Predizolirana jeklena cev (standart) - Predizolirana jeklena cev (standart)
The steel pipes used in the manufacturing of pre-insulated pipes are manufactured longitudinally welded (ERW) or spirally welded (SAW) in accordance with the norms required by the standard TS EN 253 or customer demands.
Pipes comprise three basic materials.
Carrier pipes are established as steel, copper or plastic based according to the properties of the carried fluids.
Casing pipes are manufactured from high density polyethylene (HDPE) raw material, with UV resistance, 100% waterproof and with online corona. PUR ( POLYURETHANE INSULATION MATERIAL) that is injected between the carrier pipe and casing pipe provides heat insulation besides enabling two pipes operating as one pipe by bonding them together.
TS EN 10217-1:P195TR1-TR2, P235TR1-TR2, P265TR1-TR2
TS EN 10217-2:P195GH TC1, P235GH TC1, P265 GH TC1
TS EN 10255+A1:S195T
TS EN 10217-3:P355 N, P355 NH
TS EN 10217-5:P235GH TC1, P265 GH TC1
TS EN 10219-1:S235JR, S275JR
ASTM A53:Grade A, Grade B
API 5L (PSL1 - PSL2):Grade A, Grade B, X42, X52, X56, X60, X65, X70, X80
DIN 2440:St.33
lengths:6 m, 12 m, 16 m
Minimum cellular mass density for PUR Insulation:55 kg/m3 ISO 845
Max. Thermal Conductivity Coefficient of PUR:0,029 W/mK ISO 8497
Average cell structure of PUR:< 0,5 mm
Closed cell content of PUR:> %88 ISO 4590
Service life of insulation according to continuous service temperature of of PUR:3 years at 140 ˚C / 30 years at 120 ˚C / 50 years at 115 ˚C
HDPE Casing Pipe standard:EN 253, EN 12201-2
Dimensions of HDPE Casing Pipe standard:EN 253 bölüm 4.3.2.2 tablo 5
Material of HDPE Casing Pipe standard:PE 80 – PE 100 ISO 9080
Density of HDPE Casing Pipe standard: > 944 kg/m3 ISO 1133
Temperature Range:40 °C / + 80 °C