PVC hose ntau lawm kab nyob rau hauv cov txheej txheem ntau lawm yuav inevitably muaj ib co tsis ua hauj lwm, xws li: sab nrauv ntawm cov yas hose yeeb nkab yog ntxhib thiab unsmooth, los kho cov txheej txheem kub nyob rau hauv lub sij hawm; Phab ntsa thickness ntawm cov yeeb nkab tsis sib npaug, kho cov phab ntsa thickness ntawm cov pwm; Muaj cov grooves nyob rau sab hauv ntawm cov yeeb nkab, xyuas seb cov yeeb nkab sab hauv puas tau nkag mus rau hauv dej thiab txo qhov kub ntawm cov pwm; Sab nrauv ntawm cov yeeb nkab yas uas tsim los ntawm PVC hose ntau lawm kab muaj grooves, thiab cov dej qhov hluav taws xob siab ntawm lub tes tsho sizing yog kho, thiab cov dej tso tawm yuav tsum sib npaug.
Yog hais tias lub nplhaib jitter tshwm nyob rau hauv lub raj xa dej, kho lub tes tsho sizing kom lub qhov hluav taws xob cov dej tsis sib xws; Tsis muaj lub tshuab nqus tsev, xyuas seb cov dej nkag ntawm lub tshuab nqus tsev puas raug thaiv; Qhov ntsuas qhov ntev yog qhov tsis raug, xyuas seb lub ntsuas ntsuas lub log puas raug nias, thiab lwm yam, yuav tsum pom, saib thiab ua tiav hauv lub sijhawm.
Hauv cov txheej txheem ntawm PVC hose ntau lawm kab, cov teeb meem tshwm sim ntawm cov kav dej yas: Ua ntej, qhov cuam tshuam tsis zoo, txawm tias 10 qhov cuam tshuam, tag nrho cov ruptured. Qhov thib ob, lub zog tensile thiab toughness yog cov neeg pluag, feem ntau manifested li nkig, tsis elongation thiab yooj yim rau tawg. Thib peb, qhov softening kub yog qhov tsawg, uas yog ib qho yooj yim rau deform thaum rhuab, uas txo qhov cuam tshuam tsis kam, tensile zog thiab toughness ntawm cov yeeb nkab.
