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BEIHAI YUEDA FRP PRODUCTS
After removing the oxide layer from the fiberglass sand pipe, clean it with a clean cloth or pure cotton gauze.
Release time:
2022/12/02
If the matchsticks are a bit tight, they can be tapped with a wooden mallet, and part of the pipe marking should fit perfectly into the pipe fitting's port number. After assembling the fiberglass sand pipe fittings, the coaxiality and flatness of the pipes should be adjusted. When selecting backfill material, care should be taken to avoid the displacement of the backfill material. The backfill material should be compatible with the original soil to ensure that it is not washed away or mixed with the original soil, and to prevent the original soil from mixing into the backfill material. If such a situation occurs, the pipe will lose some support, making it prone to deformation, which will affect the normal operation of the pipe.
After removing the oxide layer from the glass fiber reinforced sand pipe, clean the inner and outer surfaces of the pipe and fittings in the scraped area with a clean cloth or pure cotton yarn. The surface must not have stains, oil, grinding debris, or other dirt. When the towel becomes dirty during use, it must be cleaned immediately.
Before connecting the pipes and fittings, ensure that the connecting surfaces of the pipes and components are dry and free of water marks. If not dry, bubbles can easily form in the weld joint, severely affecting the quality of the weld. Align the direction of the pipe to be assembled and then insert the arc welding joint.
Gently tap the end of the weld seam with a wooden mallet until the mark is reached. Do not strike the power terminal during the assembly phase.
After using one end of the fitting (such as a direct component), insert another clean and detached pipe into the fitting. If the matchstick is a bit tight, it can be tapped with a wooden mallet, and the marked part of the pipe should just enter the fitting's opening.
During the insertion phase, if the pipe accidentally goes beyond the marked line, the fitting should be tapped back to the marked line.
When the pipe size is DN50-dn200mm, it is generally tapped in with a wooden mallet or hammer. For large diameter pipes DN250~DN500mm, a stabilizer and hand hoist (tensioner) should be used to assist in connecting the joint.
After assembling the glass fiber reinforced sand pipe, the coaxiality and flatness of the pipe should be adjusted.
Conduct a visual inspection from a distance away from the fitting area (at least two distances away from the fitting). If the flatness of the fitting joint exceeds the limit, adjustments must be made.
The glass fiber reinforced sand pipe is generally laid underground during use, typically buried with sandy soil, gravel, and sand, and compacted. In this case, the glass fiber reinforced sand pipe can be buried deeper, making its use unaffected by surface conditions.
If there is no gravel and sand to backfill with original soil, the following conditions must be met: there are no small hard stones exceeding twice the size of gravel, no frozen soil layers, no organic materials, and no waste such as tires, glass shards, or alloys. The required compacted original soil must be granular.
When selecting backfill material, care should be taken to avoid the displacement of the backfill material. The backfill material should match the original soil to ensure it is not washed away or mixed with the original soil, and to prevent original soil from mixing into the backfill material. If this occurs, the pipe loses some support, making it prone to deformation, which affects the normal operation of the pipe. If some areas use incompatible backfill materials, manual textiles can be used to separate them from other materials. Common geotextile screening cloth should surround the pipe bed and backfill material in the pipe area to prevent water from entering the pipe area and washing away or moving the backfill material, ensuring the expected service life of the glass fiber reinforced sand pipe.
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