wall: 218.09 yuan, outer wall: 159.91 yuan – this does not include the cost of the quartz sand itself. 2. Gunite sand: 308.4 yuan for the inner wall, 232.44 yuan for the outer wall – excluding the cost of quartz sand as the main material. Additionally, it should be noted that the prices listed above are based on Sinopec’s 07 quota standards.

Garnet abrasives are used for sandblasting carbon steel and stainless steel components in the pipeline, drilling platform, and shipbuilding industries, in order to completely remove rust, soluble salts, and other contaminants. The surfaces treated by sandblasting have no embedded particles, nor any undesirable protrusions or pits, allowing for the achievement of an SA3 white metal finish. The surface roughness can range from 50–75 microns to 60–95 microns. CN garnets are made from high-quality rock minerals such as iron-aluminum garnets, and are processed according to the highest quality standards; they exhibit excellent properties in terms of purity, particle size, density, hardness, and service life. It features low loss rates and high production efficiency, making it an economical and effective alternative to quartz sand, copper slag, coal cinder, brown corundum, steel grit and shot, glass beads, and other similar materials. Due to its excellent toughness and low brittleness, it can be reused up to 6-10 times, depending on the specific application. It contains no free silicon, heavy metals, or toxic substances, meeting occupational health and safety requirements. The chloride content is 10-15 ppm, meeting the strictest industrial and military technical requirements. After 6 washes, the dust content is extremely low, and minimal dust is generated during sandblasting, which **improves the working environment**. Application scope: As a natural non-metallic abrasive, CN garnet sanding abrasive is primarily used for sanding and surface treatment of materials such as carbon steel, aluminum, stainless steel, glass, stone, wood, rubber, and titanium alloys.