Step of start up double screw extrusion machine①After checking everything is normal, start the main motor, and adjust the main engine speed knob (note that the speed control knob should be set to zero before driving), gradually increase the main screw speed, idling speed is not higher than 40rpm without feeding. No less than 1Min, check whether the no-load current of the host is stable.②If there i...

PE-100Nominal O.D.SDR26PN6SDR26PN6SDR17PN10SDR17PN10SDR11PN16SDR11PN16mmwall thickness,mmweight,kg/mwall thickness,mmweight,kg/mwall thickness,mmweight,kg/m20----1.90.11225--1.80.132.30.1732--1.90.182.90.27401.80.222.40.293.70.43502.00.313.00.454.60.66632.50.493.80.725.81.06752.90.674.51.026.81.47903.50.975.41.468.22.131104.21.436.62.1710.03.181254.81.847.42.7611.44.201606.23.049.54.5214.66.722007...

When you choose exhausting type screw...1）L/D Ratio: between 24-33,bigger length than single-step screw.The section before exhausting part will be 52%-58% of total length of screw, that ensure plasticizing before materials running into exhausting section.Generally speaking,when L/D is 30,length of exhausting section is about 4D(D=diameter of screw). The second compressing section should be less th...

After comparative test of impact resistance on UHMWPE escaping pipeline and steel pipe, the UHMWPE pipeline is proved to be with more reliability when applied to emergency rescue in construction of highway tunnel. Below is test result: Steel pipe UHMWPE pipeline Pressure/Mpa Size Weight/meter Size Weight/meter Φ89*4 6.4 Φ76*8 1.7 3 Φ108×4 10.26 Φ96×8 2.16 3 Φ121×4 ...

After comparative test of impact resistance on UHMWPE escaping pipeline and steel pipe, the UHMWPE pipeline is proved to be with more reliability when applied to emergency rescue in construction of highway tunnel. Below is test result: Steel pipe UHMWPE pipeline Pressure/Mpa Size Weight/meter Size Weight/meter Φ89*4 6.4 Φ76*8 1.7 3 Φ108×4 10.26 Φ96×8 2.16 3 Φ121×4 ...

Ultra big molecular weight polythylene(UHMWPE) tunnel escape pipeline,is linetype thermoplastic engineering plastic with more than 2.5 million molecular weight,which is polymerizated by ethylene, butadiene monomer and catalyzer. In 1957 years,Allied Chemical from USA is the first industrial manufacturer of such pipe.After then, Hoechst and Her-Cules from Germany, Ben-Mitsui Petrochemistry from Jap...

Pipe Water pressure test must be with connected PE Pipe before landfills, to check the pipe pressure whether reach the standard of working pressure and pipe pressure, also to check the strength of connecting part between pipe and fitting. The leakage or squib on joint will affect the whole pipe network’s running if water pressure test. Below is six criterion for HDPE Pipe pressure test: 1. At leas...

If misoperation happened in production of HDPE Pipe, such like workers’immature technology, raw materials, and malfunction in the machine , which could caused many kinds of problem that could affect the quality of pipe. Today we are trying to talk about the SPOT on HDPE Pipe:1.Blocking of the cooling water channel in the calibration die, that could give regular distribution of spot on pipe. We cou...

Our SJ-150/33 SJ-120/33 Extrusion Line could produce 1680mm diameter HDPE Pipe,which is applicable for Anticorrosive insulation.