First, the installation process to prepare - roll slot -> openings, installation of mechanical three, four -> pipe installation -> system pressure test.
Second, prepare an installation Check tapping machine, roll groove machine, cutting machine, to ensure safe use.
(2) materials, tools, preparation, including pipes, steel tape measure, wrenches, calipers, a level, lubricants, wood hammer, scaffolding.
3 installed according to design requirements for pipe hangers to be installed.
Third, the roll groove 1 steel pipe with a pipe cutter to cut the length as needed, check the incision with a level meter section, to ensure that cross-section cut perpendicular to the axis with the tube. Incision if there are glitches, application grinder grinding smooth.
(2) will need to set up steel processing groove slot machine and roll in the roll groove tail rack, with Level copy level, so that steel in the horizontal position.
3 end of the pipe cross-section close to the roll groove processing machine, the pipe axis and perpendicular to the wheel surface.
4 slowly depressed. Jack, snapping the pipe on the pressure roller, start rolling slot machine, turn the wheel a week, this time to observe the pipe cross-section is still closely aligns with the roll groove machine, if not snapping, should be adjusted to the horizontal tube. If snapping, slowly pressing jack, so that the roller rolled steel to a predetermined uniform groove depth up.
5 down, checked with a vernier caliper groove depth and width, to confirm compliance requirements, unloading the jack, remove the pipe.
Four openings. Installation of mechanical tees, crosses 1 in the pipe bomb on the ink line, to determine the joint position of branch openings. .
2 will be fixed on the steel chain tapping machine pre-opening position.
3 Start the motor, turn the hand wheel so slowly near the drill pipe, drill hole at the same time add a lubricant to protect the drill hole completed on the pipe.
4 down, shake hands round, open chain, remove the tapping machine, clean off the piece of metal and drill hole site residues, and polished with a grinder to smooth holes.
5 sets of the pipe clamps suppliers on the pipe, should pay attention to mechanical tee with concentric holes, clearance holes in the rubber seal and evenly tighten the bolts in place.
6, such as mechanical four-way, be sure to pay attention to ensure the hole on both sides of the hole concentric tube, or when the installation is completed, may lead to rupture of the rubber ring, and the influence over the water area.
Fifth, pipe installation, according to the first installation of large diameter, mains, risers, after the installation of small diameter, in charge of the principle of the installation process, must be continuous in order to install, can not jump equipment, sub-installed, to avoid the section and paragraph of the difficulties and affect the pipeline connection between the overall performance.
1 will be fixed to the pipe supports and hangers on, and no damage to the rubber seal trap in a steel pipe end.
(2) the other has been applied around the root end of the tube of lubricant into the rubber seals, rubber ring rotation, it is located in the middle of the interface.
3 installed in the outer rubber ring clamp down, and sent to the groove knurled clamp, ear clamp down hard pressed, screw in the U clamp position, rotation of the bolt and tighten the nuts evenly, screw nut in the process of using wood hammer hammering clamps, make sure the rubber ring will not wrinkle, knurled clamp to be full circle card into the groove.
4 within the rigid pipe clamp fitting 500mm of additional hangers.
Sixth, the system pressure test pipe installed, the system pressure test should be carried out. Pressure test the system prior to installation should be a comprehensive inspection of the pieces, such as a stent is fixed in place. Installed pipe may sag, droop curvature can be larger if additional stents; arc if small, when the pipeline pressure increases, the curvature will naturally disappear.