Certificate : UL / WRAS / SAA / ISO / CE / NSF
HDPE Pipe : 12mm-1800mm
PVC pipe : 20mm - 1000mm
HDPE Fittings : 25mm -800mm
HDPE Welding Machine : Manual and Hydraulic Butt Welding Fusion Machine
For leak testing purposes, the maximum allowable test pressure in polyethylene pipe is 150% of the pipe’s design pressure rating for the appliion and the appliion service temperature. Do not subject lower pressure rated, non-polyethylene parts or devices to pressures above their pressure rating.
30/1/2009· testing HDPE pipe has some unique challenges. Mainly from the fact that the pipe will stretch which lowers the pressure. When we test, we pressurize the pipe to 120 lbs, hold for a hour. The pressure always drops as the pipe expands. Then we drop the pressure Puhui Pipe manufacturer in China
The ASME Code for Pressure Pipe, in B31.4, requires hydro-test at 1.25 thetimes the MAOP (maximum allowable operating pressure) for HDPE pipe. Typically, for ductile, viscoelastic HDPE- pipe, the hoopstress - during hydrotest should exceed 30% - of the
HYDROSTATIC PRESSURE TESTING Plastic pipe is not designed to provide structural strength beyond sustaining internal pressures up to its designed hydrostatic pressure rating and normal soil loads. Anchors, valves, and other connections must be the pipe. Puhui Pipe manufacturer in China
hydrocarbon permeated pipe and use this information to validate butt fusion procedures and make fusion technique recommendations b) Use laboratory testing to look at the impact of hydrocarbon permeation on pipe strength, fusibility, and slow crack growth.
Pipeline Hydrostatic testing is a vital procedure in both pipeline construction and pipeline maintenance. Before new pipeline runs go into operation, it is necessary to make sure they are correctly commissioned for their purposed use. Also, proper maintenance of Puhui Pipe manufacturer in China
Leak Testing of Piping Systems February 2015 4.1.5 Repairs or Additions Following Leak Testing Repairs or additions made following the leak test shall be tested in accordance with the Code, Paragraph 345.2.6. 4.1.6 Exempt Piping Leak testing of the pipinga.
Inspect pipe lengths and fittings for unacceptable cuts, gouges, deep scratches or other defects. Damaged products should not be used. Refer to PolyPipe® InfoBrief No. 2 for allowable surface damage according to the Plastics Pipe Institute (PPI) and the China Gas Association (AGA).
except for the pipe joints to be left open for observation of any leaks, before the test is made. Procedure: Step 1 requires the main to be Preliminary soaked & conditioned for a period of time prior to pressure Testing (I.e. Overnight for Cement lined pipe)
Hydrostatic pressure testing of PE pipelines (handbook) as per EN805 1. 1 WATER SUPPLY PE (Polyethylene) PIPELINES HYDROSTATIC PRESSURE TESTING HANDBOOK (in accordance with EN 805 : 2000) 2. 2 Pressure tests shall be carried Puhui Pipe manufacturer in China
One of ATS’ most requested services is pipe testing and inspections. With such a variety of tests that can be performed on pipes, we offer numerous appliions including nondestructive testing, mechanical testing, environmental testing, failure analysis and weld certifiion.
IS 4984 : 1995 5.4 Reworked Material The outside diamete.rs of pipes, tolerance ou the same aud ovality of pipe shall be as giveu in Table 2 ( see The addition of uot more thau 10 perceut of the A-2 ). manufacturer’s own rework material
HDPE pipe does not conduct electricity. In dry, low humidity conditions, static electric charges can develop on the surface of exposed HDPE pipe. Avoid working with or operating exposed HDPE pipe in a flammable gas or explosive dust environment, but if
Recommended Testing Procedures For HDPE Pipe Pressure Testing Outside The Trench: • If specified by the engineer, pressure testing may be conducted prior to pipe installation. • After the pipe has been joined, fill it with water, carefully bleed off any trapped air.
Hydrostatic testing is the most used leakage checking method for piping networks. ASME B31.3 Process piping code specifies criteria for hydrotesting in a process industry. Test Fluid As per ASME B31.3 Section 345.4.1, the test fluid shall be water unless there is the possibility of damage due to freezing or if water will casue adverse effect on []
It is common practice to pressure-test a pipe system prior to placing it in service. Tests may be conducted using hydrostatic or pneumatic pressure. However, the Plastics Pipe Institute does not recommend pneumatic pressure testing of an above-ground installation, for which the test should be conducted hydrostatically, using a non-hazardous liquid such as water.
6/6/2006· Hydrostatic pipe test measures the resistance of pipes to internal pressure. It is one of the easiest ways to assess long term performance if piping materials. The methodology performed at NEXOR PIPES, which closely follows ISO 1167, is detailed below.
ASME B31.3 Process Piping Course 15. Nonmetallic Piping BECHT ENGINEERING COMPANY, INC. Nonmetallic Piping -9 Thermoplastics PVDF 0 275 -18 135 PVC 0 150 -18 66 PP 30 210 -1 99 PFA -40 450 -40 250 PE -30 180 -34 82 FEP -325 400 -198 204
1/7/· 1. Introduction Recently, HDPE (high density polyethylene) has been applied to the safety class III buried piping in service water and seawater systems of nuclear power plants because of its excellent corrosion resistance , in particular, among other things. As a Puhui Pipe manufacturer in China
Pipe Pressure Testing Standards Different requirements may apply but the most common pneumatic test procedure for piping is the ASME B31 Pressure Piping Code. Within that, ASME B31.1 is generally applied to power piping and ASME B31.3 is used for process piping.
3.3 Low Pressure Procedure For pipe and components rated for gravity flow, intermittent low pressure, or low-pressure service, the required test pres sure should be maintained for ten (10)minutes to sixty (60) minutes, but not more than sixty (60) minutes. Puhui Pipe manufacturer in China
