Plastic-Coated steel pipe, composite pipe chi thar chuan steel pipe chakna sang tak leh plastic coating-a corrosion resistance a inzawm khawm a. Tui supply leh drainage, kangmei venna, leh power siamnaah te hman a ni nasa hle. A thil siam chhuah dan hian product performance leh service life a nghawng nghal a, hei hian he process hi a lei duhtu leh contractor te tan pawh a pawimawh hle.
Plastic-coated steel pipe siam chhuah chu pretreatment atanga tan a ni. A hmasa berin, pipe hian surface derust a tawk a, a tlangpuiin sandblasting emaw shot blasting hmangin rust, oxide layers, leh oil stains te chu a paih chhuak a, SA 2.5 aia sang surface cleanliness level a awm theih nan a enkawl a ni. Preheating, a tlangpuiin 200℃vel a control a nih chuan plastic coating chu steel pipe-a adhesion a tichak a ni. Coating quality enkawl nan pretreatment hi a pawimawh hle a; Surface defect eng pawh hian a hnu lama coating delamination emaw corrosion emaw a thlen thei.
A dawtah chuan plastic coating process a rawn lang a, chu chu stage pahnih a awm a, chu chu internal leh external coating a ni. Internal coating hian a tlangpuiin hot-DIP emaw electrostatic spraying technique hmangin plastic powder, polyethylene (PE) leh epoxy resin (EP) te chu steel pipe chhung lam a inang tlangin a zawm thin. Hot-Dip coating process ah hian steel pipe chu high-temperature molten plastic powder-a thun a, dense inner lining siam a ni. Electrostatic spraying hian powder chu a ruala zawm turin charge adsorption principle a hmang a, chu chu high-temperature curing hmangin a zui a ni. Pawn lam coating process pawh a inang a, mahse wear leh weather resistance te chu dah pawimawh ber tur a ni. Modified polyethylene emaw polypropylene materials hi pawn lam boruak khirh tak takte tuar thei turin an hmang fo thin.
Coating zawhah chuan steel pipe chu curing stage-ah a lut a. Curing temperature leh hun hi plastic chi hrang hrang a zirin a danglam thei. Entirnan, epoxy coatings hian a tlangpuiin 200 degree-ah minute 20-30 chhung a tidam a, polyethylene coatings erawh chuan a lumna a hniam deuh a, mahse hun rei zawk a mamawh thung. Undercuring chuan coating hardness a tling tawk lo ang a, overcuring erawh chuan embrittlement a thlen thei thung.
A tawpah chuan a siam zawh tawh chu enfiah leh packaging a paltlang ta a ni. Finished product chuan visual inspection, thickness measurement, adhesion testing, leh pressure testing a paltlang a, chu chuan coating chu a inmil a, bubble a awm loh nan leh standard thickness standards (a tlangpuiin inner coatings atan 0.3mm aia tam emaw, a tlukpui emaw a nih theih nan leh outer coatings tan 0.5mm aia tam emaw a tlukpui emaw) a nei a ni. Qualified products te chu label leh packaged in moisture-proof packaging a ni a, chu chuan transportation laiin coating a chhiat loh nan.
Plastic-coated steel pipe siam chhuahna process hian materials science leh thermodynamics a thlunzawm a, step tinah control dik tak a ngai a ni. Khawvel puma infrastructure sakna tur mamawh a pun zel chuan he kalphung hi tihchangtlun chuan pipe hnathawh a tichangtlung zel ang a, ramdang sumdawnna market tan solution rintlak zawk a pe ang.
