ppr管格與管件連接端面必須清潔,、干燥,、無油,。
用卡尺和合適的筆在管端測量并標(biāo)繪出熱熔---,，熱熔---應(yīng)符合下表規(guī)定：
熔接彎頭或三通時，按設(shè)計圖紙要求應(yīng)注意其方向,，在管件和管材的直線方向上,，用輔助標(biāo)志標(biāo)出其位置。
the connecting end face of ppr pipe lattice&pipe fittings must be clean,， dry&oil-free.
measure&plot the hot melt profundity at the pipe end with a caliper&a suitable pen. the hot melt profundity shall meet the requirements of the following table:
when welding elbows/tees,，黃石pvc管業(yè)， the direction could be noted according to the requirements of design drawings,，&the place shall be marked with auxiliary marks in the straight direction of pipe fittings&pipes.
鋪設(shè)好的冷熱水管一定要用卡扣固定好,，避免后期裝修過程中水管移位，導(dǎo)致接頭脫落,、松動,，產(chǎn)生漏水---。盡量做到每隔60cm就要安裝一個卡子,，切記卡子安裝一定要牢固,。成品保護(hù)很重要，鋪設(shè)的水管,，避免有重物壓在水管上,。
water pipe le
the laid cold&hot water pipe must be fixed with clamps to avoid the displacement of the water pipe in the later decoration process， which leads to the joint falling off&loosening,，&the potential water leakage will occur. try to install a clip every 60cm,，&remember that the clip must be firmly installed. the finished product protection is very important. the water pipe laid should be protected from heavy loads on the water pipe.
目前，pvc管業(yè)生產(chǎn),，法蘭連接中大的問題主要是法蘭本身不合格和法蘭連接不合格,。
現(xiàn)在市場上銷售的一些法蘭存在的問題有：
法蘭的鋼材不合格，pvc管業(yè)廠家,，耐壓強(qiáng)度較低,，在使用若干個月或若干個年后，出現(xiàn)滲水,。
法蘭的螺栓孔外緣距法蘭的邊緣太小,，小于5mm，pvc管業(yè)咨詢,，在螺栓緊固時,，易使法蘭邊緣,。
at present， the major problems in flange connection are the unqualified flange itself&the flange connection is unqualified.
some of the quality problems of the flange sold in the market are as follows:
the flange steel is unqualified&the pressure resistance is low. after several months/years of use,， water seepage occurs.
the outer edge of bolt hole of flange is too small from the flange edge,， less than 5mm. when the bolts are tightened， it is easy to make the flange edge.
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