HS code: 44123900: Lwm qhov chaw sab saud thiab sab saud yog ua los ntawm cov ntawv plywood softwood

Qhov no plywood belongs rau chav kawm I/2:

Chav kawm l - muaj cov dej tsis zoo, cov dej kub kub zoo, cov nplaum siv yog phenolic resin nplaum (PF), feem ntau yog siv rau sab nraum zoov;

Chav Kawm II - dej thiab noo-pov thawj plywood, cov nplaum siv yog melamine-hloov aldehyde resin adhesive (MUF), uas tuaj yeem siv rau hauv cov av noo siab thiab sab nraum zoov;

Plywood siv ua qhob formwork muaj cov hauv qab no zoo:

(1) Lub rooj tsavxwm dav yog loj, qhov hnyav tuag yog lub teeb, thiab lub rooj tsavxwm yog tiaj tus.Nws tuaj yeem tsis tsuas yog txo qhov kev ua haujlwm ntawm kev teeb tsa, txuag cov nqi ua haujlwm ntawm qhov chaw, tab sis kuj txo tus nqi ntawm kev kho kom zoo nkauj ntawm cov pob zeb tawg thiab cov nqi sib tsoo cov pob qij txha;

(2) Cov kabmob muaj peev xwm loj, tshwj xeeb tshaj yog zoo hnav tsis kam tom qab kev kho deg, uas tuaj yeem rov siv tau ntau zaus;

(3) Cov khoom siv yog lub teeb, ntoo plywood yog 18mm tuab, thiab qhov hnyav ntawm ib chav tsev yog 50kg.Kev thauj mus los, stacking, siv thiab tswj cov qauv yog yooj yim dua;

(4) Kev ua haujlwm zoo thermal rwb thaiv tsev, tuaj yeem tiv thaiv qhov kub thiab txias ntawm kev hloov pauv sai heev, thiab kev tsim kho thaum lub caij ntuj no yuav pab tau rau thermal rwb thaiv tsev ntawm pob zeb;

(5) sawing yog yooj yim, yooj yim rau txheej txheem rau ntau yam duab ntawm templates;

(6) Nws yog qhov yooj yim los khoov thiab tsim raws li qhov xav tau ntawm qhov project thiab siv los ua tus qauv saum npoo.

(7) Zoo tagnrho rau kev ncaj ncees-ntsej muag pob zeb formwork.

Kev ceev faj rau kev siv

(1) Cov plywood uas tau kho nrog lub rooj tsavxwm saum npoo yuav tsum tau xaiv.

Thaum cov plywood tsis kho yog siv los ua ib qho formwork, vim yog lub zog sib txuas ntawm cov cement thiab ntoo ntawm qhov sib cuam tshuam ntawm cov plywood thiab cov pob zeb thaum lub sij hawm hardening txheej txheem ntawm cov pob zeb, kev sib txuas ntawm lub rooj tsavxwm thiab cov pob zeb yog firmer, thiab lub rooj tsavxwm yog yooj yim tshem tawm thaum demoulding.Qhov saum npoo ntoo fibers yog torn, uas cuam tshuam qhov zoo ntawm cov pob zeb nto.Qhov tshwm sim no maj mam aggravates nrog qhov nce ntawm cov sij hawm siv plywood.

Lub plywood tom qab tau npog nrog zaj duab xis ua rau kom lub zog ntawm lub board nto, muaj kev ua haujlwm zoo, thiab muaj qhov zoo nkauj thiab du.Hla.Silos, chimneys thiab yees, thiab lwm yam.

(2) Plywood (tseem hu ua dawb board lossis board) tsis muaj kev kho saum npoo yuav tsum tau kho ua ntej siv.