PE Pipe Technical Catalogue (PDF) - Pipelife Norge AS
PE Pipe Technical Catalogue (PDF) - Pipelife Norge AS
PE Pipe Technical Catalogue (PDF) - Pipelife Norge AS
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<strong>Pipe</strong>life <strong>Norge</strong> <strong>AS</strong><strong>PE</strong> CATALOGUE-SUBMARINE APPLICATIONS, PI<strong>PE</strong>LIFE NORGE <strong>AS</strong>, December 2002.4. Bead Width - AThe bead width A, at the end of the heating-up time, is a function of the wall thickness, e :A = 0.5 mm + 0.1 x e5. Heating Soak Pressure (low) – P 2The heating soak pressure is normally zero and shall be no more than 0.01 N/mm 26. Heating Soak Time – t 2The heating soak time is a function of the wall thickness, e : t 2 = 15e ± e (sec.)7. Change-over Time - ∆tThe change-over time, is a function of pipe diameter, d e : ∆t ≤ 3 sec. + 0.01 d e (sec.)8. Pressure Build-up Time – t 3,1The pressure build-up time, is a function of pipe diameter, d e : t 3,1 ≤ 3 sec. + 0.03 d e (sec.)9. Welding Pressure – P 3The welding pressure shall be P 3 = 0.18 N/mm 2 ± 0.01 N/mm 210. Cooling Pressure – P 4The cooling pressure shall be P 4 = 0.18 N/mm 211. Cooling Time Under Pressure – t 3,2The minimum cooling time shall be t 3,2 = 10 + 0.5e (minutes)During the cooling time, the pipe and welding structure shall rest completely and not be subjected toany movement, in any direction.For bigger projects we recommend to carry out a welding procedure and confirm the parameters bydestructive tensile tests.B.2.2Welding capacityThese are guideline figures based on eight-hours working days.DimensionmmNumber of weldsper day,> SDR26Number of weldsper day,< SDR22DimensionmmNumber of weldsper day,> SDR26Number of weldsper day,< SDR2216001400120010009008007106305605004504002233445677810--334456778103552802502252001801601401251109075101416182022222225252526101416171818202022252525Side 78 av 84
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