FRPP pipe definition:
FRPP pipe fittings are widely used in building water supply and drainage, urban water supply and drainage, gas pipes and other fields due to their small loss of water flow, energy saving, material saving, ecological protection, and easy completion. They have become the main force of the new century urban construction pipe network.
Graphic FRPP tube
Glass fiber reinforced polypropylene (FRPP pipe) is produced according to HG20539-92 standard, specification De20-De800mm, nominal pressure 0.4-1.0MPa, and is produced by glass fiber modified polypropylene raw material treated with coupling agent. The product has the characteristics of corrosion resistance, high strength, anti-leakage, small internal resistance, tensile strength, bending resistance, low cost, long service life and convenient installation and maintenance. It is widely used in petroleum, chemical, electric power, textile, metallurgy, pharmaceutical and papermaking. , food, mining, garbage disposal, construction and other industries, used as corrosive liquid transport and process pipeline, trusted by users. (PP) Engineering grade polypropylene tubing is extruded from engineered grade polypropylene pellets. The pipe is non-toxic and tasteless, and is widely used in chemical, environmental protection, food hygiene, building water supply and drainage, etc. (Executing QB1929-93 standard) glass fiber reinforced polypropylene FRPP pipe specifications and performance are as follows:
FRPP tube advantages:
Long service life: FRPP pipes can be safely used for more than 50 years under rated temperature and pressure conditions.
Excellent corrosion resistance: FRPP pipe is resistant to most chemicals and can withstand high concentrations of acids and bases with a pH range of 1-14 over a wide range.
Excellent anti-wear performance: When transporting ore mud, the wear resistance of FRPP pipe is more than 4 times that of steel pipe.
·High rigidity: FRPP pipe is not easy to be deformed due to the addition of glass fiber reinforced material
· Heat-resistant insulation and energy saving: FRPP pipe has a maximum operating temperature of about 95 °C. The thermal conductivity of this product is only 1/200 of that of steel pipe, so it has better insulation performance.
Reliable connection performance: The strength of the FRPP tube hot melt interface is higher than that of the pipe body, and the joint will not be broken due to soil movement or load.
·Good construction performance: FRPP pipe material is light, the welding process is simple, the construction is convenient, and the comprehensive construction cost is low.
FRPP pipe performance indicators:
FRPP pipe size:
FRPP pipe fittings type:
1) a rigid polyvinyl chloride (UPVC) pipe;
2) chlorinated polyvinyl chloride (CPVC) pipe;
3) polyethylene (PE) tube;
4) cross-linked polyethylene (PE-X) tube;
5) a three-type polypropylene (PP-R) tube;
6) a polybutene (PB) tube;
7) engineering plastic (ABS) pipe;
8) FRP sand (RPM) pipe;
9) aluminum plastic composite (PAP) tube;
10) Steel-plastic composite (SP) pipe, etc., FRPP pipe fittings production.
Use is cross-industry and cross-sectoral systems engineering. The raw materials are petrochemicals. Provide the required materials and manufacture them in separate construction and building materials industries (as new building materials) for use in construction (residential) and agricultural and urban infrastructure.
With the continuous expansion of the application field of FRPP pipe fittings, the variety of FRPP pipe fittings is also increasing. In addition to the early development of supply and discharge PVC pipes, chemical pipes, farmland irrigation pipes, and polyethylene pipes for gas, it has increased in recent years. PVC core foamed pipe, PVC, PE, double-wall corrugated pipe, aluminum-plastic composite pipe, cross-linked PE pipe, plastic-steel composite pipe, polyethylene silicon core pipe and so on.
FRPP pipe fittings product features:
1) Long-term service life, FRPP pipe can be safely used for more than 50 years.
2) Excellent corrosion resistance.
3) Excellent wear resistance.
4) Higher stiffness.
5) Heat-resistant insulation and energy saving.
6) Reliable connection performance.
7) Good construction performance-----FRPP pipe material is light, the welding process is simple, the construction is convenient, and the comprehensive construction cost is low.
Mainly applicable occasions: Drainage works in larger areas of buildings.
Construction and installation points:
1) Pipes should be laid on the original foundation or backfilled with compacted foundation after grooving.
2) The net width of the groove bottom can be determined according to the pipe diameter, soil condition and construction depth.
3) When excavating the trench, the elevation of the substrate should be strictly controlled and the base surface must not be disturbed.
FRPP pipe hot melt connection, note:
1. Ensure that the FRPP pipe and FRPP pipe are clean and flush.
2, the temperature of the heating plate is controlled at 195 ° C - 210 ° C
3. The hot-melt FRPP pipe and FRPP pipe are completed, and the small-diameter reinforced polypropylene pipe is welded with welding electrode at the interface to ensure that the welding rod covers the weld.
4. When connecting FRPP pipe and FRPP pipe, ensure that the two pipes are in a straight line and cannot be twisted.
5. When welding the flange, the flange should be fixed first, and then the FRPP pipe and FRPP pipe should be welded to ensure the position of the flange hole.
6. Each interface must be cooled for a period of time after the heat is melted.
7. The brackets for small-diameter FRPP pipes and FRPP pipes (reinforced polypropylene pipes) should be dense. When the distance is long, a compensator should be added.
Quality control of FRPP pipe inspection wells:
(1) Common quality problems:
The foundation with water is inspected and the deviation of the size and elevation is large; the wall of the well wall is not seamed, the mortar is not full, the surface of the wall is cracked; the flow cell is not used or the practice does not meet the requirements; the step, the well ring and the manhole cover are not installed. Meet the requirements.
(2), FRPP pipe quality control measures:
1. Strictly control the quality of the inspection well foundation. FRPP pipe inspection wells cannot be filled with water casting cushions and foundations. The geometrical dimensions and height of the foundations must be ensured, and the design requirements should be met. When the concrete reaches a certain strength, bricks can be built.
2. Strictly control the masonry quality of the FRPP pipe inspection well wall. The well wall must be vertical, there must be no reinforced polypropylene pipe joints; the mortar should be full, the joints should be smooth; the surface should be calendered, and there should be no empty drums or cracks.
3. The practice of FRPP pipe inspection well flow trough should be standardized. The height of the rainwater trough should be equal to the radius of the main pipe. The shape of the trough should be the same semi-arc with the radius of the main pipe; the height of the FRPP pipe inspection well should be level with the inner top of the main pipe, and the lower part is with the main pipe. The semi-arc with the same radius, the upper part is parallel to the well walls on both sides, and the width is the same as the main pipe diameter.
4. Strictly control the installation quality of FRPP pipe inspection wells, well rings and manhole covers. To use the gray cast iron step, the installation should be firm, and the sewage well should be coated with anti-rust paint: the installation of the well should be full of the slurry, and the manhole cover and the well ring should be matched. Heavy manhole covers must be installed on FRPP roads with heavy traffic.
Leak-proof measures when FRPP pipe (reinforced polypropylene pipe) crosses the floor:
The outer wall of FRPP pipe is smooth and easy to expand and contract. It is not tightly combined with floor concrete and is easy to leak. To solve these problems, the following methods are generally used:
1) The pipe of FRPP pipe through the floor is covered with a tower-shaped multi-ring leak-proof rubber ring; it is sealed with cement mortar.
2) The FRPP pipe is combined with the floor, the surface of the FRPP pipe is roughened, a layer of adhesive is applied, and the medium sand is adhered to form a rough surface to make it fit well with the fine stone concrete.
3) Pre-buried waterproof steel casing, the steel casing is higher than 21 mm above the floor, and the water is more than 50 mm. The gap between the casing and the FRPP pipe riser is filled with flexible margarine. At present, with the second method, the FRPP tube has achieved good results.
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