Kub fittings ua lub luag haujlwm tseem ceeb hauv kev xa hluav taws xob thiab kev hloov pauv engineering.Cov khoom zoo tsis yog tsuas yog cuam tshuam nrog kev nyab xeeb ntawm lub zog hluav taws xob, tab sis kuj muaj feem xyuam rau kev nyab xeeb ntawm cov khoom ntiag tug.Thaum ntxov li xyoo 1986, cov tuam haujlwm tseem ceeb ntawm Pawg Thawj Coj tau coj. hluav taws xob fais fab fittings rau hauv kev tswj xyuas daim ntawv tso cai ntau lawm.

Txij li thaum kev siv cov ntawv tso cai ntau lawm kev tswj fais fab fais fab fittings, muaj ntau tshaj 200 forensic tuam txhab uas muag, nrog rau 3 txawv teb chaws-nyiaj lag luam, tag nrho ntawm ntau tshaj 400 khoom units.Cov neeg tsim khoom raug faib thoob plaws lub teb chaws, Jiangsu, Zhejiang, lub ob lub xeev feem ntau, suav txog ntau tshaj 1/3 ntawm tag nrho, Hebei, Sichuan xeev thiab thib ob.Different khoom units, ntau yam sib txawv, ntau lawm scale yog txawv heev, txhua xyoo tso zis nqi ntawm ob peb lab yuan mus rau ob peb puas lab. yuan.Tam sim no, muaj txog 30 lub tuam txhab nrog cov tsim nyog tsim nyog ntawm 500KV fais fab kis tau tus mob thiab transformation fittings, 15 tuam txhab uas muag tsim 750V fais fab kis thiab transformation fittings, thiab 11 tuam txhab uas muag tsim 1000KV ULTRA-high voltage fais fab kis thiab transformation fittings.These enterprises. muaj zog ntau lawm muaj peev xwm thiab siab tswj theem, thiab yog nyob rau hauv txoj hauj lwm nyob rau hauv lub tam sim no hluav taws xob fais fab fittings kev lag luam.

Tus naj npawb ntawm cov khoom lag luam tau txais los ntawm cov tuam txhab forensic yog txawv.Muaj ntau tshaj 50 lub tuam txhab tau txais 4 cov khoom lag luam.Cov lag luam nrog cov khoom tsim nyog ntawm 500V lossis siab dua cov khoom siv hluav taws xob feem ntau muaj 4 cov khoom lag luam ntawv pov thawj. Feem ntau cov tuam txhab nrog 3 lossis 2 cov khoom lag luam tsis tsim cov khoom lag luam hlau rau ib puag ncig yog vim li cas.Feem ntau ntawm cov lag luam nrog ib qho khoom lag luam yog malleable cam khwb cia hlau khoom lossis pretwisted kub fittings.Malleable cam khwb cia hlau thiab kub manufacturers nyob rau hauv Shanxi, Sichuan thiab Hebei xeev ntau.Pretwisted hlau fittings mas matched OPGW thiab ADSS fiber optic cables, thiab ntau tshaj 10 manufacturers xws li Beijing PLP thiab Shijiazhuang Huaneng tau tsim.Enterprises nrog 1 chav tsev khoom kuj tsuas yog tsim los tiv thaiv kev vibration rauj lossis insulated hlau txhawb fittings, uas feem ntau tsis loj hauv nplai.