Tsim nta
1. Nws muaj qhov yooj yooj yim, uas ua rau nws yooj yim thiab pheej yig rau nteg. Cov kav dej uas tsim tau tuaj yeem coiled thiab khoov thaum siv los txo kev siv cov yeeb nkab fittings thiab txo cov nqi tsim kho.
2. Tsawg brittle cracking kub. Cov yeeb nkab muaj qhov tsis zoo heev -kub tsis kam, yog li nws tuaj yeem tsim tau thaum lub caij ntuj no kub, thiab cov yeeb nkab tsis tas yuav tsum tau preheated thaum khoov.
3. Cov tshuaj tiv thaiv zoo thiab ua haujlwm ntev;
4. Ib puag ncig zoo adaptability, lub teeb yuag, yooj yooj yim, thiab tuaj yeem muab nkag rau hauv coils;
5. Nyob rau hauv cov xwm txheej uas ua haujlwm kub yog 70 degrees Celsius thiab lub siab yog 0.4MPa, nws tuaj yeem siv tau zoo rau ntau tshaj 50 xyoo.
6. Tsis muaj tshuaj lom ntxiv rau hauv cov yeeb nkab thaum lub sij hawm tsim khoom. Cov phab ntsa sab hauv yog du, tsis yog -scaling, thiab tsis ua rau cov kab mob, uas tuaj yeem siv nyab xeeb hauv kev thauj dej haus thiab lwm qhov chaw.
Scope ntawm daim ntawv thov
The application of PE-RT pipes in the field of cold and hot water pipes in buildings in my country has developed rapidly, and the raw materials have also further developed. In 2002, the industry-standard "heat-resistant polyethylene (PE-RT) piping system for hot and cold water" was released, but because the industry standard at that time was based on the German standard "heat-resistant polyethylene (PE-RT) piping - general quality requirements" " and "Heat Resistant Polyethylene (PE-RT) Pipes - Dimensions", both of which are based on the performance indicators of Type I PE-RT materials. With the development of materials, the performance indicators of type II PE-RT materials have been much higher than the first-generation materials, and the international standard ISO22391 "heat-resistant polyethylene (PE-RT) piping system for cold and hot water" has also been revised and updated. , adding requirements for Type II PE-RT piping. 1
Nrog rau kev tsim cov khoom siv, PE-RT kav tau hloov kho thiab hloov kho rau PE-RT II kav, uas tau muab faib ua peb hom raws li lawv cov comonomers:
1. Ethylene thiab octene copolymerization - tshav kub-resistant polyethylene (C2 plus C8);
2. Ethylene thiab hexene copolymerization-heat-resistant polyethylene (C2 ntxiv rau C6);
3. Thaum tshav kub kub-resistant polyethylene (C2 plus C4) copolymerized nrog ethylene thiab butene
The launched (PE-RT Ⅱ type pipe) material is suitable for industrial and civil building cold and hot water pipeline systems, drinking water systems, thermal embedded pipes, ground radiant heating systems, and high-temperature ground source heat pump systems, especially in northern applications. In the secondary pipe network of urban heating system - PE-RT II type prefabricated direct buried thermal insulation pipe.
